./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_6-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc 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_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_6-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme --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 31de98bafea1eb3233157f378400eba30060b6561e9e0a6257ecfebe8e53877a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:50:50,132 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:50:50,225 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 11:50:50,238 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:50:50,239 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:50:50,289 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:50:50,290 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:50:50,291 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:50:50,292 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:50:50,297 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:50:50,298 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:50:50,299 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:50:50,300 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:50:50,302 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:50:50,302 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:50:50,303 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:50:50,303 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:50:50,303 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:50:50,304 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:50:50,304 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:50:50,305 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:50:50,305 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:50:50,306 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:50:50,306 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:50:50,307 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 11:50:50,307 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:50:50,307 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:50:50,308 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:50:50,308 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:50:50,309 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:50:50,311 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:50:50,311 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:50:50,311 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:50:50,311 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:50:50,312 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:50:50,312 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:50:50,312 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:50:50,312 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:50:50,313 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:50:50,313 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:50:50,313 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:50:50,314 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:50:50,314 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:50:50,314 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:50:50,315 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_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 31de98bafea1eb3233157f378400eba30060b6561e9e0a6257ecfebe8e53877a [2023-11-26 11:50:50,630 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:50:50,654 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:50:50,657 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:50:50,658 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:50:50,659 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:50:50,660 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/recursive-simple/fibo_2calls_6-2.c [2023-11-26 11:50:53,709 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:50:53,966 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:50:53,967 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/sv-benchmarks/c/recursive-simple/fibo_2calls_6-2.c [2023-11-26 11:50:53,973 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/data/95ec33d90/6c329aec62504223b5349f8339d16f98/FLAGeeee253bb [2023-11-26 11:50:53,985 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/data/95ec33d90/6c329aec62504223b5349f8339d16f98 [2023-11-26 11:50:53,988 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:50:53,989 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:50:53,991 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:50:53,991 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:50:54,001 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:50:54,002 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:50:53" (1/1) ... [2023-11-26 11:50:54,006 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1969cbce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:54, skipping insertion in model container [2023-11-26 11:50:54,006 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:50:53" (1/1) ... [2023-11-26 11:50:54,028 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:50:54,188 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:50:54,198 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:50:54,213 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:50:54,230 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:50:54,231 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:54 WrapperNode [2023-11-26 11:50:54,232 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:50:54,237 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:50:54,237 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:50:54,238 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:50:54,244 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:54" (1/1) ... [2023-11-26 11:50:54,252 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:54" (1/1) ... [2023-11-26 11:50:54,268 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 21 [2023-11-26 11:50:54,268 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:50:54,269 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:50:54,269 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:50:54,269 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:50:54,278 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:54" (1/1) ... [2023-11-26 11:50:54,278 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:54" (1/1) ... [2023-11-26 11:50:54,279 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:54" (1/1) ... [2023-11-26 11:50:54,291 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2023-11-26 11:50:54,292 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:54" (1/1) ... [2023-11-26 11:50:54,292 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:54" (1/1) ... [2023-11-26 11:50:54,295 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:54" (1/1) ... [2023-11-26 11:50:54,297 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:54" (1/1) ... [2023-11-26 11:50:54,298 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:54" (1/1) ... [2023-11-26 11:50:54,299 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:54" (1/1) ... [2023-11-26 11:50:54,301 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:50:54,302 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:50:54,302 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:50:54,302 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:50:54,303 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:54" (1/1) ... [2023-11-26 11:50:54,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:50:54,321 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:50:54,340 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:50:54,383 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:50:54,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:50:54,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:50:54,399 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2023-11-26 11:50:54,399 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2023-11-26 11:50:54,400 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2023-11-26 11:50:54,400 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2023-11-26 11:50:54,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:50:54,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:50:54,496 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:50:54,504 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:50:54,777 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:50:54,801 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:50:54,804 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 11:50:54,805 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:50:54 BoogieIcfgContainer [2023-11-26 11:50:54,805 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:50:54,809 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:50:54,809 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:50:54,814 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:50:54,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:50:53" (1/3) ... [2023-11-26 11:50:54,816 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a7746be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:50:54, skipping insertion in model container [2023-11-26 11:50:54,817 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:50:54" (2/3) ... [2023-11-26 11:50:54,817 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a7746be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:50:54, skipping insertion in model container [2023-11-26 11:50:54,817 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:50:54" (3/3) ... [2023-11-26 11:50:54,818 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_6-2.c [2023-11-26 11:50:54,838 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:50:54,839 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-26 11:50:54,907 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:50:54,915 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;@7ea662e5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:50:54,915 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-11-26 11:50:54,920 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) [2023-11-26 11:50:54,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-26 11:50:54,927 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:54,928 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-26 11:50:54,929 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-26 11:50:54,937 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:54,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1021543012, now seen corresponding path program 1 times [2023-11-26 11:50:54,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:54,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331066741] [2023-11-26 11:50:54,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:54,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:55,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:55,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:55,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:55,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331066741] [2023-11-26 11:50:55,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331066741] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:55,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:55,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:50:55,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606554234] [2023-11-26 11:50:55,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:55,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:50:55,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:55,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:50:55,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:50:55,186 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 3 states, 2 states have (on average 2.5) 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) [2023-11-26 11:50:55,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:55,243 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2023-11-26 11:50:55,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:50:55,246 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 [2023-11-26 11:50:55,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:55,254 INFO L225 Difference]: With dead ends: 52 [2023-11-26 11:50:55,255 INFO L226 Difference]: Without dead ends: 44 [2023-11-26 11:50:55,257 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 [2023-11-26 11:50:55,261 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 14 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:55,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 80 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:50:55,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-11-26 11:50:55,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2023-11-26 11:50:55,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 25 states have (on average 1.56) internal successors, (39), 35 states have internal predecessors, (39), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-11-26 11:50:55,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2023-11-26 11:50:55,310 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 6 [2023-11-26 11:50:55,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:55,311 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2023-11-26 11:50:55,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) 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) [2023-11-26 11:50:55,311 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2023-11-26 11:50:55,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-26 11:50:55,312 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:55,313 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:55,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:50:55,313 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-26 11:50:55,314 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:55,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1603062213, now seen corresponding path program 1 times [2023-11-26 11:50:55,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:55,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320438821] [2023-11-26 11:50:55,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:55,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:55,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:55,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:55,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:55,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320438821] [2023-11-26 11:50:55,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320438821] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:55,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:55,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:50:55,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799511867] [2023-11-26 11:50:55,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:55,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:50:55,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:55,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:50:55,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:50:55,394 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand has 5 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:55,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:55,518 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2023-11-26 11:50:55,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:50:55,518 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-11-26 11:50:55,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:55,520 INFO L225 Difference]: With dead ends: 63 [2023-11-26 11:50:55,520 INFO L226 Difference]: Without dead ends: 59 [2023-11-26 11:50:55,521 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 [2023-11-26 11:50:55,522 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 29 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:55,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 155 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:50:55,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-11-26 11:50:55,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2023-11-26 11:50:55,556 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) [2023-11-26 11:50:55,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2023-11-26 11:50:55,559 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 7 [2023-11-26 11:50:55,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:55,559 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2023-11-26 11:50:55,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:50:55,560 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2023-11-26 11:50:55,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-26 11:50:55,560 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:55,561 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:55,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:50:55,561 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-26 11:50:55,562 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:55,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1070030294, now seen corresponding path program 1 times [2023-11-26 11:50:55,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:55,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747725625] [2023-11-26 11:50:55,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:55,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:55,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:55,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:55,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:55,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747725625] [2023-11-26 11:50:55,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747725625] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:55,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:55,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:50:55,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111695805] [2023-11-26 11:50:55,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:55,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:50:55,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:55,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:50:55,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:50:55,624 INFO L87 Difference]: Start difference. First operand 55 states and 64 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) [2023-11-26 11:50:55,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:55,648 INFO L93 Difference]: Finished difference Result 57 states and 69 transitions. [2023-11-26 11:50:55,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:50:55,649 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 [2023-11-26 11:50:55,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:55,651 INFO L225 Difference]: With dead ends: 57 [2023-11-26 11:50:55,651 INFO L226 Difference]: Without dead ends: 55 [2023-11-26 11:50:55,651 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 [2023-11-26 11:50:55,653 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 [2023-11-26 11:50:55,653 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] [2023-11-26 11:50:55,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-11-26 11:50:55,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2023-11-26 11:50:55,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 36 states have (on average 1.3611111111111112) internal successors, (49), 43 states have internal predecessors, (49), 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) [2023-11-26 11:50:55,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2023-11-26 11:50:55,665 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 12 [2023-11-26 11:50:55,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:55,665 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2023-11-26 11:50:55,666 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) [2023-11-26 11:50:55,666 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2023-11-26 11:50:55,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-26 11:50:55,666 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:55,667 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:55,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:50:55,667 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-26 11:50:55,668 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:55,668 INFO L85 PathProgramCache]: Analyzing trace with hash -1188799193, now seen corresponding path program 1 times [2023-11-26 11:50:55,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:55,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595410513] [2023-11-26 11:50:55,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:55,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:55,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:55,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:55,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:55,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595410513] [2023-11-26 11:50:55,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595410513] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:55,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:55,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:50:55,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670844064] [2023-11-26 11:50:55,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:55,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:50:55,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:55,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:50:55,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:50:55,876 INFO L87 Difference]: Start difference. First operand 53 states and 62 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) [2023-11-26 11:50:56,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:56,032 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2023-11-26 11:50:56,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:50:56,033 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 [2023-11-26 11:50:56,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:56,035 INFO L225 Difference]: With dead ends: 53 [2023-11-26 11:50:56,035 INFO L226 Difference]: Without dead ends: 49 [2023-11-26 11:50:56,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:50:56,037 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 55 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:56,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 81 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:50:56,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-11-26 11:50:56,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2023-11-26 11:50:56,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 36 states have (on average 1.25) internal successors, (45), 39 states have internal predecessors, (45), 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) [2023-11-26 11:50:56,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2023-11-26 11:50:56,049 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 13 [2023-11-26 11:50:56,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:56,049 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2023-11-26 11:50:56,049 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) [2023-11-26 11:50:56,050 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2023-11-26 11:50:56,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-26 11:50:56,051 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:56,051 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:56,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 11:50:56,052 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-26 11:50:56,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:56,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1317113808, now seen corresponding path program 1 times [2023-11-26 11:50:56,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:56,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745289060] [2023-11-26 11:50:56,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:56,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:56,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:56,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-26 11:50:56,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:56,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 11:50:56,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:56,342 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:50:56,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:56,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745289060] [2023-11-26 11:50:56,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745289060] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:56,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:56,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:50:56,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62329714] [2023-11-26 11:50:56,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:56,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:50:56,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:56,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:50:56,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:50:56,346 INFO L87 Difference]: Start difference. First operand 49 states and 58 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) [2023-11-26 11:50:56,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:56,385 INFO L93 Difference]: Finished difference Result 75 states and 93 transitions. [2023-11-26 11:50:56,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:50:56,386 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 [2023-11-26 11:50:56,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:56,388 INFO L225 Difference]: With dead ends: 75 [2023-11-26 11:50:56,388 INFO L226 Difference]: Without dead ends: 70 [2023-11-26 11:50:56,389 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 [2023-11-26 11:50:56,390 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 6 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:56,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 109 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:50:56,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-11-26 11:50:56,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 62. [2023-11-26 11:50:56,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 49 states have internal predecessors, (55), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (13), 9 states have call predecessors, (13), 8 states have call successors, (13) [2023-11-26 11:50:56,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 77 transitions. [2023-11-26 11:50:56,405 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 77 transitions. Word has length 22 [2023-11-26 11:50:56,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:56,405 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 77 transitions. [2023-11-26 11:50:56,406 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) [2023-11-26 11:50:56,406 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 77 transitions. [2023-11-26 11:50:56,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-26 11:50:56,407 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:56,407 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] [2023-11-26 11:50:56,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 11:50:56,408 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-26 11:50:56,408 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:56,409 INFO L85 PathProgramCache]: Analyzing trace with hash -2108197165, now seen corresponding path program 1 times [2023-11-26 11:50:56,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:56,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541951809] [2023-11-26 11:50:56,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:56,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:56,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:56,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-26 11:50:56,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:56,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 11:50:56,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:56,601 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:50:56,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:56,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541951809] [2023-11-26 11:50:56,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541951809] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:50:56,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811869370] [2023-11-26 11:50:56,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:56,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:56,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:50:56,610 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:50:56,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:50:56,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:56,672 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:50:56,677 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:56,817 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:56,817 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:50:56,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811869370] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:56,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:50:56,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2023-11-26 11:50:56,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180249584] [2023-11-26 11:50:56,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:56,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:50:56,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:56,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:50:56,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:50:56,828 INFO L87 Difference]: Start difference. First operand 62 states and 77 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) [2023-11-26 11:50:57,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:57,007 INFO L93 Difference]: Finished difference Result 110 states and 133 transitions. [2023-11-26 11:50:57,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:50:57,012 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 [2023-11-26 11:50:57,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:57,013 INFO L225 Difference]: With dead ends: 110 [2023-11-26 11:50:57,013 INFO L226 Difference]: Without dead ends: 60 [2023-11-26 11:50:57,029 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 [2023-11-26 11:50:57,031 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 35 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:57,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 128 Invalid, 116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:50:57,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-11-26 11:50:57,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2023-11-26 11:50:57,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 43 states have (on average 1.2093023255813953) internal successors, (52), 46 states have internal predecessors, (52), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2023-11-26 11:50:57,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 70 transitions. [2023-11-26 11:50:57,060 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 70 transitions. Word has length 23 [2023-11-26 11:50:57,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:57,060 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 70 transitions. [2023-11-26 11:50:57,061 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) [2023-11-26 11:50:57,061 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 70 transitions. [2023-11-26 11:50:57,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-26 11:50:57,064 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:57,064 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] [2023-11-26 11:50:57,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:50:57,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-26 11:50:57,271 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-26 11:50:57,272 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:57,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1308693282, now seen corresponding path program 1 times [2023-11-26 11:50:57,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:57,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687881699] [2023-11-26 11:50:57,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:57,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:57,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:57,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-26 11:50:57,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:57,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-26 11:50:57,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:57,454 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 11:50:57,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:57,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687881699] [2023-11-26 11:50:57,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687881699] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:57,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:57,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:50:57,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427739021] [2023-11-26 11:50:57,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:57,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:50:57,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:57,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:50:57,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:50:57,457 INFO L87 Difference]: Start difference. First operand 58 states and 70 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 11:50:57,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:57,512 INFO L93 Difference]: Finished difference Result 84 states and 107 transitions. [2023-11-26 11:50:57,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:50:57,513 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2023-11-26 11:50:57,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:57,517 INFO L225 Difference]: With dead ends: 84 [2023-11-26 11:50:57,518 INFO L226 Difference]: Without dead ends: 79 [2023-11-26 11:50:57,518 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 [2023-11-26 11:50:57,521 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 5 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:57,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 140 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:50:57,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-11-26 11:50:57,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 68. [2023-11-26 11:50:57,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 50 states have (on average 1.18) internal successors, (59), 54 states have internal predecessors, (59), 10 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (19), 10 states have call predecessors, (19), 9 states have call successors, (19) [2023-11-26 11:50:57,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 88 transitions. [2023-11-26 11:50:57,555 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 88 transitions. Word has length 24 [2023-11-26 11:50:57,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:57,555 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 88 transitions. [2023-11-26 11:50:57,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 11:50:57,556 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 88 transitions. [2023-11-26 11:50:57,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-26 11:50:57,562 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:57,563 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:57,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 11:50:57,564 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-26 11:50:57,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:57,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1559204346, now seen corresponding path program 1 times [2023-11-26 11:50:57,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:57,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493037364] [2023-11-26 11:50:57,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:57,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:57,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:57,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:50:57,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:57,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 11:50:57,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:57,706 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-26 11:50:57,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:57,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493037364] [2023-11-26 11:50:57,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493037364] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:57,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:50:57,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:50:57,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999727288] [2023-11-26 11:50:57,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:57,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:50:57,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:57,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:50:57,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:50:57,710 INFO L87 Difference]: Start difference. First operand 68 states and 88 transitions. Second operand has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 11:50:57,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:57,752 INFO L93 Difference]: Finished difference Result 84 states and 107 transitions. [2023-11-26 11:50:57,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:50:57,753 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2023-11-26 11:50:57,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:57,755 INFO L225 Difference]: With dead ends: 84 [2023-11-26 11:50:57,755 INFO L226 Difference]: Without dead ends: 82 [2023-11-26 11:50:57,758 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 [2023-11-26 11:50:57,760 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 6 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:57,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 117 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:50:57,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-11-26 11:50:57,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 77. [2023-11-26 11:50:57,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 57 states have (on average 1.1578947368421053) internal successors, (66), 61 states have internal predecessors, (66), 11 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (23), 12 states have call predecessors, (23), 10 states have call successors, (23) [2023-11-26 11:50:57,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 100 transitions. [2023-11-26 11:50:57,787 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 100 transitions. Word has length 28 [2023-11-26 11:50:57,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:57,788 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 100 transitions. [2023-11-26 11:50:57,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 11:50:57,788 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 100 transitions. [2023-11-26 11:50:57,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-26 11:50:57,790 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:57,790 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:57,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 11:50:57,791 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-26 11:50:57,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:57,791 INFO L85 PathProgramCache]: Analyzing trace with hash -659915937, now seen corresponding path program 1 times [2023-11-26 11:50:57,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:57,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23837097] [2023-11-26 11:50:57,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:57,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:57,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:57,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-26 11:50:57,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:57,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-26 11:50:57,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:57,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-26 11:50:57,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:57,935 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-26 11:50:57,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:57,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23837097] [2023-11-26 11:50:57,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23837097] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:50:57,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657171357] [2023-11-26 11:50:57,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:57,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:57,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:50:57,937 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:50:57,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:50:57,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:57,998 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:50:58,001 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:58,069 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:50:58,069 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:50:58,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657171357] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:58,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:50:58,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2023-11-26 11:50:58,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285806370] [2023-11-26 11:50:58,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:58,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:50:58,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:58,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:50:58,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:50:58,071 INFO L87 Difference]: Start difference. First operand 77 states and 100 transitions. Second operand has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-26 11:50:58,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:58,187 INFO L93 Difference]: Finished difference Result 140 states and 179 transitions. [2023-11-26 11:50:58,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:50:58,188 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2023-11-26 11:50:58,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:58,189 INFO L225 Difference]: With dead ends: 140 [2023-11-26 11:50:58,189 INFO L226 Difference]: Without dead ends: 75 [2023-11-26 11:50:58,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2023-11-26 11:50:58,191 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 34 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:58,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 160 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:50:58,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-11-26 11:50:58,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2023-11-26 11:50:58,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 54 states have (on average 1.1666666666666667) internal successors, (63), 58 states have internal predecessors, (63), 10 states have call successors, (10), 3 states have call predecessors, (10), 5 states have return successors, (20), 11 states have call predecessors, (20), 9 states have call successors, (20) [2023-11-26 11:50:58,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 93 transitions. [2023-11-26 11:50:58,201 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 93 transitions. Word has length 38 [2023-11-26 11:50:58,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:58,202 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 93 transitions. [2023-11-26 11:50:58,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-26 11:50:58,202 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 93 transitions. [2023-11-26 11:50:58,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-26 11:50:58,203 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:58,203 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:58,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:50:58,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-26 11:50:58,410 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-26 11:50:58,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:58,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1102557063, now seen corresponding path program 1 times [2023-11-26 11:50:58,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:58,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63238344] [2023-11-26 11:50:58,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:58,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:58,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:58,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:50:58,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:58,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 11:50:58,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:58,520 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-26 11:50:58,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:58,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63238344] [2023-11-26 11:50:58,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63238344] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:50:58,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766978951] [2023-11-26 11:50:58,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:58,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:58,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:50:58,524 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:50:58,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:50:58,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:58,581 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:50:58,585 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:58,714 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:50:58,714 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:50:58,907 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:50:58,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766978951] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:50:58,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:50:58,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2023-11-26 11:50:58,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080110337] [2023-11-26 11:50:58,908 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:50:58,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-26 11:50:58,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:58,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-26 11:50:58,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2023-11-26 11:50:58,912 INFO L87 Difference]: Start difference. First operand 73 states and 93 transitions. Second operand has 19 states, 17 states have (on average 3.411764705882353) internal successors, (58), 15 states have internal predecessors, (58), 9 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-26 11:50:59,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:59,402 INFO L93 Difference]: Finished difference Result 201 states and 266 transitions. [2023-11-26 11:50:59,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-26 11:50:59,402 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.411764705882353) internal successors, (58), 15 states have internal predecessors, (58), 9 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 29 [2023-11-26 11:50:59,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:59,405 INFO L225 Difference]: With dead ends: 201 [2023-11-26 11:50:59,405 INFO L226 Difference]: Without dead ends: 136 [2023-11-26 11:50:59,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=518, Unknown=0, NotChecked=0, Total=600 [2023-11-26 11:50:59,407 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 128 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:59,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 544 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:50:59,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2023-11-26 11:50:59,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 120. [2023-11-26 11:50:59,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 91 states have (on average 1.164835164835165) internal successors, (106), 96 states have internal predecessors, (106), 16 states have call successors, (16), 6 states have call predecessors, (16), 9 states have return successors, (34), 17 states have call predecessors, (34), 15 states have call successors, (34) [2023-11-26 11:50:59,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 156 transitions. [2023-11-26 11:50:59,439 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 156 transitions. Word has length 29 [2023-11-26 11:50:59,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:59,444 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 156 transitions. [2023-11-26 11:50:59,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.411764705882353) internal successors, (58), 15 states have internal predecessors, (58), 9 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2023-11-26 11:50:59,444 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 156 transitions. [2023-11-26 11:50:59,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-11-26 11:50:59,447 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:59,447 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:59,454 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:50:59,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:59,654 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-26 11:50:59,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:50:59,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1810923195, now seen corresponding path program 2 times [2023-11-26 11:50:59,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:50:59,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911742451] [2023-11-26 11:50:59,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:50:59,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:50:59,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:59,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 11:50:59,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:59,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-26 11:50:59,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:50:59,744 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 11:50:59,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:50:59,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911742451] [2023-11-26 11:50:59,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911742451] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:50:59,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000973965] [2023-11-26 11:50:59,745 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:50:59,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:50:59,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:50:59,751 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:50:59,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:50:59,803 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 11:50:59,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:50:59,804 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:50:59,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:50:59,854 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 11:50:59,854 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:50:59,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000973965] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:50:59,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:50:59,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2023-11-26 11:50:59,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405780848] [2023-11-26 11:50:59,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:50:59,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:50:59,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:50:59,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:50:59,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:50:59,856 INFO L87 Difference]: Start difference. First operand 120 states and 156 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 11:50:59,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:50:59,892 INFO L93 Difference]: Finished difference Result 130 states and 168 transitions. [2023-11-26 11:50:59,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:50:59,893 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2023-11-26 11:50:59,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:50:59,895 INFO L225 Difference]: With dead ends: 130 [2023-11-26 11:50:59,895 INFO L226 Difference]: Without dead ends: 129 [2023-11-26 11:50:59,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:50:59,896 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 6 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:50:59,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 132 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:50:59,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-11-26 11:50:59,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 124. [2023-11-26 11:50:59,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 95 states have (on average 1.1578947368421053) internal successors, (110), 98 states have internal predecessors, (110), 16 states have call successors, (16), 6 states have call predecessors, (16), 9 states have return successors, (34), 19 states have call predecessors, (34), 15 states have call successors, (34) [2023-11-26 11:50:59,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 160 transitions. [2023-11-26 11:50:59,909 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 160 transitions. Word has length 41 [2023-11-26 11:50:59,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:50:59,909 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 160 transitions. [2023-11-26 11:50:59,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 11:50:59,910 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 160 transitions. [2023-11-26 11:50:59,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-26 11:50:59,911 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:50:59,911 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:50:59,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 11:51:00,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:00,117 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-26 11:51:00,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:00,117 INFO L85 PathProgramCache]: Analyzing trace with hash 304044270, now seen corresponding path program 1 times [2023-11-26 11:51:00,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:00,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594152994] [2023-11-26 11:51:00,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:00,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:00,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:00,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 11:51:00,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:00,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-26 11:51:00,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:00,221 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-11-26 11:51:00,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:00,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594152994] [2023-11-26 11:51:00,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594152994] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:51:00,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1047190744] [2023-11-26 11:51:00,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:00,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:00,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:00,223 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:51:00,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 11:51:00,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:00,280 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-26 11:51:00,283 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:51:00,481 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:51:00,482 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:51:00,707 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:51:00,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1047190744] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:51:00,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:51:00,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 13, 13] total 18 [2023-11-26 11:51:00,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258509505] [2023-11-26 11:51:00,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:51:00,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-11-26 11:51:00,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:00,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-11-26 11:51:00,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2023-11-26 11:51:00,713 INFO L87 Difference]: Start difference. First operand 124 states and 160 transitions. Second operand has 18 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 14 states have internal predecessors, (60), 8 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-26 11:51:01,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:01,250 INFO L93 Difference]: Finished difference Result 300 states and 387 transitions. [2023-11-26 11:51:01,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-26 11:51:01,251 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 14 states have internal predecessors, (60), 8 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 42 [2023-11-26 11:51:01,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:01,253 INFO L225 Difference]: With dead ends: 300 [2023-11-26 11:51:01,253 INFO L226 Difference]: Without dead ends: 190 [2023-11-26 11:51:01,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 70 SyntacticMatches, 10 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2023-11-26 11:51:01,255 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 114 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 666 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:51:01,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 705 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 666 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 11:51:01,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2023-11-26 11:51:01,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 167. [2023-11-26 11:51:01,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 130 states have (on average 1.146153846153846) internal successors, (149), 131 states have internal predecessors, (149), 22 states have call successors, (22), 8 states have call predecessors, (22), 11 states have return successors, (48), 27 states have call predecessors, (48), 21 states have call successors, (48) [2023-11-26 11:51:01,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 219 transitions. [2023-11-26 11:51:01,273 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 219 transitions. Word has length 42 [2023-11-26 11:51:01,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:01,273 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 219 transitions. [2023-11-26 11:51:01,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.5294117647058822) internal successors, (60), 14 states have internal predecessors, (60), 8 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-26 11:51:01,273 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 219 transitions. [2023-11-26 11:51:01,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-26 11:51:01,274 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:01,275 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:01,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 11:51:01,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:01,481 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-26 11:51:01,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:01,481 INFO L85 PathProgramCache]: Analyzing trace with hash -145283649, now seen corresponding path program 1 times [2023-11-26 11:51:01,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:01,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000866494] [2023-11-26 11:51:01,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:01,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:01,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:01,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-26 11:51:01,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:01,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-26 11:51:01,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:01,568 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-26 11:51:01,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:01,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000866494] [2023-11-26 11:51:01,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000866494] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:51:01,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323854556] [2023-11-26 11:51:01,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:01,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:01,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:01,570 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:51:01,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 11:51:01,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:01,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-26 11:51:01,630 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:51:01,858 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 10 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:51:01,859 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:51:02,099 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:51:02,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323854556] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:51:02,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:51:02,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 15, 15] total 20 [2023-11-26 11:51:02,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617807943] [2023-11-26 11:51:02,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:51:02,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-26 11:51:02,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:02,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-26 11:51:02,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2023-11-26 11:51:02,101 INFO L87 Difference]: Start difference. First operand 167 states and 219 transitions. Second operand has 20 states, 19 states have (on average 3.263157894736842) internal successors, (62), 15 states have internal predecessors, (62), 9 states have call successors, (12), 7 states have call predecessors, (12), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-26 11:51:02,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:02,633 INFO L93 Difference]: Finished difference Result 357 states and 467 transitions. [2023-11-26 11:51:02,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-26 11:51:02,634 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.263157894736842) internal successors, (62), 15 states have internal predecessors, (62), 9 states have call successors, (12), 7 states have call predecessors, (12), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 47 [2023-11-26 11:51:02,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:02,636 INFO L225 Difference]: With dead ends: 357 [2023-11-26 11:51:02,636 INFO L226 Difference]: Without dead ends: 210 [2023-11-26 11:51:02,638 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 77 SyntacticMatches, 12 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=97, Invalid=605, Unknown=0, NotChecked=0, Total=702 [2023-11-26 11:51:02,641 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 156 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 634 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:51:02,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 650 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 634 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 11:51:02,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2023-11-26 11:51:02,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 189. [2023-11-26 11:51:02,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 148 states have (on average 1.1418918918918919) internal successors, (169), 148 states have internal predecessors, (169), 25 states have call successors, (25), 9 states have call predecessors, (25), 12 states have return successors, (55), 31 states have call predecessors, (55), 24 states have call successors, (55) [2023-11-26 11:51:02,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 249 transitions. [2023-11-26 11:51:02,667 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 249 transitions. Word has length 47 [2023-11-26 11:51:02,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:02,667 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 249 transitions. [2023-11-26 11:51:02,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.263157894736842) internal successors, (62), 15 states have internal predecessors, (62), 9 states have call successors, (12), 7 states have call predecessors, (12), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2023-11-26 11:51:02,667 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 249 transitions. [2023-11-26 11:51:02,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-26 11:51:02,669 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:02,669 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:02,680 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 11:51:02,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:02,875 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-26 11:51:02,875 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:02,875 INFO L85 PathProgramCache]: Analyzing trace with hash -350528371, now seen corresponding path program 2 times [2023-11-26 11:51:02,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:02,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179253301] [2023-11-26 11:51:02,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:02,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:02,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:02,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-26 11:51:02,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:02,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-26 11:51:02,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:02,990 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-26 11:51:02,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:02,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179253301] [2023-11-26 11:51:02,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179253301] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:51:02,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436267695] [2023-11-26 11:51:02,991 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:51:02,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:02,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:02,992 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:51:03,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 11:51:03,043 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 11:51:03,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:51:03,044 INFO L262 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:51:03,045 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:51:03,092 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-26 11:51:03,092 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:51:03,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1436267695] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:03,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:51:03,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2023-11-26 11:51:03,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726866837] [2023-11-26 11:51:03,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:03,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:51:03,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:03,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:51:03,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:51:03,095 INFO L87 Difference]: Start difference. First operand 189 states and 249 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 11:51:03,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:03,133 INFO L93 Difference]: Finished difference Result 203 states and 269 transitions. [2023-11-26 11:51:03,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:51:03,134 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 47 [2023-11-26 11:51:03,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:03,136 INFO L225 Difference]: With dead ends: 203 [2023-11-26 11:51:03,136 INFO L226 Difference]: Without dead ends: 202 [2023-11-26 11:51:03,136 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:51:03,137 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 6 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:51:03,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 132 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:51:03,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2023-11-26 11:51:03,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 197. [2023-11-26 11:51:03,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 156 states have (on average 1.1346153846153846) internal successors, (177), 152 states have internal predecessors, (177), 25 states have call successors, (25), 9 states have call predecessors, (25), 12 states have return successors, (55), 35 states have call predecessors, (55), 24 states have call successors, (55) [2023-11-26 11:51:03,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 257 transitions. [2023-11-26 11:51:03,158 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 257 transitions. Word has length 47 [2023-11-26 11:51:03,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:03,158 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 257 transitions. [2023-11-26 11:51:03,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 11:51:03,159 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 257 transitions. [2023-11-26 11:51:03,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-26 11:51:03,160 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:03,160 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:03,167 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 11:51:03,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-26 11:51:03,373 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-26 11:51:03,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:03,373 INFO L85 PathProgramCache]: Analyzing trace with hash 2018522486, now seen corresponding path program 1 times [2023-11-26 11:51:03,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:03,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862086979] [2023-11-26 11:51:03,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:03,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:03,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:03,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-26 11:51:03,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:03,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-26 11:51:03,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:03,471 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-26 11:51:03,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:03,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862086979] [2023-11-26 11:51:03,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862086979] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:51:03,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196830968] [2023-11-26 11:51:03,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:03,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:03,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:03,473 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:51:03,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 11:51:03,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:03,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:51:03,526 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:51:03,575 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-26 11:51:03,576 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:51:03,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [196830968] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:03,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:51:03,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2023-11-26 11:51:03,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114954900] [2023-11-26 11:51:03,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:03,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:51:03,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:03,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:51:03,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:51:03,578 INFO L87 Difference]: Start difference. First operand 197 states and 257 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 11:51:03,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:03,616 INFO L93 Difference]: Finished difference Result 215 states and 278 transitions. [2023-11-26 11:51:03,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:51:03,618 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 48 [2023-11-26 11:51:03,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:03,621 INFO L225 Difference]: With dead ends: 215 [2023-11-26 11:51:03,621 INFO L226 Difference]: Without dead ends: 214 [2023-11-26 11:51:03,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:51:03,622 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 4 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:51:03,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 110 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:51:03,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2023-11-26 11:51:03,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 193. [2023-11-26 11:51:03,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 153 states have (on average 1.1372549019607843) internal successors, (174), 149 states have internal predecessors, (174), 24 states have call successors, (24), 9 states have call predecessors, (24), 12 states have return successors, (52), 34 states have call predecessors, (52), 23 states have call successors, (52) [2023-11-26 11:51:03,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 250 transitions. [2023-11-26 11:51:03,639 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 250 transitions. Word has length 48 [2023-11-26 11:51:03,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:03,639 INFO L495 AbstractCegarLoop]: Abstraction has 193 states and 250 transitions. [2023-11-26 11:51:03,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-26 11:51:03,640 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 250 transitions. [2023-11-26 11:51:03,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2023-11-26 11:51:03,641 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:03,641 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:03,657 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-26 11:51:03,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-26 11:51:03,847 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-26 11:51:03,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:03,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1049617255, now seen corresponding path program 1 times [2023-11-26 11:51:03,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:03,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600262943] [2023-11-26 11:51:03,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:03,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:03,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:03,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-26 11:51:03,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:03,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-26 11:51:03,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:03,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-26 11:51:03,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:03,965 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-11-26 11:51:03,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:03,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600262943] [2023-11-26 11:51:03,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600262943] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:03,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:03,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:51:03,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433687379] [2023-11-26 11:51:03,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:03,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:51:03,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:03,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:51:03,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:51:03,967 INFO L87 Difference]: Start difference. First operand 193 states and 250 transitions. Second operand has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-26 11:51:04,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:04,013 INFO L93 Difference]: Finished difference Result 211 states and 271 transitions. [2023-11-26 11:51:04,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:51:04,013 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 64 [2023-11-26 11:51:04,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:04,016 INFO L225 Difference]: With dead ends: 211 [2023-11-26 11:51:04,016 INFO L226 Difference]: Without dead ends: 210 [2023-11-26 11:51:04,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:51:04,017 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 4 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:51:04,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 174 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:51:04,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2023-11-26 11:51:04,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 189. [2023-11-26 11:51:04,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 150 states have (on average 1.14) internal successors, (171), 146 states have internal predecessors, (171), 23 states have call successors, (23), 9 states have call predecessors, (23), 12 states have return successors, (49), 33 states have call predecessors, (49), 22 states have call successors, (49) [2023-11-26 11:51:04,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 243 transitions. [2023-11-26 11:51:04,034 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 243 transitions. Word has length 64 [2023-11-26 11:51:04,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:04,034 INFO L495 AbstractCegarLoop]: Abstraction has 189 states and 243 transitions. [2023-11-26 11:51:04,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.0) internal successors, (24), 5 states have internal predecessors, (24), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-26 11:51:04,034 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 243 transitions. [2023-11-26 11:51:04,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-26 11:51:04,035 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:04,036 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:04,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-26 11:51:04,036 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-26 11:51:04,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:04,037 INFO L85 PathProgramCache]: Analyzing trace with hash 525191420, now seen corresponding path program 1 times [2023-11-26 11:51:04,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:04,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031327388] [2023-11-26 11:51:04,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:04,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:04,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:04,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-26 11:51:04,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:04,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2023-11-26 11:51:04,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:04,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:04,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:04,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:51:04,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:04,118 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-26 11:51:04,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:04,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031327388] [2023-11-26 11:51:04,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031327388] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:51:04,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323594218] [2023-11-26 11:51:04,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:04,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:04,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:04,121 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:51:04,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-26 11:51:04,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:04,185 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-26 11:51:04,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:51:04,377 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 28 proven. 33 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 11:51:04,378 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:51:04,610 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 28 proven. 33 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 11:51:04,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1323594218] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:51:04,610 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:51:04,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 15, 15] total 19 [2023-11-26 11:51:04,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533944455] [2023-11-26 11:51:04,611 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:51:04,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-26 11:51:04,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:04,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-26 11:51:04,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2023-11-26 11:51:04,613 INFO L87 Difference]: Start difference. First operand 189 states and 243 transitions. Second operand has 19 states, 18 states have (on average 4.111111111111111) internal successors, (74), 14 states have internal predecessors, (74), 9 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 11:51:05,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:05,154 INFO L93 Difference]: Finished difference Result 451 states and 614 transitions. [2023-11-26 11:51:05,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-26 11:51:05,155 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 4.111111111111111) internal successors, (74), 14 states have internal predecessors, (74), 9 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 67 [2023-11-26 11:51:05,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:05,157 INFO L225 Difference]: With dead ends: 451 [2023-11-26 11:51:05,157 INFO L226 Difference]: Without dead ends: 282 [2023-11-26 11:51:05,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 121 SyntacticMatches, 12 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=177, Invalid=815, Unknown=0, NotChecked=0, Total=992 [2023-11-26 11:51:05,160 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 199 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:51:05,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 236 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 532 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:51:05,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2023-11-26 11:51:05,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 256. [2023-11-26 11:51:05,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 204 states have (on average 1.1323529411764706) internal successors, (231), 198 states have internal predecessors, (231), 32 states have call successors, (32), 12 states have call predecessors, (32), 16 states have return successors, (64), 45 states have call predecessors, (64), 31 states have call successors, (64) [2023-11-26 11:51:05,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 327 transitions. [2023-11-26 11:51:05,183 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 327 transitions. Word has length 67 [2023-11-26 11:51:05,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:05,184 INFO L495 AbstractCegarLoop]: Abstraction has 256 states and 327 transitions. [2023-11-26 11:51:05,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 4.111111111111111) internal successors, (74), 14 states have internal predecessors, (74), 9 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 11:51:05,184 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 327 transitions. [2023-11-26 11:51:05,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-26 11:51:05,185 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:05,186 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:05,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-26 11:51:05,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-26 11:51:05,392 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-26 11:51:05,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:05,392 INFO L85 PathProgramCache]: Analyzing trace with hash -93027204, now seen corresponding path program 1 times [2023-11-26 11:51:05,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:05,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422856563] [2023-11-26 11:51:05,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:05,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:05,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:05,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 11:51:05,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:05,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:05,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:05,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:51:05,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:05,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-26 11:51:05,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:05,470 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2023-11-26 11:51:05,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:05,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422856563] [2023-11-26 11:51:05,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422856563] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:05,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:05,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:51:05,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900158593] [2023-11-26 11:51:05,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:05,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:51:05,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:05,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:51:05,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:51:05,473 INFO L87 Difference]: Start difference. First operand 256 states and 327 transitions. Second operand has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 11:51:05,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:05,511 INFO L93 Difference]: Finished difference Result 278 states and 352 transitions. [2023-11-26 11:51:05,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:51:05,512 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 61 [2023-11-26 11:51:05,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:05,515 INFO L225 Difference]: With dead ends: 278 [2023-11-26 11:51:05,515 INFO L226 Difference]: Without dead ends: 277 [2023-11-26 11:51:05,516 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:51:05,516 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 4 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 101 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 [2023-11-26 11:51:05,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 101 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:51:05,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2023-11-26 11:51:05,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 264. [2023-11-26 11:51:05,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 211 states have (on average 1.127962085308057) internal successors, (238), 204 states have internal predecessors, (238), 32 states have call successors, (32), 12 states have call predecessors, (32), 17 states have return successors, (65), 47 states have call predecessors, (65), 31 states have call successors, (65) [2023-11-26 11:51:05,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 335 transitions. [2023-11-26 11:51:05,537 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 335 transitions. Word has length 61 [2023-11-26 11:51:05,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:05,538 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 335 transitions. [2023-11-26 11:51:05,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 11:51:05,538 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 335 transitions. [2023-11-26 11:51:05,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-11-26 11:51:05,539 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:05,540 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:05,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-26 11:51:05,540 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-26 11:51:05,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:05,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1778862165, now seen corresponding path program 1 times [2023-11-26 11:51:05,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:05,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374886217] [2023-11-26 11:51:05,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:05,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:05,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:05,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 11:51:05,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:05,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:05,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:05,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:51:05,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:05,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-26 11:51:05,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:05,721 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-11-26 11:51:05,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:05,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374886217] [2023-11-26 11:51:05,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374886217] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:05,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:05,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-26 11:51:05,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788233523] [2023-11-26 11:51:05,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:05,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 11:51:05,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:05,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 11:51:05,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:51:05,726 INFO L87 Difference]: Start difference. First operand 264 states and 335 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-26 11:51:05,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:05,844 INFO L93 Difference]: Finished difference Result 349 states and 452 transitions. [2023-11-26 11:51:05,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 11:51:05,845 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 62 [2023-11-26 11:51:05,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:05,848 INFO L225 Difference]: With dead ends: 349 [2023-11-26 11:51:05,848 INFO L226 Difference]: Without dead ends: 348 [2023-11-26 11:51:05,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:51:05,850 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 10 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:51:05,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 275 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:51:05,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2023-11-26 11:51:05,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 281. [2023-11-26 11:51:05,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 223 states have (on average 1.1210762331838564) internal successors, (250), 218 states have internal predecessors, (250), 34 states have call successors, (34), 12 states have call predecessors, (34), 20 states have return successors, (81), 50 states have call predecessors, (81), 33 states have call successors, (81) [2023-11-26 11:51:05,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 365 transitions. [2023-11-26 11:51:05,874 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 365 transitions. Word has length 62 [2023-11-26 11:51:05,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:05,875 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 365 transitions. [2023-11-26 11:51:05,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-26 11:51:05,875 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 365 transitions. [2023-11-26 11:51:05,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-26 11:51:05,879 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:05,879 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:05,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-26 11:51:05,879 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-26 11:51:05,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:05,880 INFO L85 PathProgramCache]: Analyzing trace with hash 940560868, now seen corresponding path program 1 times [2023-11-26 11:51:05,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:05,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881835246] [2023-11-26 11:51:05,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:05,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:05,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:05,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-26 11:51:05,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:05,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-26 11:51:05,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:05,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:05,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:05,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:51:05,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:05,976 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-11-26 11:51:05,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:05,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881835246] [2023-11-26 11:51:05,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881835246] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:51:05,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614330205] [2023-11-26 11:51:05,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:05,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:05,977 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:05,978 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:51:06,011 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-26 11:51:06,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:06,050 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-26 11:51:06,053 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:51:06,259 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-26 11:51:06,259 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:51:06,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614330205] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:06,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:51:06,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [4] total 20 [2023-11-26 11:51:06,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508347161] [2023-11-26 11:51:06,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:06,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-26 11:51:06,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:06,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-26 11:51:06,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2023-11-26 11:51:06,263 INFO L87 Difference]: Start difference. First operand 281 states and 365 transitions. Second operand has 17 states, 16 states have (on average 3.625) internal successors, (58), 9 states have internal predecessors, (58), 8 states have call successors, (11), 8 states have call predecessors, (11), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-26 11:51:06,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:06,639 INFO L93 Difference]: Finished difference Result 545 states and 733 transitions. [2023-11-26 11:51:06,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-11-26 11:51:06,640 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.625) internal successors, (58), 9 states have internal predecessors, (58), 8 states have call successors, (11), 8 states have call predecessors, (11), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 83 [2023-11-26 11:51:06,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:06,643 INFO L225 Difference]: With dead ends: 545 [2023-11-26 11:51:06,643 INFO L226 Difference]: Without dead ends: 309 [2023-11-26 11:51:06,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=159, Invalid=771, Unknown=0, NotChecked=0, Total=930 [2023-11-26 11:51:06,647 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 210 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:51:06,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 235 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:51:06,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2023-11-26 11:51:06,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 304. [2023-11-26 11:51:06,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 240 states have (on average 1.1208333333333333) internal successors, (269), 237 states have internal predecessors, (269), 36 states have call successors, (36), 14 states have call predecessors, (36), 24 states have return successors, (83), 52 states have call predecessors, (83), 35 states have call successors, (83) [2023-11-26 11:51:06,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 388 transitions. [2023-11-26 11:51:06,671 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 388 transitions. Word has length 83 [2023-11-26 11:51:06,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:06,671 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 388 transitions. [2023-11-26 11:51:06,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.625) internal successors, (58), 9 states have internal predecessors, (58), 8 states have call successors, (11), 8 states have call predecessors, (11), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-26 11:51:06,672 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 388 transitions. [2023-11-26 11:51:06,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-26 11:51:06,673 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:06,673 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:06,684 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-26 11:51:06,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:06,879 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-26 11:51:06,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:06,880 INFO L85 PathProgramCache]: Analyzing trace with hash 2066237387, now seen corresponding path program 1 times [2023-11-26 11:51:06,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:06,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477414372] [2023-11-26 11:51:06,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:06,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:06,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:06,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-26 11:51:06,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:06,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:06,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:06,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:51:06,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:06,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-26 11:51:06,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:06,956 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-11-26 11:51:06,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:06,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477414372] [2023-11-26 11:51:06,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477414372] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:06,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:06,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:51:06,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474603131] [2023-11-26 11:51:06,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:06,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:51:06,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:06,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:51:06,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:51:06,958 INFO L87 Difference]: Start difference. First operand 304 states and 388 transitions. Second operand has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 11:51:07,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:07,001 INFO L93 Difference]: Finished difference Result 318 states and 404 transitions. [2023-11-26 11:51:07,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:51:07,002 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 66 [2023-11-26 11:51:07,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:07,004 INFO L225 Difference]: With dead ends: 318 [2023-11-26 11:51:07,005 INFO L226 Difference]: Without dead ends: 317 [2023-11-26 11:51:07,005 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:51:07,006 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 4 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 137 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:51:07,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 137 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:51:07,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2023-11-26 11:51:07,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 307. [2023-11-26 11:51:07,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 243 states have (on average 1.1111111111111112) internal successors, (270), 239 states have internal predecessors, (270), 36 states have call successors, (36), 14 states have call predecessors, (36), 24 states have return successors, (83), 53 states have call predecessors, (83), 35 states have call successors, (83) [2023-11-26 11:51:07,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 389 transitions. [2023-11-26 11:51:07,029 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 389 transitions. Word has length 66 [2023-11-26 11:51:07,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:07,030 INFO L495 AbstractCegarLoop]: Abstraction has 307 states and 389 transitions. [2023-11-26 11:51:07,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.0) internal successors, (28), 5 states have internal predecessors, (28), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 11:51:07,030 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 389 transitions. [2023-11-26 11:51:07,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2023-11-26 11:51:07,031 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:07,032 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:07,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-26 11:51:07,032 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-26 11:51:07,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:07,033 INFO L85 PathProgramCache]: Analyzing trace with hash -446635783, now seen corresponding path program 1 times [2023-11-26 11:51:07,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:07,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504754897] [2023-11-26 11:51:07,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:07,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:07,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:07,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-26 11:51:07,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:07,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:07,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:07,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:07,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:07,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:51:07,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:07,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:51:07,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:07,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-26 11:51:07,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:07,317 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 11 proven. 40 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-11-26 11:51:07,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:07,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504754897] [2023-11-26 11:51:07,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504754897] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:51:07,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755566617] [2023-11-26 11:51:07,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:07,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:07,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:07,319 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:51:07,341 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-26 11:51:07,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:07,383 INFO L262 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-26 11:51:07,385 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:51:07,487 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 31 proven. 36 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-26 11:51:07,487 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:51:07,733 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 14 proven. 43 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-26 11:51:07,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755566617] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:51:07,733 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:51:07,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 20 [2023-11-26 11:51:07,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729400068] [2023-11-26 11:51:07,734 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:51:07,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-26 11:51:07,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:07,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-26 11:51:07,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2023-11-26 11:51:07,736 INFO L87 Difference]: Start difference. First operand 307 states and 389 transitions. Second operand has 20 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 17 states have internal predecessors, (90), 10 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (14), 8 states have call predecessors, (14), 7 states have call successors, (14) [2023-11-26 11:51:08,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:08,206 INFO L93 Difference]: Finished difference Result 589 states and 776 transitions. [2023-11-26 11:51:08,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-26 11:51:08,207 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 17 states have internal predecessors, (90), 10 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (14), 8 states have call predecessors, (14), 7 states have call successors, (14) Word has length 75 [2023-11-26 11:51:08,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:08,210 INFO L225 Difference]: With dead ends: 589 [2023-11-26 11:51:08,210 INFO L226 Difference]: Without dead ends: 343 [2023-11-26 11:51:08,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 154 SyntacticMatches, 9 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=115, Invalid=587, Unknown=0, NotChecked=0, Total=702 [2023-11-26 11:51:08,214 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 121 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 506 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:51:08,215 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 506 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:51:08,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2023-11-26 11:51:08,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 313. [2023-11-26 11:51:08,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 248 states have (on average 1.1048387096774193) internal successors, (274), 243 states have internal predecessors, (274), 38 states have call successors, (38), 14 states have call predecessors, (38), 23 states have return successors, (83), 55 states have call predecessors, (83), 37 states have call successors, (83) [2023-11-26 11:51:08,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 395 transitions. [2023-11-26 11:51:08,240 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 395 transitions. Word has length 75 [2023-11-26 11:51:08,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:08,241 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 395 transitions. [2023-11-26 11:51:08,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 17 states have internal predecessors, (90), 10 states have call successors, (16), 5 states have call predecessors, (16), 5 states have return successors, (14), 8 states have call predecessors, (14), 7 states have call successors, (14) [2023-11-26 11:51:08,241 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 395 transitions. [2023-11-26 11:51:08,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2023-11-26 11:51:08,244 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:08,244 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:08,256 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-26 11:51:08,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:08,450 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-26 11:51:08,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:08,450 INFO L85 PathProgramCache]: Analyzing trace with hash -94407406, now seen corresponding path program 1 times [2023-11-26 11:51:08,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:08,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021539432] [2023-11-26 11:51:08,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:08,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:08,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:08,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-26 11:51:08,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:08,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:08,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:08,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:08,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:08,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:51:08,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:08,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:51:08,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:08,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-26 11:51:08,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:08,609 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 18 proven. 38 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-26 11:51:08,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:08,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021539432] [2023-11-26 11:51:08,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021539432] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:51:08,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480369103] [2023-11-26 11:51:08,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:08,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:08,611 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:08,612 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:51:08,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-26 11:51:08,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:08,676 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 11:51:08,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:51:08,727 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 18 proven. 38 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-26 11:51:08,727 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:51:08,861 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 18 proven. 38 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-26 11:51:08,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480369103] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:51:08,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:51:08,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 13 [2023-11-26 11:51:08,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691853060] [2023-11-26 11:51:08,862 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:51:08,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-26 11:51:08,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:08,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-26 11:51:08,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2023-11-26 11:51:08,864 INFO L87 Difference]: Start difference. First operand 313 states and 395 transitions. Second operand has 13 states, 12 states have (on average 4.916666666666667) internal successors, (59), 10 states have internal predecessors, (59), 5 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-26 11:51:09,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:09,076 INFO L93 Difference]: Finished difference Result 556 states and 699 transitions. [2023-11-26 11:51:09,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 11:51:09,077 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.916666666666667) internal successors, (59), 10 states have internal predecessors, (59), 5 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 76 [2023-11-26 11:51:09,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:09,081 INFO L225 Difference]: With dead ends: 556 [2023-11-26 11:51:09,081 INFO L226 Difference]: Without dead ends: 317 [2023-11-26 11:51:09,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 155 SyntacticMatches, 8 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2023-11-26 11:51:09,084 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 98 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 282 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:51:09,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 282 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:51:09,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2023-11-26 11:51:09,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 311. [2023-11-26 11:51:09,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 246 states have (on average 1.1056910569105691) internal successors, (272), 242 states have internal predecessors, (272), 38 states have call successors, (38), 14 states have call predecessors, (38), 23 states have return successors, (82), 54 states have call predecessors, (82), 37 states have call successors, (82) [2023-11-26 11:51:09,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 392 transitions. [2023-11-26 11:51:09,109 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 392 transitions. Word has length 76 [2023-11-26 11:51:09,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:09,109 INFO L495 AbstractCegarLoop]: Abstraction has 311 states and 392 transitions. [2023-11-26 11:51:09,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.916666666666667) internal successors, (59), 10 states have internal predecessors, (59), 5 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-26 11:51:09,110 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 392 transitions. [2023-11-26 11:51:09,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-26 11:51:09,111 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:09,111 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:09,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-26 11:51:09,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2023-11-26 11:51:09,325 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-26 11:51:09,325 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:09,325 INFO L85 PathProgramCache]: Analyzing trace with hash 924780719, now seen corresponding path program 1 times [2023-11-26 11:51:09,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:09,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541029498] [2023-11-26 11:51:09,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:09,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:09,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:09,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 11:51:09,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:09,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:09,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:09,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:51:09,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:09,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-26 11:51:09,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:09,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:09,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:09,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:51:09,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:09,585 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 26 proven. 42 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-26 11:51:09,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:09,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541029498] [2023-11-26 11:51:09,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541029498] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:51:09,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054732566] [2023-11-26 11:51:09,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:09,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:09,587 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:09,588 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:51:09,609 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-26 11:51:09,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:09,651 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:51:09,653 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:51:09,794 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2023-11-26 11:51:09,794 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:51:10,051 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2023-11-26 11:51:10,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054732566] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:51:10,052 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:51:10,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8, 7] total 27 [2023-11-26 11:51:10,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103121579] [2023-11-26 11:51:10,052 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:51:10,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-26 11:51:10,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:10,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-26 11:51:10,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2023-11-26 11:51:10,055 INFO L87 Difference]: Start difference. First operand 311 states and 392 transitions. Second operand has 27 states, 26 states have (on average 3.3846153846153846) internal successors, (88), 23 states have internal predecessors, (88), 11 states have call successors, (16), 5 states have call predecessors, (16), 6 states have return successors, (14), 11 states have call predecessors, (14), 7 states have call successors, (14) [2023-11-26 11:51:11,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:11,229 INFO L93 Difference]: Finished difference Result 621 states and 814 transitions. [2023-11-26 11:51:11,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-26 11:51:11,230 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 3.3846153846153846) internal successors, (88), 23 states have internal predecessors, (88), 11 states have call successors, (16), 5 states have call predecessors, (16), 6 states have return successors, (14), 11 states have call predecessors, (14), 7 states have call successors, (14) Word has length 79 [2023-11-26 11:51:11,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:11,233 INFO L225 Difference]: With dead ends: 621 [2023-11-26 11:51:11,234 INFO L226 Difference]: Without dead ends: 373 [2023-11-26 11:51:11,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 162 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 601 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=444, Invalid=2636, Unknown=0, NotChecked=0, Total=3080 [2023-11-26 11:51:11,238 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 199 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 885 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 11:51:11,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 233 Invalid, 951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 885 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 11:51:11,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2023-11-26 11:51:11,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 314. [2023-11-26 11:51:11,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 247 states have (on average 1.0931174089068827) internal successors, (270), 246 states have internal predecessors, (270), 39 states have call successors, (39), 14 states have call predecessors, (39), 24 states have return successors, (69), 53 states have call predecessors, (69), 38 states have call successors, (69) [2023-11-26 11:51:11,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 378 transitions. [2023-11-26 11:51:11,265 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 378 transitions. Word has length 79 [2023-11-26 11:51:11,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:11,266 INFO L495 AbstractCegarLoop]: Abstraction has 314 states and 378 transitions. [2023-11-26 11:51:11,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 3.3846153846153846) internal successors, (88), 23 states have internal predecessors, (88), 11 states have call successors, (16), 5 states have call predecessors, (16), 6 states have return successors, (14), 11 states have call predecessors, (14), 7 states have call successors, (14) [2023-11-26 11:51:11,266 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 378 transitions. [2023-11-26 11:51:11,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-26 11:51:11,268 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:11,268 INFO L195 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:11,279 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-26 11:51:11,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:11,475 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-26 11:51:11,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:11,475 INFO L85 PathProgramCache]: Analyzing trace with hash -701357590, now seen corresponding path program 1 times [2023-11-26 11:51:11,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:11,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098248356] [2023-11-26 11:51:11,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:11,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:11,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:11,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 11:51:11,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:11,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:11,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:11,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:11,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:11,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:51:11,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:11,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-26 11:51:11,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:11,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-26 11:51:11,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:11,740 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 17 proven. 52 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-26 11:51:11,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:11,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098248356] [2023-11-26 11:51:11,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098248356] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:51:11,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335988953] [2023-11-26 11:51:11,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:11,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:11,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:11,742 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:51:11,762 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-26 11:51:11,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:11,809 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-26 11:51:11,811 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:51:12,016 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2023-11-26 11:51:12,016 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:51:12,554 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-11-26 11:51:12,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335988953] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:51:12,555 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:51:12,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 11] total 30 [2023-11-26 11:51:12,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528172792] [2023-11-26 11:51:12,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:51:12,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-11-26 11:51:12,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:12,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-11-26 11:51:12,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=787, Unknown=0, NotChecked=0, Total=870 [2023-11-26 11:51:12,558 INFO L87 Difference]: Start difference. First operand 314 states and 378 transitions. Second operand has 30 states, 29 states have (on average 3.3793103448275863) internal successors, (98), 26 states have internal predecessors, (98), 12 states have call successors, (15), 5 states have call predecessors, (15), 8 states have return successors, (15), 11 states have call predecessors, (15), 8 states have call successors, (15) [2023-11-26 11:51:14,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:14,092 INFO L93 Difference]: Finished difference Result 651 states and 827 transitions. [2023-11-26 11:51:14,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-11-26 11:51:14,093 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 3.3793103448275863) internal successors, (98), 26 states have internal predecessors, (98), 12 states have call successors, (15), 5 states have call predecessors, (15), 8 states have return successors, (15), 11 states have call predecessors, (15), 8 states have call successors, (15) Word has length 80 [2023-11-26 11:51:14,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:14,096 INFO L225 Difference]: With dead ends: 651 [2023-11-26 11:51:14,096 INFO L226 Difference]: Without dead ends: 378 [2023-11-26 11:51:14,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 164 SyntacticMatches, 3 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 812 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=486, Invalid=3296, Unknown=0, NotChecked=0, Total=3782 [2023-11-26 11:51:14,101 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 216 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 1507 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 1586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-26 11:51:14,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 370 Invalid, 1586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1507 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-26 11:51:14,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2023-11-26 11:51:14,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 299. [2023-11-26 11:51:14,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 235 states have (on average 1.0893617021276596) internal successors, (256), 234 states have internal predecessors, (256), 36 states have call successors, (36), 13 states have call predecessors, (36), 24 states have return successors, (80), 51 states have call predecessors, (80), 35 states have call successors, (80) [2023-11-26 11:51:14,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 372 transitions. [2023-11-26 11:51:14,126 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 372 transitions. Word has length 80 [2023-11-26 11:51:14,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:14,126 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 372 transitions. [2023-11-26 11:51:14,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 3.3793103448275863) internal successors, (98), 26 states have internal predecessors, (98), 12 states have call successors, (15), 5 states have call predecessors, (15), 8 states have return successors, (15), 11 states have call predecessors, (15), 8 states have call successors, (15) [2023-11-26 11:51:14,127 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 372 transitions. [2023-11-26 11:51:14,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-26 11:51:14,128 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:14,128 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:14,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-11-26 11:51:14,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-26 11:51:14,335 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-26 11:51:14,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:14,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1172080739, now seen corresponding path program 1 times [2023-11-26 11:51:14,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:14,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286365226] [2023-11-26 11:51:14,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:14,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:14,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:14,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-26 11:51:14,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:14,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:14,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:14,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:14,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:14,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:51:14,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:14,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:51:14,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:14,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-26 11:51:14,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:14,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:14,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:14,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:51:14,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:14,728 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-11-26 11:51:14,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:14,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286365226] [2023-11-26 11:51:14,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286365226] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:51:14,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19691424] [2023-11-26 11:51:14,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:14,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:14,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:14,732 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:51:14,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-26 11:51:14,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:14,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-26 11:51:14,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:51:14,965 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 8 proven. 19 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-11-26 11:51:14,965 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:51:15,571 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 16 proven. 19 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-11-26 11:51:15,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19691424] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:51:15,571 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:51:15,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 15] total 28 [2023-11-26 11:51:15,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674392198] [2023-11-26 11:51:15,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:51:15,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-26 11:51:15,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:15,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-26 11:51:15,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=699, Unknown=0, NotChecked=0, Total=812 [2023-11-26 11:51:15,574 INFO L87 Difference]: Start difference. First operand 299 states and 372 transitions. Second operand has 29 states, 28 states have (on average 2.7857142857142856) internal successors, (78), 29 states have internal predecessors, (78), 7 states have call successors, (9), 1 states have call predecessors, (9), 10 states have return successors, (17), 16 states have call predecessors, (17), 7 states have call successors, (17) [2023-11-26 11:51:16,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:16,091 INFO L93 Difference]: Finished difference Result 502 states and 670 transitions. [2023-11-26 11:51:16,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-11-26 11:51:16,092 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 2.7857142857142856) internal successors, (78), 29 states have internal predecessors, (78), 7 states have call successors, (9), 1 states have call predecessors, (9), 10 states have return successors, (17), 16 states have call predecessors, (17), 7 states have call successors, (17) Word has length 94 [2023-11-26 11:51:16,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:16,096 INFO L225 Difference]: With dead ends: 502 [2023-11-26 11:51:16,096 INFO L226 Difference]: Without dead ends: 500 [2023-11-26 11:51:16,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 187 SyntacticMatches, 5 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 541 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=319, Invalid=1751, Unknown=0, NotChecked=0, Total=2070 [2023-11-26 11:51:16,098 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 50 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:51:16,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 534 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:51:16,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2023-11-26 11:51:16,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 265. [2023-11-26 11:51:16,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 208 states have (on average 1.0576923076923077) internal successors, (220), 210 states have internal predecessors, (220), 34 states have call successors, (34), 13 states have call predecessors, (34), 21 states have return successors, (70), 41 states have call predecessors, (70), 33 states have call successors, (70) [2023-11-26 11:51:16,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 324 transitions. [2023-11-26 11:51:16,126 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 324 transitions. Word has length 94 [2023-11-26 11:51:16,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:16,127 INFO L495 AbstractCegarLoop]: Abstraction has 265 states and 324 transitions. [2023-11-26 11:51:16,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 2.7857142857142856) internal successors, (78), 29 states have internal predecessors, (78), 7 states have call successors, (9), 1 states have call predecessors, (9), 10 states have return successors, (17), 16 states have call predecessors, (17), 7 states have call successors, (17) [2023-11-26 11:51:16,127 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 324 transitions. [2023-11-26 11:51:16,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2023-11-26 11:51:16,128 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:16,129 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:16,139 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-26 11:51:16,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2023-11-26 11:51:16,339 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-26 11:51:16,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:16,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1974764640, now seen corresponding path program 1 times [2023-11-26 11:51:16,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:16,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756365505] [2023-11-26 11:51:16,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:16,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:16,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:16,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-26 11:51:16,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:16,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:16,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:16,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:16,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:16,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:51:16,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:16,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:51:16,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:16,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-26 11:51:16,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:16,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:16,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:16,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:51:16,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:16,721 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-11-26 11:51:16,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:16,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756365505] [2023-11-26 11:51:16,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756365505] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:51:16,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266354834] [2023-11-26 11:51:16,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:16,722 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:16,722 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:16,723 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:51:16,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-26 11:51:16,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:16,810 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-26 11:51:16,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:51:16,945 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-11-26 11:51:16,946 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:51:17,611 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 23 proven. 13 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-11-26 11:51:17,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266354834] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:51:17,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:51:17,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 16] total 26 [2023-11-26 11:51:17,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225775532] [2023-11-26 11:51:17,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:51:17,613 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-26 11:51:17,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:17,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-26 11:51:17,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2023-11-26 11:51:17,614 INFO L87 Difference]: Start difference. First operand 265 states and 324 transitions. Second operand has 27 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 27 states have internal predecessors, (75), 7 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (17), 17 states have call predecessors, (17), 7 states have call successors, (17) [2023-11-26 11:51:17,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:17,889 INFO L93 Difference]: Finished difference Result 376 states and 477 transitions. [2023-11-26 11:51:17,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-26 11:51:17,890 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 27 states have internal predecessors, (75), 7 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (17), 17 states have call predecessors, (17), 7 states have call successors, (17) Word has length 95 [2023-11-26 11:51:17,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:17,894 INFO L225 Difference]: With dead ends: 376 [2023-11-26 11:51:17,894 INFO L226 Difference]: Without dead ends: 374 [2023-11-26 11:51:17,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 189 SyntacticMatches, 7 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 339 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=152, Invalid=840, Unknown=0, NotChecked=0, Total=992 [2023-11-26 11:51:17,896 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 18 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:51:17,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 420 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:51:17,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2023-11-26 11:51:17,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 252. [2023-11-26 11:51:17,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 197 states have (on average 1.0406091370558375) internal successors, (205), 201 states have internal predecessors, (205), 31 states have call successors, (31), 13 states have call predecessors, (31), 22 states have return successors, (64), 37 states have call predecessors, (64), 30 states have call successors, (64) [2023-11-26 11:51:17,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 300 transitions. [2023-11-26 11:51:17,921 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 300 transitions. Word has length 95 [2023-11-26 11:51:17,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:17,921 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 300 transitions. [2023-11-26 11:51:17,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.8846153846153846) internal successors, (75), 27 states have internal predecessors, (75), 7 states have call successors, (9), 1 states have call predecessors, (9), 8 states have return successors, (17), 17 states have call predecessors, (17), 7 states have call successors, (17) [2023-11-26 11:51:17,921 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 300 transitions. [2023-11-26 11:51:17,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2023-11-26 11:51:17,924 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:17,924 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2023-11-26 11:51:17,931 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2023-11-26 11:51:18,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2023-11-26 11:51:18,130 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-26 11:51:18,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:18,130 INFO L85 PathProgramCache]: Analyzing trace with hash -341892502, now seen corresponding path program 1 times [2023-11-26 11:51:18,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:18,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252875302] [2023-11-26 11:51:18,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:18,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:18,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:18,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:51:18,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:18,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:18,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:18,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:18,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:18,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:18,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:18,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:51:18,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:18,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:51:18,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:18,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-26 11:51:18,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:18,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:18,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:18,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:51:18,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:18,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-26 11:51:18,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:18,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:18,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:18,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:18,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:18,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:51:18,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:18,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:51:18,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:18,911 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 45 proven. 59 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-11-26 11:51:18,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:18,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252875302] [2023-11-26 11:51:18,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252875302] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:51:18,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991844386] [2023-11-26 11:51:18,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:18,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:18,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:18,914 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:51:18,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-26 11:51:19,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:19,028 INFO L262 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-26 11:51:19,032 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:51:19,325 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 45 proven. 59 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2023-11-26 11:51:19,325 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:51:20,873 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 74 proven. 54 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2023-11-26 11:51:20,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991844386] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:51:20,874 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:51:20,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 22] total 36 [2023-11-26 11:51:20,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432544511] [2023-11-26 11:51:20,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:51:20,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-11-26 11:51:20,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:20,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-11-26 11:51:20,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=1152, Unknown=0, NotChecked=0, Total=1332 [2023-11-26 11:51:20,878 INFO L87 Difference]: Start difference. First operand 252 states and 300 transitions. Second operand has 37 states, 36 states have (on average 2.75) internal successors, (99), 37 states have internal predecessors, (99), 9 states have call successors, (11), 1 states have call predecessors, (11), 11 states have return successors, (24), 24 states have call predecessors, (24), 9 states have call successors, (24) [2023-11-26 11:51:21,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:21,350 INFO L93 Difference]: Finished difference Result 386 states and 456 transitions. [2023-11-26 11:51:21,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-11-26 11:51:21,351 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.75) internal successors, (99), 37 states have internal predecessors, (99), 9 states have call successors, (11), 1 states have call predecessors, (11), 11 states have return successors, (24), 24 states have call predecessors, (24), 9 states have call successors, (24) Word has length 148 [2023-11-26 11:51:21,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:21,355 INFO L225 Difference]: With dead ends: 386 [2023-11-26 11:51:21,355 INFO L226 Difference]: Without dead ends: 381 [2023-11-26 11:51:21,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 300 SyntacticMatches, 16 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1114 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=315, Invalid=1941, Unknown=0, NotChecked=0, Total=2256 [2023-11-26 11:51:21,357 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 38 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:51:21,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 396 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:51:21,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2023-11-26 11:51:21,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 294. [2023-11-26 11:51:21,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 230 states have (on average 1.0347826086956522) internal successors, (238), 234 states have internal predecessors, (238), 34 states have call successors, (34), 13 states have call predecessors, (34), 28 states have return successors, (78), 46 states have call predecessors, (78), 33 states have call successors, (78) [2023-11-26 11:51:21,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 350 transitions. [2023-11-26 11:51:21,401 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 350 transitions. Word has length 148 [2023-11-26 11:51:21,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:21,402 INFO L495 AbstractCegarLoop]: Abstraction has 294 states and 350 transitions. [2023-11-26 11:51:21,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.75) internal successors, (99), 37 states have internal predecessors, (99), 9 states have call successors, (11), 1 states have call predecessors, (11), 11 states have return successors, (24), 24 states have call predecessors, (24), 9 states have call successors, (24) [2023-11-26 11:51:21,403 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 350 transitions. [2023-11-26 11:51:21,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-11-26 11:51:21,407 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:21,407 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 9, 8, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1] [2023-11-26 11:51:21,421 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-26 11:51:21,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2023-11-26 11:51:21,615 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-26 11:51:21,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:21,616 INFO L85 PathProgramCache]: Analyzing trace with hash -2047043206, now seen corresponding path program 1 times [2023-11-26 11:51:21,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:21,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720356437] [2023-11-26 11:51:21,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:21,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:21,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:21,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:51:21,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:21,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:21,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:21,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:21,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:21,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:21,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:21,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:51:21,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:21,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:51:21,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:21,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-26 11:51:21,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:21,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:21,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:21,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:51:21,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:21,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-11-26 11:51:21,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:21,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:21,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:22,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:22,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:22,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:51:22,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:22,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-26 11:51:22,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:22,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:22,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:22,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:22,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:22,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:51:22,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:22,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-26 11:51:22,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:22,206 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 159 proven. 112 refuted. 0 times theorem prover too weak. 299 trivial. 0 not checked. [2023-11-26 11:51:22,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:22,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720356437] [2023-11-26 11:51:22,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720356437] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:51:22,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794247369] [2023-11-26 11:51:22,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:22,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:22,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:22,209 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:51:22,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-26 11:51:22,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:22,359 INFO L262 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-26 11:51:22,363 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:51:22,547 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 374 proven. 48 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-11-26 11:51:22,547 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:51:23,127 INFO L134 CoverageAnalysis]: Checked inductivity of 570 backedges. 68 proven. 188 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2023-11-26 11:51:23,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794247369] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:51:23,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:51:23,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 13] total 24 [2023-11-26 11:51:23,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191406567] [2023-11-26 11:51:23,128 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:51:23,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-11-26 11:51:23,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:23,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-11-26 11:51:23,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=475, Unknown=0, NotChecked=0, Total=552 [2023-11-26 11:51:23,132 INFO L87 Difference]: Start difference. First operand 294 states and 350 transitions. Second operand has 24 states, 23 states have (on average 6.217391304347826) internal successors, (143), 22 states have internal predecessors, (143), 13 states have call successors, (26), 4 states have call predecessors, (26), 8 states have return successors, (26), 14 states have call predecessors, (26), 11 states have call successors, (26) [2023-11-26 11:51:23,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:23,735 INFO L93 Difference]: Finished difference Result 543 states and 669 transitions. [2023-11-26 11:51:23,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-26 11:51:23,736 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.217391304347826) internal successors, (143), 22 states have internal predecessors, (143), 13 states have call successors, (26), 4 states have call predecessors, (26), 8 states have return successors, (26), 14 states have call predecessors, (26), 11 states have call successors, (26) Word has length 188 [2023-11-26 11:51:23,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:23,739 INFO L225 Difference]: With dead ends: 543 [2023-11-26 11:51:23,739 INFO L226 Difference]: Without dead ends: 285 [2023-11-26 11:51:23,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 440 GetRequests, 396 SyntacticMatches, 8 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=233, Invalid=1173, Unknown=0, NotChecked=0, Total=1406 [2023-11-26 11:51:23,743 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 152 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:51:23,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 303 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 11:51:23,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2023-11-26 11:51:23,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 268. [2023-11-26 11:51:23,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 211 states have (on average 1.033175355450237) internal successors, (218), 212 states have internal predecessors, (218), 32 states have call successors, (32), 17 states have call predecessors, (32), 24 states have return successors, (55), 38 states have call predecessors, (55), 31 states have call successors, (55) [2023-11-26 11:51:23,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 305 transitions. [2023-11-26 11:51:23,771 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 305 transitions. Word has length 188 [2023-11-26 11:51:23,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:23,772 INFO L495 AbstractCegarLoop]: Abstraction has 268 states and 305 transitions. [2023-11-26 11:51:23,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.217391304347826) internal successors, (143), 22 states have internal predecessors, (143), 13 states have call successors, (26), 4 states have call predecessors, (26), 8 states have return successors, (26), 14 states have call predecessors, (26), 11 states have call successors, (26) [2023-11-26 11:51:23,772 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 305 transitions. [2023-11-26 11:51:23,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2023-11-26 11:51:23,777 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:23,777 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 11, 10, 10, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 1, 1, 1, 1] [2023-11-26 11:51:23,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-26 11:51:23,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2023-11-26 11:51:23,985 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-26 11:51:23,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:23,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1525258940, now seen corresponding path program 2 times [2023-11-26 11:51:23,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:23,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010925698] [2023-11-26 11:51:23,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:23,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:24,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:24,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-26 11:51:24,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:24,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:24,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:24,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:24,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:24,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:24,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:24,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:24,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:24,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:51:24,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:24,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:51:24,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:24,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-26 11:51:24,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:24,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:24,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:24,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:51:24,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:24,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-26 11:51:24,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:24,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:24,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:24,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:24,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:24,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:24,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:24,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:51:24,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:24,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-26 11:51:24,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:24,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-26 11:51:24,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:24,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2023-11-26 11:51:24,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:24,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:24,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:24,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:24,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:24,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:51:24,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:24,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:51:24,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:24,441 INFO L134 CoverageAnalysis]: Checked inductivity of 787 backedges. 210 proven. 58 refuted. 0 times theorem prover too weak. 519 trivial. 0 not checked. [2023-11-26 11:51:24,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:24,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010925698] [2023-11-26 11:51:24,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010925698] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:51:24,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211185473] [2023-11-26 11:51:24,442 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:51:24,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:24,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:24,443 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:51:24,471 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-26 11:51:24,596 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 11:51:24,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:51:24,598 INFO L262 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-26 11:51:24,603 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:51:24,798 INFO L134 CoverageAnalysis]: Checked inductivity of 787 backedges. 460 proven. 64 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2023-11-26 11:51:24,798 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:51:25,734 INFO L134 CoverageAnalysis]: Checked inductivity of 787 backedges. 176 proven. 155 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2023-11-26 11:51:25,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1211185473] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:51:25,735 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:51:25,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 13] total 25 [2023-11-26 11:51:25,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398152654] [2023-11-26 11:51:25,735 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:51:25,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-26 11:51:25,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:25,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-26 11:51:25,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=517, Unknown=0, NotChecked=0, Total=600 [2023-11-26 11:51:25,739 INFO L87 Difference]: Start difference. First operand 268 states and 305 transitions. Second operand has 25 states, 23 states have (on average 6.565217391304348) internal successors, (151), 23 states have internal predecessors, (151), 16 states have call successors, (27), 4 states have call predecessors, (27), 9 states have return successors, (26), 13 states have call predecessors, (26), 14 states have call successors, (26) [2023-11-26 11:51:26,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:26,399 INFO L93 Difference]: Finished difference Result 516 states and 607 transitions. [2023-11-26 11:51:26,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-26 11:51:26,400 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 6.565217391304348) internal successors, (151), 23 states have internal predecessors, (151), 16 states have call successors, (27), 4 states have call predecessors, (27), 9 states have return successors, (26), 13 states have call predecessors, (26), 14 states have call successors, (26) Word has length 220 [2023-11-26 11:51:26,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:26,402 INFO L225 Difference]: With dead ends: 516 [2023-11-26 11:51:26,402 INFO L226 Difference]: Without dead ends: 255 [2023-11-26 11:51:26,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 504 GetRequests, 462 SyntacticMatches, 7 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 314 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=195, Invalid=1137, Unknown=0, NotChecked=0, Total=1332 [2023-11-26 11:51:26,405 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 180 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 738 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:51:26,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 433 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 738 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 11:51:26,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2023-11-26 11:51:26,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 233. [2023-11-26 11:51:26,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 184 states have (on average 1.0380434782608696) internal successors, (191), 185 states have internal predecessors, (191), 28 states have call successors, (28), 17 states have call predecessors, (28), 20 states have return successors, (37), 30 states have call predecessors, (37), 27 states have call successors, (37) [2023-11-26 11:51:26,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 256 transitions. [2023-11-26 11:51:26,425 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 256 transitions. Word has length 220 [2023-11-26 11:51:26,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:26,425 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 256 transitions. [2023-11-26 11:51:26,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 6.565217391304348) internal successors, (151), 23 states have internal predecessors, (151), 16 states have call successors, (27), 4 states have call predecessors, (27), 9 states have return successors, (26), 13 states have call predecessors, (26), 14 states have call successors, (26) [2023-11-26 11:51:26,426 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 256 transitions. [2023-11-26 11:51:26,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2023-11-26 11:51:26,429 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:26,429 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 10, 10, 10, 8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 2, 2, 1, 1, 1] [2023-11-26 11:51:26,440 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-26 11:51:26,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:26,635 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-26 11:51:26,636 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:26,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1785260538, now seen corresponding path program 3 times [2023-11-26 11:51:26,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:26,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831254211] [2023-11-26 11:51:26,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:26,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:26,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:26,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-26 11:51:26,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:26,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:26,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:26,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:26,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:26,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:26,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:26,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:26,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:26,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:51:26,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:26,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:51:26,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:26,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-26 11:51:26,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:26,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:26,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:26,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:51:26,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:26,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-26 11:51:26,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:26,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:26,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:26,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:26,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:26,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:51:26,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:26,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:51:26,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:27,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2023-11-26 11:51:27,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:27,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:27,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:27,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:27,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:27,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:27,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:27,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:51:27,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:27,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:51:27,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:27,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-26 11:51:27,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:27,244 INFO L134 CoverageAnalysis]: Checked inductivity of 791 backedges. 245 proven. 62 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2023-11-26 11:51:27,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:27,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831254211] [2023-11-26 11:51:27,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831254211] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:51:27,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272702418] [2023-11-26 11:51:27,245 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-26 11:51:27,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:27,246 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:27,247 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:51:27,257 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-26 11:51:27,392 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2023-11-26 11:51:27,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:51:27,394 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:51:27,400 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:51:27,518 INFO L134 CoverageAnalysis]: Checked inductivity of 791 backedges. 209 proven. 7 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2023-11-26 11:51:27,519 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:51:28,085 INFO L134 CoverageAnalysis]: Checked inductivity of 791 backedges. 209 proven. 7 refuted. 0 times theorem prover too weak. 575 trivial. 0 not checked. [2023-11-26 11:51:28,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272702418] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:51:28,085 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:51:28,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 9] total 21 [2023-11-26 11:51:28,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419175882] [2023-11-26 11:51:28,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:51:28,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-11-26 11:51:28,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:28,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-11-26 11:51:28,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2023-11-26 11:51:28,091 INFO L87 Difference]: Start difference. First operand 233 states and 256 transitions. Second operand has 21 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 9 states have call successors, (17), 2 states have call predecessors, (17), 6 states have return successors, (17), 10 states have call predecessors, (17), 8 states have call successors, (17) [2023-11-26 11:51:28,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:28,471 INFO L93 Difference]: Finished difference Result 379 states and 423 transitions. [2023-11-26 11:51:28,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 11:51:28,472 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 9 states have call successors, (17), 2 states have call predecessors, (17), 6 states have return successors, (17), 10 states have call predecessors, (17), 8 states have call successors, (17) Word has length 220 [2023-11-26 11:51:28,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:28,474 INFO L225 Difference]: With dead ends: 379 [2023-11-26 11:51:28,474 INFO L226 Difference]: Without dead ends: 232 [2023-11-26 11:51:28,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 472 SyntacticMatches, 4 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2023-11-26 11:51:28,477 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 76 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:51:28,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 293 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:51:28,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2023-11-26 11:51:28,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 227. [2023-11-26 11:51:28,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 180 states have (on average 1.0333333333333334) internal successors, (186), 179 states have internal predecessors, (186), 28 states have call successors, (28), 19 states have call predecessors, (28), 18 states have return successors, (33), 28 states have call predecessors, (33), 27 states have call successors, (33) [2023-11-26 11:51:28,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 247 transitions. [2023-11-26 11:51:28,500 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 247 transitions. Word has length 220 [2023-11-26 11:51:28,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:28,501 INFO L495 AbstractCegarLoop]: Abstraction has 227 states and 247 transitions. [2023-11-26 11:51:28,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 5.1) internal successors, (102), 20 states have internal predecessors, (102), 9 states have call successors, (17), 2 states have call predecessors, (17), 6 states have return successors, (17), 10 states have call predecessors, (17), 8 states have call successors, (17) [2023-11-26 11:51:28,501 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 247 transitions. [2023-11-26 11:51:28,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2023-11-26 11:51:28,506 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:28,506 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 10, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 3, 3, 3, 1, 1, 1] [2023-11-26 11:51:28,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2023-11-26 11:51:28,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:28,714 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-26 11:51:28,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:28,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1937441536, now seen corresponding path program 4 times [2023-11-26 11:51:28,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:28,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388366375] [2023-11-26 11:51:28,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:28,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:28,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:28,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-26 11:51:28,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:28,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:28,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:28,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:28,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:28,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:28,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:28,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:28,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:28,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:51:28,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:28,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:51:28,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:28,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-26 11:51:28,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:28,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:28,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:28,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:51:28,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:28,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-26 11:51:28,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:28,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:28,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:28,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:28,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:28,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:51:28,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:28,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:51:28,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:28,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-11-26 11:51:28,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:29,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:29,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:29,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:29,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:29,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:29,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:29,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:51:29,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:29,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:51:29,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:29,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-26 11:51:29,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:29,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:29,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:29,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:51:29,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:29,098 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 155 proven. 3 refuted. 0 times theorem prover too weak. 775 trivial. 0 not checked. [2023-11-26 11:51:29,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:29,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388366375] [2023-11-26 11:51:29,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388366375] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:51:29,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571540989] [2023-11-26 11:51:29,100 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-26 11:51:29,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:29,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:29,101 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:51:29,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2023-11-26 11:51:29,262 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-26 11:51:29,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:51:29,264 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-26 11:51:29,270 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:51:29,589 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 201 proven. 318 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2023-11-26 11:51:29,589 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:51:31,140 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 201 proven. 331 refuted. 0 times theorem prover too weak. 401 trivial. 0 not checked. [2023-11-26 11:51:31,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [571540989] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:51:31,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:51:31,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 15, 19] total 26 [2023-11-26 11:51:31,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388799245] [2023-11-26 11:51:31,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:51:31,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-11-26 11:51:31,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:31,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-11-26 11:51:31,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=563, Unknown=0, NotChecked=0, Total=650 [2023-11-26 11:51:31,144 INFO L87 Difference]: Start difference. First operand 227 states and 247 transitions. Second operand has 26 states, 26 states have (on average 5.923076923076923) internal successors, (154), 26 states have internal predecessors, (154), 19 states have call successors, (25), 1 states have call predecessors, (25), 10 states have return successors, (29), 11 states have call predecessors, (29), 19 states have call successors, (29) [2023-11-26 11:51:31,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:31,719 INFO L93 Difference]: Finished difference Result 353 states and 388 transitions. [2023-11-26 11:51:31,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-11-26 11:51:31,720 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.923076923076923) internal successors, (154), 26 states have internal predecessors, (154), 19 states have call successors, (25), 1 states have call predecessors, (25), 10 states have return successors, (29), 11 states have call predecessors, (29), 19 states have call successors, (29) Word has length 239 [2023-11-26 11:51:31,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:31,722 INFO L225 Difference]: With dead ends: 353 [2023-11-26 11:51:31,722 INFO L226 Difference]: Without dead ends: 244 [2023-11-26 11:51:31,725 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 500 SyntacticMatches, 9 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 321 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=246, Invalid=1236, Unknown=0, NotChecked=0, Total=1482 [2023-11-26 11:51:31,725 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 181 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 587 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:51:31,726 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 393 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 587 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 11:51:31,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2023-11-26 11:51:31,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 225. [2023-11-26 11:51:31,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 178 states have (on average 1.0224719101123596) internal successors, (182), 178 states have internal predecessors, (182), 28 states have call successors, (28), 18 states have call predecessors, (28), 18 states have return successors, (31), 28 states have call predecessors, (31), 27 states have call successors, (31) [2023-11-26 11:51:31,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 241 transitions. [2023-11-26 11:51:31,748 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 241 transitions. Word has length 239 [2023-11-26 11:51:31,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:31,749 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 241 transitions. [2023-11-26 11:51:31,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.923076923076923) internal successors, (154), 26 states have internal predecessors, (154), 19 states have call successors, (25), 1 states have call predecessors, (25), 10 states have return successors, (29), 11 states have call predecessors, (29), 19 states have call successors, (29) [2023-11-26 11:51:31,749 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 241 transitions. [2023-11-26 11:51:31,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2023-11-26 11:51:31,753 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:31,753 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 3, 2, 1, 1, 1] [2023-11-26 11:51:31,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2023-11-26 11:51:31,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2023-11-26 11:51:31,959 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-26 11:51:31,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:31,960 INFO L85 PathProgramCache]: Analyzing trace with hash 2061307917, now seen corresponding path program 5 times [2023-11-26 11:51:31,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:31,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090110220] [2023-11-26 11:51:31,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:31,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:31,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:32,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-26 11:51:32,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:33,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:33,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:33,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:33,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:33,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:33,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:33,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:33,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:33,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:51:33,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:33,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:51:33,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:33,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-26 11:51:33,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:33,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:33,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:33,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:51:33,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:33,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-26 11:51:33,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:33,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:33,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:33,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:33,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:33,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:51:33,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:33,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:51:33,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:33,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2023-11-26 11:51:33,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:33,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:33,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:33,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:33,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:33,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:33,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:33,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:51:33,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:33,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:51:33,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:33,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-26 11:51:33,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:33,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:33,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:33,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:51:33,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:33,945 INFO L134 CoverageAnalysis]: Checked inductivity of 942 backedges. 148 proven. 181 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2023-11-26 11:51:33,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:33,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090110220] [2023-11-26 11:51:33,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090110220] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:51:33,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367763834] [2023-11-26 11:51:33,947 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-26 11:51:33,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:33,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:33,948 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:51:33,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f029ffc-fc7f-4105-96c7-e5587b2f20a6/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2023-11-26 11:51:34,125 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2023-11-26 11:51:34,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:51:34,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 49 conjunts are in the unsatisfiable core [2023-11-26 11:51:34,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:51:34,576 INFO L134 CoverageAnalysis]: Checked inductivity of 942 backedges. 148 proven. 181 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2023-11-26 11:51:34,576 INFO L327 TraceCheckSpWp]: Computing backward predicates...