./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_2-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30e01a73 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_45779b7f-48da-497d-8fad-f94ad8e2bcfa/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45779b7f-48da-497d-8fad-f94ad8e2bcfa/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45779b7f-48da-497d-8fad-f94ad8e2bcfa/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45779b7f-48da-497d-8fad-f94ad8e2bcfa/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_2-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45779b7f-48da-497d-8fad-f94ad8e2bcfa/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45779b7f-48da-497d-8fad-f94ad8e2bcfa/bin/uautomizer-verify-zZY32mL2XJ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 2c47a69833f1a958e38c27482b535b2d176258e52297f9899a8926a996c05520 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 22:37:39,593 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 22:37:39,669 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45779b7f-48da-497d-8fad-f94ad8e2bcfa/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-23 22:37:39,700 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 22:37:39,702 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 22:37:39,746 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 22:37:39,752 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 22:37:39,753 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 22:37:39,754 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 22:37:39,760 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 22:37:39,760 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 22:37:39,762 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 22:37:39,763 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 22:37:39,765 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 22:37:39,765 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 22:37:39,766 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 22:37:39,766 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 22:37:39,767 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 22:37:39,768 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 22:37:39,768 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 22:37:39,769 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 22:37:39,770 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 22:37:39,770 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 22:37:39,771 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 22:37:39,771 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 22:37:39,772 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 22:37:39,772 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 22:37:39,773 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 22:37:39,774 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 22:37:39,775 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 22:37:39,776 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 22:37:39,777 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 22:37:39,777 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 22:37:39,777 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:37:39,778 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 22:37:39,778 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 22:37:39,779 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 22:37:39,779 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 22:37:39,779 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 22:37:39,780 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 22:37:39,780 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 22:37:39,781 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 22:37:39,781 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 22:37:39,782 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 22:37:39,782 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_45779b7f-48da-497d-8fad-f94ad8e2bcfa/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45779b7f-48da-497d-8fad-f94ad8e2bcfa/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c47a69833f1a958e38c27482b535b2d176258e52297f9899a8926a996c05520 [2023-11-23 22:37:40,065 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 22:37:40,093 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 22:37:40,096 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 22:37:40,098 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 22:37:40,099 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 22:37:40,100 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45779b7f-48da-497d-8fad-f94ad8e2bcfa/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/recursive-simple/fibo_2calls_2-1.c [2023-11-23 22:37:43,338 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 22:37:43,544 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 22:37:43,544 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45779b7f-48da-497d-8fad-f94ad8e2bcfa/sv-benchmarks/c/recursive-simple/fibo_2calls_2-1.c [2023-11-23 22:37:43,552 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45779b7f-48da-497d-8fad-f94ad8e2bcfa/bin/uautomizer-verify-zZY32mL2XJ/data/ba04196c3/639cc40625e54f3ab0f511156c8ea98a/FLAG7122b048c [2023-11-23 22:37:43,567 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45779b7f-48da-497d-8fad-f94ad8e2bcfa/bin/uautomizer-verify-zZY32mL2XJ/data/ba04196c3/639cc40625e54f3ab0f511156c8ea98a [2023-11-23 22:37:43,570 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 22:37:43,572 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 22:37:43,574 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 22:37:43,574 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 22:37:43,580 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 22:37:43,581 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:37:43" (1/1) ... [2023-11-23 22:37:43,582 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48cde97d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:43, skipping insertion in model container [2023-11-23 22:37:43,582 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:37:43" (1/1) ... [2023-11-23 22:37:43,604 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 22:37:43,768 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:37:43,779 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 22:37:43,795 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:37:43,810 INFO L206 MainTranslator]: Completed translation [2023-11-23 22:37:43,811 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:43 WrapperNode [2023-11-23 22:37:43,811 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 22:37:43,812 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 22:37:43,813 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 22:37:43,813 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 22:37:43,821 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:43" (1/1) ... [2023-11-23 22:37:43,828 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:43" (1/1) ... [2023-11-23 22:37:43,843 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 21 [2023-11-23 22:37:43,844 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 22:37:43,844 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 22:37:43,845 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 22:37:43,845 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 22:37:43,856 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:43" (1/1) ... [2023-11-23 22:37:43,856 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:43" (1/1) ... [2023-11-23 22:37:43,857 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:43" (1/1) ... [2023-11-23 22:37:43,872 INFO L189 HeapSplitter]: Split 2 memory accesses to 1 slices as follows [2] [2023-11-23 22:37:43,878 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:43" (1/1) ... [2023-11-23 22:37:43,878 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:43" (1/1) ... [2023-11-23 22:37:43,881 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:43" (1/1) ... [2023-11-23 22:37:43,883 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:43" (1/1) ... [2023-11-23 22:37:43,884 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:43" (1/1) ... [2023-11-23 22:37:43,885 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:43" (1/1) ... [2023-11-23 22:37:43,887 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 22:37:43,888 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 22:37:43,888 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 22:37:43,888 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 22:37:43,889 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:43" (1/1) ... [2023-11-23 22:37:43,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:37:43,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45779b7f-48da-497d-8fad-f94ad8e2bcfa/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:37:43,930 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45779b7f-48da-497d-8fad-f94ad8e2bcfa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 22:37:43,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45779b7f-48da-497d-8fad-f94ad8e2bcfa/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 22:37:43,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 22:37:43,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 22:37:43,991 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2023-11-23 22:37:43,991 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2023-11-23 22:37:43,991 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2023-11-23 22:37:43,991 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2023-11-23 22:37:43,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 22:37:43,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 22:37:44,073 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 22:37:44,082 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 22:37:44,277 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 22:37:44,305 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 22:37:44,306 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-23 22:37:44,306 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:37:44 BoogieIcfgContainer [2023-11-23 22:37:44,306 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 22:37:44,310 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 22:37:44,310 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 22:37:44,314 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 22:37:44,314 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:37:43" (1/3) ... [2023-11-23 22:37:44,315 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@507bc515 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:37:44, skipping insertion in model container [2023-11-23 22:37:44,315 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:37:43" (2/3) ... [2023-11-23 22:37:44,316 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@507bc515 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:37:44, skipping insertion in model container [2023-11-23 22:37:44,316 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:37:44" (3/3) ... [2023-11-23 22:37:44,317 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_2-1.c [2023-11-23 22:37:44,339 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 22:37:44,340 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-23 22:37:44,395 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 22:37:44,403 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@55990890, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 22:37:44,403 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-11-23 22:37:44,408 INFO L276 IsEmpty]: Start isEmpty. Operand has 48 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 40 states have internal predecessors, (45), 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) [2023-11-23 22:37:44,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-23 22:37:44,416 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:37:44,417 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-23 22:37:44,418 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-23 22:37:44,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:37:44,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1021543012, now seen corresponding path program 1 times [2023-11-23 22:37:44,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:37:44,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222881036] [2023-11-23 22:37:44,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:37:44,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:37:44,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:44,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:37:44,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:37:44,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222881036] [2023-11-23 22:37:44,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222881036] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:37:44,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:37:44,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:37:44,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423517788] [2023-11-23 22:37:44,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:37:44,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 22:37:44,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:37:44,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 22:37:44,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:37:44,779 INFO L87 Difference]: Start difference. First operand has 48 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 40 states have internal predecessors, (45), 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 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2023-11-23 22:37:44,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:37:44,910 INFO L93 Difference]: Finished difference Result 75 states and 85 transitions. [2023-11-23 22:37:44,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 22:37:44,913 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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 6 [2023-11-23 22:37:44,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:37:44,922 INFO L225 Difference]: With dead ends: 75 [2023-11-23 22:37:44,922 INFO L226 Difference]: Without dead ends: 59 [2023-11-23 22:37:44,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 22:37:44,929 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 27 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 22:37:44,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 173 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 22:37:44,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-11-23 22:37:44,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 57. [2023-11-23 22:37:44,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 36 states have (on average 1.4722222222222223) internal successors, (53), 47 states have internal predecessors, (53), 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) [2023-11-23 22:37:44,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2023-11-23 22:37:44,977 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 6 [2023-11-23 22:37:44,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:37:44,978 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2023-11-23 22:37:44,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 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) [2023-11-23 22:37:44,979 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2023-11-23 22:37:44,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-23 22:37:44,980 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:37:44,980 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:37:44,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 22:37:44,981 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-23 22:37:44,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:37:44,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1070030294, now seen corresponding path program 1 times [2023-11-23 22:37:44,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:37:44,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745281440] [2023-11-23 22:37:44,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:37:44,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:37:44,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:45,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:37:45,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:37:45,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [745281440] [2023-11-23 22:37:45,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [745281440] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:37:45,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:37:45,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:37:45,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282322111] [2023-11-23 22:37:45,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:37:45,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:37:45,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:37:45,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:37:45,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:37:45,036 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) [2023-11-23 22:37:45,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:37:45,083 INFO L93 Difference]: Finished difference Result 59 states and 71 transitions. [2023-11-23 22:37:45,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:37:45,091 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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 12 [2023-11-23 22:37:45,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:37:45,093 INFO L225 Difference]: With dead ends: 59 [2023-11-23 22:37:45,093 INFO L226 Difference]: Without dead ends: 57 [2023-11-23 22:37:45,094 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 [2023-11-23 22:37:45,096 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 14 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 22:37:45,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 72 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 22:37:45,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2023-11-23 22:37:45,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 55. [2023-11-23 22:37:45,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 45 states have internal predecessors, (51), 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) [2023-11-23 22:37:45,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2023-11-23 22:37:45,119 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 12 [2023-11-23 22:37:45,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:37:45,120 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2023-11-23 22:37:45,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 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) [2023-11-23 22:37:45,121 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2023-11-23 22:37:45,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-23 22:37:45,122 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:37:45,122 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:37:45,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 22:37:45,123 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-23 22:37:45,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:37:45,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1188799193, now seen corresponding path program 1 times [2023-11-23 22:37:45,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:37:45,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000505971] [2023-11-23 22:37:45,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:37:45,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:37:45,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:45,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:37:45,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:37:45,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000505971] [2023-11-23 22:37:45,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000505971] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:37:45,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:37:45,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 22:37:45,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815536125] [2023-11-23 22:37:45,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:37:45,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 22:37:45,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:37:45,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 22:37:45,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-23 22:37:45,278 INFO L87 Difference]: Start difference. First operand 55 states and 64 transitions. Second operand has 7 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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) [2023-11-23 22:37:45,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:37:45,443 INFO L93 Difference]: Finished difference Result 78 states and 89 transitions. [2023-11-23 22:37:45,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 22:37:45,443 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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 13 [2023-11-23 22:37:45,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:37:45,449 INFO L225 Difference]: With dead ends: 78 [2023-11-23 22:37:45,452 INFO L226 Difference]: Without dead ends: 76 [2023-11-23 22:37:45,455 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-23 22:37:45,461 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 48 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 22:37:45,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 179 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 22:37:45,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2023-11-23 22:37:45,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 70. [2023-11-23 22:37:45,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 48 states have (on average 1.3958333333333333) internal successors, (67), 57 states have internal predecessors, (67), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-23 22:37:45,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 84 transitions. [2023-11-23 22:37:45,476 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 84 transitions. Word has length 13 [2023-11-23 22:37:45,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:37:45,476 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 84 transitions. [2023-11-23 22:37:45,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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) [2023-11-23 22:37:45,477 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 84 transitions. [2023-11-23 22:37:45,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-11-23 22:37:45,478 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:37:45,478 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:37:45,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 22:37:45,479 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-23 22:37:45,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:37:45,480 INFO L85 PathProgramCache]: Analyzing trace with hash 1483309798, now seen corresponding path program 1 times [2023-11-23 22:37:45,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:37:45,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883648419] [2023-11-23 22:37:45,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:37:45,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:37:45,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:45,525 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 22:37:45,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:37:45,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883648419] [2023-11-23 22:37:45,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883648419] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:37:45,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:37:45,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:37:45,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053872669] [2023-11-23 22:37:45,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:37:45,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:37:45,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:37:45,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:37:45,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:37:45,529 INFO L87 Difference]: Start difference. First operand 70 states and 84 transitions. Second operand has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:37:45,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:37:45,566 INFO L93 Difference]: Finished difference Result 72 states and 89 transitions. [2023-11-23 22:37:45,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:37:45,567 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2023-11-23 22:37:45,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:37:45,570 INFO L225 Difference]: With dead ends: 72 [2023-11-23 22:37:45,570 INFO L226 Difference]: Without dead ends: 70 [2023-11-23 22:37:45,571 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 [2023-11-23 22:37:45,574 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 14 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 22:37:45,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 68 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 22:37:45,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-11-23 22:37:45,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2023-11-23 22:37:45,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 48 states have (on average 1.3541666666666667) internal successors, (65), 55 states have internal predecessors, (65), 9 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2023-11-23 22:37:45,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 82 transitions. [2023-11-23 22:37:45,602 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 82 transitions. Word has length 18 [2023-11-23 22:37:45,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:37:45,603 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 82 transitions. [2023-11-23 22:37:45,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.0) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:37:45,604 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 82 transitions. [2023-11-23 22:37:45,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2023-11-23 22:37:45,605 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:37:45,609 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:37:45,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 22:37:45,610 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-23 22:37:45,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:37:45,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1262036431, now seen corresponding path program 1 times [2023-11-23 22:37:45,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:37:45,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728307652] [2023-11-23 22:37:45,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:37:45,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:37:45,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:45,794 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:37:45,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:37:45,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728307652] [2023-11-23 22:37:45,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728307652] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:37:45,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:37:45,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 22:37:45,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165919362] [2023-11-23 22:37:45,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:37:45,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 22:37:45,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:37:45,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 22:37:45,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-23 22:37:45,797 INFO L87 Difference]: Start difference. First operand 68 states and 82 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:37:45,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:37:45,898 INFO L93 Difference]: Finished difference Result 84 states and 102 transitions. [2023-11-23 22:37:45,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 22:37:45,899 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2023-11-23 22:37:45,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:37:45,902 INFO L225 Difference]: With dead ends: 84 [2023-11-23 22:37:45,902 INFO L226 Difference]: Without dead ends: 24 [2023-11-23 22:37:45,904 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-11-23 22:37:45,906 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 28 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 22:37:45,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 52 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 22:37:45,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-11-23 22:37:45,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2023-11-23 22:37:45,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 16 states have (on average 1.125) internal successors, (18), 17 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 22:37:45,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2023-11-23 22:37:45,925 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 19 [2023-11-23 22:37:45,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:37:45,926 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2023-11-23 22:37:45,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:37:45,926 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2023-11-23 22:37:45,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-23 22:37:45,927 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:37:45,927 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:37:45,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 22:37:45,928 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-23 22:37:45,929 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:37:45,929 INFO L85 PathProgramCache]: Analyzing trace with hash 1317113808, now seen corresponding path program 1 times [2023-11-23 22:37:45,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:37:45,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034797253] [2023-11-23 22:37:45,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:37:45,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:37:45,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:46,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 22:37:46,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:46,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 22:37:46,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:46,106 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 22:37:46,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:37:46,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034797253] [2023-11-23 22:37:46,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034797253] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:37:46,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:37:46,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 22:37:46,107 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442227906] [2023-11-23 22:37:46,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:37:46,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 22:37:46,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:37:46,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 22:37:46,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:37:46,109 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 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) [2023-11-23 22:37:46,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:37:46,140 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2023-11-23 22:37:46,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 22:37:46,141 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 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 22 [2023-11-23 22:37:46,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:37:46,142 INFO L225 Difference]: With dead ends: 38 [2023-11-23 22:37:46,142 INFO L226 Difference]: Without dead ends: 33 [2023-11-23 22:37:46,142 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 [2023-11-23 22:37:46,143 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 6 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 22:37:46,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 56 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 22:37:46,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2023-11-23 22:37:46,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28. [2023-11-23 22:37:46,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 20 states have (on average 1.1) internal successors, (22), 22 states have internal predecessors, (22), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2023-11-23 22:37:46,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2023-11-23 22:37:46,151 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 22 [2023-11-23 22:37:46,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:37:46,151 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2023-11-23 22:37:46,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 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) [2023-11-23 22:37:46,152 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2023-11-23 22:37:46,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-23 22:37:46,153 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:37:46,153 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] [2023-11-23 22:37:46,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 22:37:46,153 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-23 22:37:46,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:37:46,154 INFO L85 PathProgramCache]: Analyzing trace with hash -2108197165, now seen corresponding path program 1 times [2023-11-23 22:37:46,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:37:46,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265809064] [2023-11-23 22:37:46,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:37:46,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:37:46,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:46,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 22:37:46,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:46,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 22:37:46,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:46,278 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 22:37:46,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:37:46,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265809064] [2023-11-23 22:37:46,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265809064] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:37:46,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [962078112] [2023-11-23 22:37:46,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:37:46,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:37:46,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45779b7f-48da-497d-8fad-f94ad8e2bcfa/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:37:46,288 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45779b7f-48da-497d-8fad-f94ad8e2bcfa/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:37:46,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45779b7f-48da-497d-8fad-f94ad8e2bcfa/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 22:37:46,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:46,353 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 22:37:46,364 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:37:46,496 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:37:46,496 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:37:46,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [962078112] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:37:46,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 22:37:46,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2023-11-23 22:37:46,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430100671] [2023-11-23 22:37:46,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:37:46,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 22:37:46,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:37:46,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 22:37:46,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-23 22:37:46,502 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 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) [2023-11-23 22:37:46,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:37:46,593 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2023-11-23 22:37:46,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 22:37:46,593 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 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 23 [2023-11-23 22:37:46,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:37:46,594 INFO L225 Difference]: With dead ends: 40 [2023-11-23 22:37:46,595 INFO L226 Difference]: Without dead ends: 24 [2023-11-23 22:37:46,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-23 22:37:46,596 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 24 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 22:37:46,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 42 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 22:37:46,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-11-23 22:37:46,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2023-11-23 22:37:46,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 19 states have internal predecessors, (19), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 22:37:46,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2023-11-23 22:37:46,603 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 23 [2023-11-23 22:37:46,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:37:46,603 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2023-11-23 22:37:46,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 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) [2023-11-23 22:37:46,603 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2023-11-23 22:37:46,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-23 22:37:46,604 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:37:46,605 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] [2023-11-23 22:37:46,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45779b7f-48da-497d-8fad-f94ad8e2bcfa/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 22:37:46,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45779b7f-48da-497d-8fad-f94ad8e2bcfa/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:37:46,829 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-23 22:37:46,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:37:46,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1981525409, now seen corresponding path program 2 times [2023-11-23 22:37:46,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:37:46,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825619160] [2023-11-23 22:37:46,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:37:46,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:37:46,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:46,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 22:37:46,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:46,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 22:37:46,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:46,982 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 22:37:46,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:37:46,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825619160] [2023-11-23 22:37:46,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825619160] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:37:46,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49163499] [2023-11-23 22:37:46,983 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 22:37:46,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:37:46,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45779b7f-48da-497d-8fad-f94ad8e2bcfa/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:37:46,989 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45779b7f-48da-497d-8fad-f94ad8e2bcfa/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:37:47,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45779b7f-48da-497d-8fad-f94ad8e2bcfa/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 22:37:47,035 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 22:37:47,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 22:37:47,036 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 22:37:47,038 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:37:47,118 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 22:37:47,119 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:37:47,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49163499] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:37:47,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 22:37:47,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2023-11-23 22:37:47,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733938945] [2023-11-23 22:37:47,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:37:47,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 22:37:47,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:37:47,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 22:37:47,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-23 22:37:47,121 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 22:37:47,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:37:47,143 INFO L93 Difference]: Finished difference Result 24 states and 25 transitions. [2023-11-23 22:37:47,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 22:37:47,149 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2023-11-23 22:37:47,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:37:47,150 INFO L225 Difference]: With dead ends: 24 [2023-11-23 22:37:47,151 INFO L226 Difference]: Without dead ends: 23 [2023-11-23 22:37:47,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-23 22:37:47,152 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 4 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 22:37:47,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 46 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 22:37:47,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2023-11-23 22:37:47,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2023-11-23 22:37:47,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 18 states have internal predecessors, (18), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-23 22:37:47,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2023-11-23 22:37:47,167 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 23 [2023-11-23 22:37:47,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:37:47,167 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2023-11-23 22:37:47,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 22:37:47,169 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2023-11-23 22:37:47,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-23 22:37:47,170 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:37:47,170 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] [2023-11-23 22:37:47,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45779b7f-48da-497d-8fad-f94ad8e2bcfa/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 22:37:47,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45779b7f-48da-497d-8fad-f94ad8e2bcfa/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:37:47,385 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-23 22:37:47,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:37:47,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1297745634, now seen corresponding path program 1 times [2023-11-23 22:37:47,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:37:47,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599426948] [2023-11-23 22:37:47,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:37:47,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:37:47,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:47,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 22:37:47,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:47,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 22:37:47,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:47,506 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 22:37:47,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:37:47,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599426948] [2023-11-23 22:37:47,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599426948] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:37:47,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043606750] [2023-11-23 22:37:47,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:37:47,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:37:47,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45779b7f-48da-497d-8fad-f94ad8e2bcfa/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:37:47,509 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45779b7f-48da-497d-8fad-f94ad8e2bcfa/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:37:47,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45779b7f-48da-497d-8fad-f94ad8e2bcfa/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 22:37:47,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:47,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 22:37:47,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:37:47,653 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 22:37:47,653 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:37:47,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043606750] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:37:47,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 22:37:47,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2023-11-23 22:37:47,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772570636] [2023-11-23 22:37:47,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:37:47,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 22:37:47,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:37:47,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 22:37:47,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-23 22:37:47,656 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 22:37:47,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:37:47,678 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2023-11-23 22:37:47,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 22:37:47,679 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2023-11-23 22:37:47,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:37:47,679 INFO L225 Difference]: With dead ends: 27 [2023-11-23 22:37:47,679 INFO L226 Difference]: Without dead ends: 21 [2023-11-23 22:37:47,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-23 22:37:47,681 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 3 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 22:37:47,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 47 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 22:37:47,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2023-11-23 22:37:47,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2023-11-23 22:37:47,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.0) internal successors, (16), 16 states have internal predecessors, (16), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 22:37:47,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2023-11-23 22:37:47,685 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 24 [2023-11-23 22:37:47,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:37:47,686 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2023-11-23 22:37:47,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-23 22:37:47,686 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2023-11-23 22:37:47,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-11-23 22:37:47,687 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 22:37:47,687 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] [2023-11-23 22:37:47,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45779b7f-48da-497d-8fad-f94ad8e2bcfa/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 22:37:47,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45779b7f-48da-497d-8fad-f94ad8e2bcfa/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:37:47,907 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-23 22:37:47,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:37:47,908 INFO L85 PathProgramCache]: Analyzing trace with hash 1914786177, now seen corresponding path program 1 times [2023-11-23 22:37:47,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:37:47,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231083373] [2023-11-23 22:37:47,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:37:47,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:37:47,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:47,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-23 22:37:47,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:47,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-23 22:37:47,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:37:47,979 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-23 22:37:47,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:37:47,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231083373] [2023-11-23 22:37:47,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231083373] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:37:47,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:37:47,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 22:37:47,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468519697] [2023-11-23 22:37:47,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:37:47,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 22:37:47,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:37:47,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 22:37:47,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 22:37:47,982 INFO L87 Difference]: Start difference. First operand 21 states and 21 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) [2023-11-23 22:37:47,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 22:37:47,994 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2023-11-23 22:37:47,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 22:37:47,995 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 [2023-11-23 22:37:47,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 22:37:47,995 INFO L225 Difference]: With dead ends: 21 [2023-11-23 22:37:47,996 INFO L226 Difference]: Without dead ends: 0 [2023-11-23 22:37:47,996 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 [2023-11-23 22:37:47,997 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-23 22:37:47,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-23 22:37:47,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-23 22:37:47,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-23 22:37:47,999 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) [2023-11-23 22:37:47,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-23 22:37:48,000 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2023-11-23 22:37:48,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 22:37:48,000 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-23 22:37:48,000 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) [2023-11-23 22:37:48,000 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-23 22:37:48,000 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-23 22:37:48,003 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 12 remaining) [2023-11-23 22:37:48,003 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2023-11-23 22:37:48,003 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2023-11-23 22:37:48,004 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2023-11-23 22:37:48,004 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining) [2023-11-23 22:37:48,004 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 12 remaining) [2023-11-23 22:37:48,004 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 12 remaining) [2023-11-23 22:37:48,005 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 12 remaining) [2023-11-23 22:37:48,005 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2023-11-23 22:37:48,005 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2023-11-23 22:37:48,005 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2023-11-23 22:37:48,006 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2023-11-23 22:37:48,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-23 22:37:48,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-23 22:37:48,055 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-23 22:37:48,056 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-23 22:37:48,056 INFO L899 garLoopResultBuilder]: For program point L40(lines 40 42) no Hoare annotation was computed. [2023-11-23 22:37:48,056 INFO L895 garLoopResultBuilder]: At program point L39(line 39) the Hoare annotation is: (= 2 |ULTIMATE.start_main_~x~0#1|) [2023-11-23 22:37:48,056 INFO L899 garLoopResultBuilder]: For program point L39-1(line 39) no Hoare annotation was computed. [2023-11-23 22:37:48,056 INFO L899 garLoopResultBuilder]: For program point L40-2(lines 40 42) no Hoare annotation was computed. [2023-11-23 22:37:48,057 INFO L899 garLoopResultBuilder]: For program point fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2023-11-23 22:37:48,057 INFO L899 garLoopResultBuilder]: For program point L25(line 25) no Hoare annotation was computed. [2023-11-23 22:37:48,057 INFO L899 garLoopResultBuilder]: For program point fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2023-11-23 22:37:48,057 INFO L899 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2023-11-23 22:37:48,057 INFO L895 garLoopResultBuilder]: At program point L25-2(line 25) the Hoare annotation is: (not (<= |fibo2_#in~n| 1)) [2023-11-23 22:37:48,058 INFO L899 garLoopResultBuilder]: For program point L25-3(line 25) no Hoare annotation was computed. [2023-11-23 22:37:48,058 INFO L899 garLoopResultBuilder]: For program point L25-4(line 25) no Hoare annotation was computed. [2023-11-23 22:37:48,058 INFO L899 garLoopResultBuilder]: For program point L25-5(line 25) no Hoare annotation was computed. [2023-11-23 22:37:48,058 INFO L895 garLoopResultBuilder]: At program point L25-6(line 25) the Hoare annotation is: (not (<= |fibo2_#in~n| 1)) [2023-11-23 22:37:48,058 INFO L899 garLoopResultBuilder]: For program point L25-7(line 25) no Hoare annotation was computed. [2023-11-23 22:37:48,058 INFO L899 garLoopResultBuilder]: For program point L25-8(line 25) no Hoare annotation was computed. [2023-11-23 22:37:48,059 INFO L899 garLoopResultBuilder]: For program point L25-9(line 25) no Hoare annotation was computed. [2023-11-23 22:37:48,059 INFO L899 garLoopResultBuilder]: For program point fibo2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2023-11-23 22:37:48,059 INFO L899 garLoopResultBuilder]: For program point fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2023-11-23 22:37:48,059 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 19 27) the Hoare annotation is: true [2023-11-23 22:37:48,059 INFO L899 garLoopResultBuilder]: For program point fibo2EXIT(lines 19 27) no Hoare annotation was computed. [2023-11-23 22:37:48,059 INFO L899 garLoopResultBuilder]: For program point fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2023-11-23 22:37:48,060 INFO L899 garLoopResultBuilder]: For program point L22(lines 22 26) no Hoare annotation was computed. [2023-11-23 22:37:48,060 INFO L899 garLoopResultBuilder]: For program point L20(lines 20 26) no Hoare annotation was computed. [2023-11-23 22:37:48,060 INFO L899 garLoopResultBuilder]: For program point fibo2FINAL(lines 19 27) no Hoare annotation was computed. [2023-11-23 22:37:48,060 INFO L899 garLoopResultBuilder]: For program point fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2023-11-23 22:37:48,060 INFO L899 garLoopResultBuilder]: For program point fibo1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2023-11-23 22:37:48,060 INFO L899 garLoopResultBuilder]: For program point fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2023-11-23 22:37:48,061 INFO L899 garLoopResultBuilder]: For program point L15(line 15) no Hoare annotation was computed. [2023-11-23 22:37:48,061 INFO L899 garLoopResultBuilder]: For program point L15-1(line 15) no Hoare annotation was computed. [2023-11-23 22:37:48,061 INFO L895 garLoopResultBuilder]: At program point L15-2(line 15) the Hoare annotation is: (or (not (= 2 |fibo1_#in~n|)) (= fibo1_~n 2)) [2023-11-23 22:37:48,061 INFO L899 garLoopResultBuilder]: For program point L15-3(line 15) no Hoare annotation was computed. [2023-11-23 22:37:48,061 INFO L899 garLoopResultBuilder]: For program point L15-4(line 15) no Hoare annotation was computed. [2023-11-23 22:37:48,062 INFO L899 garLoopResultBuilder]: For program point fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2023-11-23 22:37:48,062 INFO L899 garLoopResultBuilder]: For program point fibo1FINAL(lines 9 17) no Hoare annotation was computed. [2023-11-23 22:37:48,062 INFO L899 garLoopResultBuilder]: For program point L15-5(line 15) no Hoare annotation was computed. [2023-11-23 22:37:48,062 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 9 17) the Hoare annotation is: true [2023-11-23 22:37:48,062 INFO L895 garLoopResultBuilder]: At program point L15-6(line 15) the Hoare annotation is: (or (not (= 2 |fibo1_#in~n|)) (and (= |fibo1_#t~ret4| 1) (= fibo1_~n 2))) [2023-11-23 22:37:48,062 INFO L899 garLoopResultBuilder]: For program point L15-7(line 15) no Hoare annotation was computed. [2023-11-23 22:37:48,063 INFO L899 garLoopResultBuilder]: For program point L15-8(line 15) no Hoare annotation was computed. [2023-11-23 22:37:48,063 INFO L899 garLoopResultBuilder]: For program point L15-9(line 15) no Hoare annotation was computed. [2023-11-23 22:37:48,063 INFO L899 garLoopResultBuilder]: For program point fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2023-11-23 22:37:48,063 INFO L899 garLoopResultBuilder]: For program point fibo1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2023-11-23 22:37:48,063 INFO L899 garLoopResultBuilder]: For program point fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2023-11-23 22:37:48,064 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 16) no Hoare annotation was computed. [2023-11-23 22:37:48,064 INFO L899 garLoopResultBuilder]: For program point L10(lines 10 16) no Hoare annotation was computed. [2023-11-23 22:37:48,064 INFO L899 garLoopResultBuilder]: For program point fibo1EXIT(lines 9 17) no Hoare annotation was computed. [2023-11-23 22:37:48,067 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:37:48,070 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 22:37:48,075 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 10:37:48 BoogieIcfgContainer [2023-11-23 22:37:48,075 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 22:37:48,076 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 22:37:48,076 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 22:37:48,076 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 22:37:48,077 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:37:44" (3/4) ... [2023-11-23 22:37:48,079 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-23 22:37:48,083 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo2 [2023-11-23 22:37:48,083 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo1 [2023-11-23 22:37:48,089 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2023-11-23 22:37:48,089 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-23 22:37:48,089 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-23 22:37:48,090 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-23 22:37:48,181 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45779b7f-48da-497d-8fad-f94ad8e2bcfa/bin/uautomizer-verify-zZY32mL2XJ/witness.graphml [2023-11-23 22:37:48,182 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45779b7f-48da-497d-8fad-f94ad8e2bcfa/bin/uautomizer-verify-zZY32mL2XJ/witness.yml [2023-11-23 22:37:48,182 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 22:37:48,183 INFO L158 Benchmark]: Toolchain (without parser) took 4610.68ms. Allocated memory was 144.7MB in the beginning and 174.1MB in the end (delta: 29.4MB). Free memory was 101.0MB in the beginning and 83.6MB in the end (delta: 17.3MB). Peak memory consumption was 49.6MB. Max. memory is 16.1GB. [2023-11-23 22:37:48,183 INFO L158 Benchmark]: CDTParser took 1.57ms. Allocated memory is still 107.0MB. Free memory was 58.9MB in the beginning and 58.8MB in the end (delta: 151.1kB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 22:37:48,183 INFO L158 Benchmark]: CACSL2BoogieTranslator took 237.99ms. Allocated memory is still 144.7MB. Free memory was 100.7MB in the beginning and 90.5MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-23 22:37:48,184 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.69ms. Allocated memory is still 144.7MB. Free memory was 90.5MB in the beginning and 89.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 22:37:48,184 INFO L158 Benchmark]: Boogie Preprocessor took 42.49ms. Allocated memory is still 144.7MB. Free memory was 89.1MB in the beginning and 87.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 22:37:48,185 INFO L158 Benchmark]: RCFGBuilder took 418.89ms. Allocated memory is still 144.7MB. Free memory was 87.4MB in the beginning and 74.5MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-23 22:37:48,185 INFO L158 Benchmark]: TraceAbstraction took 3765.69ms. Allocated memory was 144.7MB in the beginning and 174.1MB in the end (delta: 29.4MB). Free memory was 73.8MB in the beginning and 88.9MB in the end (delta: -15.1MB). Peak memory consumption was 16.0MB. Max. memory is 16.1GB. [2023-11-23 22:37:48,186 INFO L158 Benchmark]: Witness Printer took 106.23ms. Allocated memory is still 174.1MB. Free memory was 88.9MB in the beginning and 83.6MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-23 22:37:48,188 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.57ms. Allocated memory is still 107.0MB. Free memory was 58.9MB in the beginning and 58.8MB in the end (delta: 151.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 237.99ms. Allocated memory is still 144.7MB. Free memory was 100.7MB in the beginning and 90.5MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.69ms. Allocated memory is still 144.7MB. Free memory was 90.5MB in the beginning and 89.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.49ms. Allocated memory is still 144.7MB. Free memory was 89.1MB in the beginning and 87.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 418.89ms. Allocated memory is still 144.7MB. Free memory was 87.4MB in the beginning and 74.5MB in the end (delta: 12.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3765.69ms. Allocated memory was 144.7MB in the beginning and 174.1MB in the end (delta: 29.4MB). Free memory was 73.8MB in the beginning and 88.9MB in the end (delta: -15.1MB). Peak memory consumption was 16.0MB. Max. memory is 16.1GB. * Witness Printer took 106.23ms. Allocated memory is still 174.1MB. Free memory was 88.9MB in the beginning and 83.6MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 48 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 3.7s, OverallIterations: 10, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 175 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 168 mSDsluCounter, 779 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 534 mSDsCounter, 37 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 375 IncrementalHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 37 mSolverCounterUnsat, 245 mSDtfsCounter, 375 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 140 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred in iteration=3, InterpolantAutomatonStates: 55, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 19 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 34 PreInvPairs, 35 NumberOfFragments, 33 HoareAnnotationTreeSize, 34 FomulaSimplifications, 34 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 19 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 255 NumberOfCodeBlocks, 255 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 242 ConstructedInterpolants, 0 QuantifiedInterpolants, 542 SizeOfPredicates, 2 NumberOfNonLiveVariables, 199 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 13 InterpolantComputations, 10 PerfectInterpolantSequences, 36/42 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-23 22:37:48,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_45779b7f-48da-497d-8fad-f94ad8e2bcfa/bin/uautomizer-verify-zZY32mL2XJ/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