./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.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_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/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_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/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_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/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 24cc882af4ec42ba94c424c5a1ed92d402543c0fe2bf17d3fca0ca1cd73500b7 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:52:50,952 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:52:51,078 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 22:52:51,087 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:52:51,088 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:52:51,131 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:52:51,134 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:52:51,135 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:52:51,136 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:52:51,141 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:52:51,142 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:52:51,143 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:52:51,143 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:52:51,145 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:52:51,146 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:52:51,146 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:52:51,146 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:52:51,147 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:52:51,147 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:52:51,148 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:52:51,148 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:52:51,149 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:52:51,149 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 22:52:51,151 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:52:51,152 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:52:51,152 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:52:51,152 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:52:51,153 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:52:51,154 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:52:51,154 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:52:51,155 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:52:51,156 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:52:51,156 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:52:51,156 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:52:51,157 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:52:51,157 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:52:51,157 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:52:51,157 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:52:51,158 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:52:51,158 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:52:51,158 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:52:51,159 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_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 24cc882af4ec42ba94c424c5a1ed92d402543c0fe2bf17d3fca0ca1cd73500b7 [2023-11-06 22:52:51,499 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:52:51,542 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:52:51,545 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:52:51,546 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:52:51,547 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:52:51,548 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c [2023-11-06 22:52:54,673 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:52:54,858 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:52:54,859 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c [2023-11-06 22:52:54,867 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/data/0f39fd3d4/32eff1baf97c4c77a5cbaac39d723469/FLAGe92f66f99 [2023-11-06 22:52:54,881 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/data/0f39fd3d4/32eff1baf97c4c77a5cbaac39d723469 [2023-11-06 22:52:54,884 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:52:54,886 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:52:54,887 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:52:54,888 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:52:54,893 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:52:54,894 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:52:54" (1/1) ... [2023-11-06 22:52:54,895 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10cb7889 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:52:54, skipping insertion in model container [2023-11-06 22:52:54,898 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:52:54" (1/1) ... [2023-11-06 22:52:54,918 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:52:55,100 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:52:55,113 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:52:55,142 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:52:55,157 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:52:55,158 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:52:55 WrapperNode [2023-11-06 22:52:55,158 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:52:55,159 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:52:55,159 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:52:55,160 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:52:55,168 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:52:55" (1/1) ... [2023-11-06 22:52:55,175 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:52:55" (1/1) ... [2023-11-06 22:52:55,195 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 21 [2023-11-06 22:52:55,195 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:52:55,196 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:52:55,196 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:52:55,196 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:52:55,206 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:52:55" (1/1) ... [2023-11-06 22:52:55,206 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:52:55" (1/1) ... [2023-11-06 22:52:55,210 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:52:55" (1/1) ... [2023-11-06 22:52:55,217 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:52:55" (1/1) ... [2023-11-06 22:52:55,220 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:52:55" (1/1) ... [2023-11-06 22:52:55,223 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:52:55" (1/1) ... [2023-11-06 22:52:55,224 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:52:55" (1/1) ... [2023-11-06 22:52:55,225 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:52:55" (1/1) ... [2023-11-06 22:52:55,227 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:52:55,228 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:52:55,228 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:52:55,228 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:52:55,229 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:52:55" (1/1) ... [2023-11-06 22:52:55,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:52:55,256 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:52:55,275 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:52:55,282 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:52:55,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:52:55,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:52:55,311 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2023-11-06 22:52:55,312 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2023-11-06 22:52:55,312 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2023-11-06 22:52:55,312 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2023-11-06 22:52:55,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:52:55,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:52:55,381 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:52:55,383 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:52:55,576 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:52:55,587 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:52:55,587 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-06 22:52:55,589 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:52:55 BoogieIcfgContainer [2023-11-06 22:52:55,589 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:52:55,593 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:52:55,593 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:52:55,596 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:52:55,596 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:52:54" (1/3) ... [2023-11-06 22:52:55,597 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cf02474 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:52:55, skipping insertion in model container [2023-11-06 22:52:55,597 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:52:55" (2/3) ... [2023-11-06 22:52:55,598 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cf02474 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:52:55, skipping insertion in model container [2023-11-06 22:52:55,598 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:52:55" (3/3) ... [2023-11-06 22:52:55,603 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_5-1.c [2023-11-06 22:52:55,627 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:52:55,628 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-06 22:52:55,685 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:52:55,691 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;@7bdb3ffb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:52:55,692 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-11-06 22:52:55,695 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 22:52:55,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-06 22:52:55,702 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:52:55,703 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:52:55,703 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-06 22:52:55,708 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:52:55,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1867028009, now seen corresponding path program 1 times [2023-11-06 22:52:55,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:52:55,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352094757] [2023-11-06 22:52:55,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:52:55,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:52:55,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:52:56,006 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 22:52:56,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:52:56,009 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352094757] [2023-11-06 22:52:56,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352094757] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:52:56,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:52:56,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:52:56,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732648734] [2023-11-06 22:52:56,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:52:56,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:52:56,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:52:56,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:52:56,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:52:56,075 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 22:52:56,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:52:56,159 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2023-11-06 22:52:56,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:52:56,162 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 22:52:56,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:52:56,172 INFO L225 Difference]: With dead ends: 59 [2023-11-06 22:52:56,173 INFO L226 Difference]: Without dead ends: 45 [2023-11-06 22:52:56,177 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 22:52:56,182 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 14 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:52:56,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 92 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:52:56,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2023-11-06 22:52:56,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2023-11-06 22:52:56,234 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 22:52:56,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2023-11-06 22:52:56,239 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 7 [2023-11-06 22:52:56,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:52:56,239 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2023-11-06 22:52:56,240 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 22:52:56,241 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2023-11-06 22:52:56,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-06 22:52:56,242 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:52:56,242 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:52:56,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:52:56,244 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-06 22:52:56,245 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:52:56,245 INFO L85 PathProgramCache]: Analyzing trace with hash 2043293518, now seen corresponding path program 1 times [2023-11-06 22:52:56,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:52:56,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852681879] [2023-11-06 22:52:56,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:52:56,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:52:56,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:52:56,347 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 22:52:56,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:52:56,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852681879] [2023-11-06 22:52:56,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852681879] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:52:56,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:52:56,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:52:56,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84982784] [2023-11-06 22:52:56,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:52:56,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:52:56,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:52:56,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:52:56,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:52:56,352 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 22:52:56,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:52:56,430 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2023-11-06 22:52:56,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:52:56,431 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 22:52:56,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:52:56,433 INFO L225 Difference]: With dead ends: 64 [2023-11-06 22:52:56,433 INFO L226 Difference]: Without dead ends: 60 [2023-11-06 22:52:56,434 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 22:52:56,435 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, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:52:56,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 162 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:52:56,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-11-06 22:52:56,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 56. [2023-11-06 22:52:56,447 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 22:52:56,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2023-11-06 22:52:56,450 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 8 [2023-11-06 22:52:56,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:52:56,450 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2023-11-06 22:52:56,451 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 22:52:56,451 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2023-11-06 22:52:56,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-06 22:52:56,452 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:52:56,452 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:52:56,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:52:56,453 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-06 22:52:56,453 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:52:56,454 INFO L85 PathProgramCache]: Analyzing trace with hash -749725533, now seen corresponding path program 1 times [2023-11-06 22:52:56,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:52:56,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946891794] [2023-11-06 22:52:56,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:52:56,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:52:56,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:52:56,500 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 22:52:56,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:52:56,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946891794] [2023-11-06 22:52:56,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946891794] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:52:56,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:52:56,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:52:56,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396220353] [2023-11-06 22:52:56,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:52:56,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:52:56,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:52:56,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:52:56,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:52:56,505 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 22:52:56,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:52:56,529 INFO L93 Difference]: Finished difference Result 58 states and 70 transitions. [2023-11-06 22:52:56,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:52:56,530 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 22:52:56,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:52:56,532 INFO L225 Difference]: With dead ends: 58 [2023-11-06 22:52:56,532 INFO L226 Difference]: Without dead ends: 56 [2023-11-06 22:52:56,533 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 22:52:56,535 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 22:52:56,536 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 22:52:56,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2023-11-06 22:52:56,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2023-11-06 22:52:56,546 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 22:52:56,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2023-11-06 22:52:56,549 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 13 [2023-11-06 22:52:56,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:52:56,550 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2023-11-06 22:52:56,550 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 22:52:56,550 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2023-11-06 22:52:56,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-06 22:52:56,551 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:52:56,551 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:52:56,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:52:56,552 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-06 22:52:56,553 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:52:56,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1766654982, now seen corresponding path program 1 times [2023-11-06 22:52:56,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:52:56,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748801046] [2023-11-06 22:52:56,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:52:56,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:52:56,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:52:56,661 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 22:52:56,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:52:56,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748801046] [2023-11-06 22:52:56,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748801046] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:52:56,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:52:56,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-06 22:52:56,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530271034] [2023-11-06 22:52:56,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:52:56,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:52:56,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:52:56,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:52:56,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-06 22:52:56,665 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 22:52:56,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:52:56,786 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2023-11-06 22:52:56,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:52:56,787 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 22:52:56,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:52:56,788 INFO L225 Difference]: With dead ends: 54 [2023-11-06 22:52:56,789 INFO L226 Difference]: Without dead ends: 50 [2023-11-06 22:52:56,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:52:56,791 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 22:52:56,791 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 22:52:56,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2023-11-06 22:52:56,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2023-11-06 22:52:56,800 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 22:52:56,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2023-11-06 22:52:56,802 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 14 [2023-11-06 22:52:56,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:52:56,802 INFO L495 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2023-11-06 22:52:56,803 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 22:52:56,803 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2023-11-06 22:52:56,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-06 22:52:56,804 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:52:56,804 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 22:52:56,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:52:56,805 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-06 22:52:56,805 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:52:56,806 INFO L85 PathProgramCache]: Analyzing trace with hash 2097999453, now seen corresponding path program 1 times [2023-11-06 22:52:56,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:52:56,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577019531] [2023-11-06 22:52:56,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:52:56,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:52:56,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:52:56,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 22:52:56,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:52:57,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-06 22:52:57,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:52:57,057 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 22:52:57,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:52:57,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577019531] [2023-11-06 22:52:57,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [577019531] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:52:57,058 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:52:57,058 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:52:57,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529900074] [2023-11-06 22:52:57,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:52:57,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:52:57,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:52:57,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:52:57,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:52:57,061 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 22:52:57,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:52:57,123 INFO L93 Difference]: Finished difference Result 76 states and 94 transitions. [2023-11-06 22:52:57,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:52:57,124 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 22:52:57,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:52:57,128 INFO L225 Difference]: With dead ends: 76 [2023-11-06 22:52:57,128 INFO L226 Difference]: Without dead ends: 71 [2023-11-06 22:52:57,129 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 22:52:57,134 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 22:52:57,135 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 22:52:57,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2023-11-06 22:52:57,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 63. [2023-11-06 22:52:57,158 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 22:52:57,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 78 transitions. [2023-11-06 22:52:57,160 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 78 transitions. Word has length 23 [2023-11-06 22:52:57,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:52:57,160 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 78 transitions. [2023-11-06 22:52:57,161 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 22:52:57,161 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 78 transitions. [2023-11-06 22:52:57,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-06 22:52:57,163 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:52:57,164 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 22:52:57,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:52:57,165 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-06 22:52:57,165 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:52:57,165 INFO L85 PathProgramCache]: Analyzing trace with hash 624421350, now seen corresponding path program 1 times [2023-11-06 22:52:57,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:52:57,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479322264] [2023-11-06 22:52:57,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:52:57,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:52:57,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:52:57,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 22:52:57,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:52:57,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-06 22:52:57,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:52:57,302 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 22:52:57,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:52:57,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479322264] [2023-11-06 22:52:57,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479322264] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:52:57,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696953082] [2023-11-06 22:52:57,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:52:57,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:52:57,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:52:57,307 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:52:57,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-06 22:52:57,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:52:57,372 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-06 22:52:57,378 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:52:57,524 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 22:52:57,531 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:52:57,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696953082] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:52:57,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:52:57,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2023-11-06 22:52:57,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725115578] [2023-11-06 22:52:57,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:52:57,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-06 22:52:57,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:52:57,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-06 22:52:57,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:52:57,536 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 22:52:57,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:52:57,698 INFO L93 Difference]: Finished difference Result 111 states and 134 transitions. [2023-11-06 22:52:57,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-06 22:52:57,699 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 22:52:57,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:52:57,700 INFO L225 Difference]: With dead ends: 111 [2023-11-06 22:52:57,700 INFO L226 Difference]: Without dead ends: 61 [2023-11-06 22:52:57,701 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 22:52:57,702 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 22:52:57,703 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 22:52:57,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2023-11-06 22:52:57,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 59. [2023-11-06 22:52:57,710 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 22:52:57,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 71 transitions. [2023-11-06 22:52:57,711 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 71 transitions. Word has length 24 [2023-11-06 22:52:57,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:52:57,712 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 71 transitions. [2023-11-06 22:52:57,712 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 22:52:57,712 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 71 transitions. [2023-11-06 22:52:57,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-06 22:52:57,714 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:52:57,714 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 22:52:57,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-06 22:52:57,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:52:57,915 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-06 22:52:57,916 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:52:57,916 INFO L85 PathProgramCache]: Analyzing trace with hash 120521327, now seen corresponding path program 1 times [2023-11-06 22:52:57,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:52:57,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443080185] [2023-11-06 22:52:57,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:52:57,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:52:57,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:52:58,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 22:52:58,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:52:58,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-06 22:52:58,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:52:58,055 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 22:52:58,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:52:58,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443080185] [2023-11-06 22:52:58,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443080185] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:52:58,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:52:58,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:52:58,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175882676] [2023-11-06 22:52:58,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:52:58,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:52:58,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:52:58,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:52:58,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:52:58,059 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 22:52:58,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:52:58,112 INFO L93 Difference]: Finished difference Result 85 states and 108 transitions. [2023-11-06 22:52:58,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:52:58,113 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 22:52:58,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:52:58,114 INFO L225 Difference]: With dead ends: 85 [2023-11-06 22:52:58,114 INFO L226 Difference]: Without dead ends: 80 [2023-11-06 22:52:58,115 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 22:52:58,116 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 22:52:58,117 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 22:52:58,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2023-11-06 22:52:58,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 69. [2023-11-06 22:52:58,128 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 22:52:58,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 89 transitions. [2023-11-06 22:52:58,130 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 89 transitions. Word has length 25 [2023-11-06 22:52:58,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:52:58,131 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 89 transitions. [2023-11-06 22:52:58,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-06 22:52:58,131 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 89 transitions. [2023-11-06 22:52:58,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-06 22:52:58,133 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:52:58,133 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:52:58,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:52:58,134 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-06 22:52:58,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:52:58,134 INFO L85 PathProgramCache]: Analyzing trace with hash -473230649, now seen corresponding path program 1 times [2023-11-06 22:52:58,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:52:58,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933672289] [2023-11-06 22:52:58,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:52:58,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:52:58,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:52:58,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:52:58,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:52:58,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-06 22:52:58,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:52:58,220 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 22:52:58,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:52:58,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933672289] [2023-11-06 22:52:58,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933672289] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:52:58,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:52:58,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:52:58,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241291439] [2023-11-06 22:52:58,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:52:58,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:52:58,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:52:58,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:52:58,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:52:58,224 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 22:52:58,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:52:58,265 INFO L93 Difference]: Finished difference Result 85 states and 108 transitions. [2023-11-06 22:52:58,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:52:58,266 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 22:52:58,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:52:58,268 INFO L225 Difference]: With dead ends: 85 [2023-11-06 22:52:58,268 INFO L226 Difference]: Without dead ends: 83 [2023-11-06 22:52:58,268 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 22:52:58,270 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 22:52:58,270 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 22:52:58,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-11-06 22:52:58,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 78. [2023-11-06 22:52:58,280 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 22:52:58,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 101 transitions. [2023-11-06 22:52:58,282 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 101 transitions. Word has length 29 [2023-11-06 22:52:58,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:52:58,283 INFO L495 AbstractCegarLoop]: Abstraction has 78 states and 101 transitions. [2023-11-06 22:52:58,283 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 22:52:58,283 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 101 transitions. [2023-11-06 22:52:58,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-06 22:52:58,285 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:52:58,285 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 22:52:58,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-06 22:52:58,286 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-06 22:52:58,286 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:52:58,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1773385638, now seen corresponding path program 1 times [2023-11-06 22:52:58,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:52:58,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241168671] [2023-11-06 22:52:58,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:52:58,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:52:58,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:52:58,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:52:58,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:52:58,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-06 22:52:58,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:52:58,417 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 22:52:58,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:52:58,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241168671] [2023-11-06 22:52:58,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241168671] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:52:58,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837804635] [2023-11-06 22:52:58,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:52:58,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:52:58,419 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:52:58,424 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:52:58,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-06 22:52:58,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:52:58,477 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:52:58,479 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:52:58,606 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 22:52:58,606 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:52:58,811 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 22:52:58,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837804635] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:52:58,812 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:52:58,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2023-11-06 22:52:58,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882328416] [2023-11-06 22:52:58,813 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:52:58,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-06 22:52:58,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:52:58,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-06 22:52:58,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2023-11-06 22:52:58,816 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 22:52:59,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:52:59,420 INFO L93 Difference]: Finished difference Result 206 states and 275 transitions. [2023-11-06 22:52:59,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-06 22:52:59,421 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 22:52:59,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:52:59,425 INFO L225 Difference]: With dead ends: 206 [2023-11-06 22:52:59,425 INFO L226 Difference]: Without dead ends: 137 [2023-11-06 22:52:59,431 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 22:52:59,433 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 133 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:52:59,435 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 666 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:52:59,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-11-06 22:52:59,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 121. [2023-11-06 22:52:59,470 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, (35), 17 states have call predecessors, (35), 15 states have call successors, (35) [2023-11-06 22:52:59,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 158 transitions. [2023-11-06 22:52:59,477 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 158 transitions. Word has length 30 [2023-11-06 22:52:59,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:52:59,478 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 158 transitions. [2023-11-06 22:52:59,478 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 22:52:59,478 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 158 transitions. [2023-11-06 22:52:59,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-06 22:52:59,487 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:52:59,487 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 22:52:59,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-06 22:52:59,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:52:59,694 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-06 22:52:59,694 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:52:59,695 INFO L85 PathProgramCache]: Analyzing trace with hash -463506674, now seen corresponding path program 2 times [2023-11-06 22:52:59,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:52:59,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390768592] [2023-11-06 22:52:59,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:52:59,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:52:59,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:52:59,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-06 22:52:59,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:52:59,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 22:52:59,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:52:59,845 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 22:52:59,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:52:59,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390768592] [2023-11-06 22:52:59,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390768592] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:52:59,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1699975580] [2023-11-06 22:52:59,846 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:52:59,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:52:59,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:52:59,852 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:52:59,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-06 22:52:59,908 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:52:59,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:52:59,910 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-06 22:52:59,912 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:52:59,961 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 22:52:59,962 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:52:59,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1699975580] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:52:59,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:52:59,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2023-11-06 22:52:59,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280592216] [2023-11-06 22:52:59,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:52:59,963 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:52:59,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:52:59,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:52:59,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-06 22:52:59,965 INFO L87 Difference]: Start difference. First operand 121 states and 158 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 22:52:59,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:52:59,999 INFO L93 Difference]: Finished difference Result 134 states and 175 transitions. [2023-11-06 22:52:59,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:53:00,000 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 22:53:00,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:53:00,001 INFO L225 Difference]: With dead ends: 134 [2023-11-06 22:53:00,002 INFO L226 Difference]: Without dead ends: 133 [2023-11-06 22:53:00,002 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 22:53:00,003 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 22:53:00,003 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 22:53:00,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2023-11-06 22:53:00,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 127. [2023-11-06 22:53:00,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 98 states have (on average 1.153061224489796) internal successors, (113), 100 states have internal predecessors, (113), 16 states have call successors, (16), 6 states have call predecessors, (16), 9 states have return successors, (35), 20 states have call predecessors, (35), 15 states have call successors, (35) [2023-11-06 22:53:00,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 164 transitions. [2023-11-06 22:53:00,019 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 164 transitions. Word has length 42 [2023-11-06 22:53:00,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:53:00,020 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 164 transitions. [2023-11-06 22:53:00,020 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 22:53:00,020 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 164 transitions. [2023-11-06 22:53:00,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2023-11-06 22:53:00,022 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:53:00,022 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 22:53:00,039 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-06 22:53:00,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-06 22:53:00,228 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-06 22:53:00,228 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:00,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1483804933, now seen corresponding path program 1 times [2023-11-06 22:53:00,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:00,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750363097] [2023-11-06 22:53:00,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:00,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:00,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:00,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-06 22:53:00,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:00,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 22:53:00,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:00,332 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 22:53:00,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:53:00,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750363097] [2023-11-06 22:53:00,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750363097] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:53:00,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2041564507] [2023-11-06 22:53:00,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:00,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:53:00,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:53:00,340 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:53:00,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-06 22:53:00,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:00,400 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-06 22:53:00,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:53:00,468 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 22:53:00,468 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-06 22:53:00,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2041564507] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:53:00,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-06 22:53:00,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2023-11-06 22:53:00,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572076461] [2023-11-06 22:53:00,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:53:00,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-06 22:53:00,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:53:00,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-06 22:53:00,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:53:00,471 INFO L87 Difference]: Start difference. First operand 127 states and 164 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 22:53:00,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:53:00,522 INFO L93 Difference]: Finished difference Result 157 states and 203 transitions. [2023-11-06 22:53:00,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-06 22:53:00,522 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 43 [2023-11-06 22:53:00,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:53:00,526 INFO L225 Difference]: With dead ends: 157 [2023-11-06 22:53:00,526 INFO L226 Difference]: Without dead ends: 156 [2023-11-06 22:53:00,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 43 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 22:53:00,529 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 4 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:53:00,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 114 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:53:00,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2023-11-06 22:53:00,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 138. [2023-11-06 22:53:00,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 107 states have (on average 1.1401869158878504) internal successors, (122), 108 states have internal predecessors, (122), 18 states have call successors, (18), 6 states have call predecessors, (18), 9 states have return successors, (41), 23 states have call predecessors, (41), 17 states have call successors, (41) [2023-11-06 22:53:00,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 181 transitions. [2023-11-06 22:53:00,556 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 181 transitions. Word has length 43 [2023-11-06 22:53:00,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:53:00,556 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 181 transitions. [2023-11-06 22:53:00,557 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 22:53:00,557 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 181 transitions. [2023-11-06 22:53:00,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-06 22:53:00,559 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:53:00,559 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:53:00,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-06 22:53:00,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-06 22:53:00,765 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-06 22:53:00,766 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:00,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1614425526, now seen corresponding path program 1 times [2023-11-06 22:53:00,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:00,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333265509] [2023-11-06 22:53:00,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:00,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:00,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:00,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-06 22:53:00,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:00,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 22:53:00,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:00,854 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-06 22:53:00,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:53:00,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333265509] [2023-11-06 22:53:00,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333265509] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:53:00,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:53:00,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:53:00,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479499226] [2023-11-06 22:53:00,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:53:00,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:53:00,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:53:00,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:53:00,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:53:00,857 INFO L87 Difference]: Start difference. First operand 138 states and 181 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 22:53:00,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:53:00,895 INFO L93 Difference]: Finished difference Result 156 states and 202 transitions. [2023-11-06 22:53:00,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:53:00,896 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 44 [2023-11-06 22:53:00,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:53:00,898 INFO L225 Difference]: With dead ends: 156 [2023-11-06 22:53:00,898 INFO L226 Difference]: Without dead ends: 155 [2023-11-06 22:53:00,898 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 22:53:00,899 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 4 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:53:00,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 120 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:53:00,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-11-06 22:53:00,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 134. [2023-11-06 22:53:00,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 104 states have (on average 1.1442307692307692) internal successors, (119), 105 states have internal predecessors, (119), 17 states have call successors, (17), 6 states have call predecessors, (17), 9 states have return successors, (38), 22 states have call predecessors, (38), 16 states have call successors, (38) [2023-11-06 22:53:00,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 174 transitions. [2023-11-06 22:53:00,914 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 174 transitions. Word has length 44 [2023-11-06 22:53:00,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:53:00,914 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 174 transitions. [2023-11-06 22:53:00,915 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 22:53:00,915 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 174 transitions. [2023-11-06 22:53:00,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-06 22:53:00,916 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:53:00,916 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 22:53:00,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-06 22:53:00,917 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-06 22:53:00,917 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:00,917 INFO L85 PathProgramCache]: Analyzing trace with hash 2086948818, now seen corresponding path program 1 times [2023-11-06 22:53:00,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:00,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297493343] [2023-11-06 22:53:00,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:00,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:00,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:00,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 22:53:00,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:00,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-06 22:53:00,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:01,010 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 22:53:01,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:53:01,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297493343] [2023-11-06 22:53:01,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297493343] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:53:01,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066616511] [2023-11-06 22:53:01,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:01,011 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:53:01,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:53:01,012 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:53:01,025 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-06 22:53:01,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:01,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-06 22:53:01,079 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:53:01,321 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:53:01,321 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:53:01,666 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:53:01,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2066616511] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:53:01,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:53:01,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 15, 15] total 31 [2023-11-06 22:53:01,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962567345] [2023-11-06 22:53:01,667 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:53:01,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-11-06 22:53:01,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:53:01,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-11-06 22:53:01,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=825, Unknown=0, NotChecked=0, Total=930 [2023-11-06 22:53:01,670 INFO L87 Difference]: Start difference. First operand 134 states and 174 transitions. Second operand has 31 states, 29 states have (on average 3.0689655172413794) internal successors, (89), 21 states have internal predecessors, (89), 14 states have call successors, (18), 11 states have call predecessors, (18), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-06 22:53:02,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:53:02,394 INFO L93 Difference]: Finished difference Result 298 states and 402 transitions. [2023-11-06 22:53:02,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-06 22:53:02,395 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 3.0689655172413794) internal successors, (89), 21 states have internal predecessors, (89), 14 states have call successors, (18), 11 states have call predecessors, (18), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 48 [2023-11-06 22:53:02,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:53:02,399 INFO L225 Difference]: With dead ends: 298 [2023-11-06 22:53:02,400 INFO L226 Difference]: Without dead ends: 183 [2023-11-06 22:53:02,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 81 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=318, Invalid=1752, Unknown=0, NotChecked=0, Total=2070 [2023-11-06 22:53:02,403 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 381 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:53:02,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 348 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:53:02,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2023-11-06 22:53:02,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 169. [2023-11-06 22:53:02,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 133 states have (on average 1.1353383458646618) internal successors, (151), 132 states have internal predecessors, (151), 21 states have call successors, (21), 8 states have call predecessors, (21), 11 states have return successors, (39), 28 states have call predecessors, (39), 20 states have call successors, (39) [2023-11-06 22:53:02,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 211 transitions. [2023-11-06 22:53:02,419 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 211 transitions. Word has length 48 [2023-11-06 22:53:02,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:53:02,420 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 211 transitions. [2023-11-06 22:53:02,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 3.0689655172413794) internal successors, (89), 21 states have internal predecessors, (89), 14 states have call successors, (18), 11 states have call predecessors, (18), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-06 22:53:02,421 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 211 transitions. [2023-11-06 22:53:02,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-06 22:53:02,422 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:53:02,423 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:53:02,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-06 22:53:02,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-06 22:53:02,632 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-06 22:53:02,633 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:02,633 INFO L85 PathProgramCache]: Analyzing trace with hash 632910190, now seen corresponding path program 1 times [2023-11-06 22:53:02,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:02,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418085826] [2023-11-06 22:53:02,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:02,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:02,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:02,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-06 22:53:02,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:02,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-06 22:53:02,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:02,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:53:02,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:02,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-06 22:53:02,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:02,712 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-06 22:53:02,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:53:02,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418085826] [2023-11-06 22:53:02,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418085826] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:53:02,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354254926] [2023-11-06 22:53:02,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:02,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:53:02,713 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:53:02,714 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:53:02,739 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-06 22:53:02,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:02,779 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:53:02,781 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:53:02,967 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 16 proven. 26 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 22:53:02,967 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:53:03,203 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 16 proven. 26 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-06 22:53:03,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354254926] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:53:03,204 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:53:03,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 13, 13] total 17 [2023-11-06 22:53:03,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392362063] [2023-11-06 22:53:03,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:53:03,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-06 22:53:03,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:53:03,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-06 22:53:03,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2023-11-06 22:53:03,206 INFO L87 Difference]: Start difference. First operand 169 states and 211 transitions. Second operand has 17 states, 16 states have (on average 4.3125) internal successors, (69), 13 states have internal predecessors, (69), 8 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-06 22:53:03,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:53:03,645 INFO L93 Difference]: Finished difference Result 314 states and 394 transitions. [2023-11-06 22:53:03,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-06 22:53:03,646 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 4.3125) internal successors, (69), 13 states have internal predecessors, (69), 8 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 61 [2023-11-06 22:53:03,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:53:03,647 INFO L225 Difference]: With dead ends: 314 [2023-11-06 22:53:03,648 INFO L226 Difference]: Without dead ends: 180 [2023-11-06 22:53:03,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 112 SyntacticMatches, 10 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=135, Invalid=621, Unknown=0, NotChecked=0, Total=756 [2023-11-06 22:53:03,650 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 148 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-06 22:53:03,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 231 Invalid, 457 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-06 22:53:03,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2023-11-06 22:53:03,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 165. [2023-11-06 22:53:03,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 129 states have (on average 1.124031007751938) internal successors, (145), 130 states have internal predecessors, (145), 21 states have call successors, (21), 8 states have call predecessors, (21), 11 states have return successors, (31), 26 states have call predecessors, (31), 20 states have call successors, (31) [2023-11-06 22:53:03,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 197 transitions. [2023-11-06 22:53:03,674 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 197 transitions. Word has length 61 [2023-11-06 22:53:03,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:53:03,674 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 197 transitions. [2023-11-06 22:53:03,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 4.3125) internal successors, (69), 13 states have internal predecessors, (69), 8 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-06 22:53:03,675 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 197 transitions. [2023-11-06 22:53:03,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-06 22:53:03,675 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:53:03,676 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:53:03,690 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-06 22:53:03,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:53:03,886 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-06 22:53:03,886 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:03,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1305190632, now seen corresponding path program 1 times [2023-11-06 22:53:03,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:03,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701097651] [2023-11-06 22:53:03,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:03,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:03,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:03,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:53:03,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:03,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:53:03,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:03,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:53:03,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:03,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-06 22:53:03,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:03,968 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:53:03,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:53:03,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701097651] [2023-11-06 22:53:03,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701097651] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:53:03,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:53:03,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:53:03,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520841433] [2023-11-06 22:53:03,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:53:03,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:53:03,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:53:03,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:53:03,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:53:03,971 INFO L87 Difference]: Start difference. First operand 165 states and 197 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 22:53:04,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:53:04,001 INFO L93 Difference]: Finished difference Result 170 states and 202 transitions. [2023-11-06 22:53:04,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:53:04,001 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 55 [2023-11-06 22:53:04,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:53:04,003 INFO L225 Difference]: With dead ends: 170 [2023-11-06 22:53:04,003 INFO L226 Difference]: Without dead ends: 169 [2023-11-06 22:53:04,005 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 22:53:04,006 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 8 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 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 22:53:04,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 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 22:53:04,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2023-11-06 22:53:04,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 167. [2023-11-06 22:53:04,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 131 states have (on average 1.1145038167938932) internal successors, (146), 131 states have internal predecessors, (146), 21 states have call successors, (21), 8 states have call predecessors, (21), 11 states have return successors, (31), 27 states have call predecessors, (31), 20 states have call successors, (31) [2023-11-06 22:53:04,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 198 transitions. [2023-11-06 22:53:04,025 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 198 transitions. Word has length 55 [2023-11-06 22:53:04,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:53:04,026 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 198 transitions. [2023-11-06 22:53:04,026 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 22:53:04,026 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 198 transitions. [2023-11-06 22:53:04,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-06 22:53:04,027 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:53:04,027 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:53:04,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-06 22:53:04,028 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-06 22:53:04,028 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:04,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1806203829, now seen corresponding path program 1 times [2023-11-06 22:53:04,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:04,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121090471] [2023-11-06 22:53:04,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:04,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:04,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:04,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:53:04,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:04,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:53:04,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:04,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:53:04,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:04,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-06 22:53:04,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:04,122 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:53:04,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:53:04,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121090471] [2023-11-06 22:53:04,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121090471] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:53:04,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:53:04,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:53:04,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341789780] [2023-11-06 22:53:04,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:53:04,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:53:04,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:53:04,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:53:04,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:53:04,125 INFO L87 Difference]: Start difference. First operand 167 states and 198 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 22:53:04,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:53:04,157 INFO L93 Difference]: Finished difference Result 169 states and 200 transitions. [2023-11-06 22:53:04,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:53:04,157 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 56 [2023-11-06 22:53:04,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:53:04,159 INFO L225 Difference]: With dead ends: 169 [2023-11-06 22:53:04,159 INFO L226 Difference]: Without dead ends: 168 [2023-11-06 22:53:04,159 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 22:53:04,160 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 22:53:04,161 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 22:53:04,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-11-06 22:53:04,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 161. [2023-11-06 22:53:04,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 126 states have (on average 1.1111111111111112) internal successors, (140), 127 states have internal predecessors, (140), 20 states have call successors, (20), 8 states have call predecessors, (20), 11 states have return successors, (30), 25 states have call predecessors, (30), 19 states have call successors, (30) [2023-11-06 22:53:04,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 190 transitions. [2023-11-06 22:53:04,175 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 190 transitions. Word has length 56 [2023-11-06 22:53:04,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:53:04,175 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 190 transitions. [2023-11-06 22:53:04,175 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 22:53:04,175 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 190 transitions. [2023-11-06 22:53:04,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-06 22:53:04,176 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:53:04,177 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:53:04,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-06 22:53:04,177 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-06 22:53:04,177 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:04,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1795256181, now seen corresponding path program 1 times [2023-11-06 22:53:04,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:04,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854064452] [2023-11-06 22:53:04,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:04,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:04,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:04,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:53:04,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:04,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:53:04,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:04,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:53:04,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:04,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-06 22:53:04,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:04,247 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-06 22:53:04,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:53:04,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854064452] [2023-11-06 22:53:04,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854064452] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:53:04,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:53:04,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:53:04,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073021156] [2023-11-06 22:53:04,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:53:04,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:53:04,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:53:04,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:53:04,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:53:04,249 INFO L87 Difference]: Start difference. First operand 161 states and 190 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 22:53:04,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:53:04,283 INFO L93 Difference]: Finished difference Result 169 states and 199 transitions. [2023-11-06 22:53:04,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:53:04,284 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 56 [2023-11-06 22:53:04,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:53:04,285 INFO L225 Difference]: With dead ends: 169 [2023-11-06 22:53:04,285 INFO L226 Difference]: Without dead ends: 168 [2023-11-06 22:53:04,286 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 22:53:04,287 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 6 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:53:04,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 152 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:53:04,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2023-11-06 22:53:04,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 165. [2023-11-06 22:53:04,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 129 states have (on average 1.1085271317829457) internal successors, (143), 130 states have internal predecessors, (143), 20 states have call successors, (20), 8 states have call predecessors, (20), 12 states have return successors, (32), 26 states have call predecessors, (32), 19 states have call successors, (32) [2023-11-06 22:53:04,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 195 transitions. [2023-11-06 22:53:04,307 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 195 transitions. Word has length 56 [2023-11-06 22:53:04,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:53:04,308 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 195 transitions. [2023-11-06 22:53:04,308 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 22:53:04,308 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 195 transitions. [2023-11-06 22:53:04,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-06 22:53:04,309 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:53:04,310 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:53:04,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-06 22:53:04,310 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-06 22:53:04,310 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:04,310 INFO L85 PathProgramCache]: Analyzing trace with hash 181633336, now seen corresponding path program 1 times [2023-11-06 22:53:04,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:04,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56951090] [2023-11-06 22:53:04,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:04,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:04,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:04,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:53:04,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:04,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:53:04,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:04,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:53:04,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:04,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-06 22:53:04,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:04,461 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:53:04,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:53:04,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56951090] [2023-11-06 22:53:04,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56951090] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:53:04,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:53:04,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-06 22:53:04,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539172027] [2023-11-06 22:53:04,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:53:04,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-06 22:53:04,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:53:04,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-06 22:53:04,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-06 22:53:04,464 INFO L87 Difference]: Start difference. First operand 165 states and 195 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 22:53:04,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:53:04,552 INFO L93 Difference]: Finished difference Result 201 states and 237 transitions. [2023-11-06 22:53:04,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-06 22:53:04,553 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 57 [2023-11-06 22:53:04,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:53:04,555 INFO L225 Difference]: With dead ends: 201 [2023-11-06 22:53:04,555 INFO L226 Difference]: Without dead ends: 200 [2023-11-06 22:53:04,556 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 22:53:04,557 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 9 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:53:04,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 229 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:53:04,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2023-11-06 22:53:04,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 171. [2023-11-06 22:53:04,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 133 states have (on average 1.105263157894737) internal successors, (147), 135 states have internal predecessors, (147), 21 states have call successors, (21), 8 states have call predecessors, (21), 13 states have return successors, (36), 27 states have call predecessors, (36), 20 states have call successors, (36) [2023-11-06 22:53:04,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 204 transitions. [2023-11-06 22:53:04,572 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 204 transitions. Word has length 57 [2023-11-06 22:53:04,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:53:04,572 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 204 transitions. [2023-11-06 22:53:04,572 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 22:53:04,573 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 204 transitions. [2023-11-06 22:53:04,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-06 22:53:04,574 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:53:04,574 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:53:04,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-06 22:53:04,575 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-06 22:53:04,575 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:04,575 INFO L85 PathProgramCache]: Analyzing trace with hash -2056240160, now seen corresponding path program 1 times [2023-11-06 22:53:04,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:04,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896930929] [2023-11-06 22:53:04,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:04,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:04,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:04,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-06 22:53:04,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:04,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:53:04,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:04,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-06 22:53:04,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:04,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-06 22:53:04,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:04,652 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-06 22:53:04,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:53:04,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896930929] [2023-11-06 22:53:04,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896930929] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:53:04,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:53:04,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-06 22:53:04,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051481644] [2023-11-06 22:53:04,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:53:04,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-06 22:53:04,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:53:04,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-06 22:53:04,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-06 22:53:04,656 INFO L87 Difference]: Start difference. First operand 171 states and 204 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 22:53:04,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:53:04,691 INFO L93 Difference]: Finished difference Result 179 states and 212 transitions. [2023-11-06 22:53:04,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-06 22:53:04,691 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 61 [2023-11-06 22:53:04,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:53:04,693 INFO L225 Difference]: With dead ends: 179 [2023-11-06 22:53:04,694 INFO L226 Difference]: Without dead ends: 178 [2023-11-06 22:53:04,694 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 22:53:04,695 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 4 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-06 22:53:04,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 111 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-06 22:53:04,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2023-11-06 22:53:04,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 164. [2023-11-06 22:53:04,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 127 states have (on average 1.094488188976378) internal successors, (139), 130 states have internal predecessors, (139), 20 states have call successors, (20), 8 states have call predecessors, (20), 13 states have return successors, (35), 25 states have call predecessors, (35), 19 states have call successors, (35) [2023-11-06 22:53:04,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 194 transitions. [2023-11-06 22:53:04,711 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 194 transitions. Word has length 61 [2023-11-06 22:53:04,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:53:04,712 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 194 transitions. [2023-11-06 22:53:04,712 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 22:53:04,712 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 194 transitions. [2023-11-06 22:53:04,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-06 22:53:04,714 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:53:04,714 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 4, 4, 4, 3, 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] [2023-11-06 22:53:04,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-06 22:53:04,714 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-06 22:53:04,715 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:04,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1507569518, now seen corresponding path program 1 times [2023-11-06 22:53:04,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:04,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895701538] [2023-11-06 22:53:04,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:04,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:04,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:04,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:53:04,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:04,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:53:04,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:04,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:53:04,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:04,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-06 22:53:04,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:04,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:53:04,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:04,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:53:04,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:04,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-06 22:53:04,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:04,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 22:53:04,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:05,002 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 26 proven. 48 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-06 22:53:05,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:53:05,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895701538] [2023-11-06 22:53:05,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895701538] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:53:05,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409865703] [2023-11-06 22:53:05,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:05,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:53:05,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:53:05,005 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:53:05,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-06 22:53:05,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:05,084 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-06 22:53:05,093 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:53:05,225 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 33 proven. 51 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:53:05,225 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:53:05,553 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 33 proven. 51 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-06 22:53:05,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [409865703] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:53:05,554 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:53:05,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 18 [2023-11-06 22:53:05,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341005801] [2023-11-06 22:53:05,555 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:53:05,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-06 22:53:05,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:53:05,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 22:53:05,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:53:05,557 INFO L87 Difference]: Start difference. First operand 164 states and 194 transitions. Second operand has 18 states, 17 states have (on average 5.176470588235294) internal successors, (88), 15 states have internal predecessors, (88), 10 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (13), 6 states have call predecessors, (13), 7 states have call successors, (13) [2023-11-06 22:53:05,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:53:05,869 INFO L93 Difference]: Finished difference Result 275 states and 323 transitions. [2023-11-06 22:53:05,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-06 22:53:05,870 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 5.176470588235294) internal successors, (88), 15 states have internal predecessors, (88), 10 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (13), 6 states have call predecessors, (13), 7 states have call successors, (13) Word has length 93 [2023-11-06 22:53:05,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:53:05,872 INFO L225 Difference]: With dead ends: 275 [2023-11-06 22:53:05,872 INFO L226 Difference]: Without dead ends: 169 [2023-11-06 22:53:05,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 191 SyntacticMatches, 9 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=119, Invalid=531, Unknown=0, NotChecked=0, Total=650 [2023-11-06 22:53:05,874 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 125 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:53:05,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 234 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:53:05,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2023-11-06 22:53:05,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 166. [2023-11-06 22:53:05,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 128 states have (on average 1.09375) internal successors, (140), 132 states have internal predecessors, (140), 20 states have call successors, (20), 9 states have call predecessors, (20), 14 states have return successors, (33), 24 states have call predecessors, (33), 19 states have call successors, (33) [2023-11-06 22:53:05,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 193 transitions. [2023-11-06 22:53:05,891 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 193 transitions. Word has length 93 [2023-11-06 22:53:05,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:53:05,891 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 193 transitions. [2023-11-06 22:53:05,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 5.176470588235294) internal successors, (88), 15 states have internal predecessors, (88), 10 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (13), 6 states have call predecessors, (13), 7 states have call successors, (13) [2023-11-06 22:53:05,892 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 193 transitions. [2023-11-06 22:53:05,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-06 22:53:05,893 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:53:05,893 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:53:05,900 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-06 22:53:06,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:53:06,100 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-06 22:53:06,101 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:06,101 INFO L85 PathProgramCache]: Analyzing trace with hash 196968042, now seen corresponding path program 1 times [2023-11-06 22:53:06,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:06,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557806087] [2023-11-06 22:53:06,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:06,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:06,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:06,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:53:06,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:06,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:53:06,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:06,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:53:06,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:06,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:53:06,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:06,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-06 22:53:06,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:06,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-06 22:53:06,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:06,355 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 11 proven. 26 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-06 22:53:06,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:53:06,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557806087] [2023-11-06 22:53:06,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557806087] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:53:06,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914866133] [2023-11-06 22:53:06,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:06,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:53:06,356 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:53:06,357 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:53:06,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-06 22:53:06,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:06,421 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-06 22:53:06,424 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:53:06,550 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 31 proven. 22 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-06 22:53:06,551 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:53:06,855 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 14 proven. 29 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-06 22:53:06,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914866133] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:53:06,858 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:53:06,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 18 [2023-11-06 22:53:06,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365643395] [2023-11-06 22:53:06,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:53:06,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-06 22:53:06,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:53:06,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-06 22:53:06,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2023-11-06 22:53:06,862 INFO L87 Difference]: Start difference. First operand 166 states and 193 transitions. Second operand has 18 states, 17 states have (on average 5.0588235294117645) internal successors, (86), 16 states have internal predecessors, (86), 9 states have call successors, (15), 4 states have call predecessors, (15), 5 states have return successors, (14), 8 states have call predecessors, (14), 7 states have call successors, (14) [2023-11-06 22:53:07,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:53:07,163 INFO L93 Difference]: Finished difference Result 287 states and 334 transitions. [2023-11-06 22:53:07,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:53:07,164 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 5.0588235294117645) internal successors, (86), 16 states have internal predecessors, (86), 9 states have call successors, (15), 4 states have call predecessors, (15), 5 states have return successors, (14), 8 states have call predecessors, (14), 7 states have call successors, (14) Word has length 70 [2023-11-06 22:53:07,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:53:07,166 INFO L225 Difference]: With dead ends: 287 [2023-11-06 22:53:07,166 INFO L226 Difference]: Without dead ends: 159 [2023-11-06 22:53:07,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 145 SyntacticMatches, 7 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2023-11-06 22:53:07,168 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 106 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-06 22:53:07,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 316 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-06 22:53:07,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-11-06 22:53:07,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 152. [2023-11-06 22:53:07,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 118 states have (on average 1.0847457627118644) internal successors, (128), 120 states have internal predecessors, (128), 18 states have call successors, (18), 9 states have call predecessors, (18), 12 states have return successors, (26), 22 states have call predecessors, (26), 17 states have call successors, (26) [2023-11-06 22:53:07,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 172 transitions. [2023-11-06 22:53:07,183 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 172 transitions. Word has length 70 [2023-11-06 22:53:07,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:53:07,183 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 172 transitions. [2023-11-06 22:53:07,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 5.0588235294117645) internal successors, (86), 16 states have internal predecessors, (86), 9 states have call successors, (15), 4 states have call predecessors, (15), 5 states have return successors, (14), 8 states have call predecessors, (14), 7 states have call successors, (14) [2023-11-06 22:53:07,184 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 172 transitions. [2023-11-06 22:53:07,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-06 22:53:07,185 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:53:07,186 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:53:07,196 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-06 22:53:07,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:53:07,391 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-06 22:53:07,391 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:07,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1001511063, now seen corresponding path program 1 times [2023-11-06 22:53:07,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:07,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38204253] [2023-11-06 22:53:07,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:07,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:07,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:07,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:53:07,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:07,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:53:07,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:07,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:53:07,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:07,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:53:07,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:07,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-06 22:53:07,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:07,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-06 22:53:07,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:07,558 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-06 22:53:07,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:53:07,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38204253] [2023-11-06 22:53:07,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38204253] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:53:07,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955224058] [2023-11-06 22:53:07,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:07,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:53:07,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:53:07,560 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:53:07,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-06 22:53:07,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:07,635 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:53:07,639 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:53:07,692 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-06 22:53:07,692 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:53:07,837 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-06 22:53:07,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955224058] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:53:07,838 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:53:07,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2023-11-06 22:53:07,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179738022] [2023-11-06 22:53:07,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:53:07,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-06 22:53:07,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:53:07,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-06 22:53:07,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-06 22:53:07,841 INFO L87 Difference]: Start difference. First operand 152 states and 172 transitions. Second operand has 11 states, 10 states have (on average 5.5) internal successors, (55), 9 states have internal predecessors, (55), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-06 22:53:08,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:53:08,020 INFO L93 Difference]: Finished difference Result 236 states and 263 transitions. [2023-11-06 22:53:08,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-06 22:53:08,021 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.5) internal successors, (55), 9 states have internal predecessors, (55), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 71 [2023-11-06 22:53:08,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:53:08,023 INFO L225 Difference]: With dead ends: 236 [2023-11-06 22:53:08,023 INFO L226 Difference]: Without dead ends: 153 [2023-11-06 22:53:08,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 147 SyntacticMatches, 6 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:53:08,026 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 68 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:53:08,027 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 253 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:53:08,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2023-11-06 22:53:08,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 150. [2023-11-06 22:53:08,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 116 states have (on average 1.0862068965517242) internal successors, (126), 119 states have internal predecessors, (126), 18 states have call successors, (18), 9 states have call predecessors, (18), 12 states have return successors, (25), 21 states have call predecessors, (25), 17 states have call successors, (25) [2023-11-06 22:53:08,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 169 transitions. [2023-11-06 22:53:08,062 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 169 transitions. Word has length 71 [2023-11-06 22:53:08,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:53:08,062 INFO L495 AbstractCegarLoop]: Abstraction has 150 states and 169 transitions. [2023-11-06 22:53:08,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.5) internal successors, (55), 9 states have internal predecessors, (55), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-06 22:53:08,063 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 169 transitions. [2023-11-06 22:53:08,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-06 22:53:08,065 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:53:08,065 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 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 22:53:08,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-06 22:53:08,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:53:08,271 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-06 22:53:08,271 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:08,271 INFO L85 PathProgramCache]: Analyzing trace with hash -350756515, now seen corresponding path program 1 times [2023-11-06 22:53:08,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:08,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022233868] [2023-11-06 22:53:08,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:08,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:08,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:08,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-11-06 22:53:08,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:08,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:53:08,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:08,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:53:08,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:08,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-06 22:53:08,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:08,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-06 22:53:08,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:08,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-06 22:53:08,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:08,533 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 11 proven. 39 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-06 22:53:08,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:53:08,533 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022233868] [2023-11-06 22:53:08,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022233868] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:53:08,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821954387] [2023-11-06 22:53:08,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:08,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:53:08,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:53:08,535 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:53:08,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-06 22:53:08,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:08,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-06 22:53:08,605 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:53:08,813 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2023-11-06 22:53:08,813 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:53:09,374 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2023-11-06 22:53:09,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821954387] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:53:09,375 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:53:09,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 11] total 28 [2023-11-06 22:53:09,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129136090] [2023-11-06 22:53:09,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:53:09,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-11-06 22:53:09,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:53:09,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-11-06 22:53:09,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=680, Unknown=0, NotChecked=0, Total=756 [2023-11-06 22:53:09,379 INFO L87 Difference]: Start difference. First operand 150 states and 169 transitions. Second operand has 28 states, 27 states have (on average 3.4814814814814814) internal successors, (94), 25 states have internal predecessors, (94), 11 states have call successors, (14), 4 states have call predecessors, (14), 8 states have return successors, (15), 11 states have call predecessors, (15), 8 states have call successors, (15) [2023-11-06 22:53:10,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:53:10,211 INFO L93 Difference]: Finished difference Result 234 states and 266 transitions. [2023-11-06 22:53:10,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-06 22:53:10,212 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 3.4814814814814814) internal successors, (94), 25 states have internal predecessors, (94), 11 states have call successors, (14), 4 states have call predecessors, (14), 8 states have return successors, (15), 11 states have call predecessors, (15), 8 states have call successors, (15) Word has length 75 [2023-11-06 22:53:10,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:53:10,213 INFO L225 Difference]: With dead ends: 234 [2023-11-06 22:53:10,213 INFO L226 Difference]: Without dead ends: 126 [2023-11-06 22:53:10,215 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 152 SyntacticMatches, 3 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 405 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=282, Invalid=1974, Unknown=0, NotChecked=0, Total=2256 [2023-11-06 22:53:10,216 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 158 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-06 22:53:10,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 238 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-06 22:53:10,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2023-11-06 22:53:10,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 120. [2023-11-06 22:53:10,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 92 states have (on average 1.076086956521739) internal successors, (99), 96 states have internal predecessors, (99), 14 states have call successors, (14), 9 states have call predecessors, (14), 10 states have return successors, (16), 14 states have call predecessors, (16), 13 states have call successors, (16) [2023-11-06 22:53:10,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 129 transitions. [2023-11-06 22:53:10,227 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 129 transitions. Word has length 75 [2023-11-06 22:53:10,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:53:10,227 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 129 transitions. [2023-11-06 22:53:10,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 3.4814814814814814) internal successors, (94), 25 states have internal predecessors, (94), 11 states have call successors, (14), 4 states have call predecessors, (14), 8 states have return successors, (15), 11 states have call predecessors, (15), 8 states have call successors, (15) [2023-11-06 22:53:10,228 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 129 transitions. [2023-11-06 22:53:10,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2023-11-06 22:53:10,230 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:53:10,230 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:53:10,236 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-06 22:53:10,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:53:10,436 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-06 22:53:10,436 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:10,436 INFO L85 PathProgramCache]: Analyzing trace with hash -2016411688, now seen corresponding path program 1 times [2023-11-06 22:53:10,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:10,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123677536] [2023-11-06 22:53:10,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:10,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:10,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:10,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:53:10,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:10,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:53:10,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:10,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:53:10,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:10,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:53:10,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:10,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-06 22:53:10,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:10,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-06 22:53:10,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:10,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:53:10,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:10,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:53:10,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:10,865 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-11-06 22:53:10,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:53:10,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123677536] [2023-11-06 22:53:10,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123677536] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:53:10,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221732181] [2023-11-06 22:53:10,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:10,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:53:10,867 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:53:10,868 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:53:10,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-06 22:53:10,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:10,953 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-06 22:53:10,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:53:11,156 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 8 proven. 19 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-11-06 22:53:11,157 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:53:11,843 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 16 proven. 19 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-06 22:53:11,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221732181] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:53:11,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:53:11,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 15] total 28 [2023-11-06 22:53:11,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439615085] [2023-11-06 22:53:11,844 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:53:11,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-06 22:53:11,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:53:11,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-06 22:53:11,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=699, Unknown=0, NotChecked=0, Total=812 [2023-11-06 22:53:11,850 INFO L87 Difference]: Start difference. First operand 120 states and 129 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 22:53:12,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:53:12,053 INFO L93 Difference]: Finished difference Result 121 states and 129 transitions. [2023-11-06 22:53:12,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-06 22:53:12,053 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 89 [2023-11-06 22:53:12,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:53:12,055 INFO L225 Difference]: With dead ends: 121 [2023-11-06 22:53:12,055 INFO L226 Difference]: Without dead ends: 119 [2023-11-06 22:53:12,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 177 SyntacticMatches, 5 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=145, Invalid=847, Unknown=0, NotChecked=0, Total=992 [2023-11-06 22:53:12,056 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 12 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:53:12,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 464 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:53:12,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-11-06 22:53:12,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 118. [2023-11-06 22:53:12,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 92 states have (on average 1.0543478260869565) internal successors, (97), 94 states have internal predecessors, (97), 14 states have call successors, (14), 9 states have call predecessors, (14), 10 states have return successors, (16), 14 states have call predecessors, (16), 13 states have call successors, (16) [2023-11-06 22:53:12,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 127 transitions. [2023-11-06 22:53:12,075 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 127 transitions. Word has length 89 [2023-11-06 22:53:12,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:53:12,075 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 127 transitions. [2023-11-06 22:53:12,076 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 22:53:12,076 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 127 transitions. [2023-11-06 22:53:12,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-06 22:53:12,078 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:53:12,079 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:53:12,092 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-06 22:53:12,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:53:12,286 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-06 22:53:12,286 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:12,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1915747185, now seen corresponding path program 1 times [2023-11-06 22:53:12,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:12,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820415373] [2023-11-06 22:53:12,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:12,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:12,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:12,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:53:12,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:12,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:53:12,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:12,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:53:12,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:12,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:53:12,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:12,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-06 22:53:12,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:12,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2023-11-06 22:53:12,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:12,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:53:12,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:12,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:53:12,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:12,701 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-11-06 22:53:12,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:53:12,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820415373] [2023-11-06 22:53:12,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820415373] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:53:12,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507723458] [2023-11-06 22:53:12,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:12,703 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:53:12,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:53:12,704 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:53:12,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-06 22:53:12,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:12,796 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-06 22:53:12,798 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:53:12,972 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-11-06 22:53:12,972 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:53:13,618 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 23 proven. 13 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-11-06 22:53:13,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507723458] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:53:13,619 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:53:13,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 16] total 26 [2023-11-06 22:53:13,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420295667] [2023-11-06 22:53:13,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:53:13,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-06 22:53:13,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:53:13,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-06 22:53:13,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2023-11-06 22:53:13,626 INFO L87 Difference]: Start difference. First operand 118 states and 127 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 22:53:13,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:53:13,781 INFO L93 Difference]: Finished difference Result 127 states and 135 transitions. [2023-11-06 22:53:13,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-06 22:53:13,782 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 90 [2023-11-06 22:53:13,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:53:13,783 INFO L225 Difference]: With dead ends: 127 [2023-11-06 22:53:13,783 INFO L226 Difference]: Without dead ends: 117 [2023-11-06 22:53:13,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 179 SyntacticMatches, 7 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=122, Invalid=690, Unknown=0, NotChecked=0, Total=812 [2023-11-06 22:53:13,785 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 7 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:53:13,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 376 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:53:13,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2023-11-06 22:53:13,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 110. [2023-11-06 22:53:13,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 86 states have (on average 1.0348837209302326) internal successors, (89), 88 states have internal predecessors, (89), 13 states have call successors, (13), 9 states have call predecessors, (13), 10 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2023-11-06 22:53:13,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 115 transitions. [2023-11-06 22:53:13,802 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 115 transitions. Word has length 90 [2023-11-06 22:53:13,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:53:13,802 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 115 transitions. [2023-11-06 22:53:13,803 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 22:53:13,803 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 115 transitions. [2023-11-06 22:53:13,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2023-11-06 22:53:13,807 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:53:13,807 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-11-06 22:53:13,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-06 22:53:14,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-06 22:53:14,014 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-06 22:53:14,014 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:14,014 INFO L85 PathProgramCache]: Analyzing trace with hash 324878117, now seen corresponding path program 1 times [2023-11-06 22:53:14,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:14,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349753893] [2023-11-06 22:53:14,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:14,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:14,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:14,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 22:53:14,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:14,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:53:14,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:14,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:53:14,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:14,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:53:14,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:14,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:53:14,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:14,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-06 22:53:14,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:14,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-06 22:53:14,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:14,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:53:14,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:14,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:53:14,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:14,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-06 22:53:14,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:14,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:53:14,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:14,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:53:14,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:14,290 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 68 proven. 27 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2023-11-06 22:53:14,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:53:14,291 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349753893] [2023-11-06 22:53:14,292 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349753893] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:53:14,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92723894] [2023-11-06 22:53:14,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:14,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:53:14,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:53:14,296 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:53:14,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-06 22:53:14,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:14,394 INFO L262 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-06 22:53:14,396 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:53:14,456 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 68 proven. 27 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2023-11-06 22:53:14,457 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:53:14,690 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 68 proven. 27 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2023-11-06 22:53:14,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92723894] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:53:14,691 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:53:14,691 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 14 [2023-11-06 22:53:14,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553827582] [2023-11-06 22:53:14,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:53:14,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-06 22:53:14,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:53:14,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-06 22:53:14,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2023-11-06 22:53:14,701 INFO L87 Difference]: Start difference. First operand 110 states and 115 transitions. Second operand has 14 states, 13 states have (on average 5.846153846153846) internal successors, (76), 13 states have internal predecessors, (76), 8 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 5 states have call predecessors, (11), 7 states have call successors, (11) [2023-11-06 22:53:14,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:53:14,868 INFO L93 Difference]: Finished difference Result 126 states and 132 transitions. [2023-11-06 22:53:14,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-06 22:53:14,870 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.846153846153846) internal successors, (76), 13 states have internal predecessors, (76), 8 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 5 states have call predecessors, (11), 7 states have call successors, (11) Word has length 124 [2023-11-06 22:53:14,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:53:14,871 INFO L225 Difference]: With dead ends: 126 [2023-11-06 22:53:14,871 INFO L226 Difference]: Without dead ends: 110 [2023-11-06 22:53:14,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 262 SyntacticMatches, 5 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2023-11-06 22:53:14,872 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 71 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:53:14,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 152 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:53:14,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-11-06 22:53:14,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2023-11-06 22:53:14,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 87 states have (on average 1.0229885057471264) internal successors, (89), 87 states have internal predecessors, (89), 13 states have call successors, (13), 10 states have call predecessors, (13), 9 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-06 22:53:14,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 114 transitions. [2023-11-06 22:53:14,882 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 114 transitions. Word has length 124 [2023-11-06 22:53:14,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:53:14,882 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 114 transitions. [2023-11-06 22:53:14,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.846153846153846) internal successors, (76), 13 states have internal predecessors, (76), 8 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (11), 5 states have call predecessors, (11), 7 states have call successors, (11) [2023-11-06 22:53:14,882 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 114 transitions. [2023-11-06 22:53:14,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2023-11-06 22:53:14,884 INFO L187 NwaCegarLoop]: Found error trace [2023-11-06 22:53:14,884 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 7, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2023-11-06 22:53:14,891 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-06 22:53:15,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:53:15,090 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-06 22:53:15,090 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:53:15,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1419353795, now seen corresponding path program 2 times [2023-11-06 22:53:15,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:53:15,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033036815] [2023-11-06 22:53:15,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:53:15,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:53:15,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:15,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-06 22:53:15,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:15,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:53:15,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:15,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:53:15,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:15,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:53:15,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:15,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:53:15,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:15,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-06 22:53:15,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:15,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-06 22:53:15,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:15,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:53:15,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:15,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:53:15,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:15,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-06 22:53:15,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:15,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:53:15,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:15,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-06 22:53:15,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:15,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-06 22:53:15,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:15,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-06 22:53:15,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:53:15,894 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 45 proven. 59 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2023-11-06 22:53:15,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:53:15,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033036815] [2023-11-06 22:53:15,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033036815] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-06 22:53:15,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [202592608] [2023-11-06 22:53:15,895 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-06 22:53:15,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:53:15,895 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:53:15,896 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-06 22:53:15,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-06 22:53:15,994 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-06 22:53:15,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-06 22:53:15,996 INFO L262 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-06 22:53:15,999 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-06 22:53:16,273 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 45 proven. 59 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2023-11-06 22:53:16,273 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-06 22:53:18,079 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 74 proven. 54 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2023-11-06 22:53:18,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [202592608] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-06 22:53:18,079 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-06 22:53:18,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 22] total 36 [2023-11-06 22:53:18,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108668182] [2023-11-06 22:53:18,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-06 22:53:18,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-11-06 22:53:18,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:53:18,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-11-06 22:53:18,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1152, Unknown=0, NotChecked=0, Total=1332 [2023-11-06 22:53:18,082 INFO L87 Difference]: Start difference. First operand 110 states and 114 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 22:53:18,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-06 22:53:18,241 INFO L93 Difference]: Finished difference Result 110 states and 114 transitions. [2023-11-06 22:53:18,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-06 22:53:18,241 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 143 [2023-11-06 22:53:18,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-06 22:53:18,242 INFO L225 Difference]: With dead ends: 110 [2023-11-06 22:53:18,243 INFO L226 Difference]: Without dead ends: 0 [2023-11-06 22:53:18,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 290 SyntacticMatches, 16 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 848 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=180, Invalid=1152, Unknown=0, NotChecked=0, Total=1332 [2023-11-06 22:53:18,245 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 0 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-06 22:53:18,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 468 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-06 22:53:18,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-06 22:53:18,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-06 22:53:18,246 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 22:53:18,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-06 22:53:18,246 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 143 [2023-11-06 22:53:18,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-06 22:53:18,246 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-06 22:53:18,247 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 22:53:18,247 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-06 22:53:18,247 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-06 22:53:18,250 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 12 remaining) [2023-11-06 22:53:18,251 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2023-11-06 22:53:18,251 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2023-11-06 22:53:18,251 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2023-11-06 22:53:18,251 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining) [2023-11-06 22:53:18,251 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 12 remaining) [2023-11-06 22:53:18,252 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 12 remaining) [2023-11-06 22:53:18,252 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 12 remaining) [2023-11-06 22:53:18,252 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2023-11-06 22:53:18,252 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2023-11-06 22:53:18,253 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2023-11-06 22:53:18,253 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2023-11-06 22:53:18,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-06 22:53:18,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-06 22:53:18,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-06 22:53:19,242 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-06 22:53:19,242 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2023-11-06 22:53:19,242 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2023-11-06 22:53:19,242 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-06 22:53:19,242 INFO L899 garLoopResultBuilder]: For program point L41(line 41) no Hoare annotation was computed. [2023-11-06 22:53:19,243 INFO L902 garLoopResultBuilder]: At program point main_returnLabel#1(lines 37 44) the Hoare annotation is: true [2023-11-06 22:53:19,243 INFO L899 garLoopResultBuilder]: For program point L40(lines 40 42) no Hoare annotation was computed. [2023-11-06 22:53:19,243 INFO L895 garLoopResultBuilder]: At program point L39(line 39) the Hoare annotation is: (= 5 |ULTIMATE.start_main_~x~0#1|) [2023-11-06 22:53:19,243 INFO L899 garLoopResultBuilder]: For program point L39-1(line 39) no Hoare annotation was computed. [2023-11-06 22:53:19,243 INFO L899 garLoopResultBuilder]: For program point L40-2(lines 40 42) no Hoare annotation was computed. [2023-11-06 22:53:19,243 INFO L899 garLoopResultBuilder]: For program point L4(line 4) no Hoare annotation was computed. [2023-11-06 22:53:19,243 INFO L899 garLoopResultBuilder]: For program point fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2023-11-06 22:53:19,244 INFO L899 garLoopResultBuilder]: For program point L25(line 25) no Hoare annotation was computed. [2023-11-06 22:53:19,244 INFO L899 garLoopResultBuilder]: For program point fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2023-11-06 22:53:19,244 INFO L899 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2023-11-06 22:53:19,246 INFO L895 garLoopResultBuilder]: At program point L25-2(line 25) the Hoare annotation is: (and (or (= fibo2_~n 2) (< 2 |fibo2_#in~n|)) (or (= fibo2_~n |fibo2_#in~n|) (< 4 |fibo2_#in~n|))) [2023-11-06 22:53:19,246 INFO L899 garLoopResultBuilder]: For program point L25-3(line 25) no Hoare annotation was computed. [2023-11-06 22:53:19,246 INFO L899 garLoopResultBuilder]: For program point L25-4(line 25) no Hoare annotation was computed. [2023-11-06 22:53:19,246 INFO L899 garLoopResultBuilder]: For program point L25-5(line 25) no Hoare annotation was computed. [2023-11-06 22:53:19,248 INFO L895 garLoopResultBuilder]: At program point L25-6(line 25) the Hoare annotation is: (let ((.cse0 (= fibo2_~n |fibo2_#in~n|))) (and (or (and .cse0 (= |fibo2_#t~ret6| 2)) (< |fibo2_#in~n| 4) (< 4 |fibo2_#in~n|)) (or (= fibo2_~n 2) (< 2 |fibo2_#in~n|)) (or (<= 4 |fibo2_#in~n|) (and (= |fibo2_#t~ret6| 1) .cse0)))) [2023-11-06 22:53:19,251 INFO L899 garLoopResultBuilder]: For program point L25-7(line 25) no Hoare annotation was computed. [2023-11-06 22:53:19,251 INFO L899 garLoopResultBuilder]: For program point L25-8(line 25) no Hoare annotation was computed. [2023-11-06 22:53:19,252 INFO L899 garLoopResultBuilder]: For program point L25-9(line 25) no Hoare annotation was computed. [2023-11-06 22:53:19,252 INFO L899 garLoopResultBuilder]: For program point fibo2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2023-11-06 22:53:19,252 INFO L899 garLoopResultBuilder]: For program point fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2023-11-06 22:53:19,252 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 19 27) the Hoare annotation is: true [2023-11-06 22:53:19,252 INFO L899 garLoopResultBuilder]: For program point fibo2EXIT(lines 19 27) no Hoare annotation was computed. [2023-11-06 22:53:19,253 INFO L899 garLoopResultBuilder]: For program point fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2023-11-06 22:53:19,253 INFO L899 garLoopResultBuilder]: For program point L22(lines 22 26) no Hoare annotation was computed. [2023-11-06 22:53:19,253 INFO L899 garLoopResultBuilder]: For program point L20(lines 20 26) no Hoare annotation was computed. [2023-11-06 22:53:19,253 INFO L899 garLoopResultBuilder]: For program point fibo2FINAL(lines 19 27) no Hoare annotation was computed. [2023-11-06 22:53:19,253 INFO L899 garLoopResultBuilder]: For program point fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2023-11-06 22:53:19,253 INFO L899 garLoopResultBuilder]: For program point fibo1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2023-11-06 22:53:19,254 INFO L899 garLoopResultBuilder]: For program point fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2023-11-06 22:53:19,254 INFO L899 garLoopResultBuilder]: For program point L15(line 15) no Hoare annotation was computed. [2023-11-06 22:53:19,254 INFO L899 garLoopResultBuilder]: For program point L15-1(line 15) no Hoare annotation was computed. [2023-11-06 22:53:19,254 INFO L895 garLoopResultBuilder]: At program point L15-2(line 15) the Hoare annotation is: (let ((.cse0 (= fibo1_~n |fibo1_#in~n|))) (and (or (< 3 |fibo1_#in~n|) .cse0) (< 1 |fibo1_#in~n|) (or (< |fibo1_#in~n| 5) .cse0 (< 5 |fibo1_#in~n|)))) [2023-11-06 22:53:19,254 INFO L899 garLoopResultBuilder]: For program point L15-3(line 15) no Hoare annotation was computed. [2023-11-06 22:53:19,255 INFO L899 garLoopResultBuilder]: For program point L15-4(line 15) no Hoare annotation was computed. [2023-11-06 22:53:19,255 INFO L899 garLoopResultBuilder]: For program point fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2023-11-06 22:53:19,255 INFO L899 garLoopResultBuilder]: For program point fibo1FINAL(lines 9 17) no Hoare annotation was computed. [2023-11-06 22:53:19,255 INFO L899 garLoopResultBuilder]: For program point L15-5(line 15) no Hoare annotation was computed. [2023-11-06 22:53:19,255 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 9 17) the Hoare annotation is: true [2023-11-06 22:53:19,256 INFO L895 garLoopResultBuilder]: At program point L15-6(line 15) the Hoare annotation is: (let ((.cse0 (= fibo1_~n |fibo1_#in~n|))) (and (or (and (= |fibo1_#t~ret4| 1) .cse0) (< 3 |fibo1_#in~n|)) (or (<= 3 |fibo1_#in~n|) (= fibo1_~n 2)) (or (< |fibo1_#in~n| 5) (and (<= |fibo1_#t~ret4| 3) (<= 1 |fibo1_#t~ret4|) .cse0) (< 5 |fibo1_#in~n|)))) [2023-11-06 22:53:19,256 INFO L899 garLoopResultBuilder]: For program point L15-7(line 15) no Hoare annotation was computed. [2023-11-06 22:53:19,256 INFO L899 garLoopResultBuilder]: For program point L15-8(line 15) no Hoare annotation was computed. [2023-11-06 22:53:19,256 INFO L899 garLoopResultBuilder]: For program point L15-9(line 15) no Hoare annotation was computed. [2023-11-06 22:53:19,256 INFO L899 garLoopResultBuilder]: For program point fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2023-11-06 22:53:19,256 INFO L899 garLoopResultBuilder]: For program point fibo1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2023-11-06 22:53:19,257 INFO L899 garLoopResultBuilder]: For program point fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2023-11-06 22:53:19,257 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 16) no Hoare annotation was computed. [2023-11-06 22:53:19,257 INFO L899 garLoopResultBuilder]: For program point L10(lines 10 16) no Hoare annotation was computed. [2023-11-06 22:53:19,257 INFO L899 garLoopResultBuilder]: For program point fibo1EXIT(lines 9 17) no Hoare annotation was computed. [2023-11-06 22:53:19,261 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:53:19,263 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-06 22:53:19,273 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:53:19 BoogieIcfgContainer [2023-11-06 22:53:19,273 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-06 22:53:19,273 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-06 22:53:19,274 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-06 22:53:19,274 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-06 22:53:19,274 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:52:55" (3/4) ... [2023-11-06 22:53:19,277 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-06 22:53:19,282 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo2 [2023-11-06 22:53:19,282 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo1 [2023-11-06 22:53:19,287 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2023-11-06 22:53:19,288 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-06 22:53:19,288 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-06 22:53:19,288 INFO L939 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-06 22:53:19,347 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.graphml [2023-11-06 22:53:19,348 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/bin/uautomizer-verify-WvqO1wxjHP/witness.graphml.yaml [2023-11-06 22:53:19,348 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-06 22:53:19,349 INFO L158 Benchmark]: Toolchain (without parser) took 24462.85ms. Allocated memory was 142.6MB in the beginning and 293.6MB in the end (delta: 151.0MB). Free memory was 97.1MB in the beginning and 127.4MB in the end (delta: -30.2MB). Peak memory consumption was 120.9MB. Max. memory is 16.1GB. [2023-11-06 22:53:19,349 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 142.6MB. Free memory is still 117.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:53:19,349 INFO L158 Benchmark]: CACSL2BoogieTranslator took 271.02ms. Allocated memory is still 142.6MB. Free memory was 96.8MB in the beginning and 86.6MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 22:53:19,350 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.84ms. Allocated memory is still 142.6MB. Free memory was 86.5MB in the beginning and 85.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-06 22:53:19,350 INFO L158 Benchmark]: Boogie Preprocessor took 31.22ms. Allocated memory is still 142.6MB. Free memory was 85.2MB in the beginning and 84.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:53:19,350 INFO L158 Benchmark]: RCFGBuilder took 361.68ms. Allocated memory is still 142.6MB. Free memory was 84.1MB in the beginning and 72.8MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-06 22:53:19,351 INFO L158 Benchmark]: TraceAbstraction took 23680.37ms. Allocated memory was 142.6MB in the beginning and 293.6MB in the end (delta: 151.0MB). Free memory was 72.2MB in the beginning and 130.5MB in the end (delta: -58.3MB). Peak memory consumption was 135.9MB. Max. memory is 16.1GB. [2023-11-06 22:53:19,351 INFO L158 Benchmark]: Witness Printer took 74.67ms. Allocated memory is still 293.6MB. Free memory was 130.5MB in the beginning and 127.4MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-06 22:53:19,352 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 142.6MB. Free memory is still 117.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 271.02ms. Allocated memory is still 142.6MB. Free memory was 96.8MB in the beginning and 86.6MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.84ms. Allocated memory is still 142.6MB. Free memory was 86.5MB in the beginning and 85.2MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 31.22ms. Allocated memory is still 142.6MB. Free memory was 85.2MB in the beginning and 84.1MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 361.68ms. Allocated memory is still 142.6MB. Free memory was 84.1MB in the beginning and 72.8MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 23680.37ms. Allocated memory was 142.6MB in the beginning and 293.6MB in the end (delta: 151.0MB). Free memory was 72.2MB in the beginning and 130.5MB in the end (delta: -58.3MB). Peak memory consumption was 135.9MB. Max. memory is 16.1GB. * Witness Printer took 74.67ms. Allocated memory is still 293.6MB. Free memory was 130.5MB in the beginning and 127.4MB 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: 23.6s, OverallIterations: 27, TraceHistogramMax: 8, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 5.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1455 SdHoareTripleChecker+Valid, 3.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1417 mSDsluCounter, 5797 SdHoareTripleChecker+Invalid, 2.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4840 mSDsCounter, 344 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4415 IncrementalHoareTripleChecker+Invalid, 4759 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 344 mSolverCounterUnsat, 957 mSDtfsCounter, 4415 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2416 GetRequests, 1972 SyntacticMatches, 70 SemanticMatches, 374 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2752 ImplicationChecksByTransitivity, 4.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=171occurred in iteration=18, InterpolantAutomatonStates: 273, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 27 MinimizatonAttempts, 206 StatesRemovedByMinimization, 24 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 305 PreInvPairs, 401 NumberOfFragments, 111 HoareAnnotationTreeSize, 305 FomulaSimplifications, 7242 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 8 FomulaSimplificationsInter, 786 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 12.2s InterpolantComputationTime, 2454 NumberOfCodeBlocks, 2454 NumberOfCodeBlocksAsserted, 43 NumberOfCheckSat, 3296 ConstructedInterpolants, 0 QuantifiedInterpolants, 6866 SizeOfPredicates, 32 NumberOfNonLiveVariables, 2126 ConjunctsInSsa, 162 ConjunctsInUnsatCore, 52 InterpolantComputations, 16 PerfectInterpolantSequences, 2921/3709 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 22:53:19,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7ac37f30-ea03-42b6-bbbf-b89e7ca410ad/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