./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_6-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e7bb482b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_6-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 31de98bafea1eb3233157f378400eba30060b6561e9e0a6257ecfebe8e53877a --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 23:05:09,265 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 23:05:09,388 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 23:05:09,394 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 23:05:09,395 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 23:05:09,421 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 23:05:09,422 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 23:05:09,423 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 23:05:09,424 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 23:05:09,424 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 23:05:09,425 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 23:05:09,426 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 23:05:09,426 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 23:05:09,427 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 23:05:09,428 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 23:05:09,428 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 23:05:09,429 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 23:05:09,430 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 23:05:09,430 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 23:05:09,431 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 23:05:09,432 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 23:05:09,433 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 23:05:09,433 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 23:05:09,434 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 23:05:09,434 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 23:05:09,435 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 23:05:09,435 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 23:05:09,436 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 23:05:09,437 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 23:05:09,437 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 23:05:09,438 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:05:09,438 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 23:05:09,439 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 23:05:09,439 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 23:05:09,440 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 23:05:09,440 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 23:05:09,441 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 23:05:09,441 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 23:05:09,441 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 23:05:09,442 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 23:05:09,442 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 23:05:09,443 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_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31de98bafea1eb3233157f378400eba30060b6561e9e0a6257ecfebe8e53877a [2023-11-06 23:05:09,770 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 23:05:09,811 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 23:05:09,814 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 23:05:09,816 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 23:05:09,817 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 23:05:09,818 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/recursive-simple/fibo_2calls_6-2.c [2023-11-06 23:05:13,114 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 23:05:13,353 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 23:05:13,353 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/sv-benchmarks/c/recursive-simple/fibo_2calls_6-2.c [2023-11-06 23:05:13,363 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/data/3bebbc96a/b7de421e6d724e8cb36262719e0ab676/FLAG605919e7f [2023-11-06 23:05:13,381 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/data/3bebbc96a/b7de421e6d724e8cb36262719e0ab676 [2023-11-06 23:05:13,384 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 23:05:13,386 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 23:05:13,388 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 23:05:13,388 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 23:05:13,403 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 23:05:13,404 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:05:13" (1/1) ... [2023-11-06 23:05:13,405 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b836423 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:13, skipping insertion in model container [2023-11-06 23:05:13,406 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 11:05:13" (1/1) ... [2023-11-06 23:05:13,426 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 23:05:13,599 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:05:13,612 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 23:05:13,632 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 23:05:13,648 INFO L206 MainTranslator]: Completed translation [2023-11-06 23:05:13,649 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:13 WrapperNode [2023-11-06 23:05:13,649 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 23:05:13,651 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 23:05:13,651 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 23:05:13,651 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 23:05:13,660 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:13" (1/1) ... [2023-11-06 23:05:13,667 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:13" (1/1) ... [2023-11-06 23:05:13,687 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 21 [2023-11-06 23:05:13,687 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 23:05:13,688 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 23:05:13,688 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 23:05:13,689 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 23:05:13,698 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:13" (1/1) ... [2023-11-06 23:05:13,699 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:13" (1/1) ... [2023-11-06 23:05:13,700 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:13" (1/1) ... [2023-11-06 23:05:13,700 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:13" (1/1) ... [2023-11-06 23:05:13,704 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:13" (1/1) ... [2023-11-06 23:05:13,706 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:13" (1/1) ... [2023-11-06 23:05:13,708 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:13" (1/1) ... [2023-11-06 23:05:13,709 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:13" (1/1) ... [2023-11-06 23:05:13,711 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 23:05:13,712 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 23:05:13,712 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 23:05:13,712 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 23:05:13,713 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:13" (1/1) ... [2023-11-06 23:05:13,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 23:05:13,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:13,750 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 23:05:13,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 23:05:13,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 23:05:13,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 23:05:13,814 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2023-11-06 23:05:13,814 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2023-11-06 23:05:13,814 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2023-11-06 23:05:13,815 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2023-11-06 23:05:13,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 23:05:13,815 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 23:05:13,890 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 23:05:13,892 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 23:05:14,112 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 23:05:14,120 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 23:05:14,120 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 23:05:14,123 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:05:14 BoogieIcfgContainer [2023-11-06 23:05:14,123 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 23:05:14,126 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 23:05:14,127 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 23:05:14,130 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 23:05:14,131 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 11:05:13" (1/3) ... [2023-11-06 23:05:14,132 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23f86dae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:05:14, skipping insertion in model container [2023-11-06 23:05:14,132 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 11:05:13" (2/3) ... [2023-11-06 23:05:14,133 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23f86dae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 11:05:14, skipping insertion in model container [2023-11-06 23:05:14,133 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:05:14" (3/3) ... [2023-11-06 23:05:14,134 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_6-2.c [2023-11-06 23:05:14,157 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 23:05:14,157 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-06 23:05:14,220 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 23:05:14,228 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=LoopsAndPotentialCycles, 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;@451d2549, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 23:05:14,228 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-11-06 23:05:14,233 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) [2023-11-06 23:05:14,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-06 23:05:14,241 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:05:14,242 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:14,242 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-06 23:05:14,248 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:14,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1867028009, now seen corresponding path program 1 times [2023-11-06 23:05:14,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:14,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171752158] [2023-11-06 23:05:14,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:14,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:14,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:14,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:05:14,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:14,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171752158] [2023-11-06 23:05:14,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171752158] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:14,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:14,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:05:14,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083636830] [2023-11-06 23:05:14,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:14,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:05:14,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:14,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:05:14,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:05:14,601 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) [2023-11-06 23:05:14,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:05:14,692 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2023-11-06 23:05:14,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:05:14,698 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 [2023-11-06 23:05:14,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:05:14,708 INFO L225 Difference]: With dead ends: 59 [2023-11-06 23:05:14,709 INFO L226 Difference]: Without dead ends: 45 [2023-11-06 23:05:14,713 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 [2023-11-06 23:05:14,720 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, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 23:05:14,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 92 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 23:05:14,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-11-06 23:05:14,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2023-11-06 23:05:14,775 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) [2023-11-06 23:05:14,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2023-11-06 23:05:14,781 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 7 [2023-11-06 23:05:14,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:05:14,781 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2023-11-06 23:05:14,782 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) [2023-11-06 23:05:14,782 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2023-11-06 23:05:14,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-06 23:05:14,783 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:05:14,783 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:14,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 23:05:14,784 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-06 23:05:14,785 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:14,785 INFO L85 PathProgramCache]: Analyzing trace with hash 2043293518, now seen corresponding path program 1 times [2023-11-06 23:05:14,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:14,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177885076] [2023-11-06 23:05:14,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:14,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:14,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:14,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:05:14,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:14,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177885076] [2023-11-06 23:05:14,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177885076] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:14,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:14,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:05:14,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426718247] [2023-11-06 23:05:14,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:14,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:05:14,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:14,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:05:14,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:05:14,888 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) [2023-11-06 23:05:14,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:05:14,998 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2023-11-06 23:05:14,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:05:15,000 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 [2023-11-06 23:05:15,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:05:15,002 INFO L225 Difference]: With dead ends: 64 [2023-11-06 23:05:15,005 INFO L226 Difference]: Without dead ends: 60 [2023-11-06 23:05:15,006 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 [2023-11-06 23:05:15,009 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 29 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2023-11-06 23:05:15,011 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] [2023-11-06 23:05:15,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-11-06 23:05:15,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 56. [2023-11-06 23:05:15,028 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) [2023-11-06 23:05:15,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2023-11-06 23:05:15,033 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 8 [2023-11-06 23:05:15,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:05:15,034 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2023-11-06 23:05:15,034 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) [2023-11-06 23:05:15,035 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2023-11-06 23:05:15,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-06 23:05:15,036 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:05:15,036 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:15,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 23:05:15,037 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-06 23:05:15,038 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:15,038 INFO L85 PathProgramCache]: Analyzing trace with hash -749725533, now seen corresponding path program 1 times [2023-11-06 23:05:15,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:15,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284098396] [2023-11-06 23:05:15,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:15,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:15,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:15,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:05:15,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:15,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284098396] [2023-11-06 23:05:15,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284098396] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:15,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:15,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 23:05:15,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403720717] [2023-11-06 23:05:15,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:15,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 23:05:15,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:15,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 23:05:15,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 23:05:15,134 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) [2023-11-06 23:05:15,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:05:15,162 INFO L93 Difference]: Finished difference Result 58 states and 70 transitions. [2023-11-06 23:05:15,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 23:05:15,163 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 [2023-11-06 23:05:15,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:05:15,164 INFO L225 Difference]: With dead ends: 58 [2023-11-06 23:05:15,165 INFO L226 Difference]: Without dead ends: 56 [2023-11-06 23:05:15,165 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 [2023-11-06 23:05:15,167 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 [2023-11-06 23:05:15,168 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] [2023-11-06 23:05:15,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-11-06 23:05:15,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2023-11-06 23:05:15,180 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) [2023-11-06 23:05:15,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2023-11-06 23:05:15,182 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 13 [2023-11-06 23:05:15,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:05:15,184 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2023-11-06 23:05:15,184 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) [2023-11-06 23:05:15,184 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2023-11-06 23:05:15,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-06 23:05:15,185 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:05:15,185 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:15,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 23:05:15,186 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-06 23:05:15,186 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:15,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1766654982, now seen corresponding path program 1 times [2023-11-06 23:05:15,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:15,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439495489] [2023-11-06 23:05:15,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:15,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:15,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:15,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:05:15,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:15,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439495489] [2023-11-06 23:05:15,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439495489] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:15,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:15,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 23:05:15,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518161706] [2023-11-06 23:05:15,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:15,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:05:15,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:15,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:05:15,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 23:05:15,382 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) [2023-11-06 23:05:15,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:05:15,511 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2023-11-06 23:05:15,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 23:05:15,512 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 [2023-11-06 23:05:15,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:05:15,513 INFO L225 Difference]: With dead ends: 54 [2023-11-06 23:05:15,514 INFO L226 Difference]: Without dead ends: 50 [2023-11-06 23:05:15,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-06 23:05:15,516 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 [2023-11-06 23:05:15,517 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] [2023-11-06 23:05:15,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-11-06 23:05:15,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-11-06 23:05:15,527 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) [2023-11-06 23:05:15,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2023-11-06 23:05:15,529 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 14 [2023-11-06 23:05:15,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:05:15,530 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2023-11-06 23:05:15,530 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) [2023-11-06 23:05:15,531 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2023-11-06 23:05:15,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-06 23:05:15,532 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:05:15,532 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] [2023-11-06 23:05:15,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 23:05:15,533 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-06 23:05:15,534 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:15,534 INFO L85 PathProgramCache]: Analyzing trace with hash 2097999453, now seen corresponding path program 1 times [2023-11-06 23:05:15,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:15,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548992033] [2023-11-06 23:05:15,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:15,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:15,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:15,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 23:05:15,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:15,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-06 23:05:15,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:15,761 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-06 23:05:15,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:15,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548992033] [2023-11-06 23:05:15,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548992033] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:15,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:15,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:05:15,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856431855] [2023-11-06 23:05:15,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:15,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:05:15,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:15,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:05:15,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:05:15,766 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) [2023-11-06 23:05:15,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:05:15,812 INFO L93 Difference]: Finished difference Result 76 states and 94 transitions. [2023-11-06 23:05:15,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:05:15,813 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 [2023-11-06 23:05:15,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:05:15,815 INFO L225 Difference]: With dead ends: 76 [2023-11-06 23:05:15,816 INFO L226 Difference]: Without dead ends: 71 [2023-11-06 23:05:15,816 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 [2023-11-06 23:05:15,818 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 [2023-11-06 23:05:15,819 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] [2023-11-06 23:05:15,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-11-06 23:05:15,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 63. [2023-11-06 23:05:15,833 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) [2023-11-06 23:05:15,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 78 transitions. [2023-11-06 23:05:15,836 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 78 transitions. Word has length 23 [2023-11-06 23:05:15,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:05:15,836 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 78 transitions. [2023-11-06 23:05:15,837 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) [2023-11-06 23:05:15,837 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 78 transitions. [2023-11-06 23:05:15,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-06 23:05:15,839 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:05:15,839 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] [2023-11-06 23:05:15,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 23:05:15,840 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-06 23:05:15,840 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:15,841 INFO L85 PathProgramCache]: Analyzing trace with hash 624421350, now seen corresponding path program 1 times [2023-11-06 23:05:15,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:15,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208284230] [2023-11-06 23:05:15,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:15,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:15,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:15,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 23:05:15,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:15,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-06 23:05:15,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:15,978 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-06 23:05:15,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:15,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208284230] [2023-11-06 23:05:15,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208284230] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:05:15,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44383740] [2023-11-06 23:05:15,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:15,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:15,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:15,985 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:05:16,000 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 23:05:16,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:16,069 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 23:05:16,075 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:05:16,215 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:05:16,215 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:05:16,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44383740] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:16,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:05:16,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2023-11-06 23:05:16,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537702875] [2023-11-06 23:05:16,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:16,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 23:05:16,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:16,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 23:05:16,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-06 23:05:16,220 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) [2023-11-06 23:05:16,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:05:16,412 INFO L93 Difference]: Finished difference Result 111 states and 134 transitions. [2023-11-06 23:05:16,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 23:05:16,413 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 [2023-11-06 23:05:16,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:05:16,415 INFO L225 Difference]: With dead ends: 111 [2023-11-06 23:05:16,416 INFO L226 Difference]: Without dead ends: 61 [2023-11-06 23:05:16,424 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 [2023-11-06 23:05:16,430 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 [2023-11-06 23:05:16,434 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] [2023-11-06 23:05:16,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-11-06 23:05:16,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2023-11-06 23:05:16,447 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) [2023-11-06 23:05:16,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 71 transitions. [2023-11-06 23:05:16,449 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 71 transitions. Word has length 24 [2023-11-06 23:05:16,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:05:16,450 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 71 transitions. [2023-11-06 23:05:16,450 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) [2023-11-06 23:05:16,450 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 71 transitions. [2023-11-06 23:05:16,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-06 23:05:16,453 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:05:16,453 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] [2023-11-06 23:05:16,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 23:05:16,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-06 23:05:16,661 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-06 23:05:16,661 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:16,662 INFO L85 PathProgramCache]: Analyzing trace with hash 120521327, now seen corresponding path program 1 times [2023-11-06 23:05:16,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:16,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972803261] [2023-11-06 23:05:16,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:16,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:16,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:16,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 23:05:16,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:16,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 23:05:16,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:16,783 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 23:05:16,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:16,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972803261] [2023-11-06 23:05:16,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972803261] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:16,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:16,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:05:16,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22197392] [2023-11-06 23:05:16,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:16,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:05:16,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:16,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:05:16,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:05:16,786 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) [2023-11-06 23:05:16,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:05:16,840 INFO L93 Difference]: Finished difference Result 85 states and 108 transitions. [2023-11-06 23:05:16,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:05:16,841 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 [2023-11-06 23:05:16,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:05:16,843 INFO L225 Difference]: With dead ends: 85 [2023-11-06 23:05:16,843 INFO L226 Difference]: Without dead ends: 80 [2023-11-06 23:05:16,843 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 [2023-11-06 23:05:16,845 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, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:05:16,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 151 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:05:16,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-11-06 23:05:16,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 69. [2023-11-06 23:05:16,858 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) [2023-11-06 23:05:16,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 89 transitions. [2023-11-06 23:05:16,860 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 89 transitions. Word has length 25 [2023-11-06 23:05:16,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:05:16,861 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 89 transitions. [2023-11-06 23:05:16,861 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) [2023-11-06 23:05:16,861 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 89 transitions. [2023-11-06 23:05:16,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-06 23:05:16,863 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:05:16,863 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] [2023-11-06 23:05:16,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 23:05:16,864 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-06 23:05:16,864 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:16,864 INFO L85 PathProgramCache]: Analyzing trace with hash -473230649, now seen corresponding path program 1 times [2023-11-06 23:05:16,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:16,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488292059] [2023-11-06 23:05:16,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:16,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:16,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:16,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 23:05:16,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:16,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-06 23:05:16,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:16,973 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 23:05:16,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:16,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488292059] [2023-11-06 23:05:16,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488292059] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:16,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:16,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:05:16,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971709353] [2023-11-06 23:05:16,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:16,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:05:16,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:16,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:05:16,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:05:16,976 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) [2023-11-06 23:05:17,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:05:17,022 INFO L93 Difference]: Finished difference Result 85 states and 108 transitions. [2023-11-06 23:05:17,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:05:17,023 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 [2023-11-06 23:05:17,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:05:17,024 INFO L225 Difference]: With dead ends: 85 [2023-11-06 23:05:17,025 INFO L226 Difference]: Without dead ends: 83 [2023-11-06 23:05:17,025 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 [2023-11-06 23:05:17,026 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 [2023-11-06 23:05:17,027 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] [2023-11-06 23:05:17,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-11-06 23:05:17,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 78. [2023-11-06 23:05:17,040 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) [2023-11-06 23:05:17,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 101 transitions. [2023-11-06 23:05:17,042 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 101 transitions. Word has length 29 [2023-11-06 23:05:17,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:05:17,043 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 101 transitions. [2023-11-06 23:05:17,043 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) [2023-11-06 23:05:17,043 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 101 transitions. [2023-11-06 23:05:17,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-06 23:05:17,045 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:05:17,045 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] [2023-11-06 23:05:17,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 23:05:17,046 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-06 23:05:17,046 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:17,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1773385638, now seen corresponding path program 1 times [2023-11-06 23:05:17,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:17,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967573354] [2023-11-06 23:05:17,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:17,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:17,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:17,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 23:05:17,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:17,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-06 23:05:17,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:17,154 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-06 23:05:17,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:17,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967573354] [2023-11-06 23:05:17,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967573354] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:05:17,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600086907] [2023-11-06 23:05:17,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:17,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:17,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:17,157 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:05:17,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 23:05:17,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:17,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 23:05:17,217 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:05:17,329 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:05:17,330 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:05:17,514 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 23:05:17,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600086907] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:05:17,515 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:05:17,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2023-11-06 23:05:17,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901472622] [2023-11-06 23:05:17,515 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:05:17,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-06 23:05:17,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:17,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-06 23:05:17,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2023-11-06 23:05:17,518 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) [2023-11-06 23:05:18,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:05:18,137 INFO L93 Difference]: Finished difference Result 206 states and 275 transitions. [2023-11-06 23:05:18,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-06 23:05:18,139 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 [2023-11-06 23:05:18,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:05:18,143 INFO L225 Difference]: With dead ends: 206 [2023-11-06 23:05:18,143 INFO L226 Difference]: Without dead ends: 137 [2023-11-06 23:05:18,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 54 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2023-11-06 23:05:18,152 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 133 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 23:05:18,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 666 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 613 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 23:05:18,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-11-06 23:05:18,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 121. [2023-11-06 23:05:18,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 92 states have (on average 1.1630434782608696) internal successors, (107), 97 states have internal predecessors, (107), 16 states have call successors, (16), 6 states have call predecessors, (16), 9 states have return successors, (34), 17 states have call predecessors, (34), 15 states have call successors, (34) [2023-11-06 23:05:18,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 157 transitions. [2023-11-06 23:05:18,204 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 157 transitions. Word has length 30 [2023-11-06 23:05:18,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:05:18,204 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 157 transitions. [2023-11-06 23:05:18,205 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) [2023-11-06 23:05:18,205 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 157 transitions. [2023-11-06 23:05:18,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-06 23:05:18,211 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:05:18,212 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] [2023-11-06 23:05:18,228 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 23:05:18,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-06 23:05:18,418 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-06 23:05:18,419 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:18,419 INFO L85 PathProgramCache]: Analyzing trace with hash -463506674, now seen corresponding path program 2 times [2023-11-06 23:05:18,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:18,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130984972] [2023-11-06 23:05:18,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:18,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:18,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:18,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-06 23:05:18,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:18,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 23:05:18,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:18,554 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-06 23:05:18,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:18,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130984972] [2023-11-06 23:05:18,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130984972] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:05:18,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1191331109] [2023-11-06 23:05:18,555 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 23:05:18,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:18,556 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:18,557 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:05:18,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 23:05:18,621 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 23:05:18,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:05:18,623 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:05:18,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:05:18,691 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-06 23:05:18,691 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:05:18,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1191331109] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:18,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:05:18,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2023-11-06 23:05:18,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889023452] [2023-11-06 23:05:18,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:18,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:05:18,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:18,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:05:18,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-06 23:05:18,694 INFO L87 Difference]: Start difference. First operand 121 states and 157 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) [2023-11-06 23:05:18,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:05:18,736 INFO L93 Difference]: Finished difference Result 131 states and 169 transitions. [2023-11-06 23:05:18,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:05:18,737 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 [2023-11-06 23:05:18,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:05:18,740 INFO L225 Difference]: With dead ends: 131 [2023-11-06 23:05:18,740 INFO L226 Difference]: Without dead ends: 130 [2023-11-06 23:05:18,740 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 [2023-11-06 23:05:18,741 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 [2023-11-06 23:05:18,742 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] [2023-11-06 23:05:18,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-11-06 23:05:18,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 125. [2023-11-06 23:05:18,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 96 states have (on average 1.15625) internal successors, (111), 99 states have internal predecessors, (111), 16 states have call successors, (16), 6 states have call predecessors, (16), 9 states have return successors, (34), 19 states have call predecessors, (34), 15 states have call successors, (34) [2023-11-06 23:05:18,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 161 transitions. [2023-11-06 23:05:18,759 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 161 transitions. Word has length 42 [2023-11-06 23:05:18,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:05:18,760 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 161 transitions. [2023-11-06 23:05:18,760 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) [2023-11-06 23:05:18,760 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 161 transitions. [2023-11-06 23:05:18,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-06 23:05:18,762 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:05:18,762 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] [2023-11-06 23:05:18,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 23:05:18,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-06 23:05:18,969 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-06 23:05:18,970 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:18,970 INFO L85 PathProgramCache]: Analyzing trace with hash -1483804933, now seen corresponding path program 1 times [2023-11-06 23:05:18,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:18,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727335532] [2023-11-06 23:05:18,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:18,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:18,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:19,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-06 23:05:19,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:19,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 23:05:19,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:19,172 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-06 23:05:19,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:19,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727335532] [2023-11-06 23:05:19,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727335532] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:05:19,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [475410744] [2023-11-06 23:05:19,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:19,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:19,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:19,175 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:05:19,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 23:05:19,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:19,238 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 23:05:19,242 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:05:19,467 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:05:19,468 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:05:19,697 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 23:05:19,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [475410744] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:05:19,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:05:19,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 13, 13] total 18 [2023-11-06 23:05:19,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601197214] [2023-11-06 23:05:19,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:05:19,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-06 23:05:19,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:19,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 23:05:19,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2023-11-06 23:05:19,702 INFO L87 Difference]: Start difference. First operand 125 states and 161 transitions. Second operand has 18 states, 17 states have (on average 3.588235294117647) internal successors, (61), 14 states have internal predecessors, (61), 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) [2023-11-06 23:05:20,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:05:20,193 INFO L93 Difference]: Finished difference Result 301 states and 388 transitions. [2023-11-06 23:05:20,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-06 23:05:20,194 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.588235294117647) internal successors, (61), 14 states have internal predecessors, (61), 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 [2023-11-06 23:05:20,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:05:20,197 INFO L225 Difference]: With dead ends: 301 [2023-11-06 23:05:20,197 INFO L226 Difference]: Without dead ends: 191 [2023-11-06 23:05:20,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 72 SyntacticMatches, 10 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2023-11-06 23:05:20,199 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 124 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 23:05:20,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 606 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 23:05:20,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2023-11-06 23:05:20,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 168. [2023-11-06 23:05:20,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 131 states have (on average 1.1450381679389312) internal successors, (150), 132 states have internal predecessors, (150), 22 states have call successors, (22), 8 states have call predecessors, (22), 11 states have return successors, (48), 27 states have call predecessors, (48), 21 states have call successors, (48) [2023-11-06 23:05:20,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 220 transitions. [2023-11-06 23:05:20,222 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 220 transitions. Word has length 43 [2023-11-06 23:05:20,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:05:20,222 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 220 transitions. [2023-11-06 23:05:20,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.588235294117647) internal successors, (61), 14 states have internal predecessors, (61), 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) [2023-11-06 23:05:20,223 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 220 transitions. [2023-11-06 23:05:20,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-06 23:05:20,224 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:05:20,224 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:20,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 23:05:20,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-06 23:05:20,431 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-06 23:05:20,432 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:20,432 INFO L85 PathProgramCache]: Analyzing trace with hash 2086948818, now seen corresponding path program 1 times [2023-11-06 23:05:20,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:20,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885637363] [2023-11-06 23:05:20,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:20,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:20,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:20,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 23:05:20,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:20,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-06 23:05:20,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:20,550 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-06 23:05:20,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:20,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885637363] [2023-11-06 23:05:20,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885637363] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:05:20,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321228382] [2023-11-06 23:05:20,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:20,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:20,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:20,553 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:05:20,560 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 23:05:20,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:20,613 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 23:05:20,616 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:05:20,870 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 10 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 23:05:20,870 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:05:21,114 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 23:05:21,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321228382] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:05:21,115 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:05:21,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 15, 15] total 20 [2023-11-06 23:05:21,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495200180] [2023-11-06 23:05:21,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:05:21,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-06 23:05:21,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:21,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-06 23:05:21,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2023-11-06 23:05:21,122 INFO L87 Difference]: Start difference. First operand 168 states and 220 transitions. Second operand has 20 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 15 states have internal predecessors, (63), 9 states have call successors, (12), 7 states have call predecessors, (12), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-06 23:05:21,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:05:21,718 INFO L93 Difference]: Finished difference Result 358 states and 468 transitions. [2023-11-06 23:05:21,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-06 23:05:21,718 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 15 states have internal predecessors, (63), 9 states have call successors, (12), 7 states have call predecessors, (12), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 48 [2023-11-06 23:05:21,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:05:21,721 INFO L225 Difference]: With dead ends: 358 [2023-11-06 23:05:21,721 INFO L226 Difference]: Without dead ends: 211 [2023-11-06 23:05:21,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 79 SyntacticMatches, 12 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=97, Invalid=605, Unknown=0, NotChecked=0, Total=702 [2023-11-06 23:05:21,724 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 151 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 624 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 23:05:21,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 681 Invalid, 658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 624 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 23:05:21,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2023-11-06 23:05:21,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 190. [2023-11-06 23:05:21,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 149 states have (on average 1.1409395973154361) internal successors, (170), 149 states have internal predecessors, (170), 25 states have call successors, (25), 9 states have call predecessors, (25), 12 states have return successors, (55), 31 states have call predecessors, (55), 24 states have call successors, (55) [2023-11-06 23:05:21,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 250 transitions. [2023-11-06 23:05:21,744 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 250 transitions. Word has length 48 [2023-11-06 23:05:21,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:05:21,745 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 250 transitions. [2023-11-06 23:05:21,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 15 states have internal predecessors, (63), 9 states have call successors, (12), 7 states have call predecessors, (12), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-06 23:05:21,745 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 250 transitions. [2023-11-06 23:05:21,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-06 23:05:21,746 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:05:21,746 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:21,758 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 23:05:21,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:21,953 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-06 23:05:21,954 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:21,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1881704096, now seen corresponding path program 2 times [2023-11-06 23:05:21,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:21,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005802140] [2023-11-06 23:05:21,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:21,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:21,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:22,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 23:05:22,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:22,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-06 23:05:22,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:22,069 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-06 23:05:22,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:22,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005802140] [2023-11-06 23:05:22,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005802140] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:05:22,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1337827773] [2023-11-06 23:05:22,070 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 23:05:22,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:22,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:22,071 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:05:22,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 23:05:22,138 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 23:05:22,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:05:22,139 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 23:05:22,141 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:05:22,192 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-06 23:05:22,192 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:05:22,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1337827773] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:22,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:05:22,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2023-11-06 23:05:22,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799541981] [2023-11-06 23:05:22,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:22,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:05:22,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:22,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:05:22,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-06 23:05:22,195 INFO L87 Difference]: Start difference. First operand 190 states and 250 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) [2023-11-06 23:05:22,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:05:22,243 INFO L93 Difference]: Finished difference Result 204 states and 270 transitions. [2023-11-06 23:05:22,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:05:22,244 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 48 [2023-11-06 23:05:22,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:05:22,250 INFO L225 Difference]: With dead ends: 204 [2023-11-06 23:05:22,250 INFO L226 Difference]: Without dead ends: 203 [2023-11-06 23:05:22,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-06 23:05:22,252 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 [2023-11-06 23:05:22,253 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] [2023-11-06 23:05:22,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2023-11-06 23:05:22,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 198. [2023-11-06 23:05:22,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 157 states have (on average 1.1337579617834395) internal successors, (178), 153 states have internal predecessors, (178), 25 states have call successors, (25), 9 states have call predecessors, (25), 12 states have return successors, (55), 35 states have call predecessors, (55), 24 states have call successors, (55) [2023-11-06 23:05:22,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 258 transitions. [2023-11-06 23:05:22,280 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 258 transitions. Word has length 48 [2023-11-06 23:05:22,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:05:22,280 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 258 transitions. [2023-11-06 23:05:22,281 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) [2023-11-06 23:05:22,281 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 258 transitions. [2023-11-06 23:05:22,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-06 23:05:22,282 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:05:22,282 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:22,292 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-06 23:05:22,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-06 23:05:22,488 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-06 23:05:22,489 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:22,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1796715069, now seen corresponding path program 1 times [2023-11-06 23:05:22,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:22,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026700333] [2023-11-06 23:05:22,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:22,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:22,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:22,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 23:05:22,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:22,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-06 23:05:22,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:22,597 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-06 23:05:22,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:22,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026700333] [2023-11-06 23:05:22,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026700333] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:05:22,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345572049] [2023-11-06 23:05:22,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:22,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:22,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:22,600 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:05:22,628 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 23:05:22,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:22,664 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 23:05:22,667 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:05:22,735 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-06 23:05:22,735 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 23:05:22,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [345572049] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:22,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 23:05:22,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2023-11-06 23:05:22,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220305745] [2023-11-06 23:05:22,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:22,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 23:05:22,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:22,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 23:05:22,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-06 23:05:22,737 INFO L87 Difference]: Start difference. First operand 198 states and 258 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) [2023-11-06 23:05:22,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:05:22,784 INFO L93 Difference]: Finished difference Result 216 states and 279 transitions. [2023-11-06 23:05:22,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 23:05:22,785 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 49 [2023-11-06 23:05:22,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:05:22,788 INFO L225 Difference]: With dead ends: 216 [2023-11-06 23:05:22,788 INFO L226 Difference]: Without dead ends: 215 [2023-11-06 23:05:22,788 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-06 23:05:22,789 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 4 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:05:22,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 184 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:05:22,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2023-11-06 23:05:22,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 194. [2023-11-06 23:05:22,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 154 states have (on average 1.1363636363636365) internal successors, (175), 150 states have internal predecessors, (175), 24 states have call successors, (24), 9 states have call predecessors, (24), 12 states have return successors, (52), 34 states have call predecessors, (52), 23 states have call successors, (52) [2023-11-06 23:05:22,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 251 transitions. [2023-11-06 23:05:22,805 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 251 transitions. Word has length 49 [2023-11-06 23:05:22,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:05:22,806 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 251 transitions. [2023-11-06 23:05:22,806 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) [2023-11-06 23:05:22,806 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 251 transitions. [2023-11-06 23:05:22,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-06 23:05:22,808 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:05:22,808 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:22,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 23:05:23,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-06 23:05:23,015 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-06 23:05:23,015 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:23,016 INFO L85 PathProgramCache]: Analyzing trace with hash 282184236, now seen corresponding path program 1 times [2023-11-06 23:05:23,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:23,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725388339] [2023-11-06 23:05:23,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:23,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:23,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:23,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-06 23:05:23,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:23,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 23:05:23,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:23,127 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-11-06 23:05:23,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:23,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725388339] [2023-11-06 23:05:23,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725388339] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:23,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:23,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:05:23,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336938881] [2023-11-06 23:05:23,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:23,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:05:23,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:23,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:05:23,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:05:23,129 INFO L87 Difference]: Start difference. First operand 194 states and 251 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 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) [2023-11-06 23:05:23,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:05:23,178 INFO L93 Difference]: Finished difference Result 212 states and 272 transitions. [2023-11-06 23:05:23,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:05:23,179 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 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 56 [2023-11-06 23:05:23,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:05:23,181 INFO L225 Difference]: With dead ends: 212 [2023-11-06 23:05:23,181 INFO L226 Difference]: Without dead ends: 211 [2023-11-06 23:05:23,181 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 [2023-11-06 23:05:23,182 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 4 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:05:23,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 182 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:05:23,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2023-11-06 23:05:23,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 190. [2023-11-06 23:05:23,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 151 states have (on average 1.1390728476821192) internal successors, (172), 147 states have internal predecessors, (172), 23 states have call successors, (23), 9 states have call predecessors, (23), 12 states have return successors, (49), 33 states have call predecessors, (49), 22 states have call successors, (49) [2023-11-06 23:05:23,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 244 transitions. [2023-11-06 23:05:23,199 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 244 transitions. Word has length 56 [2023-11-06 23:05:23,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:05:23,200 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 244 transitions. [2023-11-06 23:05:23,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 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) [2023-11-06 23:05:23,200 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 244 transitions. [2023-11-06 23:05:23,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-11-06 23:05:23,201 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:05:23,201 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1] [2023-11-06 23:05:23,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 23:05:23,202 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-06 23:05:23,202 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:23,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1552143473, now seen corresponding path program 1 times [2023-11-06 23:05:23,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:23,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151933423] [2023-11-06 23:05:23,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:23,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:23,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:23,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 23:05:23,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:23,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-06 23:05:23,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:23,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:23,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:23,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-06 23:05:23,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:23,293 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-06 23:05:23,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:23,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151933423] [2023-11-06 23:05:23,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151933423] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:05:23,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52701394] [2023-11-06 23:05:23,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:23,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:23,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:23,295 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:05:23,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 23:05:23,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:23,370 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 23:05:23,398 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:05:23,613 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 28 proven. 33 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 23:05:23,613 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:05:23,856 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 28 proven. 33 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 23:05:23,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52701394] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:05:23,857 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:05:23,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 15, 15] total 19 [2023-11-06 23:05:23,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132149631] [2023-11-06 23:05:23,858 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:05:23,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-06 23:05:23,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:23,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-06 23:05:23,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2023-11-06 23:05:23,860 INFO L87 Difference]: Start difference. First operand 190 states and 244 transitions. Second operand has 19 states, 18 states have (on average 4.166666666666667) internal successors, (75), 14 states have internal predecessors, (75), 9 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-06 23:05:24,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:05:24,370 INFO L93 Difference]: Finished difference Result 452 states and 615 transitions. [2023-11-06 23:05:24,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-06 23:05:24,371 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 4.166666666666667) internal successors, (75), 14 states have internal predecessors, (75), 9 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 68 [2023-11-06 23:05:24,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:05:24,374 INFO L225 Difference]: With dead ends: 452 [2023-11-06 23:05:24,374 INFO L226 Difference]: Without dead ends: 283 [2023-11-06 23:05:24,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 123 SyntacticMatches, 12 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2023-11-06 23:05:24,377 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 200 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 23:05:24,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 258 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 23:05:24,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2023-11-06 23:05:24,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 257. [2023-11-06 23:05:24,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 205 states have (on average 1.1317073170731706) internal successors, (232), 199 states have internal predecessors, (232), 32 states have call successors, (32), 12 states have call predecessors, (32), 16 states have return successors, (64), 45 states have call predecessors, (64), 31 states have call successors, (64) [2023-11-06 23:05:24,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 328 transitions. [2023-11-06 23:05:24,407 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 328 transitions. Word has length 68 [2023-11-06 23:05:24,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:05:24,407 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 328 transitions. [2023-11-06 23:05:24,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 4.166666666666667) internal successors, (75), 14 states have internal predecessors, (75), 9 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-06 23:05:24,408 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 328 transitions. [2023-11-06 23:05:24,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-06 23:05:24,409 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:05:24,409 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 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] [2023-11-06 23:05:24,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 23:05:24,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-06 23:05:24,616 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-06 23:05:24,616 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:24,616 INFO L85 PathProgramCache]: Analyzing trace with hash -814149297, now seen corresponding path program 1 times [2023-11-06 23:05:24,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:24,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753087101] [2023-11-06 23:05:24,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:24,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:24,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:24,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-06 23:05:24,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:24,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:24,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:24,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 23:05:24,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:24,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-06 23:05:24,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:24,706 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-06 23:05:24,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:24,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753087101] [2023-11-06 23:05:24,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753087101] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:24,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:24,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:05:24,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086821680] [2023-11-06 23:05:24,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:24,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:05:24,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:24,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:05:24,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:05:24,710 INFO L87 Difference]: Start difference. First operand 257 states and 328 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 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) [2023-11-06 23:05:24,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:05:24,766 INFO L93 Difference]: Finished difference Result 279 states and 353 transitions. [2023-11-06 23:05:24,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:05:24,767 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 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 62 [2023-11-06 23:05:24,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:05:24,770 INFO L225 Difference]: With dead ends: 279 [2023-11-06 23:05:24,770 INFO L226 Difference]: Without dead ends: 278 [2023-11-06 23:05:24,771 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 [2023-11-06 23:05:24,772 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 4 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 23:05:24,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 107 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 23:05:24,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2023-11-06 23:05:24,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 265. [2023-11-06 23:05:24,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 212 states have (on average 1.1273584905660377) internal successors, (239), 205 states have internal predecessors, (239), 32 states have call successors, (32), 12 states have call predecessors, (32), 17 states have return successors, (65), 47 states have call predecessors, (65), 31 states have call successors, (65) [2023-11-06 23:05:24,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 336 transitions. [2023-11-06 23:05:24,798 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 336 transitions. Word has length 62 [2023-11-06 23:05:24,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:05:24,799 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 336 transitions. [2023-11-06 23:05:24,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 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) [2023-11-06 23:05:24,799 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 336 transitions. [2023-11-06 23:05:24,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-06 23:05:24,800 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:05:24,801 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 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] [2023-11-06 23:05:24,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-06 23:05:24,801 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-06 23:05:24,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:24,802 INFO L85 PathProgramCache]: Analyzing trace with hash 898913762, now seen corresponding path program 1 times [2023-11-06 23:05:24,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:24,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860360637] [2023-11-06 23:05:24,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:24,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:24,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:24,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-06 23:05:24,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:24,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:24,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:24,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 23:05:24,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:24,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-06 23:05:24,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:24,999 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-06 23:05:25,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:25,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860360637] [2023-11-06 23:05:25,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860360637] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:25,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:25,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 23:05:25,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897425745] [2023-11-06 23:05:25,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:25,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 23:05:25,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:25,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 23:05:25,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-06 23:05:25,003 INFO L87 Difference]: Start difference. First operand 265 states and 336 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) [2023-11-06 23:05:25,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:05:25,121 INFO L93 Difference]: Finished difference Result 350 states and 453 transitions. [2023-11-06 23:05:25,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 23:05:25,122 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 63 [2023-11-06 23:05:25,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:05:25,125 INFO L225 Difference]: With dead ends: 350 [2023-11-06 23:05:25,126 INFO L226 Difference]: Without dead ends: 349 [2023-11-06 23:05:25,127 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 [2023-11-06 23:05:25,127 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 10 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 23:05:25,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 290 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 23:05:25,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2023-11-06 23:05:25,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 282. [2023-11-06 23:05:25,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 224 states have (on average 1.1205357142857142) internal successors, (251), 219 states have internal predecessors, (251), 34 states have call successors, (34), 12 states have call predecessors, (34), 20 states have return successors, (81), 50 states have call predecessors, (81), 33 states have call successors, (81) [2023-11-06 23:05:25,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 366 transitions. [2023-11-06 23:05:25,155 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 366 transitions. Word has length 63 [2023-11-06 23:05:25,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:05:25,155 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 366 transitions. [2023-11-06 23:05:25,155 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) [2023-11-06 23:05:25,156 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 366 transitions. [2023-11-06 23:05:25,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-06 23:05:25,157 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:05:25,157 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:25,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-06 23:05:25,158 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-06 23:05:25,158 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:25,158 INFO L85 PathProgramCache]: Analyzing trace with hash 214252475, now seen corresponding path program 1 times [2023-11-06 23:05:25,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:25,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944291029] [2023-11-06 23:05:25,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:25,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:25,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:25,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 23:05:25,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:25,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-06 23:05:25,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:25,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-06 23:05:25,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:25,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:25,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:25,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-06 23:05:25,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:25,257 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2023-11-06 23:05:25,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:25,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944291029] [2023-11-06 23:05:25,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944291029] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:05:25,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659065508] [2023-11-06 23:05:25,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:25,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:25,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:25,260 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:05:25,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 23:05:25,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:25,343 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 23:05:25,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:05:25,552 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 87 proven. 6 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-06 23:05:25,553 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:05:25,777 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 39 proven. 46 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-06 23:05:25,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659065508] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:05:25,778 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:05:25,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 15, 15] total 18 [2023-11-06 23:05:25,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678059770] [2023-11-06 23:05:25,779 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:05:25,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-06 23:05:25,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:25,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 23:05:25,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2023-11-06 23:05:25,781 INFO L87 Difference]: Start difference. First operand 282 states and 366 transitions. Second operand has 18 states, 17 states have (on average 5.0) internal successors, (85), 12 states have internal predecessors, (85), 9 states have call successors, (18), 8 states have call predecessors, (18), 3 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2023-11-06 23:05:26,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:05:26,281 INFO L93 Difference]: Finished difference Result 362 states and 460 transitions. [2023-11-06 23:05:26,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-06 23:05:26,282 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 5.0) internal successors, (85), 12 states have internal predecessors, (85), 9 states have call successors, (18), 8 states have call predecessors, (18), 3 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 81 [2023-11-06 23:05:26,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:05:26,285 INFO L225 Difference]: With dead ends: 362 [2023-11-06 23:05:26,285 INFO L226 Difference]: Without dead ends: 303 [2023-11-06 23:05:26,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 151 SyntacticMatches, 13 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=153, Invalid=717, Unknown=0, NotChecked=0, Total=870 [2023-11-06 23:05:26,287 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 163 mSDsluCounter, 252 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 23:05:26,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 276 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 525 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 23:05:26,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2023-11-06 23:05:26,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 290. [2023-11-06 23:05:26,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 230 states have (on average 1.117391304347826) internal successors, (257), 225 states have internal predecessors, (257), 35 states have call successors, (35), 13 states have call predecessors, (35), 21 states have return successors, (85), 51 states have call predecessors, (85), 34 states have call successors, (85) [2023-11-06 23:05:26,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 377 transitions. [2023-11-06 23:05:26,312 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 377 transitions. Word has length 81 [2023-11-06 23:05:26,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:05:26,313 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 377 transitions. [2023-11-06 23:05:26,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 5.0) internal successors, (85), 12 states have internal predecessors, (85), 9 states have call successors, (18), 8 states have call predecessors, (18), 3 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2023-11-06 23:05:26,313 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 377 transitions. [2023-11-06 23:05:26,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2023-11-06 23:05:26,315 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:05:26,315 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2023-11-06 23:05:26,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 23:05:26,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:26,527 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-06 23:05:26,528 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:26,528 INFO L85 PathProgramCache]: Analyzing trace with hash 215753064, now seen corresponding path program 1 times [2023-11-06 23:05:26,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:26,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688950173] [2023-11-06 23:05:26,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:26,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:26,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:26,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-06 23:05:26,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:26,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-06 23:05:26,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:26,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:26,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:26,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-06 23:05:26,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:26,617 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-11-06 23:05:26,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:26,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688950173] [2023-11-06 23:05:26,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688950173] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:05:26,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445382677] [2023-11-06 23:05:26,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:26,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:26,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:26,619 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:05:26,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 23:05:26,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:26,687 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-06 23:05:26,690 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:05:26,971 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 36 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 23:05:26,971 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:05:27,344 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 36 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 23:05:27,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445382677] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:05:27,345 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:05:27,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 17, 17] total 34 [2023-11-06 23:05:27,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67073584] [2023-11-06 23:05:27,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:05:27,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-11-06 23:05:27,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:27,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-11-06 23:05:27,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=993, Unknown=0, NotChecked=0, Total=1122 [2023-11-06 23:05:27,348 INFO L87 Difference]: Start difference. First operand 290 states and 377 transitions. Second operand has 34 states, 32 states have (on average 3.59375) internal successors, (115), 22 states have internal predecessors, (115), 17 states have call successors, (23), 13 states have call predecessors, (23), 3 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-06 23:05:28,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:05:28,273 INFO L93 Difference]: Finished difference Result 556 states and 744 transitions. [2023-11-06 23:05:28,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-06 23:05:28,274 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 3.59375) internal successors, (115), 22 states have internal predecessors, (115), 17 states have call successors, (23), 13 states have call predecessors, (23), 3 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) Word has length 73 [2023-11-06 23:05:28,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:05:28,277 INFO L225 Difference]: With dead ends: 556 [2023-11-06 23:05:28,277 INFO L226 Difference]: Without dead ends: 310 [2023-11-06 23:05:28,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 676 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=437, Invalid=2319, Unknown=0, NotChecked=0, Total=2756 [2023-11-06 23:05:28,283 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 384 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 854 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-06 23:05:28,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 412 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 854 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-06 23:05:28,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2023-11-06 23:05:28,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 283. [2023-11-06 23:05:28,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 223 states have (on average 1.1076233183856503) internal successors, (247), 222 states have internal predecessors, (247), 34 states have call successors, (34), 14 states have call predecessors, (34), 22 states have return successors, (65), 46 states have call predecessors, (65), 33 states have call successors, (65) [2023-11-06 23:05:28,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 346 transitions. [2023-11-06 23:05:28,313 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 346 transitions. Word has length 73 [2023-11-06 23:05:28,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:05:28,313 INFO L495 AbstractCegarLoop]: Abstraction has 283 states and 346 transitions. [2023-11-06 23:05:28,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 3.59375) internal successors, (115), 22 states have internal predecessors, (115), 17 states have call successors, (23), 13 states have call predecessors, (23), 3 states have return successors, (10), 6 states have call predecessors, (10), 5 states have call successors, (10) [2023-11-06 23:05:28,314 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 346 transitions. [2023-11-06 23:05:28,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-06 23:05:28,315 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:05:28,315 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-06 23:05:28,327 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 23:05:28,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:28,527 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-06 23:05:28,528 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:28,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1999226584, now seen corresponding path program 1 times [2023-11-06 23:05:28,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:28,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332286816] [2023-11-06 23:05:28,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:28,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:28,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:28,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 23:05:28,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:28,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:28,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:28,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-06 23:05:28,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:28,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-06 23:05:28,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:28,622 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-11-06 23:05:28,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:28,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332286816] [2023-11-06 23:05:28,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332286816] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 23:05:28,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 23:05:28,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 23:05:28,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630975713] [2023-11-06 23:05:28,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 23:05:28,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 23:05:28,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:28,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 23:05:28,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 23:05:28,626 INFO L87 Difference]: Start difference. First operand 283 states and 346 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) [2023-11-06 23:05:28,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:05:28,678 INFO L93 Difference]: Finished difference Result 297 states and 362 transitions. [2023-11-06 23:05:28,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 23:05:28,679 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 67 [2023-11-06 23:05:28,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:05:28,683 INFO L225 Difference]: With dead ends: 297 [2023-11-06 23:05:28,684 INFO L226 Difference]: Without dead ends: 296 [2023-11-06 23:05:28,684 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 [2023-11-06 23:05:28,686 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 [2023-11-06 23:05:28,687 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] [2023-11-06 23:05:28,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2023-11-06 23:05:28,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 279. [2023-11-06 23:05:28,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 220 states have (on average 1.1) internal successors, (242), 219 states have internal predecessors, (242), 33 states have call successors, (33), 14 states have call predecessors, (33), 22 states have return successors, (64), 45 states have call predecessors, (64), 32 states have call successors, (64) [2023-11-06 23:05:28,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 339 transitions. [2023-11-06 23:05:28,709 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 339 transitions. Word has length 67 [2023-11-06 23:05:28,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:05:28,709 INFO L495 AbstractCegarLoop]: Abstraction has 279 states and 339 transitions. [2023-11-06 23:05:28,709 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) [2023-11-06 23:05:28,710 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 339 transitions. [2023-11-06 23:05:28,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-06 23:05:28,711 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:05:28,711 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2023-11-06 23:05:28,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-06 23:05:28,712 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-06 23:05:28,715 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:28,715 INFO L85 PathProgramCache]: Analyzing trace with hash -2127390472, now seen corresponding path program 1 times [2023-11-06 23:05:28,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:28,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011211076] [2023-11-06 23:05:28,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:28,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:28,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:28,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-06 23:05:28,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:28,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:28,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:28,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 23:05:28,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:28,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-06 23:05:28,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:29,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:29,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:29,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:29,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:29,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-06 23:05:29,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:29,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 23:05:29,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:29,067 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 32 proven. 64 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-06 23:05:29,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:29,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011211076] [2023-11-06 23:05:29,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011211076] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:05:29,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669022576] [2023-11-06 23:05:29,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:29,069 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:29,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:29,072 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:05:29,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 23:05:29,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:29,155 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 23:05:29,159 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:05:29,280 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 39 proven. 67 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 23:05:29,281 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:05:29,591 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 39 proven. 67 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 23:05:29,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669022576] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:05:29,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:05:29,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 20 [2023-11-06 23:05:29,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785493382] [2023-11-06 23:05:29,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:05:29,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-06 23:05:29,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:29,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-06 23:05:29,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2023-11-06 23:05:29,595 INFO L87 Difference]: Start difference. First operand 279 states and 339 transitions. Second operand has 20 states, 19 states have (on average 4.894736842105263) internal successors, (93), 16 states have internal predecessors, (93), 11 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (13), 6 states have call predecessors, (13), 7 states have call successors, (13) [2023-11-06 23:05:29,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:05:29,988 INFO L93 Difference]: Finished difference Result 501 states and 607 transitions. [2023-11-06 23:05:29,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-06 23:05:29,990 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.894736842105263) internal successors, (93), 16 states have internal predecessors, (93), 11 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (13), 6 states have call predecessors, (13), 7 states have call successors, (13) Word has length 99 [2023-11-06 23:05:29,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:05:29,992 INFO L225 Difference]: With dead ends: 501 [2023-11-06 23:05:29,993 INFO L226 Difference]: Without dead ends: 286 [2023-11-06 23:05:29,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 202 SyntacticMatches, 11 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=173, Invalid=819, Unknown=0, NotChecked=0, Total=992 [2023-11-06 23:05:29,996 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 208 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 23:05:29,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 195 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 23:05:29,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2023-11-06 23:05:30,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 281. [2023-11-06 23:05:30,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 221 states have (on average 1.0995475113122173) internal successors, (243), 221 states have internal predecessors, (243), 33 states have call successors, (33), 15 states have call predecessors, (33), 23 states have return successors, (62), 44 states have call predecessors, (62), 32 states have call successors, (62) [2023-11-06 23:05:30,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 338 transitions. [2023-11-06 23:05:30,020 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 338 transitions. Word has length 99 [2023-11-06 23:05:30,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:05:30,020 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 338 transitions. [2023-11-06 23:05:30,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.894736842105263) internal successors, (93), 16 states have internal predecessors, (93), 11 states have call successors, (17), 5 states have call predecessors, (17), 3 states have return successors, (13), 6 states have call predecessors, (13), 7 states have call successors, (13) [2023-11-06 23:05:30,021 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 338 transitions. [2023-11-06 23:05:30,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-06 23:05:30,023 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:05:30,023 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2023-11-06 23:05:30,035 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-06 23:05:30,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-06 23:05:30,230 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-06 23:05:30,231 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:30,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1319567220, now seen corresponding path program 1 times [2023-11-06 23:05:30,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:30,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790282764] [2023-11-06 23:05:30,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:30,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:30,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:30,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 23:05:30,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:30,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:30,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:30,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:30,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:30,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 23:05:30,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:30,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-06 23:05:30,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:30,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-06 23:05:30,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:30,555 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 11 proven. 40 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-06 23:05:30,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:30,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790282764] [2023-11-06 23:05:30,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790282764] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:05:30,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476328591] [2023-11-06 23:05:30,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:30,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:30,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:30,558 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:05:30,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-06 23:05:30,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:30,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 23:05:30,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:05:30,723 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 31 proven. 36 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-06 23:05:30,723 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:05:30,991 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 14 proven. 43 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-06 23:05:30,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476328591] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:05:30,991 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:05:30,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 20 [2023-11-06 23:05:30,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402959603] [2023-11-06 23:05:30,992 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:05:30,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-06 23:05:30,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:30,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-06 23:05:30,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2023-11-06 23:05:30,994 INFO L87 Difference]: Start difference. First operand 281 states and 338 transitions. Second operand has 20 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 17 states have internal predecessors, (91), 10 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (14), 8 states have call predecessors, (14), 7 states have call successors, (14) [2023-11-06 23:05:31,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:05:31,372 INFO L93 Difference]: Finished difference Result 518 states and 626 transitions. [2023-11-06 23:05:31,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-06 23:05:31,373 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 17 states have internal predecessors, (91), 10 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (14), 8 states have call predecessors, (14), 7 states have call successors, (14) Word has length 76 [2023-11-06 23:05:31,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:05:31,376 INFO L225 Difference]: With dead ends: 518 [2023-11-06 23:05:31,376 INFO L226 Difference]: Without dead ends: 277 [2023-11-06 23:05:31,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 156 SyntacticMatches, 9 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=543, Unknown=0, NotChecked=0, Total=650 [2023-11-06 23:05:31,378 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 118 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 23:05:31,379 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 430 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 23:05:31,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2023-11-06 23:05:31,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 267. [2023-11-06 23:05:31,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 211 states have (on average 1.09478672985782) internal successors, (231), 209 states have internal predecessors, (231), 31 states have call successors, (31), 15 states have call predecessors, (31), 21 states have return successors, (52), 42 states have call predecessors, (52), 30 states have call successors, (52) [2023-11-06 23:05:31,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 314 transitions. [2023-11-06 23:05:31,400 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 314 transitions. Word has length 76 [2023-11-06 23:05:31,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:05:31,401 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 314 transitions. [2023-11-06 23:05:31,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.7894736842105265) internal successors, (91), 17 states have internal predecessors, (91), 10 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (14), 8 states have call predecessors, (14), 7 states have call successors, (14) [2023-11-06 23:05:31,401 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 314 transitions. [2023-11-06 23:05:31,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2023-11-06 23:05:31,403 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:05:31,403 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2023-11-06 23:05:31,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-06 23:05:31,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-06 23:05:31,610 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-06 23:05:31,610 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:31,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1385478177, now seen corresponding path program 1 times [2023-11-06 23:05:31,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:31,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662460151] [2023-11-06 23:05:31,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:31,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:31,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:31,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 23:05:31,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:31,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:31,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:31,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:31,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:31,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 23:05:31,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:31,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-06 23:05:31,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:31,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-06 23:05:31,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:31,779 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 18 proven. 38 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-06 23:05:31,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:31,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662460151] [2023-11-06 23:05:31,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662460151] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:05:31,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917176580] [2023-11-06 23:05:31,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:31,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:31,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:31,783 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:05:31,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-06 23:05:31,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:31,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 23:05:31,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:05:31,928 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 18 proven. 38 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-06 23:05:31,928 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:05:32,084 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 18 proven. 38 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-06 23:05:32,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917176580] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:05:32,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:05:32,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 13 [2023-11-06 23:05:32,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669255432] [2023-11-06 23:05:32,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:05:32,087 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-06 23:05:32,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:32,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-06 23:05:32,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-11-06 23:05:32,090 INFO L87 Difference]: Start difference. First operand 267 states and 314 transitions. Second operand has 13 states, 12 states have (on average 5.0) internal successors, (60), 10 states have internal predecessors, (60), 5 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-06 23:05:32,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:05:32,320 INFO L93 Difference]: Finished difference Result 461 states and 540 transitions. [2023-11-06 23:05:32,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 23:05:32,321 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.0) internal successors, (60), 10 states have internal predecessors, (60), 5 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 77 [2023-11-06 23:05:32,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:05:32,325 INFO L225 Difference]: With dead ends: 461 [2023-11-06 23:05:32,325 INFO L226 Difference]: Without dead ends: 271 [2023-11-06 23:05:32,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 158 SyntacticMatches, 8 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2023-11-06 23:05:32,330 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 86 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 23:05:32,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 401 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 23:05:32,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2023-11-06 23:05:32,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 265. [2023-11-06 23:05:32,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 209 states have (on average 1.0956937799043063) internal successors, (229), 208 states have internal predecessors, (229), 31 states have call successors, (31), 15 states have call predecessors, (31), 21 states have return successors, (51), 41 states have call predecessors, (51), 30 states have call successors, (51) [2023-11-06 23:05:32,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 311 transitions. [2023-11-06 23:05:32,352 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 311 transitions. Word has length 77 [2023-11-06 23:05:32,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:05:32,353 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 311 transitions. [2023-11-06 23:05:32,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.0) internal successors, (60), 10 states have internal predecessors, (60), 5 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-06 23:05:32,353 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 311 transitions. [2023-11-06 23:05:32,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-06 23:05:32,355 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:05:32,355 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 23:05:32,361 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-06 23:05:32,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:32,556 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-06 23:05:32,556 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:32,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1504852425, now seen corresponding path program 1 times [2023-11-06 23:05:32,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:32,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680408475] [2023-11-06 23:05:32,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:32,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:32,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:32,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-06 23:05:32,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:32,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:32,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:32,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:32,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:32,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-06 23:05:32,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:32,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 23:05:32,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:32,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-06 23:05:32,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:32,853 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 17 proven. 52 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-06 23:05:32,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:32,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680408475] [2023-11-06 23:05:32,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680408475] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:05:32,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [56378489] [2023-11-06 23:05:32,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:32,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:32,855 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:32,856 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:05:32,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-06 23:05:32,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:32,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 23:05:32,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:05:33,171 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-11-06 23:05:33,171 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:05:33,717 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-11-06 23:05:33,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [56378489] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:05:33,717 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:05:33,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 11] total 30 [2023-11-06 23:05:33,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952081288] [2023-11-06 23:05:33,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:05:33,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-06 23:05:33,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:33,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-06 23:05:33,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=787, Unknown=0, NotChecked=0, Total=870 [2023-11-06 23:05:33,720 INFO L87 Difference]: Start difference. First operand 265 states and 311 transitions. Second operand has 30 states, 29 states have (on average 3.413793103448276) internal successors, (99), 26 states have internal predecessors, (99), 12 states have call successors, (15), 5 states have call predecessors, (15), 8 states have return successors, (15), 11 states have call predecessors, (15), 8 states have call successors, (15) [2023-11-06 23:05:35,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:05:35,074 INFO L93 Difference]: Finished difference Result 483 states and 575 transitions. [2023-11-06 23:05:35,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2023-11-06 23:05:35,075 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 3.413793103448276) internal successors, (99), 26 states have internal predecessors, (99), 12 states have call successors, (15), 5 states have call predecessors, (15), 8 states have return successors, (15), 11 states have call predecessors, (15), 8 states have call successors, (15) Word has length 81 [2023-11-06 23:05:35,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:05:35,078 INFO L225 Difference]: With dead ends: 483 [2023-11-06 23:05:35,078 INFO L226 Difference]: Without dead ends: 264 [2023-11-06 23:05:35,081 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 167 SyntacticMatches, 3 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 754 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=441, Invalid=3099, Unknown=0, NotChecked=0, Total=3540 [2023-11-06 23:05:35,082 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 253 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 1185 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 1266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-06 23:05:35,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 372 Invalid, 1266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1185 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-06 23:05:35,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2023-11-06 23:05:35,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 231. [2023-11-06 23:05:35,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 181 states have (on average 1.0828729281767955) internal successors, (196), 183 states have internal predecessors, (196), 26 states have call successors, (26), 15 states have call predecessors, (26), 20 states have return successors, (37), 32 states have call predecessors, (37), 25 states have call successors, (37) [2023-11-06 23:05:35,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 259 transitions. [2023-11-06 23:05:35,102 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 259 transitions. Word has length 81 [2023-11-06 23:05:35,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:05:35,102 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 259 transitions. [2023-11-06 23:05:35,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 3.413793103448276) internal successors, (99), 26 states have internal predecessors, (99), 12 states have call successors, (15), 5 states have call predecessors, (15), 8 states have return successors, (15), 11 states have call predecessors, (15), 8 states have call successors, (15) [2023-11-06 23:05:35,103 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 259 transitions. [2023-11-06 23:05:35,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-06 23:05:35,104 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:05:35,104 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-06 23:05:35,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-06 23:05:35,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-06 23:05:35,312 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-06 23:05:35,312 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:35,312 INFO L85 PathProgramCache]: Analyzing trace with hash -506977808, now seen corresponding path program 1 times [2023-11-06 23:05:35,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:35,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610373680] [2023-11-06 23:05:35,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:35,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:35,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:35,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 23:05:35,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:35,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:35,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:35,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:35,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:35,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 23:05:35,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:35,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-06 23:05:35,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:35,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-06 23:05:35,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:35,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:35,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:35,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 23:05:35,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:35,723 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-11-06 23:05:35,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:35,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610373680] [2023-11-06 23:05:35,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610373680] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:05:35,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1894020300] [2023-11-06 23:05:35,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:35,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:35,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:35,725 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:05:35,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-06 23:05:35,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:35,816 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-06 23:05:35,818 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:05:36,021 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 8 proven. 19 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-11-06 23:05:36,022 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:05:36,638 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 16 proven. 19 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-11-06 23:05:36,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1894020300] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:05:36,639 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:05:36,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 15] total 28 [2023-11-06 23:05:36,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663544155] [2023-11-06 23:05:36,639 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:05:36,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-06 23:05:36,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:36,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-06 23:05:36,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=699, Unknown=0, NotChecked=0, Total=812 [2023-11-06 23:05:36,642 INFO L87 Difference]: Start difference. First operand 231 states and 259 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) [2023-11-06 23:05:36,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:05:36,990 INFO L93 Difference]: Finished difference Result 248 states and 277 transitions. [2023-11-06 23:05:36,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-06 23:05:36,991 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 95 [2023-11-06 23:05:36,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:05:36,993 INFO L225 Difference]: With dead ends: 248 [2023-11-06 23:05:36,993 INFO L226 Difference]: Without dead ends: 246 [2023-11-06 23:05:36,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 189 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=201, Invalid=1131, Unknown=0, NotChecked=0, Total=1332 [2023-11-06 23:05:36,995 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 15 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 23:05:36,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 741 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 23:05:36,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2023-11-06 23:05:37,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 223. [2023-11-06 23:05:37,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 176 states have (on average 1.0568181818181819) internal successors, (186), 177 states have internal predecessors, (186), 26 states have call successors, (26), 15 states have call predecessors, (26), 19 states have return successors, (35), 30 states have call predecessors, (35), 25 states have call successors, (35) [2023-11-06 23:05:37,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 247 transitions. [2023-11-06 23:05:37,013 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 247 transitions. Word has length 95 [2023-11-06 23:05:37,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:05:37,013 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 247 transitions. [2023-11-06 23:05:37,014 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) [2023-11-06 23:05:37,014 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 247 transitions. [2023-11-06 23:05:37,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2023-11-06 23:05:37,015 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:05:37,015 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-11-06 23:05:37,029 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-06 23:05:37,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-06 23:05:37,222 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-06 23:05:37,222 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:37,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1463557235, now seen corresponding path program 1 times [2023-11-06 23:05:37,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:37,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882376336] [2023-11-06 23:05:37,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:37,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:37,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:37,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 23:05:37,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:37,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:37,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:37,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:37,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:37,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 23:05:37,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:37,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-06 23:05:37,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:37,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-11-06 23:05:37,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:37,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:37,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:37,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 23:05:37,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:37,570 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-11-06 23:05:37,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:37,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882376336] [2023-11-06 23:05:37,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882376336] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:05:37,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [874245163] [2023-11-06 23:05:37,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:37,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:37,571 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:37,572 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:05:37,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-06 23:05:37,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:37,649 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-06 23:05:37,651 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:05:37,804 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-11-06 23:05:37,804 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:05:38,453 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 23 proven. 13 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-11-06 23:05:38,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [874245163] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:05:38,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:05:38,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 16] total 26 [2023-11-06 23:05:38,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797611505] [2023-11-06 23:05:38,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:05:38,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-06 23:05:38,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:38,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-06 23:05:38,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2023-11-06 23:05:38,457 INFO L87 Difference]: Start difference. First operand 223 states and 247 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) [2023-11-06 23:05:38,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:05:38,639 INFO L93 Difference]: Finished difference Result 258 states and 287 transitions. [2023-11-06 23:05:38,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-06 23:05:38,640 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 96 [2023-11-06 23:05:38,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:05:38,642 INFO L225 Difference]: With dead ends: 258 [2023-11-06 23:05:38,643 INFO L226 Difference]: Without dead ends: 256 [2023-11-06 23:05:38,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 191 SyntacticMatches, 7 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=130, Invalid=740, Unknown=0, NotChecked=0, Total=870 [2023-11-06 23:05:38,644 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 12 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 23:05:38,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 358 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 23:05:38,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2023-11-06 23:05:38,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 217. [2023-11-06 23:05:38,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 171 states have (on average 1.04093567251462) internal successors, (178), 173 states have internal predecessors, (178), 24 states have call successors, (24), 15 states have call predecessors, (24), 20 states have return successors, (32), 28 states have call predecessors, (32), 23 states have call successors, (32) [2023-11-06 23:05:38,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 234 transitions. [2023-11-06 23:05:38,661 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 234 transitions. Word has length 96 [2023-11-06 23:05:38,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:05:38,661 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 234 transitions. [2023-11-06 23:05:38,661 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) [2023-11-06 23:05:38,661 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 234 transitions. [2023-11-06 23:05:38,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2023-11-06 23:05:38,664 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:05:38,665 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2023-11-06 23:05:38,675 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-06 23:05:38,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-06 23:05:38,871 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-06 23:05:38,871 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:38,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1280249801, now seen corresponding path program 1 times [2023-11-06 23:05:38,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:38,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610844044] [2023-11-06 23:05:38,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:38,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:38,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:39,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 23:05:39,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:39,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:39,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:39,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:39,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:39,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:39,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:39,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 23:05:39,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:39,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-06 23:05:39,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:39,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-06 23:05:39,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:39,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:39,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:39,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 23:05:39,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:39,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-06 23:05:39,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:39,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:39,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:39,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:39,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:39,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 23:05:39,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:39,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-06 23:05:39,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:39,661 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 45 proven. 59 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-11-06 23:05:39,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:39,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610844044] [2023-11-06 23:05:39,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610844044] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:05:39,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583177309] [2023-11-06 23:05:39,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:39,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:39,662 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:39,663 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:05:39,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-06 23:05:39,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:39,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-06 23:05:39,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:05:40,035 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 45 proven. 59 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-11-06 23:05:40,036 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:05:41,588 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 74 proven. 54 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-06 23:05:41,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583177309] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:05:41,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:05:41,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 22] total 36 [2023-11-06 23:05:41,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689617234] [2023-11-06 23:05:41,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:05:41,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-11-06 23:05:41,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:41,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-11-06 23:05:41,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1152, Unknown=0, NotChecked=0, Total=1332 [2023-11-06 23:05:41,591 INFO L87 Difference]: Start difference. First operand 217 states and 234 transitions. Second operand has 37 states, 36 states have (on average 2.7777777777777777) internal successors, (100), 37 states have internal predecessors, (100), 9 states have call successors, (11), 1 states have call predecessors, (11), 11 states have return successors, (24), 24 states have call predecessors, (24), 9 states have call successors, (24) [2023-11-06 23:05:41,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:05:41,774 INFO L93 Difference]: Finished difference Result 229 states and 245 transitions. [2023-11-06 23:05:41,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-06 23:05:41,774 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.7777777777777777) internal successors, (100), 37 states have internal predecessors, (100), 9 states have call successors, (11), 1 states have call predecessors, (11), 11 states have return successors, (24), 24 states have call predecessors, (24), 9 states have call successors, (24) Word has length 149 [2023-11-06 23:05:41,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:05:41,777 INFO L225 Difference]: With dead ends: 229 [2023-11-06 23:05:41,777 INFO L226 Difference]: Without dead ends: 219 [2023-11-06 23:05:41,778 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 355 GetRequests, 302 SyntacticMatches, 16 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 890 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=200, Invalid=1282, Unknown=0, NotChecked=0, Total=1482 [2023-11-06 23:05:41,779 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 12 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 441 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 23:05:41,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 441 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 23:05:41,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2023-11-06 23:05:41,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 205. [2023-11-06 23:05:41,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 205 states, 161 states have (on average 1.031055900621118) internal successors, (166), 164 states have internal predecessors, (166), 24 states have call successors, (24), 15 states have call predecessors, (24), 19 states have return successors, (30), 25 states have call predecessors, (30), 23 states have call successors, (30) [2023-11-06 23:05:41,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 220 transitions. [2023-11-06 23:05:41,804 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 220 transitions. Word has length 149 [2023-11-06 23:05:41,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:05:41,805 INFO L495 AbstractCegarLoop]: Abstraction has 205 states and 220 transitions. [2023-11-06 23:05:41,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.7777777777777777) internal successors, (100), 37 states have internal predecessors, (100), 9 states have call successors, (11), 1 states have call predecessors, (11), 11 states have return successors, (24), 24 states have call predecessors, (24), 9 states have call successors, (24) [2023-11-06 23:05:41,805 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 220 transitions. [2023-11-06 23:05:41,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2023-11-06 23:05:41,808 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:05:41,808 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 9, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 2, 2, 1, 1, 1, 1] [2023-11-06 23:05:41,816 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-06 23:05:42,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-06 23:05:42,015 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-06 23:05:42,016 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:42,016 INFO L85 PathProgramCache]: Analyzing trace with hash 300344915, now seen corresponding path program 2 times [2023-11-06 23:05:42,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:42,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432213416] [2023-11-06 23:05:42,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:42,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:42,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:42,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 23:05:42,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:42,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:42,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:42,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:42,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:42,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:42,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:42,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:42,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:42,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 23:05:42,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:42,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-06 23:05:42,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:42,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-06 23:05:42,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:42,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:42,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:42,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 23:05:42,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:42,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-06 23:05:42,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:42,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:42,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:42,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:42,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:42,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 23:05:42,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:42,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-06 23:05:42,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:42,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-11-06 23:05:42,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:42,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:42,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:42,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:42,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:42,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 23:05:42,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:42,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-06 23:05:42,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:42,385 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 178 proven. 56 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked. [2023-11-06 23:05:42,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:42,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432213416] [2023-11-06 23:05:42,386 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432213416] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:05:42,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233750907] [2023-11-06 23:05:42,386 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 23:05:42,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:42,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:42,388 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:05:42,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-06 23:05:42,532 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 23:05:42,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:05:42,534 INFO L262 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 23:05:42,538 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:05:42,646 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 360 proven. 58 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2023-11-06 23:05:42,647 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:05:43,111 INFO L134 CoverageAnalysis]: Checked inductivity of 644 backedges. 109 proven. 121 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2023-11-06 23:05:43,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233750907] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:05:43,111 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:05:43,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 11] total 19 [2023-11-06 23:05:43,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942858779] [2023-11-06 23:05:43,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:05:43,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-06 23:05:43,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:43,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-06 23:05:43,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2023-11-06 23:05:43,114 INFO L87 Difference]: Start difference. First operand 205 states and 220 transitions. Second operand has 19 states, 18 states have (on average 7.277777777777778) internal successors, (131), 18 states have internal predecessors, (131), 12 states have call successors, (24), 3 states have call predecessors, (24), 7 states have return successors, (24), 12 states have call predecessors, (24), 11 states have call successors, (24) [2023-11-06 23:05:43,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:05:43,387 INFO L93 Difference]: Finished difference Result 330 states and 364 transitions. [2023-11-06 23:05:43,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 23:05:43,387 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 7.277777777777778) internal successors, (131), 18 states have internal predecessors, (131), 12 states have call successors, (24), 3 states have call predecessors, (24), 7 states have return successors, (24), 12 states have call predecessors, (24), 11 states have call successors, (24) Word has length 202 [2023-11-06 23:05:43,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:05:43,389 INFO L225 Difference]: With dead ends: 330 [2023-11-06 23:05:43,389 INFO L226 Difference]: Without dead ends: 194 [2023-11-06 23:05:43,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 457 GetRequests, 430 SyntacticMatches, 6 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=401, Unknown=0, NotChecked=0, Total=506 [2023-11-06 23:05:43,390 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 89 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 23:05:43,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 215 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 23:05:43,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2023-11-06 23:05:43,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 191. [2023-11-06 23:05:43,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 151 states have (on average 1.0264900662251655) internal successors, (155), 152 states have internal predecessors, (155), 23 states have call successors, (23), 16 states have call predecessors, (23), 16 states have return successors, (23), 22 states have call predecessors, (23), 22 states have call successors, (23) [2023-11-06 23:05:43,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 201 transitions. [2023-11-06 23:05:43,409 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 201 transitions. Word has length 202 [2023-11-06 23:05:43,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:05:43,409 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 201 transitions. [2023-11-06 23:05:43,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 7.277777777777778) internal successors, (131), 18 states have internal predecessors, (131), 12 states have call successors, (24), 3 states have call predecessors, (24), 7 states have return successors, (24), 12 states have call predecessors, (24), 11 states have call successors, (24) [2023-11-06 23:05:43,410 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 201 transitions. [2023-11-06 23:05:43,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2023-11-06 23:05:43,413 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:05:43,413 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 10, 10, 10, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 1, 1, 1, 1, 1] [2023-11-06 23:05:43,423 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-11-06 23:05:43,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-06 23:05:43,619 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-06 23:05:43,619 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:43,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1932734744, now seen corresponding path program 3 times [2023-11-06 23:05:43,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:43,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566945785] [2023-11-06 23:05:43,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:43,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:43,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:43,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 23:05:43,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:43,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:43,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:43,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:43,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:43,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:43,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:43,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:43,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:43,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 23:05:43,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:43,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-06 23:05:43,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:43,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-06 23:05:43,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:43,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:43,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:43,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 23:05:43,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:43,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-06 23:05:43,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:43,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:43,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:43,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:43,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:43,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 23:05:43,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:43,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-06 23:05:43,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:43,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-11-06 23:05:43,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:43,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:43,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:44,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:44,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:44,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:44,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:44,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 23:05:44,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:44,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-06 23:05:44,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:44,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-06 23:05:44,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:44,103 INFO L134 CoverageAnalysis]: Checked inductivity of 799 backedges. 246 proven. 62 refuted. 0 times theorem prover too weak. 491 trivial. 0 not checked. [2023-11-06 23:05:44,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:44,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566945785] [2023-11-06 23:05:44,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566945785] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:05:44,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193976237] [2023-11-06 23:05:44,104 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-06 23:05:44,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:44,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:44,108 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:05:44,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-06 23:05:44,222 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-06 23:05:44,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:05:44,224 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 23:05:44,228 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:05:44,315 INFO L134 CoverageAnalysis]: Checked inductivity of 799 backedges. 210 proven. 7 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2023-11-06 23:05:44,316 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:05:44,748 INFO L134 CoverageAnalysis]: Checked inductivity of 799 backedges. 210 proven. 7 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2023-11-06 23:05:44,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193976237] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:05:44,749 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:05:44,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 9] total 21 [2023-11-06 23:05:44,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126565319] [2023-11-06 23:05:44,750 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:05:44,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-06 23:05:44,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:44,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-06 23:05:44,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2023-11-06 23:05:44,752 INFO L87 Difference]: Start difference. First operand 191 states and 201 transitions. Second operand has 21 states, 20 states have (on average 5.15) internal successors, (103), 20 states have internal predecessors, (103), 9 states have call successors, (17), 2 states have call predecessors, (17), 6 states have return successors, (17), 10 states have call predecessors, (17), 8 states have call successors, (17) [2023-11-06 23:05:44,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:05:44,953 INFO L93 Difference]: Finished difference Result 206 states and 214 transitions. [2023-11-06 23:05:44,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 23:05:44,953 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 5.15) internal successors, (103), 20 states have internal predecessors, (103), 9 states have call successors, (17), 2 states have call predecessors, (17), 6 states have return successors, (17), 10 states have call predecessors, (17), 8 states have call successors, (17) Word has length 222 [2023-11-06 23:05:44,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:05:44,955 INFO L225 Difference]: With dead ends: 206 [2023-11-06 23:05:44,955 INFO L226 Difference]: Without dead ends: 193 [2023-11-06 23:05:44,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 503 GetRequests, 477 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2023-11-06 23:05:44,956 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 75 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 23:05:44,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 213 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 23:05:44,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2023-11-06 23:05:44,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 191. [2023-11-06 23:05:44,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 151 states have (on average 1.0132450331125828) internal successors, (153), 152 states have internal predecessors, (153), 23 states have call successors, (23), 16 states have call predecessors, (23), 16 states have return successors, (23), 22 states have call predecessors, (23), 22 states have call successors, (23) [2023-11-06 23:05:44,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 199 transitions. [2023-11-06 23:05:44,970 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 199 transitions. Word has length 222 [2023-11-06 23:05:44,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:05:44,971 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 199 transitions. [2023-11-06 23:05:44,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 5.15) internal successors, (103), 20 states have internal predecessors, (103), 9 states have call successors, (17), 2 states have call predecessors, (17), 6 states have return successors, (17), 10 states have call predecessors, (17), 8 states have call successors, (17) [2023-11-06 23:05:44,972 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 199 transitions. [2023-11-06 23:05:44,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2023-11-06 23:05:44,975 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:05:44,975 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 10, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 3, 3, 1, 1, 1, 1] [2023-11-06 23:05:44,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-06 23:05:45,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:45,182 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-06 23:05:45,182 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:45,182 INFO L85 PathProgramCache]: Analyzing trace with hash 2089017107, now seen corresponding path program 4 times [2023-11-06 23:05:45,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:45,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3734872] [2023-11-06 23:05:45,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:45,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:45,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:45,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 23:05:45,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:45,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:45,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:45,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:45,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:45,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:45,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:45,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:45,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:45,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 23:05:45,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:45,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-06 23:05:45,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:45,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-06 23:05:45,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:45,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:45,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:45,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 23:05:45,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:45,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-06 23:05:45,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:45,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:45,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:45,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:45,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:45,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 23:05:45,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:45,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-06 23:05:45,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:45,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-11-06 23:05:45,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:45,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:45,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:45,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:45,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:45,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:45,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:45,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 23:05:45,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:45,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-06 23:05:45,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:45,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-06 23:05:45,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:45,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:45,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:45,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-06 23:05:45,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:45,480 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 155 proven. 3 refuted. 0 times theorem prover too weak. 775 trivial. 0 not checked. [2023-11-06 23:05:45,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:45,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3734872] [2023-11-06 23:05:45,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3734872] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:05:45,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007750032] [2023-11-06 23:05:45,481 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-06 23:05:45,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:45,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:45,484 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:05:45,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-06 23:05:45,623 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-06 23:05:45,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:05:45,625 INFO L262 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 23:05:45,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:05:45,770 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 215 proven. 69 refuted. 0 times theorem prover too weak. 649 trivial. 0 not checked. [2023-11-06 23:05:45,770 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:05:46,297 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 215 proven. 70 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2023-11-06 23:05:46,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007750032] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:05:46,298 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:05:46,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 11] total 16 [2023-11-06 23:05:46,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109876804] [2023-11-06 23:05:46,299 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:05:46,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-06 23:05:46,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:46,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-06 23:05:46,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2023-11-06 23:05:46,302 INFO L87 Difference]: Start difference. First operand 191 states and 199 transitions. Second operand has 16 states, 15 states have (on average 6.533333333333333) internal successors, (98), 15 states have internal predecessors, (98), 10 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (17), 7 states have call predecessors, (17), 9 states have call successors, (17) [2023-11-06 23:05:46,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:05:46,619 INFO L93 Difference]: Finished difference Result 216 states and 224 transitions. [2023-11-06 23:05:46,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 23:05:46,620 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 6.533333333333333) internal successors, (98), 15 states have internal predecessors, (98), 10 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (17), 7 states have call predecessors, (17), 9 states have call successors, (17) Word has length 240 [2023-11-06 23:05:46,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:05:46,622 INFO L225 Difference]: With dead ends: 216 [2023-11-06 23:05:46,622 INFO L226 Difference]: Without dead ends: 191 [2023-11-06 23:05:46,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 542 GetRequests, 515 SyntacticMatches, 6 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=410, Unknown=0, NotChecked=0, Total=506 [2023-11-06 23:05:46,623 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 69 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 23:05:46,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 253 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 23:05:46,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2023-11-06 23:05:46,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 189. [2023-11-06 23:05:46,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 150 states have (on average 1.0066666666666666) internal successors, (151), 150 states have internal predecessors, (151), 23 states have call successors, (23), 16 states have call predecessors, (23), 15 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2023-11-06 23:05:46,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 196 transitions. [2023-11-06 23:05:46,637 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 196 transitions. Word has length 240 [2023-11-06 23:05:46,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:05:46,638 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 196 transitions. [2023-11-06 23:05:46,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 6.533333333333333) internal successors, (98), 15 states have internal predecessors, (98), 10 states have call successors, (17), 2 states have call predecessors, (17), 5 states have return successors, (17), 7 states have call predecessors, (17), 9 states have call successors, (17) [2023-11-06 23:05:46,639 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 196 transitions. [2023-11-06 23:05:46,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2023-11-06 23:05:46,642 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 23:05:46,642 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 3, 2, 1, 1, 1, 1] [2023-11-06 23:05:46,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-06 23:05:46,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:46,849 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-06 23:05:46,849 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 23:05:46,850 INFO L85 PathProgramCache]: Analyzing trace with hash -1967493030, now seen corresponding path program 5 times [2023-11-06 23:05:46,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 23:05:46,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561408242] [2023-11-06 23:05:46,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 23:05:46,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 23:05:46,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:47,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 23:05:47,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:47,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:47,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:47,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:47,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:48,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:48,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:48,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:48,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:48,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 23:05:48,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:48,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-06 23:05:48,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:48,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-06 23:05:48,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:48,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:48,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:48,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 23:05:48,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:48,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-06 23:05:48,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:48,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:48,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:48,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:48,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:48,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 23:05:48,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:48,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-06 23:05:48,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:48,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2023-11-06 23:05:48,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:48,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:48,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:48,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:48,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:48,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:48,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:48,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 23:05:48,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:48,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-06 23:05:48,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:48,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-06 23:05:48,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:48,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 23:05:48,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:48,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 23:05:48,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 23:05:48,567 INFO L134 CoverageAnalysis]: Checked inductivity of 942 backedges. 148 proven. 181 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2023-11-06 23:05:48,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 23:05:48,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561408242] [2023-11-06 23:05:48,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561408242] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 23:05:48,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1791309256] [2023-11-06 23:05:48,568 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-06 23:05:48,568 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:48,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 23:05:48,572 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 23:05:48,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-06 23:05:48,739 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2023-11-06 23:05:48,740 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 23:05:48,743 INFO L262 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 49 conjunts are in the unsatisfiable core [2023-11-06 23:05:48,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 23:05:49,183 INFO L134 CoverageAnalysis]: Checked inductivity of 942 backedges. 148 proven. 181 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2023-11-06 23:05:49,183 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 23:05:53,134 INFO L134 CoverageAnalysis]: Checked inductivity of 942 backedges. 218 proven. 160 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked. [2023-11-06 23:05:53,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1791309256] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 23:05:53,135 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 23:05:53,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 29] total 47 [2023-11-06 23:05:53,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850956105] [2023-11-06 23:05:53,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 23:05:53,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2023-11-06 23:05:53,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 23:05:53,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2023-11-06 23:05:53,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=287, Invalid=1969, Unknown=0, NotChecked=0, Total=2256 [2023-11-06 23:05:53,139 INFO L87 Difference]: Start difference. First operand 189 states and 196 transitions. Second operand has 48 states, 47 states have (on average 2.702127659574468) internal successors, (127), 48 states have internal predecessors, (127), 12 states have call successors, (14), 1 states have call predecessors, (14), 14 states have return successors, (32), 32 states have call predecessors, (32), 12 states have call successors, (32) [2023-11-06 23:05:53,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 23:05:53,303 INFO L93 Difference]: Finished difference Result 189 states and 196 transitions. [2023-11-06 23:05:53,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-06 23:05:53,304 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.702127659574468) internal successors, (127), 48 states have internal predecessors, (127), 12 states have call successors, (14), 1 states have call predecessors, (14), 14 states have return successors, (32), 32 states have call predecessors, (32), 12 states have call successors, (32) Word has length 241 [2023-11-06 23:05:53,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 23:05:53,305 INFO L225 Difference]: With dead ends: 189 [2023-11-06 23:05:53,305 INFO L226 Difference]: Without dead ends: 0 [2023-11-06 23:05:53,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 498 SyntacticMatches, 33 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2101 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=287, Invalid=1969, Unknown=0, NotChecked=0, Total=2256 [2023-11-06 23:05:53,308 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 23:05:53,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 595 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 23:05:53,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-06 23:05:53,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-06 23:05:53,309 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) [2023-11-06 23:05:53,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-06 23:05:53,309 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 241 [2023-11-06 23:05:53,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 23:05:53,309 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 23:05:53,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.702127659574468) internal successors, (127), 48 states have internal predecessors, (127), 12 states have call successors, (14), 1 states have call predecessors, (14), 14 states have return successors, (32), 32 states have call predecessors, (32), 12 states have call successors, (32) [2023-11-06 23:05:53,310 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-06 23:05:53,310 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-06 23:05:53,314 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 12 remaining) [2023-11-06 23:05:53,315 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2023-11-06 23:05:53,315 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2023-11-06 23:05:53,316 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2023-11-06 23:05:53,316 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining) [2023-11-06 23:05:53,316 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 12 remaining) [2023-11-06 23:05:53,316 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 12 remaining) [2023-11-06 23:05:53,317 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 12 remaining) [2023-11-06 23:05:53,317 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2023-11-06 23:05:53,317 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2023-11-06 23:05:53,318 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2023-11-06 23:05:53,318 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2023-11-06 23:05:53,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-06 23:05:53,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 23:05:53,526 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-06 23:05:54,803 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-06 23:05:54,803 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-11-06 23:05:54,803 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-11-06 23:05:54,803 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-06 23:05:54,803 INFO L899 garLoopResultBuilder]: For program point L41(line 41) no Hoare annotation was computed. [2023-11-06 23:05:54,803 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 37 44) the Hoare annotation is: true [2023-11-06 23:05:54,804 INFO L899 garLoopResultBuilder]: For program point L40(lines 40 42) no Hoare annotation was computed. [2023-11-06 23:05:54,804 INFO L895 garLoopResultBuilder]: At program point L39(line 39) the Hoare annotation is: (= 6 |ULTIMATE.start_main_~x~0#1|) [2023-11-06 23:05:54,804 INFO L899 garLoopResultBuilder]: For program point L39-1(line 39) no Hoare annotation was computed. [2023-11-06 23:05:54,804 INFO L899 garLoopResultBuilder]: For program point L40-2(lines 40 42) no Hoare annotation was computed. [2023-11-06 23:05:54,804 INFO L899 garLoopResultBuilder]: For program point L4(line 4) no Hoare annotation was computed. [2023-11-06 23:05:54,804 INFO L899 garLoopResultBuilder]: For program point fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2023-11-06 23:05:54,804 INFO L899 garLoopResultBuilder]: For program point L25(line 25) no Hoare annotation was computed. [2023-11-06 23:05:54,804 INFO L899 garLoopResultBuilder]: For program point fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2023-11-06 23:05:54,804 INFO L899 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2023-11-06 23:05:54,805 INFO L895 garLoopResultBuilder]: At program point L25-2(line 25) the Hoare annotation is: (and (or (< |fibo2_#in~n| 5) (< 5 |fibo2_#in~n|) (= fibo2_~n 5)) (or (<= 5 |fibo2_#in~n|) (= fibo2_~n |fibo2_#in~n|)) (< 1 |fibo2_#in~n|)) [2023-11-06 23:05:54,805 INFO L899 garLoopResultBuilder]: For program point L25-3(line 25) no Hoare annotation was computed. [2023-11-06 23:05:54,805 INFO L899 garLoopResultBuilder]: For program point L25-4(line 25) no Hoare annotation was computed. [2023-11-06 23:05:54,805 INFO L899 garLoopResultBuilder]: For program point L25-5(line 25) no Hoare annotation was computed. [2023-11-06 23:05:54,805 INFO L895 garLoopResultBuilder]: At program point L25-6(line 25) the Hoare annotation is: (let ((.cse0 (<= 1 |fibo2_#t~ret6|))) (and (or (<= 3 |fibo2_#in~n|) (= 2 |fibo2_#in~n|)) (or (<= 5 |fibo2_#in~n|) (and (= fibo2_~n |fibo2_#in~n|) (<= |fibo2_#t~ret6| 2) .cse0)) (or (< |fibo2_#in~n| 5) (< 5 |fibo2_#in~n|) (and (<= |fibo2_#t~ret6| 3) .cse0 (= fibo2_~n 5))) (or (= |fibo2_#t~ret6| 1) (< 3 |fibo2_#in~n|)))) [2023-11-06 23:05:54,806 INFO L899 garLoopResultBuilder]: For program point L25-7(line 25) no Hoare annotation was computed. [2023-11-06 23:05:54,806 INFO L899 garLoopResultBuilder]: For program point L25-8(line 25) no Hoare annotation was computed. [2023-11-06 23:05:54,806 INFO L899 garLoopResultBuilder]: For program point L25-9(line 25) no Hoare annotation was computed. [2023-11-06 23:05:54,806 INFO L899 garLoopResultBuilder]: For program point fibo2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2023-11-06 23:05:54,806 INFO L899 garLoopResultBuilder]: For program point fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2023-11-06 23:05:54,806 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 19 27) the Hoare annotation is: true [2023-11-06 23:05:54,806 INFO L899 garLoopResultBuilder]: For program point fibo2EXIT(lines 19 27) no Hoare annotation was computed. [2023-11-06 23:05:54,806 INFO L899 garLoopResultBuilder]: For program point fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2023-11-06 23:05:54,806 INFO L899 garLoopResultBuilder]: For program point L22(lines 22 26) no Hoare annotation was computed. [2023-11-06 23:05:54,806 INFO L899 garLoopResultBuilder]: For program point L20(lines 20 26) no Hoare annotation was computed. [2023-11-06 23:05:54,807 INFO L899 garLoopResultBuilder]: For program point fibo2FINAL(lines 19 27) no Hoare annotation was computed. [2023-11-06 23:05:54,807 INFO L899 garLoopResultBuilder]: For program point fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2023-11-06 23:05:54,808 INFO L899 garLoopResultBuilder]: For program point fibo1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2023-11-06 23:05:54,808 INFO L899 garLoopResultBuilder]: For program point fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2023-11-06 23:05:54,808 INFO L899 garLoopResultBuilder]: For program point L15(line 15) no Hoare annotation was computed. [2023-11-06 23:05:54,808 INFO L899 garLoopResultBuilder]: For program point L15-1(line 15) no Hoare annotation was computed. [2023-11-06 23:05:54,809 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 (= fibo1_~n 2) (< 2 |fibo1_#in~n|)) (or (< |fibo1_#in~n| 6) (= fibo1_~n 6) (< 6 |fibo1_#in~n|)) (or (<= 4 |fibo1_#in~n|) (= fibo1_~n |fibo1_#in~n|))) [2023-11-06 23:05:54,809 INFO L899 garLoopResultBuilder]: For program point L15-3(line 15) no Hoare annotation was computed. [2023-11-06 23:05:54,809 INFO L899 garLoopResultBuilder]: For program point L15-4(line 15) no Hoare annotation was computed. [2023-11-06 23:05:54,809 INFO L899 garLoopResultBuilder]: For program point fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2023-11-06 23:05:54,809 INFO L899 garLoopResultBuilder]: For program point fibo1FINAL(lines 9 17) no Hoare annotation was computed. [2023-11-06 23:05:54,809 INFO L899 garLoopResultBuilder]: For program point L15-5(line 15) no Hoare annotation was computed. [2023-11-06 23:05:54,810 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 9 17) the Hoare annotation is: true [2023-11-06 23:05:54,810 INFO L895 garLoopResultBuilder]: At program point L15-6(line 15) the Hoare annotation is: (and (or (= fibo1_~n 2) (< 2 |fibo1_#in~n|)) (or (< |fibo1_#in~n| 6) (and (<= |fibo1_#t~ret4| 5) (<= 2 |fibo1_#t~ret4|) (= fibo1_~n 6)) (< 6 |fibo1_#in~n|)) (or (< |fibo1_#in~n| 4) (< 4 |fibo1_#in~n|) (and (= 2 |fibo1_#t~ret4|) (= fibo1_~n 4))) (or (<= 4 |fibo1_#in~n|) (and (= |fibo1_#t~ret4| 1) (= fibo1_~n |fibo1_#in~n|)))) [2023-11-06 23:05:54,810 INFO L899 garLoopResultBuilder]: For program point L15-7(line 15) no Hoare annotation was computed. [2023-11-06 23:05:54,810 INFO L899 garLoopResultBuilder]: For program point L15-8(line 15) no Hoare annotation was computed. [2023-11-06 23:05:54,810 INFO L899 garLoopResultBuilder]: For program point L15-9(line 15) no Hoare annotation was computed. [2023-11-06 23:05:54,811 INFO L899 garLoopResultBuilder]: For program point fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2023-11-06 23:05:54,811 INFO L899 garLoopResultBuilder]: For program point fibo1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2023-11-06 23:05:54,811 INFO L899 garLoopResultBuilder]: For program point fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2023-11-06 23:05:54,811 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 16) no Hoare annotation was computed. [2023-11-06 23:05:54,811 INFO L899 garLoopResultBuilder]: For program point L10(lines 10 16) no Hoare annotation was computed. [2023-11-06 23:05:54,811 INFO L899 garLoopResultBuilder]: For program point fibo1EXIT(lines 9 17) no Hoare annotation was computed. [2023-11-06 23:05:54,815 INFO L445 BasicCegarLoop]: Path program histogram: [5, 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] [2023-11-06 23:05:54,817 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 23:05:54,827 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 11:05:54 BoogieIcfgContainer [2023-11-06 23:05:54,827 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 23:05:54,828 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 23:05:54,828 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 23:05:54,828 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 23:05:54,829 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 11:05:14" (3/4) ... [2023-11-06 23:05:54,831 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 23:05:54,836 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo2 [2023-11-06 23:05:54,836 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo1 [2023-11-06 23:05:54,841 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2023-11-06 23:05:54,842 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-06 23:05:54,842 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 23:05:54,842 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 23:05:54,895 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 23:05:54,895 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 23:05:54,895 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 23:05:54,896 INFO L158 Benchmark]: Toolchain (without parser) took 41510.36ms. Allocated memory was 138.4MB in the beginning and 371.2MB in the end (delta: 232.8MB). Free memory was 98.6MB in the beginning and 180.4MB in the end (delta: -81.8MB). Peak memory consumption was 151.7MB. Max. memory is 16.1GB. [2023-11-06 23:05:54,896 INFO L158 Benchmark]: CDTParser took 0.34ms. Allocated memory is still 102.8MB. Free memory was 77.7MB in the beginning and 77.6MB in the end (delta: 91.0kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 23:05:54,897 INFO L158 Benchmark]: CACSL2BoogieTranslator took 262.15ms. Allocated memory is still 138.4MB. Free memory was 98.0MB in the beginning and 88.0MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 23:05:54,897 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.69ms. Allocated memory is still 138.4MB. Free memory was 88.0MB in the beginning and 86.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 23:05:54,897 INFO L158 Benchmark]: Boogie Preprocessor took 22.78ms. Allocated memory is still 138.4MB. Free memory was 86.7MB in the beginning and 85.9MB in the end (delta: 765.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 23:05:54,898 INFO L158 Benchmark]: RCFGBuilder took 411.66ms. Allocated memory is still 138.4MB. Free memory was 85.9MB in the beginning and 74.3MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 23:05:54,898 INFO L158 Benchmark]: TraceAbstraction took 40700.95ms. Allocated memory was 138.4MB in the beginning and 371.2MB in the end (delta: 232.8MB). Free memory was 73.5MB in the beginning and 183.5MB in the end (delta: -110.0MB). Peak memory consumption was 149.6MB. Max. memory is 16.1GB. [2023-11-06 23:05:54,899 INFO L158 Benchmark]: Witness Printer took 67.76ms. Allocated memory is still 371.2MB. Free memory was 183.5MB in the beginning and 180.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 23:05:54,900 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 102.8MB. Free memory was 77.7MB in the beginning and 77.6MB in the end (delta: 91.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 262.15ms. Allocated memory is still 138.4MB. Free memory was 98.0MB in the beginning and 88.0MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.69ms. Allocated memory is still 138.4MB. Free memory was 88.0MB in the beginning and 86.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 22.78ms. Allocated memory is still 138.4MB. Free memory was 86.7MB in the beginning and 85.9MB in the end (delta: 765.4kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 411.66ms. Allocated memory is still 138.4MB. Free memory was 85.9MB in the beginning and 74.3MB in the end (delta: 11.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 40700.95ms. Allocated memory was 138.4MB in the beginning and 371.2MB in the end (delta: 232.8MB). Free memory was 73.5MB in the beginning and 183.5MB in the end (delta: -110.0MB). Peak memory consumption was 149.6MB. Max. memory is 16.1GB. * Witness Printer took 67.76ms. Allocated memory is still 371.2MB. Free memory was 183.5MB in the beginning and 180.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. 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: 40.6s, OverallIterations: 32, TraceHistogramMax: 13, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.1s, AutomataDifference: 9.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2358 SdHoareTripleChecker+Valid, 5.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2293 mSDsluCounter, 9272 SdHoareTripleChecker+Invalid, 4.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8082 mSDsCounter, 564 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8270 IncrementalHoareTripleChecker+Invalid, 8834 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 564 mSolverCounterUnsat, 1190 mSDtfsCounter, 8270 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4862 GetRequests, 4116 SyntacticMatches, 157 SemanticMatches, 589 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6534 ImplicationChecksByTransitivity, 8.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=290occurred in iteration=19, InterpolantAutomatonStates: 425, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 32 MinimizatonAttempts, 446 StatesRemovedByMinimization, 30 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 689 PreInvPairs, 834 NumberOfFragments, 158 HoareAnnotationTreeSize, 689 FomulaSimplifications, 15111 FormulaSimplificationTreeSizeReduction, 0.6s HoareSimplificationTime, 8 FomulaSimplificationsInter, 1401 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 22.3s InterpolantComputationTime, 4535 NumberOfCodeBlocks, 4292 NumberOfCodeBlocksAsserted, 68 NumberOfCheckSat, 6386 ConstructedInterpolants, 0 QuantifiedInterpolants, 12398 SizeOfPredicates, 62 NumberOfNonLiveVariables, 3811 ConjunctsInSsa, 285 ConjunctsInUnsatCore, 70 InterpolantComputations, 15 PerfectInterpolantSequences, 12158/14222 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 - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2023-11-06 23:05:54,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c936b6b3-94f1-48b9-8245-07d0da8115b0/bin/uautomizer-verify-WvqO1wxjHP/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