./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_4-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff 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_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_4-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0724aefed4fd629206cc51e19e964e04af92729823366947a0cfe01fe4e4d102 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 08:00:02,886 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 08:00:03,010 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 08:00:03,018 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 08:00:03,019 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 08:00:03,055 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 08:00:03,056 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 08:00:03,057 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 08:00:03,058 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 08:00:03,063 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 08:00:03,065 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 08:00:03,066 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 08:00:03,066 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 08:00:03,068 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 08:00:03,068 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 08:00:03,069 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 08:00:03,069 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 08:00:03,070 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 08:00:03,070 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 08:00:03,071 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 08:00:03,071 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 08:00:03,072 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 08:00:03,072 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 08:00:03,073 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 08:00:03,073 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 08:00:03,074 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 08:00:03,074 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 08:00:03,075 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 08:00:03,075 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 08:00:03,076 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 08:00:03,077 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:00:03,078 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 08:00:03,078 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 08:00:03,078 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 08:00:03,078 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 08:00:03,079 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 08:00:03,079 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 08:00:03,079 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 08:00:03,079 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 08:00:03,080 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 08:00:03,080 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 08:00:03,080 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0724aefed4fd629206cc51e19e964e04af92729823366947a0cfe01fe4e4d102 [2023-11-19 08:00:03,383 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 08:00:03,411 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 08:00:03,414 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 08:00:03,416 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 08:00:03,416 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 08:00:03,418 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/recursive-simple/fibo_2calls_4-1.c [2023-11-19 08:00:06,522 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 08:00:06,752 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 08:00:06,753 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/sv-benchmarks/c/recursive-simple/fibo_2calls_4-1.c [2023-11-19 08:00:06,761 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/data/c32cd029b/eadb572238284adeb2743510d278d960/FLAG610c1b18a [2023-11-19 08:00:06,776 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/data/c32cd029b/eadb572238284adeb2743510d278d960 [2023-11-19 08:00:06,779 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 08:00:06,781 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 08:00:06,782 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 08:00:06,783 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 08:00:06,793 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 08:00:06,794 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:00:06" (1/1) ... [2023-11-19 08:00:06,795 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ee4499f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:06, skipping insertion in model container [2023-11-19 08:00:06,795 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:00:06" (1/1) ... [2023-11-19 08:00:06,819 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 08:00:06,992 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:00:07,005 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 08:00:07,033 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 08:00:07,049 INFO L206 MainTranslator]: Completed translation [2023-11-19 08:00:07,050 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:07 WrapperNode [2023-11-19 08:00:07,050 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 08:00:07,052 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 08:00:07,052 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 08:00:07,053 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 08:00:07,061 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:07" (1/1) ... [2023-11-19 08:00:07,068 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:07" (1/1) ... [2023-11-19 08:00:07,085 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 21 [2023-11-19 08:00:07,086 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 08:00:07,087 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 08:00:07,088 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 08:00:07,088 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 08:00:07,098 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:07" (1/1) ... [2023-11-19 08:00:07,098 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:07" (1/1) ... [2023-11-19 08:00:07,108 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:07" (1/1) ... [2023-11-19 08:00:07,109 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:07" (1/1) ... [2023-11-19 08:00:07,112 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:07" (1/1) ... [2023-11-19 08:00:07,114 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:07" (1/1) ... [2023-11-19 08:00:07,115 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:07" (1/1) ... [2023-11-19 08:00:07,115 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:07" (1/1) ... [2023-11-19 08:00:07,119 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 08:00:07,120 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 08:00:07,121 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 08:00:07,121 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 08:00:07,122 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:07" (1/1) ... [2023-11-19 08:00:07,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 08:00:07,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:07,153 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 08:00:07,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 08:00:07,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 08:00:07,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 08:00:07,205 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2023-11-19 08:00:07,205 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2023-11-19 08:00:07,206 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2023-11-19 08:00:07,206 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2023-11-19 08:00:07,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 08:00:07,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 08:00:07,287 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 08:00:07,290 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 08:00:07,485 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 08:00:07,506 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 08:00:07,506 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 08:00:07,510 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:00:07 BoogieIcfgContainer [2023-11-19 08:00:07,511 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 08:00:07,513 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 08:00:07,514 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 08:00:07,519 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 08:00:07,520 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:00:06" (1/3) ... [2023-11-19 08:00:07,521 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10855904 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:00:07, skipping insertion in model container [2023-11-19 08:00:07,521 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:00:07" (2/3) ... [2023-11-19 08:00:07,522 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10855904 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:00:07, skipping insertion in model container [2023-11-19 08:00:07,522 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:00:07" (3/3) ... [2023-11-19 08:00:07,523 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_4-1.c [2023-11-19 08:00:07,551 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 08:00:07,551 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-19 08:00:07,613 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 08:00:07,620 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, 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;@68845334, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 08:00:07,621 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-11-19 08:00:07,625 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 33 states have (on average 1.5151515151515151) internal successors, (50), 45 states have internal predecessors, (50), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2023-11-19 08:00:07,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 08:00:07,634 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:07,634 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:07,635 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 08:00:07,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:07,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1867028009, now seen corresponding path program 1 times [2023-11-19 08:00:07,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:07,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237114334] [2023-11-19 08:00:07,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:07,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:07,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:07,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:07,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:07,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1237114334] [2023-11-19 08:00:07,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1237114334] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:07,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:07,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:00:07,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371720117] [2023-11-19 08:00:07,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:07,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:00:07,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:07,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:00:07,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:00:07,908 INFO L87 Difference]: Start difference. First operand has 53 states, 33 states have (on average 1.5151515151515151) internal successors, (50), 45 states have internal predecessors, (50), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:07,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:07,956 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2023-11-19 08:00:07,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:00:07,959 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-19 08:00:07,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:07,968 INFO L225 Difference]: With dead ends: 59 [2023-11-19 08:00:07,968 INFO L226 Difference]: Without dead ends: 45 [2023-11-19 08:00:07,972 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:00:07,976 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 14 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:07,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 92 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:00:07,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-11-19 08:00:08,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2023-11-19 08:00:08,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 36 states have internal predecessors, (40), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-19 08:00:08,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2023-11-19 08:00:08,021 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 7 [2023-11-19 08:00:08,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:08,022 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2023-11-19 08:00:08,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:08,023 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2023-11-19 08:00:08,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 08:00:08,024 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:08,024 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:08,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 08:00:08,025 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 08:00:08,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:08,026 INFO L85 PathProgramCache]: Analyzing trace with hash 2043293518, now seen corresponding path program 1 times [2023-11-19 08:00:08,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:08,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861516288] [2023-11-19 08:00:08,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:08,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:08,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:08,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:08,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:08,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861516288] [2023-11-19 08:00:08,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861516288] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:08,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:08,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:00:08,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031156318] [2023-11-19 08:00:08,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:08,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:00:08,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:08,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:00:08,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:00:08,118 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:08,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:08,224 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2023-11-19 08:00:08,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:00:08,225 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-19 08:00:08,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:08,227 INFO L225 Difference]: With dead ends: 64 [2023-11-19 08:00:08,227 INFO L226 Difference]: Without dead ends: 60 [2023-11-19 08:00:08,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 08:00:08,229 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 29 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:08,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 162 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:00:08,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-11-19 08:00:08,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 56. [2023-11-19 08:00:08,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 46 states have internal predecessors, (52), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 08:00:08,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2023-11-19 08:00:08,249 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 8 [2023-11-19 08:00:08,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:08,250 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2023-11-19 08:00:08,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:08,250 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2023-11-19 08:00:08,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-19 08:00:08,251 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:08,251 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:08,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 08:00:08,252 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 08:00:08,252 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:08,252 INFO L85 PathProgramCache]: Analyzing trace with hash -749725533, now seen corresponding path program 1 times [2023-11-19 08:00:08,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:08,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292024785] [2023-11-19 08:00:08,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:08,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:08,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:08,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:08,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:08,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292024785] [2023-11-19 08:00:08,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292024785] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:08,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:08,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 08:00:08,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984506906] [2023-11-19 08:00:08,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:08,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 08:00:08,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:08,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 08:00:08,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:00:08,369 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:08,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:08,409 INFO L93 Difference]: Finished difference Result 58 states and 70 transitions. [2023-11-19 08:00:08,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 08:00:08,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-19 08:00:08,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:08,412 INFO L225 Difference]: With dead ends: 58 [2023-11-19 08:00:08,414 INFO L226 Difference]: Without dead ends: 56 [2023-11-19 08:00:08,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 08:00:08,416 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 14 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:08,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 72 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:00:08,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-11-19 08:00:08,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2023-11-19 08:00:08,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 44 states have internal predecessors, (50), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 08:00:08,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2023-11-19 08:00:08,430 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 13 [2023-11-19 08:00:08,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:08,430 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2023-11-19 08:00:08,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:08,431 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2023-11-19 08:00:08,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-19 08:00:08,431 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:08,432 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:08,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 08:00:08,432 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 08:00:08,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:08,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1766654982, now seen corresponding path program 1 times [2023-11-19 08:00:08,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:08,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151227526] [2023-11-19 08:00:08,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:08,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:08,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:08,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:08,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:08,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151227526] [2023-11-19 08:00:08,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151227526] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:08,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:08,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-19 08:00:08,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736340647] [2023-11-19 08:00:08,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:08,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:00:08,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:08,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:00:08,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-19 08:00:08,545 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:08,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:08,699 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2023-11-19 08:00:08,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:00:08,704 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2023-11-19 08:00:08,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:08,705 INFO L225 Difference]: With dead ends: 54 [2023-11-19 08:00:08,706 INFO L226 Difference]: Without dead ends: 50 [2023-11-19 08:00:08,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-19 08:00:08,708 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 55 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:08,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 92 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:00:08,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-11-19 08:00:08,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-11-19 08:00:08,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 40 states have internal predecessors, (46), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-19 08:00:08,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2023-11-19 08:00:08,723 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 14 [2023-11-19 08:00:08,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:08,723 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2023-11-19 08:00:08,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:08,724 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2023-11-19 08:00:08,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-19 08:00:08,730 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:08,730 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:08,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 08:00:08,730 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 08:00:08,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:08,732 INFO L85 PathProgramCache]: Analyzing trace with hash 2097999453, now seen corresponding path program 1 times [2023-11-19 08:00:08,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:08,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370415390] [2023-11-19 08:00:08,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:08,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:08,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:08,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:00:08,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:08,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-19 08:00:08,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:08,934 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 08:00:08,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:08,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370415390] [2023-11-19 08:00:08,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370415390] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:08,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:08,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:00:08,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147259118] [2023-11-19 08:00:08,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:08,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:00:08,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:08,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:00:08,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:00:08,938 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 08:00:08,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:08,981 INFO L93 Difference]: Finished difference Result 76 states and 94 transitions. [2023-11-19 08:00:08,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:00:08,982 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2023-11-19 08:00:08,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:08,984 INFO L225 Difference]: With dead ends: 76 [2023-11-19 08:00:08,984 INFO L226 Difference]: Without dead ends: 71 [2023-11-19 08:00:08,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:00:08,986 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 5 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:08,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 148 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:00:08,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-11-19 08:00:08,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 63. [2023-11-19 08:00:09,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 50 states have internal predecessors, (56), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (13), 9 states have call predecessors, (13), 8 states have call successors, (13) [2023-11-19 08:00:09,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 78 transitions. [2023-11-19 08:00:09,003 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 78 transitions. Word has length 23 [2023-11-19 08:00:09,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:09,003 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 78 transitions. [2023-11-19 08:00:09,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 08:00:09,004 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 78 transitions. [2023-11-19 08:00:09,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-19 08:00:09,006 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:09,006 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:09,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 08:00:09,006 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 08:00:09,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:09,007 INFO L85 PathProgramCache]: Analyzing trace with hash 624421350, now seen corresponding path program 1 times [2023-11-19 08:00:09,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:09,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833294476] [2023-11-19 08:00:09,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:09,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:09,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:09,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:00:09,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:09,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-19 08:00:09,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:09,171 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 08:00:09,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:09,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833294476] [2023-11-19 08:00:09,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833294476] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:00:09,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227043606] [2023-11-19 08:00:09,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:09,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:09,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:09,175 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:09,221 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 08:00:09,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:09,273 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 08:00:09,278 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:09,417 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:09,417 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:00:09,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227043606] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:09,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:00:09,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2023-11-19 08:00:09,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649793948] [2023-11-19 08:00:09,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:09,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 08:00:09,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:09,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 08:00:09,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-19 08:00:09,420 INFO L87 Difference]: Start difference. First operand 63 states and 78 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 08:00:09,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:09,576 INFO L93 Difference]: Finished difference Result 111 states and 134 transitions. [2023-11-19 08:00:09,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 08:00:09,577 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2023-11-19 08:00:09,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:09,580 INFO L225 Difference]: With dead ends: 111 [2023-11-19 08:00:09,580 INFO L226 Difference]: Without dead ends: 61 [2023-11-19 08:00:09,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-19 08:00:09,590 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 35 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:09,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 139 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:00:09,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-11-19 08:00:09,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2023-11-19 08:00:09,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 44 states have (on average 1.2045454545454546) internal successors, (53), 47 states have internal predecessors, (53), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2023-11-19 08:00:09,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 71 transitions. [2023-11-19 08:00:09,613 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 71 transitions. Word has length 24 [2023-11-19 08:00:09,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:09,614 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 71 transitions. [2023-11-19 08:00:09,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 08:00:09,614 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 71 transitions. [2023-11-19 08:00:09,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-19 08:00:09,616 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:09,616 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:09,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 08:00:09,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 08:00:09,837 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 08:00:09,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:09,838 INFO L85 PathProgramCache]: Analyzing trace with hash 120521327, now seen corresponding path program 1 times [2023-11-19 08:00:09,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:09,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925870681] [2023-11-19 08:00:09,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:09,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:09,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:09,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:00:09,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:10,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-19 08:00:10,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:10,034 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 08:00:10,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:10,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925870681] [2023-11-19 08:00:10,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925870681] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:10,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:10,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:00:10,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740781318] [2023-11-19 08:00:10,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:10,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:00:10,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:10,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:00:10,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:00:10,038 INFO L87 Difference]: Start difference. First operand 59 states and 71 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 08:00:10,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:10,102 INFO L93 Difference]: Finished difference Result 85 states and 108 transitions. [2023-11-19 08:00:10,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:00:10,103 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2023-11-19 08:00:10,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:10,105 INFO L225 Difference]: With dead ends: 85 [2023-11-19 08:00:10,105 INFO L226 Difference]: Without dead ends: 80 [2023-11-19 08:00:10,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:00:10,107 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 5 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:10,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 151 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:00:10,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-11-19 08:00:10,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 69. [2023-11-19 08:00:10,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 51 states have (on average 1.1764705882352942) internal successors, (60), 55 states have internal predecessors, (60), 10 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (19), 10 states have call predecessors, (19), 9 states have call successors, (19) [2023-11-19 08:00:10,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 89 transitions. [2023-11-19 08:00:10,122 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 89 transitions. Word has length 25 [2023-11-19 08:00:10,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:10,130 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 89 transitions. [2023-11-19 08:00:10,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 08:00:10,131 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 89 transitions. [2023-11-19 08:00:10,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-19 08:00:10,132 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:10,133 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:10,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 08:00:10,133 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 08:00:10,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:10,134 INFO L85 PathProgramCache]: Analyzing trace with hash -473230649, now seen corresponding path program 1 times [2023-11-19 08:00:10,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:10,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017999094] [2023-11-19 08:00:10,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:10,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:10,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:10,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-19 08:00:10,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:10,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-19 08:00:10,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:10,284 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-19 08:00:10,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:10,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017999094] [2023-11-19 08:00:10,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017999094] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:10,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:10,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:00:10,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821886009] [2023-11-19 08:00:10,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:10,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:00:10,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:10,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:00:10,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:00:10,290 INFO L87 Difference]: Start difference. First operand 69 states and 89 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 08:00:10,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:10,335 INFO L93 Difference]: Finished difference Result 85 states and 108 transitions. [2023-11-19 08:00:10,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:00:10,336 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2023-11-19 08:00:10,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:10,339 INFO L225 Difference]: With dead ends: 85 [2023-11-19 08:00:10,339 INFO L226 Difference]: Without dead ends: 83 [2023-11-19 08:00:10,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:00:10,345 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 6 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:10,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 115 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:00:10,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-11-19 08:00:10,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 78. [2023-11-19 08:00:10,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 58 states have (on average 1.1551724137931034) internal successors, (67), 62 states have internal predecessors, (67), 11 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (23), 12 states have call predecessors, (23), 10 states have call successors, (23) [2023-11-19 08:00:10,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 101 transitions. [2023-11-19 08:00:10,377 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 101 transitions. Word has length 29 [2023-11-19 08:00:10,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:10,378 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 101 transitions. [2023-11-19 08:00:10,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 08:00:10,382 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 101 transitions. [2023-11-19 08:00:10,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-19 08:00:10,387 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:10,388 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:10,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 08:00:10,389 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 08:00:10,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:10,391 INFO L85 PathProgramCache]: Analyzing trace with hash -1773385638, now seen corresponding path program 1 times [2023-11-19 08:00:10,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:10,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959615177] [2023-11-19 08:00:10,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:10,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:10,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:10,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-19 08:00:10,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:10,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-19 08:00:10,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:10,531 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-19 08:00:10,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:10,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959615177] [2023-11-19 08:00:10,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959615177] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:00:10,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672321202] [2023-11-19 08:00:10,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:10,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:10,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:10,534 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:10,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 08:00:10,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:10,587 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 08:00:10,591 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:10,707 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:10,707 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:00:10,901 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 08:00:10,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672321202] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:00:10,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:00:10,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2023-11-19 08:00:10,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112119089] [2023-11-19 08:00:10,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:00:10,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-19 08:00:10,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:10,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-19 08:00:10,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2023-11-19 08:00:10,905 INFO L87 Difference]: Start difference. First operand 78 states and 101 transitions. Second operand has 19 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 9 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-19 08:00:11,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:11,296 INFO L93 Difference]: Finished difference Result 189 states and 250 transitions. [2023-11-19 08:00:11,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 08:00:11,296 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 9 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 30 [2023-11-19 08:00:11,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:11,298 INFO L225 Difference]: With dead ends: 189 [2023-11-19 08:00:11,299 INFO L226 Difference]: Without dead ends: 120 [2023-11-19 08:00:11,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2023-11-19 08:00:11,302 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 136 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:11,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 367 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 08:00:11,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-11-19 08:00:11,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 106. [2023-11-19 08:00:11,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 80 states have (on average 1.1625) internal successors, (93), 85 states have internal predecessors, (93), 14 states have call successors, (14), 5 states have call predecessors, (14), 8 states have return successors, (32), 15 states have call predecessors, (32), 13 states have call successors, (32) [2023-11-19 08:00:11,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 139 transitions. [2023-11-19 08:00:11,319 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 139 transitions. Word has length 30 [2023-11-19 08:00:11,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:11,320 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 139 transitions. [2023-11-19 08:00:11,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 9 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-19 08:00:11,320 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 139 transitions. [2023-11-19 08:00:11,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-11-19 08:00:11,321 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:11,322 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:11,345 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-19 08:00:11,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-19 08:00:11,537 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 08:00:11,538 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:11,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1796117801, now seen corresponding path program 1 times [2023-11-19 08:00:11,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:11,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521470911] [2023-11-19 08:00:11,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:11,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:11,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:11,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-19 08:00:11,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:11,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-19 08:00:11,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:11,637 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-19 08:00:11,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:11,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521470911] [2023-11-19 08:00:11,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521470911] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:11,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:11,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:00:11,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122888779] [2023-11-19 08:00:11,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:11,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:00:11,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:11,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:00:11,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:00:11,641 INFO L87 Difference]: Start difference. First operand 106 states and 139 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 08:00:11,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:11,691 INFO L93 Difference]: Finished difference Result 140 states and 189 transitions. [2023-11-19 08:00:11,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:00:11,692 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 31 [2023-11-19 08:00:11,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:11,696 INFO L225 Difference]: With dead ends: 140 [2023-11-19 08:00:11,697 INFO L226 Difference]: Without dead ends: 138 [2023-11-19 08:00:11,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:00:11,698 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 6 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:11,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 114 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:00:11,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2023-11-19 08:00:11,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 124. [2023-11-19 08:00:11,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 95 states have (on average 1.1368421052631579) internal successors, (108), 98 states have internal predecessors, (108), 17 states have call successors, (17), 5 states have call predecessors, (17), 8 states have return successors, (40), 20 states have call predecessors, (40), 16 states have call successors, (40) [2023-11-19 08:00:11,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 165 transitions. [2023-11-19 08:00:11,736 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 165 transitions. Word has length 31 [2023-11-19 08:00:11,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:11,737 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 165 transitions. [2023-11-19 08:00:11,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 08:00:11,737 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 165 transitions. [2023-11-19 08:00:11,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-19 08:00:11,743 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:11,743 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:11,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 08:00:11,745 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 08:00:11,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:11,745 INFO L85 PathProgramCache]: Analyzing trace with hash 516283740, now seen corresponding path program 1 times [2023-11-19 08:00:11,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:11,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795983877] [2023-11-19 08:00:11,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:11,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:11,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:11,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-19 08:00:11,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:11,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-19 08:00:11,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:11,904 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-19 08:00:11,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:11,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795983877] [2023-11-19 08:00:11,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795983877] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:00:11,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638169973] [2023-11-19 08:00:11,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:11,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:11,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:11,909 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:11,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 08:00:11,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:11,962 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 08:00:11,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:12,108 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:12,108 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:00:12,274 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 08:00:12,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638169973] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:00:12,275 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:00:12,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 16 [2023-11-19 08:00:12,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757968951] [2023-11-19 08:00:12,275 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:00:12,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-19 08:00:12,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:12,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-19 08:00:12,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2023-11-19 08:00:12,277 INFO L87 Difference]: Start difference. First operand 124 states and 165 transitions. Second operand has 16 states, 15 states have (on average 3.533333333333333) internal successors, (53), 13 states have internal predecessors, (53), 7 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-19 08:00:12,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:12,651 INFO L93 Difference]: Finished difference Result 265 states and 352 transitions. [2023-11-19 08:00:12,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-19 08:00:12,652 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.533333333333333) internal successors, (53), 13 states have internal predecessors, (53), 7 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 36 [2023-11-19 08:00:12,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:12,655 INFO L225 Difference]: With dead ends: 265 [2023-11-19 08:00:12,655 INFO L226 Difference]: Without dead ends: 156 [2023-11-19 08:00:12,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 61 SyntacticMatches, 8 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2023-11-19 08:00:12,657 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 96 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:12,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 465 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 08:00:12,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2023-11-19 08:00:12,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 139. [2023-11-19 08:00:12,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 107 states have (on average 1.1401869158878504) internal successors, (122), 110 states have internal predecessors, (122), 19 states have call successors, (19), 6 states have call predecessors, (19), 9 states have return successors, (45), 22 states have call predecessors, (45), 18 states have call successors, (45) [2023-11-19 08:00:12,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 186 transitions. [2023-11-19 08:00:12,676 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 186 transitions. Word has length 36 [2023-11-19 08:00:12,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:12,678 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 186 transitions. [2023-11-19 08:00:12,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.533333333333333) internal successors, (53), 13 states have internal predecessors, (53), 7 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-19 08:00:12,679 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 186 transitions. [2023-11-19 08:00:12,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-19 08:00:12,681 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:12,682 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:12,710 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 08:00:12,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:12,901 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 08:00:12,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:12,902 INFO L85 PathProgramCache]: Analyzing trace with hash 311039018, now seen corresponding path program 2 times [2023-11-19 08:00:12,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:12,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978920660] [2023-11-19 08:00:12,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:12,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:12,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:12,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-19 08:00:12,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:12,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-19 08:00:12,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:12,992 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-19 08:00:12,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:12,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978920660] [2023-11-19 08:00:12,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978920660] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:00:12,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1123471413] [2023-11-19 08:00:12,993 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 08:00:12,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:12,994 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:12,995 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:13,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 08:00:13,043 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 08:00:13,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 08:00:13,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 08:00:13,046 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:13,101 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-19 08:00:13,101 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:00:13,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1123471413] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:13,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:00:13,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2023-11-19 08:00:13,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552613549] [2023-11-19 08:00:13,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:13,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:00:13,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:13,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:00:13,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-19 08:00:13,107 INFO L87 Difference]: Start difference. First operand 139 states and 186 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 08:00:13,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:13,141 INFO L93 Difference]: Finished difference Result 147 states and 196 transitions. [2023-11-19 08:00:13,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:00:13,141 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 36 [2023-11-19 08:00:13,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:13,143 INFO L225 Difference]: With dead ends: 147 [2023-11-19 08:00:13,144 INFO L226 Difference]: Without dead ends: 146 [2023-11-19 08:00:13,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-19 08:00:13,145 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 6 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:13,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 140 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:00:13,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2023-11-19 08:00:13,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 143. [2023-11-19 08:00:13,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 111 states have (on average 1.135135135135135) internal successors, (126), 112 states have internal predecessors, (126), 19 states have call successors, (19), 6 states have call predecessors, (19), 9 states have return successors, (45), 24 states have call predecessors, (45), 18 states have call successors, (45) [2023-11-19 08:00:13,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 190 transitions. [2023-11-19 08:00:13,160 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 190 transitions. Word has length 36 [2023-11-19 08:00:13,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:13,161 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 190 transitions. [2023-11-19 08:00:13,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 08:00:13,161 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 190 transitions. [2023-11-19 08:00:13,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-19 08:00:13,162 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:13,162 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:13,181 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 08:00:13,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:13,381 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 08:00:13,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:13,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1052275065, now seen corresponding path program 1 times [2023-11-19 08:00:13,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:13,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038074521] [2023-11-19 08:00:13,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:13,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:13,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:13,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-19 08:00:13,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:13,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-19 08:00:13,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:13,459 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-19 08:00:13,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:13,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038074521] [2023-11-19 08:00:13,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038074521] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:00:13,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046245703] [2023-11-19 08:00:13,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:13,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:13,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:13,461 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:13,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 08:00:13,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:13,507 INFO L262 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 08:00:13,508 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:13,559 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-19 08:00:13,559 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:00:13,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046245703] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:13,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:00:13,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2023-11-19 08:00:13,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338241440] [2023-11-19 08:00:13,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:13,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 08:00:13,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:13,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 08:00:13,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-19 08:00:13,575 INFO L87 Difference]: Start difference. First operand 143 states and 190 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 08:00:13,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:13,610 INFO L93 Difference]: Finished difference Result 161 states and 211 transitions. [2023-11-19 08:00:13,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 08:00:13,610 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 37 [2023-11-19 08:00:13,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:13,612 INFO L225 Difference]: With dead ends: 161 [2023-11-19 08:00:13,612 INFO L226 Difference]: Without dead ends: 160 [2023-11-19 08:00:13,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-19 08:00:13,614 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 4 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:13,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 149 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:00:13,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-11-19 08:00:13,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 139. [2023-11-19 08:00:13,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 108 states have (on average 1.1388888888888888) internal successors, (123), 109 states have internal predecessors, (123), 18 states have call successors, (18), 6 states have call predecessors, (18), 9 states have return successors, (42), 23 states have call predecessors, (42), 17 states have call successors, (42) [2023-11-19 08:00:13,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 183 transitions. [2023-11-19 08:00:13,630 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 183 transitions. Word has length 37 [2023-11-19 08:00:13,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:13,631 INFO L495 AbstractCegarLoop]: Abstraction has 139 states and 183 transitions. [2023-11-19 08:00:13,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 08:00:13,631 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 183 transitions. [2023-11-19 08:00:13,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-19 08:00:13,632 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:13,632 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:13,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 08:00:13,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:13,853 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 08:00:13,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:13,853 INFO L85 PathProgramCache]: Analyzing trace with hash -463506674, now seen corresponding path program 2 times [2023-11-19 08:00:13,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:13,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270338818] [2023-11-19 08:00:13,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:13,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:13,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:13,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-19 08:00:13,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:13,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-19 08:00:13,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:13,933 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 08:00:13,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:13,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270338818] [2023-11-19 08:00:13,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270338818] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:00:13,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594176335] [2023-11-19 08:00:13,934 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 08:00:13,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:13,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:13,936 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:13,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 08:00:13,993 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 08:00:13,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 08:00:13,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 08:00:13,996 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:14,032 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 08:00:14,032 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 08:00:14,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594176335] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:14,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 08:00:14,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2023-11-19 08:00:14,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906668770] [2023-11-19 08:00:14,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:14,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:00:14,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:14,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:00:14,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-19 08:00:14,035 INFO L87 Difference]: Start difference. First operand 139 states and 183 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 08:00:14,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:14,063 INFO L93 Difference]: Finished difference Result 150 states and 198 transitions. [2023-11-19 08:00:14,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:00:14,064 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2023-11-19 08:00:14,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:14,065 INFO L225 Difference]: With dead ends: 150 [2023-11-19 08:00:14,066 INFO L226 Difference]: Without dead ends: 149 [2023-11-19 08:00:14,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-19 08:00:14,067 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 6 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:14,067 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 140 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:00:14,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2023-11-19 08:00:14,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 145. [2023-11-19 08:00:14,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 114 states have (on average 1.131578947368421) internal successors, (129), 112 states have internal predecessors, (129), 18 states have call successors, (18), 6 states have call predecessors, (18), 9 states have return successors, (42), 26 states have call predecessors, (42), 17 states have call successors, (42) [2023-11-19 08:00:14,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 189 transitions. [2023-11-19 08:00:14,079 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 189 transitions. Word has length 42 [2023-11-19 08:00:14,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:14,080 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 189 transitions. [2023-11-19 08:00:14,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-19 08:00:14,080 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 189 transitions. [2023-11-19 08:00:14,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-19 08:00:14,081 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:14,081 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:14,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 08:00:14,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-19 08:00:14,298 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 08:00:14,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:14,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1483804933, now seen corresponding path program 1 times [2023-11-19 08:00:14,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:14,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933262154] [2023-11-19 08:00:14,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:14,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:14,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:14,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-19 08:00:14,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:14,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-19 08:00:14,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:14,374 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-19 08:00:14,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:14,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933262154] [2023-11-19 08:00:14,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933262154] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:00:14,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352151079] [2023-11-19 08:00:14,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:14,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:14,376 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:14,377 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:14,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 08:00:14,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:14,425 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-19 08:00:14,427 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:14,589 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 08:00:14,589 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:00:14,767 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 08:00:14,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352151079] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:00:14,768 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:00:14,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 13, 13] total 18 [2023-11-19 08:00:14,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687638042] [2023-11-19 08:00:14,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:00:14,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-19 08:00:14,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:14,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-19 08:00:14,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2023-11-19 08:00:14,770 INFO L87 Difference]: Start difference. First operand 145 states and 189 transitions. Second operand has 18 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 14 states have internal predecessors, (60), 8 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-19 08:00:15,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:15,240 INFO L93 Difference]: Finished difference Result 259 states and 346 transitions. [2023-11-19 08:00:15,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-19 08:00:15,241 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 14 states have internal predecessors, (60), 8 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 43 [2023-11-19 08:00:15,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:15,242 INFO L225 Difference]: With dead ends: 259 [2023-11-19 08:00:15,242 INFO L226 Difference]: Without dead ends: 142 [2023-11-19 08:00:15,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 72 SyntacticMatches, 10 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=125, Invalid=631, Unknown=0, NotChecked=0, Total=756 [2023-11-19 08:00:15,245 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 155 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:15,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 308 Invalid, 629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-19 08:00:15,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2023-11-19 08:00:15,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 132. [2023-11-19 08:00:15,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 103 states have (on average 1.1262135922330097) internal successors, (116), 103 states have internal predecessors, (116), 16 states have call successors, (16), 6 states have call predecessors, (16), 9 states have return successors, (32), 22 states have call predecessors, (32), 15 states have call successors, (32) [2023-11-19 08:00:15,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 164 transitions. [2023-11-19 08:00:15,257 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 164 transitions. Word has length 43 [2023-11-19 08:00:15,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:15,258 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 164 transitions. [2023-11-19 08:00:15,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 14 states have internal predecessors, (60), 8 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-19 08:00:15,258 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 164 transitions. [2023-11-19 08:00:15,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-19 08:00:15,259 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:15,260 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:15,286 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 08:00:15,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-19 08:00:15,473 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 08:00:15,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:15,474 INFO L85 PathProgramCache]: Analyzing trace with hash -164147964, now seen corresponding path program 1 times [2023-11-19 08:00:15,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:15,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447377306] [2023-11-19 08:00:15,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:15,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:15,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:15,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-19 08:00:15,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:15,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-19 08:00:15,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:15,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-19 08:00:15,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:15,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-19 08:00:15,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:15,564 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-19 08:00:15,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:15,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447377306] [2023-11-19 08:00:15,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447377306] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:00:15,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178361086] [2023-11-19 08:00:15,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:15,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:15,566 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:15,567 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:15,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 08:00:15,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:15,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-19 08:00:15,623 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:15,756 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 08:00:15,756 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:00:15,934 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-19 08:00:15,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178361086] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:00:15,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:00:15,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 11, 11] total 15 [2023-11-19 08:00:15,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889310303] [2023-11-19 08:00:15,935 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:00:15,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-19 08:00:15,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:15,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-19 08:00:15,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2023-11-19 08:00:15,937 INFO L87 Difference]: Start difference. First operand 132 states and 164 transitions. Second operand has 15 states, 14 states have (on average 4.571428571428571) internal successors, (64), 12 states have internal predecessors, (64), 7 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-19 08:00:16,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:16,217 INFO L93 Difference]: Finished difference Result 239 states and 300 transitions. [2023-11-19 08:00:16,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-19 08:00:16,218 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.571428571428571) internal successors, (64), 12 states have internal predecessors, (64), 7 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 55 [2023-11-19 08:00:16,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:16,219 INFO L225 Difference]: With dead ends: 239 [2023-11-19 08:00:16,220 INFO L226 Difference]: Without dead ends: 136 [2023-11-19 08:00:16,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 103 SyntacticMatches, 8 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2023-11-19 08:00:16,222 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 107 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:16,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 177 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-19 08:00:16,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-11-19 08:00:16,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 128. [2023-11-19 08:00:16,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 99 states have (on average 1.1111111111111112) internal successors, (110), 101 states have internal predecessors, (110), 16 states have call successors, (16), 6 states have call predecessors, (16), 9 states have return successors, (24), 20 states have call predecessors, (24), 15 states have call successors, (24) [2023-11-19 08:00:16,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 150 transitions. [2023-11-19 08:00:16,233 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 150 transitions. Word has length 55 [2023-11-19 08:00:16,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:16,233 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 150 transitions. [2023-11-19 08:00:16,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.571428571428571) internal successors, (64), 12 states have internal predecessors, (64), 7 states have call successors, (12), 4 states have call predecessors, (12), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-19 08:00:16,234 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 150 transitions. [2023-11-19 08:00:16,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-19 08:00:16,235 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:16,235 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:16,261 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 08:00:16,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-19 08:00:16,456 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 08:00:16,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:16,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1424540440, now seen corresponding path program 1 times [2023-11-19 08:00:16,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:16,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683521374] [2023-11-19 08:00:16,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:16,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:16,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:16,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-19 08:00:16,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:16,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-19 08:00:16,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:16,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-19 08:00:16,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:16,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-19 08:00:16,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:16,619 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-19 08:00:16,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:16,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683521374] [2023-11-19 08:00:16,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683521374] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:16,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:16,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-19 08:00:16,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290073352] [2023-11-19 08:00:16,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:16,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-19 08:00:16,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:16,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-19 08:00:16,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-19 08:00:16,622 INFO L87 Difference]: Start difference. First operand 128 states and 150 transitions. Second operand has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 10 states have internal predecessors, (31), 3 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-19 08:00:16,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:16,699 INFO L93 Difference]: Finished difference Result 160 states and 195 transitions. [2023-11-19 08:00:16,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-19 08:00:16,700 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 10 states have internal predecessors, (31), 3 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 51 [2023-11-19 08:00:16,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:16,711 INFO L225 Difference]: With dead ends: 160 [2023-11-19 08:00:16,711 INFO L226 Difference]: Without dead ends: 159 [2023-11-19 08:00:16,712 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-19 08:00:16,713 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 6 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:16,713 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 223 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:00:16,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-11-19 08:00:16,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 143. [2023-11-19 08:00:16,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 110 states have (on average 1.1) internal successors, (121), 113 states have internal predecessors, (121), 18 states have call successors, (18), 6 states have call predecessors, (18), 11 states have return successors, (36), 23 states have call predecessors, (36), 17 states have call successors, (36) [2023-11-19 08:00:16,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 175 transitions. [2023-11-19 08:00:16,725 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 175 transitions. Word has length 51 [2023-11-19 08:00:16,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:16,726 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 175 transitions. [2023-11-19 08:00:16,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 10 states have internal predecessors, (31), 3 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-19 08:00:16,726 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 175 transitions. [2023-11-19 08:00:16,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-19 08:00:16,727 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:16,727 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:16,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-19 08:00:16,728 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 08:00:16,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:16,728 INFO L85 PathProgramCache]: Analyzing trace with hash -814175986, now seen corresponding path program 1 times [2023-11-19 08:00:16,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:16,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710067390] [2023-11-19 08:00:16,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:16,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:16,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:16,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-19 08:00:16,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:16,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-19 08:00:16,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:16,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-19 08:00:16,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:16,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-19 08:00:16,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:16,797 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-19 08:00:16,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:16,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710067390] [2023-11-19 08:00:16,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710067390] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 08:00:16,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 08:00:16,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 08:00:16,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803401513] [2023-11-19 08:00:16,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 08:00:16,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 08:00:16,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:16,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 08:00:16,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:00:16,800 INFO L87 Difference]: Start difference. First operand 143 states and 175 transitions. Second operand has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 08:00:16,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:16,829 INFO L93 Difference]: Finished difference Result 145 states and 176 transitions. [2023-11-19 08:00:16,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 08:00:16,829 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 55 [2023-11-19 08:00:16,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:16,831 INFO L225 Difference]: With dead ends: 145 [2023-11-19 08:00:16,831 INFO L226 Difference]: Without dead ends: 144 [2023-11-19 08:00:16,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 08:00:16,832 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 4 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:16,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 145 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 08:00:16,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2023-11-19 08:00:16,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 143. [2023-11-19 08:00:16,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 110 states have (on average 1.0818181818181818) internal successors, (119), 113 states have internal predecessors, (119), 18 states have call successors, (18), 6 states have call predecessors, (18), 11 states have return successors, (36), 23 states have call predecessors, (36), 17 states have call successors, (36) [2023-11-19 08:00:16,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 173 transitions. [2023-11-19 08:00:16,845 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 173 transitions. Word has length 55 [2023-11-19 08:00:16,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:16,845 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 173 transitions. [2023-11-19 08:00:16,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-19 08:00:16,846 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 173 transitions. [2023-11-19 08:00:16,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-19 08:00:16,847 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:16,847 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:16,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-19 08:00:16,847 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 08:00:16,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:16,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1958736820, now seen corresponding path program 1 times [2023-11-19 08:00:16,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:16,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638503813] [2023-11-19 08:00:16,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:16,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:16,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:16,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-19 08:00:16,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:16,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-19 08:00:16,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:16,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-19 08:00:16,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:16,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-19 08:00:16,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:16,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-19 08:00:17,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:17,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-19 08:00:17,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:17,010 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 14 proven. 21 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-19 08:00:17,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:17,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638503813] [2023-11-19 08:00:17,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638503813] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:00:17,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930760549] [2023-11-19 08:00:17,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:17,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:17,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:17,012 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:17,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 08:00:17,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:17,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 08:00:17,079 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:17,212 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-19 08:00:17,212 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:00:17,454 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-19 08:00:17,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930760549] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:00:17,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:00:17,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 7] total 23 [2023-11-19 08:00:17,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204034402] [2023-11-19 08:00:17,456 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:00:17,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-19 08:00:17,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:17,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-19 08:00:17,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2023-11-19 08:00:17,458 INFO L87 Difference]: Start difference. First operand 143 states and 173 transitions. Second operand has 23 states, 22 states have (on average 3.590909090909091) internal successors, (79), 21 states have internal predecessors, (79), 9 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (14), 11 states have call predecessors, (14), 7 states have call successors, (14) [2023-11-19 08:00:18,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:18,217 INFO L93 Difference]: Finished difference Result 253 states and 314 transitions. [2023-11-19 08:00:18,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-19 08:00:18,218 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.590909090909091) internal successors, (79), 21 states have internal predecessors, (79), 9 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (14), 11 states have call predecessors, (14), 7 states have call successors, (14) Word has length 68 [2023-11-19 08:00:18,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:18,220 INFO L225 Difference]: With dead ends: 253 [2023-11-19 08:00:18,220 INFO L226 Difference]: Without dead ends: 162 [2023-11-19 08:00:18,222 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 137 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=258, Invalid=1548, Unknown=0, NotChecked=0, Total=1806 [2023-11-19 08:00:18,223 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 116 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 651 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:18,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 233 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 651 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 08:00:18,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2023-11-19 08:00:18,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 138. [2023-11-19 08:00:18,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 106 states have (on average 1.0660377358490567) internal successors, (113), 110 states have internal predecessors, (113), 18 states have call successors, (18), 6 states have call predecessors, (18), 11 states have return successors, (26), 21 states have call predecessors, (26), 17 states have call successors, (26) [2023-11-19 08:00:18,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 157 transitions. [2023-11-19 08:00:18,237 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 157 transitions. Word has length 68 [2023-11-19 08:00:18,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:18,238 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 157 transitions. [2023-11-19 08:00:18,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.590909090909091) internal successors, (79), 21 states have internal predecessors, (79), 9 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (14), 11 states have call predecessors, (14), 7 states have call successors, (14) [2023-11-19 08:00:18,238 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 157 transitions. [2023-11-19 08:00:18,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-19 08:00:18,240 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:18,240 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:18,265 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 08:00:18,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:18,457 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 08:00:18,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:18,458 INFO L85 PathProgramCache]: Analyzing trace with hash 103911917, now seen corresponding path program 1 times [2023-11-19 08:00:18,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:18,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189901278] [2023-11-19 08:00:18,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:18,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:18,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:18,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-19 08:00:18,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:18,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-19 08:00:18,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:18,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-19 08:00:18,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:18,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-19 08:00:18,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:18,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-19 08:00:18,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:18,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-19 08:00:18,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:18,671 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 5 proven. 31 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-19 08:00:18,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:18,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189901278] [2023-11-19 08:00:18,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189901278] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:00:18,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [261393287] [2023-11-19 08:00:18,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:18,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:18,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:18,673 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:18,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 08:00:18,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:18,729 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-19 08:00:18,731 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:18,921 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2023-11-19 08:00:18,921 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:00:19,555 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-19 08:00:19,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [261393287] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:00:19,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:00:19,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 11] total 26 [2023-11-19 08:00:19,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944303374] [2023-11-19 08:00:19,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:00:19,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-19 08:00:19,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:19,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-19 08:00:19,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=580, Unknown=0, NotChecked=0, Total=650 [2023-11-19 08:00:19,559 INFO L87 Difference]: Start difference. First operand 138 states and 157 transitions. Second operand has 26 states, 25 states have (on average 3.56) internal successors, (89), 24 states have internal predecessors, (89), 10 states have call successors, (13), 3 states have call predecessors, (13), 8 states have return successors, (15), 11 states have call predecessors, (15), 8 states have call successors, (15) [2023-11-19 08:00:20,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:20,382 INFO L93 Difference]: Finished difference Result 226 states and 261 transitions. [2023-11-19 08:00:20,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2023-11-19 08:00:20,383 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 3.56) internal successors, (89), 24 states have internal predecessors, (89), 10 states have call successors, (13), 3 states have call predecessors, (13), 8 states have return successors, (15), 11 states have call predecessors, (15), 8 states have call successors, (15) Word has length 69 [2023-11-19 08:00:20,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:20,384 INFO L225 Difference]: With dead ends: 226 [2023-11-19 08:00:20,384 INFO L226 Difference]: Without dead ends: 122 [2023-11-19 08:00:20,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 141 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=306, Invalid=2046, Unknown=0, NotChecked=0, Total=2352 [2023-11-19 08:00:20,387 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 101 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:20,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 267 Invalid, 811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-19 08:00:20,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2023-11-19 08:00:20,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 89. [2023-11-19 08:00:20,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 68 states have (on average 1.0588235294117647) internal successors, (72), 72 states have internal predecessors, (72), 11 states have call successors, (11), 6 states have call predecessors, (11), 8 states have return successors, (13), 10 states have call predecessors, (13), 10 states have call successors, (13) [2023-11-19 08:00:20,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 96 transitions. [2023-11-19 08:00:20,396 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 96 transitions. Word has length 69 [2023-11-19 08:00:20,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:20,396 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 96 transitions. [2023-11-19 08:00:20,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 3.56) internal successors, (89), 24 states have internal predecessors, (89), 10 states have call successors, (13), 3 states have call predecessors, (13), 8 states have return successors, (15), 11 states have call predecessors, (15), 8 states have call successors, (15) [2023-11-19 08:00:20,397 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 96 transitions. [2023-11-19 08:00:20,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-19 08:00:20,398 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:20,398 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:20,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 08:00:20,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:20,613 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 08:00:20,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:20,613 INFO L85 PathProgramCache]: Analyzing trace with hash 397031206, now seen corresponding path program 1 times [2023-11-19 08:00:20,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:20,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224997147] [2023-11-19 08:00:20,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:20,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:20,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:20,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:00:20,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:20,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-19 08:00:20,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:20,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-19 08:00:20,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:20,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-19 08:00:20,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:20,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-19 08:00:20,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:20,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-19 08:00:20,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:20,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-19 08:00:20,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:20,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-19 08:00:20,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:20,970 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-11-19 08:00:20,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:20,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224997147] [2023-11-19 08:00:20,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224997147] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:00:20,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087491161] [2023-11-19 08:00:20,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:20,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:20,972 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:20,973 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:20,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 08:00:21,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:21,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-19 08:00:21,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:21,206 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 8 proven. 19 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-19 08:00:21,206 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:00:21,760 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 16 proven. 19 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-11-19 08:00:21,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087491161] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:00:21,761 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:00:21,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 15] total 28 [2023-11-19 08:00:21,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488986504] [2023-11-19 08:00:21,762 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:00:21,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-19 08:00:21,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:21,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-19 08:00:21,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=699, Unknown=0, NotChecked=0, Total=812 [2023-11-19 08:00:21,764 INFO L87 Difference]: Start difference. First operand 89 states and 96 transitions. Second operand has 29 states, 28 states have (on average 2.8214285714285716) internal successors, (79), 29 states have internal predecessors, (79), 7 states have call successors, (9), 1 states have call predecessors, (9), 10 states have return successors, (17), 16 states have call predecessors, (17), 7 states have call successors, (17) [2023-11-19 08:00:22,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:22,016 INFO L93 Difference]: Finished difference Result 124 states and 135 transitions. [2023-11-19 08:00:22,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-19 08:00:22,017 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.8214285714285716) internal successors, (79), 29 states have internal predecessors, (79), 7 states have call successors, (9), 1 states have call predecessors, (9), 10 states have return successors, (17), 16 states have call predecessors, (17), 7 states have call successors, (17) Word has length 83 [2023-11-19 08:00:22,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:22,018 INFO L225 Difference]: With dead ends: 124 [2023-11-19 08:00:22,018 INFO L226 Difference]: Without dead ends: 123 [2023-11-19 08:00:22,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 165 SyntacticMatches, 5 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 354 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=183, Invalid=1077, Unknown=0, NotChecked=0, Total=1260 [2023-11-19 08:00:22,020 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 15 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 434 SdHoareTripleChecker+Invalid, 188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:22,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 434 Invalid, 188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:00:22,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2023-11-19 08:00:22,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 88. [2023-11-19 08:00:22,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 68 states have (on average 1.0441176470588236) internal successors, (71), 71 states have internal predecessors, (71), 11 states have call successors, (11), 6 states have call predecessors, (11), 8 states have return successors, (13), 10 states have call predecessors, (13), 10 states have call successors, (13) [2023-11-19 08:00:22,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 95 transitions. [2023-11-19 08:00:22,030 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 95 transitions. Word has length 83 [2023-11-19 08:00:22,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:22,031 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 95 transitions. [2023-11-19 08:00:22,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.8214285714285716) internal successors, (79), 29 states have internal predecessors, (79), 7 states have call successors, (9), 1 states have call predecessors, (9), 10 states have return successors, (17), 16 states have call predecessors, (17), 7 states have call successors, (17) [2023-11-19 08:00:22,031 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 95 transitions. [2023-11-19 08:00:22,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-19 08:00:22,033 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 08:00:22,033 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:22,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-19 08:00:22,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:22,249 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-19 08:00:22,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 08:00:22,250 INFO L85 PathProgramCache]: Analyzing trace with hash -576934403, now seen corresponding path program 1 times [2023-11-19 08:00:22,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 08:00:22,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311106119] [2023-11-19 08:00:22,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:22,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 08:00:22,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:22,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-19 08:00:22,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:22,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-19 08:00:22,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:22,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-19 08:00:22,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:22,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-19 08:00:22,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:22,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-19 08:00:22,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:22,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-19 08:00:22,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:22,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-19 08:00:22,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:22,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-19 08:00:22,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:22,599 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-11-19 08:00:22,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 08:00:22,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311106119] [2023-11-19 08:00:22,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311106119] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 08:00:22,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489965515] [2023-11-19 08:00:22,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 08:00:22,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:22,601 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 08:00:22,602 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 08:00:22,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-19 08:00:22,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 08:00:22,673 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-19 08:00:22,675 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 08:00:22,823 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-11-19 08:00:22,823 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 08:00:23,448 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 23 proven. 13 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-11-19 08:00:23,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489965515] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 08:00:23,449 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 08:00:23,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 16] total 26 [2023-11-19 08:00:23,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358496865] [2023-11-19 08:00:23,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 08:00:23,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-19 08:00:23,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 08:00:23,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-19 08:00:23,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2023-11-19 08:00:23,452 INFO L87 Difference]: Start difference. First operand 88 states and 95 transitions. Second operand has 27 states, 26 states have (on average 2.923076923076923) internal successors, (76), 27 states have internal predecessors, (76), 7 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (17), 17 states have call predecessors, (17), 7 states have call successors, (17) [2023-11-19 08:00:23,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 08:00:23,567 INFO L93 Difference]: Finished difference Result 96 states and 103 transitions. [2023-11-19 08:00:23,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 08:00:23,568 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.923076923076923) internal successors, (76), 27 states have internal predecessors, (76), 7 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (17), 17 states have call predecessors, (17), 7 states have call successors, (17) Word has length 84 [2023-11-19 08:00:23,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 08:00:23,568 INFO L225 Difference]: With dead ends: 96 [2023-11-19 08:00:23,569 INFO L226 Difference]: Without dead ends: 0 [2023-11-19 08:00:23,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 167 SyntacticMatches, 7 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2023-11-19 08:00:23,571 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 4 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 08:00:23,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 437 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 08:00:23,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-19 08:00:23,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-19 08:00:23,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 08:00:23,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-19 08:00:23,572 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 84 [2023-11-19 08:00:23,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 08:00:23,573 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-19 08:00:23,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.923076923076923) internal successors, (76), 27 states have internal predecessors, (76), 7 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (17), 17 states have call predecessors, (17), 7 states have call successors, (17) [2023-11-19 08:00:23,573 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-19 08:00:23,573 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-19 08:00:23,577 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 12 remaining) [2023-11-19 08:00:23,578 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2023-11-19 08:00:23,578 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2023-11-19 08:00:23,578 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2023-11-19 08:00:23,578 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining) [2023-11-19 08:00:23,578 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 12 remaining) [2023-11-19 08:00:23,579 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 12 remaining) [2023-11-19 08:00:23,579 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 12 remaining) [2023-11-19 08:00:23,579 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2023-11-19 08:00:23,579 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2023-11-19 08:00:23,579 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2023-11-19 08:00:23,580 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2023-11-19 08:00:23,601 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-19 08:00:23,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 08:00:23,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-19 08:00:24,612 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-19 08:00:24,613 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-11-19 08:00:24,613 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-11-19 08:00:24,613 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-19 08:00:24,613 INFO L899 garLoopResultBuilder]: For program point L41(line 41) no Hoare annotation was computed. [2023-11-19 08:00:24,613 INFO L899 garLoopResultBuilder]: For program point main_returnLabel#1(lines 37 44) no Hoare annotation was computed. [2023-11-19 08:00:24,613 INFO L899 garLoopResultBuilder]: For program point L40(lines 40 42) no Hoare annotation was computed. [2023-11-19 08:00:24,613 INFO L895 garLoopResultBuilder]: At program point L39(line 39) the Hoare annotation is: (= |ULTIMATE.start_main_~x~0#1| 4) [2023-11-19 08:00:24,614 INFO L899 garLoopResultBuilder]: For program point L39-1(line 39) no Hoare annotation was computed. [2023-11-19 08:00:24,614 INFO L899 garLoopResultBuilder]: For program point L40-2(lines 40 42) no Hoare annotation was computed. [2023-11-19 08:00:24,614 INFO L899 garLoopResultBuilder]: For program point L4(line 4) no Hoare annotation was computed. [2023-11-19 08:00:24,614 INFO L899 garLoopResultBuilder]: For program point fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2023-11-19 08:00:24,614 INFO L899 garLoopResultBuilder]: For program point L25(line 25) no Hoare annotation was computed. [2023-11-19 08:00:24,614 INFO L899 garLoopResultBuilder]: For program point fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2023-11-19 08:00:24,614 INFO L899 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2023-11-19 08:00:24,614 INFO L895 garLoopResultBuilder]: At program point L25-2(line 25) the Hoare annotation is: (and (or (= fibo2_~n |fibo2_#in~n|) (< 3 |fibo2_#in~n|)) (< 1 |fibo2_#in~n|)) [2023-11-19 08:00:24,615 INFO L899 garLoopResultBuilder]: For program point L25-3(line 25) no Hoare annotation was computed. [2023-11-19 08:00:24,615 INFO L899 garLoopResultBuilder]: For program point L25-4(line 25) no Hoare annotation was computed. [2023-11-19 08:00:24,615 INFO L899 garLoopResultBuilder]: For program point L25-5(line 25) no Hoare annotation was computed. [2023-11-19 08:00:24,615 INFO L895 garLoopResultBuilder]: At program point L25-6(line 25) the Hoare annotation is: (let ((.cse0 (< 3 |fibo2_#in~n|))) (and (or (< |fibo2_#in~n| 3) (= |fibo2_#t~ret6| 1) .cse0) (< 1 |fibo2_#in~n|) (or (and (= fibo2_~n |fibo2_#in~n|) (<= 0 |fibo2_#t~ret6|) (<= |fibo2_#t~ret6| 1)) .cse0))) [2023-11-19 08:00:24,615 INFO L899 garLoopResultBuilder]: For program point L25-7(line 25) no Hoare annotation was computed. [2023-11-19 08:00:24,615 INFO L899 garLoopResultBuilder]: For program point L25-8(line 25) no Hoare annotation was computed. [2023-11-19 08:00:24,615 INFO L899 garLoopResultBuilder]: For program point L25-9(line 25) no Hoare annotation was computed. [2023-11-19 08:00:24,615 INFO L899 garLoopResultBuilder]: For program point fibo2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2023-11-19 08:00:24,615 INFO L899 garLoopResultBuilder]: For program point fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2023-11-19 08:00:24,616 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 19 27) the Hoare annotation is: true [2023-11-19 08:00:24,616 INFO L899 garLoopResultBuilder]: For program point fibo2EXIT(lines 19 27) no Hoare annotation was computed. [2023-11-19 08:00:24,616 INFO L899 garLoopResultBuilder]: For program point fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2023-11-19 08:00:24,616 INFO L899 garLoopResultBuilder]: For program point L22(lines 22 26) no Hoare annotation was computed. [2023-11-19 08:00:24,616 INFO L899 garLoopResultBuilder]: For program point L20(lines 20 26) no Hoare annotation was computed. [2023-11-19 08:00:24,616 INFO L899 garLoopResultBuilder]: For program point fibo2FINAL(lines 19 27) no Hoare annotation was computed. [2023-11-19 08:00:24,616 INFO L899 garLoopResultBuilder]: For program point fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2023-11-19 08:00:24,616 INFO L899 garLoopResultBuilder]: For program point fibo1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2023-11-19 08:00:24,616 INFO L899 garLoopResultBuilder]: For program point fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2023-11-19 08:00:24,617 INFO L899 garLoopResultBuilder]: For program point L15(line 15) no Hoare annotation was computed. [2023-11-19 08:00:24,617 INFO L899 garLoopResultBuilder]: For program point L15-1(line 15) no Hoare annotation was computed. [2023-11-19 08:00:24,617 INFO L895 garLoopResultBuilder]: At program point L15-2(line 15) the Hoare annotation is: (and (or (< |fibo1_#in~n| 4) (< 4 |fibo1_#in~n|) (= fibo1_~n 4)) (or (and (= fibo1_~n 2) (= fibo1_~n |fibo1_#in~n|)) (< 2 |fibo1_#in~n|))) [2023-11-19 08:00:24,617 INFO L899 garLoopResultBuilder]: For program point L15-3(line 15) no Hoare annotation was computed. [2023-11-19 08:00:24,617 INFO L899 garLoopResultBuilder]: For program point L15-4(line 15) no Hoare annotation was computed. [2023-11-19 08:00:24,617 INFO L899 garLoopResultBuilder]: For program point fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2023-11-19 08:00:24,617 INFO L899 garLoopResultBuilder]: For program point fibo1FINAL(lines 9 17) no Hoare annotation was computed. [2023-11-19 08:00:24,620 INFO L899 garLoopResultBuilder]: For program point L15-5(line 15) no Hoare annotation was computed. [2023-11-19 08:00:24,620 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 9 17) the Hoare annotation is: true [2023-11-19 08:00:24,621 INFO L895 garLoopResultBuilder]: At program point L15-6(line 15) the Hoare annotation is: (and (or (< |fibo1_#in~n| 4) (< 4 |fibo1_#in~n|) (and (= 2 |fibo1_#t~ret4|) (= fibo1_~n 4))) (or (< 2 |fibo1_#in~n|) (and (= 2 |fibo1_#in~n|) (= |fibo1_#t~ret4| 1) (= fibo1_~n 2)))) [2023-11-19 08:00:24,621 INFO L899 garLoopResultBuilder]: For program point L15-7(line 15) no Hoare annotation was computed. [2023-11-19 08:00:24,621 INFO L899 garLoopResultBuilder]: For program point L15-8(line 15) no Hoare annotation was computed. [2023-11-19 08:00:24,622 INFO L899 garLoopResultBuilder]: For program point L15-9(line 15) no Hoare annotation was computed. [2023-11-19 08:00:24,622 INFO L899 garLoopResultBuilder]: For program point fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2023-11-19 08:00:24,622 INFO L899 garLoopResultBuilder]: For program point fibo1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2023-11-19 08:00:24,622 INFO L899 garLoopResultBuilder]: For program point fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2023-11-19 08:00:24,622 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 16) no Hoare annotation was computed. [2023-11-19 08:00:24,623 INFO L899 garLoopResultBuilder]: For program point L10(lines 10 16) no Hoare annotation was computed. [2023-11-19 08:00:24,623 INFO L899 garLoopResultBuilder]: For program point fibo1EXIT(lines 9 17) no Hoare annotation was computed. [2023-11-19 08:00:24,626 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 08:00:24,628 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 08:00:24,636 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 08:00:24 BoogieIcfgContainer [2023-11-19 08:00:24,636 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 08:00:24,637 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 08:00:24,637 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 08:00:24,637 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 08:00:24,638 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:00:07" (3/4) ... [2023-11-19 08:00:24,640 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 08:00:24,644 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo2 [2023-11-19 08:00:24,644 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo1 [2023-11-19 08:00:24,651 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2023-11-19 08:00:24,652 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-19 08:00:24,652 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 08:00:24,652 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 08:00:24,741 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 08:00:24,742 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/witness.yml [2023-11-19 08:00:24,742 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 08:00:24,742 INFO L158 Benchmark]: Toolchain (without parser) took 17961.68ms. Allocated memory was 190.8MB in the beginning and 230.7MB in the end (delta: 39.8MB). Free memory was 150.8MB in the beginning and 66.9MB in the end (delta: 83.9MB). Peak memory consumption was 126.0MB. Max. memory is 16.1GB. [2023-11-19 08:00:24,743 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 138.4MB. Free memory is still 82.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 08:00:24,743 INFO L158 Benchmark]: CACSL2BoogieTranslator took 268.23ms. Allocated memory is still 190.8MB. Free memory was 150.8MB in the beginning and 140.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-19 08:00:24,744 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.82ms. Allocated memory is still 190.8MB. Free memory was 140.4MB in the beginning and 138.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 08:00:24,744 INFO L158 Benchmark]: Boogie Preprocessor took 32.27ms. Allocated memory is still 190.8MB. Free memory was 138.9MB in the beginning and 138.3MB in the end (delta: 615.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 08:00:24,745 INFO L158 Benchmark]: RCFGBuilder took 390.30ms. Allocated memory is still 190.8MB. Free memory was 138.3MB in the beginning and 126.3MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 08:00:24,745 INFO L158 Benchmark]: TraceAbstraction took 17123.24ms. Allocated memory was 190.8MB in the beginning and 230.7MB in the end (delta: 39.8MB). Free memory was 125.7MB in the beginning and 72.2MB in the end (delta: 53.5MB). Peak memory consumption was 105.1MB. Max. memory is 16.1GB. [2023-11-19 08:00:24,745 INFO L158 Benchmark]: Witness Printer took 104.81ms. Allocated memory is still 230.7MB. Free memory was 72.2MB in the beginning and 66.9MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-19 08:00:24,748 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34ms. Allocated memory is still 138.4MB. Free memory is still 82.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 268.23ms. Allocated memory is still 190.8MB. Free memory was 150.8MB in the beginning and 140.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 33.82ms. Allocated memory is still 190.8MB. Free memory was 140.4MB in the beginning and 138.9MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.27ms. Allocated memory is still 190.8MB. Free memory was 138.9MB in the beginning and 138.3MB in the end (delta: 615.0kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 390.30ms. Allocated memory is still 190.8MB. Free memory was 138.3MB in the beginning and 126.3MB in the end (delta: 12.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 17123.24ms. Allocated memory was 190.8MB in the beginning and 230.7MB in the end (delta: 39.8MB). Free memory was 125.7MB in the beginning and 72.2MB in the end (delta: 53.5MB). Peak memory consumption was 105.1MB. Max. memory is 16.1GB. * Witness Printer took 104.81ms. Allocated memory is still 230.7MB. Free memory was 72.2MB in the beginning and 66.9MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 53 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 17.0s, OverallIterations: 22, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 4.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 954 SdHoareTripleChecker+Valid, 2.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 925 mSDsluCounter, 4570 SdHoareTripleChecker+Invalid, 2.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3810 mSDsCounter, 245 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4074 IncrementalHoareTripleChecker+Invalid, 4319 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 245 mSolverCounterUnsat, 760 mSDtfsCounter, 4074 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1434 GetRequests, 1085 SyntacticMatches, 44 SemanticMatches, 305 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1682 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=145occurred in iteration=14, InterpolantAutomatonStates: 229, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 22 MinimizatonAttempts, 234 StatesRemovedByMinimization, 20 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 259 PreInvPairs, 343 NumberOfFragments, 95 HoareAnnotationTreeSize, 259 FomulaSimplifications, 11528 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 7 FomulaSimplificationsInter, 987 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 7.2s InterpolantComputationTime, 1470 NumberOfCodeBlocks, 1470 NumberOfCodeBlocksAsserted, 36 NumberOfCheckSat, 1896 ConstructedInterpolants, 0 QuantifiedInterpolants, 4124 SizeOfPredicates, 20 NumberOfNonLiveVariables, 1359 ConjunctsInSsa, 113 ConjunctsInUnsatCore, 42 InterpolantComputations, 14 PerfectInterpolantSequences, 1010/1305 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-19 08:00:24,779 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a832384c-dfb8-49bc-9c45-d51cf86070e4/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE