./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_4-2.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_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/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_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_4-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/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_dc163714-4cad-446b-9858-f2c9503853b3/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 22d9a6832a4080412e38f5d573b63985f3b10b3c2009b6559595c7c0bbda414f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:51:35,455 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:51:35,579 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 11:51:35,587 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:51:35,588 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:51:35,629 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:51:35,630 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:51:35,631 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:51:35,632 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:51:35,637 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:51:35,638 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:51:35,638 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:51:35,639 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:51:35,641 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:51:35,641 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:51:35,642 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:51:35,642 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:51:35,643 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:51:35,643 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:51:35,644 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:51:35,645 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:51:35,646 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:51:35,647 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:51:35,647 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:51:35,648 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 11:51:35,648 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 11:51:35,648 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:51:35,649 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:51:35,649 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:51:35,650 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:51:35,652 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:51:35,652 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:51:35,653 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:51:35,653 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:51:35,653 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:51:35,654 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:51:35,654 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:51:35,654 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:51:35,655 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:51:35,655 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:51:35,655 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:51:35,656 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:51:35,656 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:51:35,656 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:51:35,657 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_dc163714-4cad-446b-9858-f2c9503853b3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22d9a6832a4080412e38f5d573b63985f3b10b3c2009b6559595c7c0bbda414f [2023-11-26 11:51:36,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:51:36,058 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:51:36,060 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:51:36,062 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:51:36,062 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:51:36,064 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/recursive-simple/fibo_2calls_4-2.c [2023-11-26 11:51:39,209 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:51:39,436 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:51:39,437 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/sv-benchmarks/c/recursive-simple/fibo_2calls_4-2.c [2023-11-26 11:51:39,446 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/data/1b8b218fb/1c580e4e56a64b9fbf26c7e5ad7cc9e8/FLAGbc4955121 [2023-11-26 11:51:39,462 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/data/1b8b218fb/1c580e4e56a64b9fbf26c7e5ad7cc9e8 [2023-11-26 11:51:39,464 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:51:39,466 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:51:39,468 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:51:39,468 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:51:39,474 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:51:39,475 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:51:39" (1/1) ... [2023-11-26 11:51:39,476 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f5f8b8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:39, skipping insertion in model container [2023-11-26 11:51:39,476 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:51:39" (1/1) ... [2023-11-26 11:51:39,500 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:51:39,694 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:51:39,707 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:51:39,737 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:51:39,756 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:51:39,756 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:39 WrapperNode [2023-11-26 11:51:39,756 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:51:39,758 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:51:39,758 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:51:39,758 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:51:39,767 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:39" (1/1) ... [2023-11-26 11:51:39,773 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:39" (1/1) ... [2023-11-26 11:51:39,793 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 21 [2023-11-26 11:51:39,794 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:51:39,794 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:51:39,795 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:51:39,795 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:51:39,815 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:39" (1/1) ... [2023-11-26 11:51:39,817 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:39" (1/1) ... [2023-11-26 11:51:39,819 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:39" (1/1) ... [2023-11-26 11:51:39,839 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 11:51:39,839 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:39" (1/1) ... [2023-11-26 11:51:39,839 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:39" (1/1) ... [2023-11-26 11:51:39,842 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:39" (1/1) ... [2023-11-26 11:51:39,845 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:39" (1/1) ... [2023-11-26 11:51:39,845 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:39" (1/1) ... [2023-11-26 11:51:39,846 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:39" (1/1) ... [2023-11-26 11:51:39,851 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:51:39,852 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:51:39,853 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:51:39,853 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:51:39,854 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:39" (1/1) ... [2023-11-26 11:51:39,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:51:39,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:39,898 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:51:39,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:51:39,935 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:51:39,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:51:39,935 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2023-11-26 11:51:39,935 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2023-11-26 11:51:39,935 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2023-11-26 11:51:39,935 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2023-11-26 11:51:39,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:51:39,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:51:39,999 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:51:40,001 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:51:40,226 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:51:40,255 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:51:40,256 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-26 11:51:40,256 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:51:40 BoogieIcfgContainer [2023-11-26 11:51:40,256 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:51:40,259 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:51:40,259 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:51:40,263 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:51:40,264 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:51:39" (1/3) ... [2023-11-26 11:51:40,265 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10ac9769 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:51:40, skipping insertion in model container [2023-11-26 11:51:40,265 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:51:39" (2/3) ... [2023-11-26 11:51:40,266 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10ac9769 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:51:40, skipping insertion in model container [2023-11-26 11:51:40,266 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:51:40" (3/3) ... [2023-11-26 11:51:40,267 INFO L112 eAbstractionObserver]: Analyzing ICFG fibo_2calls_4-2.c [2023-11-26 11:51:40,290 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:51:40,291 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-26 11:51:40,349 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:51:40,357 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;@772e40b7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:51:40,358 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2023-11-26 11:51:40,363 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 11:51:40,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-26 11:51:40,372 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:40,373 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-26 11:51:40,374 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-26 11:51:40,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:40,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1021543012, now seen corresponding path program 1 times [2023-11-26 11:51:40,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:40,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49737187] [2023-11-26 11:51:40,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:40,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:40,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:40,573 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 11:51:40,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:40,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49737187] [2023-11-26 11:51:40,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49737187] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:40,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:40,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:51:40,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141802298] [2023-11-26 11:51:40,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:40,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:51:40,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:40,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:51:40,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:51:40,631 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 11:51:40,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:40,698 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2023-11-26 11:51:40,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:51:40,701 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 11:51:40,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:40,710 INFO L225 Difference]: With dead ends: 52 [2023-11-26 11:51:40,710 INFO L226 Difference]: Without dead ends: 44 [2023-11-26 11:51:40,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:51:40,717 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 11:51:40,718 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 11:51:40,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2023-11-26 11:51:40,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2023-11-26 11:51:40,775 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 11:51:40,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2023-11-26 11:51:40,779 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 6 [2023-11-26 11:51:40,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:40,779 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2023-11-26 11:51:40,779 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 11:51:40,780 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2023-11-26 11:51:40,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-26 11:51:40,780 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:40,781 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:40,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:51:40,781 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-26 11:51:40,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:40,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1603062213, now seen corresponding path program 1 times [2023-11-26 11:51:40,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:40,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322514154] [2023-11-26 11:51:40,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:40,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:40,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:40,877 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 11:51:40,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:40,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1322514154] [2023-11-26 11:51:40,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1322514154] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:40,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:40,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:51:40,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763989877] [2023-11-26 11:51:40,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:40,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:51:40,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:40,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:51:40,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:51:40,882 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 11:51:41,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:41,023 INFO L93 Difference]: Finished difference Result 63 states and 73 transitions. [2023-11-26 11:51:41,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:51:41,024 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 11:51:41,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:41,026 INFO L225 Difference]: With dead ends: 63 [2023-11-26 11:51:41,026 INFO L226 Difference]: Without dead ends: 59 [2023-11-26 11:51:41,027 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 11:51:41,029 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 11:51:41,029 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 11:51:41,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2023-11-26 11:51:41,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2023-11-26 11:51:41,056 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 11:51:41,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 64 transitions. [2023-11-26 11:51:41,061 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 64 transitions. Word has length 7 [2023-11-26 11:51:41,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:41,063 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 64 transitions. [2023-11-26 11:51:41,064 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 11:51:41,067 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 64 transitions. [2023-11-26 11:51:41,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-26 11:51:41,068 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:41,068 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:41,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:51:41,069 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-26 11:51:41,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:41,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1070030294, now seen corresponding path program 1 times [2023-11-26 11:51:41,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:41,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043747384] [2023-11-26 11:51:41,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:41,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:41,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:41,174 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 11:51:41,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:41,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043747384] [2023-11-26 11:51:41,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043747384] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:41,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:41,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:51:41,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948679373] [2023-11-26 11:51:41,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:41,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:51:41,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:41,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:51:41,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:51:41,184 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 11:51:41,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:41,218 INFO L93 Difference]: Finished difference Result 57 states and 69 transitions. [2023-11-26 11:51:41,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:51:41,219 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 11:51:41,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:41,221 INFO L225 Difference]: With dead ends: 57 [2023-11-26 11:51:41,221 INFO L226 Difference]: Without dead ends: 55 [2023-11-26 11:51:41,222 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 11:51:41,223 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 11:51:41,224 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 11:51:41,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2023-11-26 11:51:41,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2023-11-26 11:51:41,234 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 11:51:41,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2023-11-26 11:51:41,237 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 12 [2023-11-26 11:51:41,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:41,237 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2023-11-26 11:51:41,238 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 11:51:41,238 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2023-11-26 11:51:41,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-26 11:51:41,239 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:41,239 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:41,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:51:41,240 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-26 11:51:41,240 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:41,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1188799193, now seen corresponding path program 1 times [2023-11-26 11:51:41,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:41,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878962176] [2023-11-26 11:51:41,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:41,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:41,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:41,370 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 11:51:41,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:41,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878962176] [2023-11-26 11:51:41,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878962176] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:41,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:41,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:51:41,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213979899] [2023-11-26 11:51:41,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:41,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:51:41,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:41,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:51:41,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:51:41,374 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 11:51:41,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:41,505 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2023-11-26 11:51:41,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:51:41,506 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 11:51:41,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:41,507 INFO L225 Difference]: With dead ends: 53 [2023-11-26 11:51:41,508 INFO L226 Difference]: Without dead ends: 49 [2023-11-26 11:51:41,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:51:41,510 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 11:51:41,511 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 11:51:41,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2023-11-26 11:51:41,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2023-11-26 11:51:41,521 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 11:51:41,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 58 transitions. [2023-11-26 11:51:41,524 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 58 transitions. Word has length 13 [2023-11-26 11:51:41,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:41,525 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 58 transitions. [2023-11-26 11:51:41,525 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 11:51:41,525 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 58 transitions. [2023-11-26 11:51:41,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-11-26 11:51:41,527 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:41,527 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 11:51:41,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 11:51:41,528 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-26 11:51:41,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:41,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1317113808, now seen corresponding path program 1 times [2023-11-26 11:51:41,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:41,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026880983] [2023-11-26 11:51:41,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:41,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:41,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:41,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-26 11:51:41,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:41,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 11:51:41,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:41,750 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 11:51:41,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:41,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026880983] [2023-11-26 11:51:41,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026880983] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:41,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:41,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:51:41,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362444051] [2023-11-26 11:51:41,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:41,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:51:41,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:41,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:51:41,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:51:41,755 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 11:51:41,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:41,802 INFO L93 Difference]: Finished difference Result 75 states and 93 transitions. [2023-11-26 11:51:41,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:51:41,803 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 11:51:41,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:41,805 INFO L225 Difference]: With dead ends: 75 [2023-11-26 11:51:41,806 INFO L226 Difference]: Without dead ends: 70 [2023-11-26 11:51:41,806 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 11:51:41,808 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 11:51:41,809 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 11:51:41,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2023-11-26 11:51:41,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 62. [2023-11-26 11:51:41,822 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 11:51:41,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 77 transitions. [2023-11-26 11:51:41,825 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 77 transitions. Word has length 22 [2023-11-26 11:51:41,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:41,825 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 77 transitions. [2023-11-26 11:51:41,826 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 11:51:41,826 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 77 transitions. [2023-11-26 11:51:41,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-26 11:51:41,828 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:41,828 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 11:51:41,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 11:51:41,829 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-26 11:51:41,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:41,830 INFO L85 PathProgramCache]: Analyzing trace with hash -2108197165, now seen corresponding path program 1 times [2023-11-26 11:51:41,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:41,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589644199] [2023-11-26 11:51:41,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:41,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:41,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:41,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-26 11:51:41,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:41,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-26 11:51:41,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:41,973 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 11:51:41,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:41,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589644199] [2023-11-26 11:51:41,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589644199] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:51:41,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731800124] [2023-11-26 11:51:41,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:41,974 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:41,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:41,978 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:51:41,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:51:42,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:42,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:51:42,061 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:51:42,186 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 11:51:42,187 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:51:42,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731800124] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:42,193 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:51:42,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2023-11-26 11:51:42,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368919151] [2023-11-26 11:51:42,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:42,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:51:42,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:42,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:51:42,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:51:42,197 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 11:51:42,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:42,343 INFO L93 Difference]: Finished difference Result 110 states and 133 transitions. [2023-11-26 11:51:42,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:51:42,344 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 11:51:42,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:42,346 INFO L225 Difference]: With dead ends: 110 [2023-11-26 11:51:42,346 INFO L226 Difference]: Without dead ends: 60 [2023-11-26 11:51:42,348 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 11:51:42,358 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 11:51:42,359 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 11:51:42,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2023-11-26 11:51:42,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2023-11-26 11:51:42,376 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 11:51:42,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 70 transitions. [2023-11-26 11:51:42,388 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 70 transitions. Word has length 23 [2023-11-26 11:51:42,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:42,388 INFO L495 AbstractCegarLoop]: Abstraction has 58 states and 70 transitions. [2023-11-26 11:51:42,388 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 11:51:42,389 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 70 transitions. [2023-11-26 11:51:42,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-11-26 11:51:42,390 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:42,390 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 11:51:42,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:51:42,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-26 11:51:42,597 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-26 11:51:42,597 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:42,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1308693282, now seen corresponding path program 1 times [2023-11-26 11:51:42,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:42,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778728878] [2023-11-26 11:51:42,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:42,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:42,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:42,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-26 11:51:42,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:42,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2023-11-26 11:51:42,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:42,754 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 11:51:42,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:42,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778728878] [2023-11-26 11:51:42,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778728878] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:42,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:42,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:51:42,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790414510] [2023-11-26 11:51:42,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:42,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:51:42,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:42,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:51:42,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:51:42,756 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 11:51:42,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:42,807 INFO L93 Difference]: Finished difference Result 84 states and 107 transitions. [2023-11-26 11:51:42,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:51:42,808 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 11:51:42,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:42,809 INFO L225 Difference]: With dead ends: 84 [2023-11-26 11:51:42,809 INFO L226 Difference]: Without dead ends: 79 [2023-11-26 11:51:42,810 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 11:51:42,810 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 11:51:42,811 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 11:51:42,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-11-26 11:51:42,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 68. [2023-11-26 11:51:42,823 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 11:51:42,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 88 transitions. [2023-11-26 11:51:42,824 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 88 transitions. Word has length 24 [2023-11-26 11:51:42,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:42,824 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 88 transitions. [2023-11-26 11:51:42,825 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 11:51:42,825 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 88 transitions. [2023-11-26 11:51:42,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-11-26 11:51:42,826 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:42,826 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 11:51:42,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 11:51:42,827 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-26 11:51:42,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:42,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1559204346, now seen corresponding path program 1 times [2023-11-26 11:51:42,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:42,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980716824] [2023-11-26 11:51:42,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:42,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:42,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:42,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:51:42,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:42,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 11:51:42,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:42,915 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 11:51:42,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:42,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980716824] [2023-11-26 11:51:42,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980716824] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:42,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:42,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:51:42,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352546230] [2023-11-26 11:51:42,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:42,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:51:42,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:42,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:51:42,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:51:42,918 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 11:51:42,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:42,966 INFO L93 Difference]: Finished difference Result 84 states and 107 transitions. [2023-11-26 11:51:42,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:51:42,966 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 11:51:42,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:42,968 INFO L225 Difference]: With dead ends: 84 [2023-11-26 11:51:42,968 INFO L226 Difference]: Without dead ends: 82 [2023-11-26 11:51:42,968 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 11:51:42,969 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 11:51:42,969 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 11:51:42,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2023-11-26 11:51:42,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 77. [2023-11-26 11:51:42,993 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 11:51:42,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 100 transitions. [2023-11-26 11:51:42,998 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 100 transitions. Word has length 28 [2023-11-26 11:51:42,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:43,000 INFO L495 AbstractCegarLoop]: Abstraction has 77 states and 100 transitions. [2023-11-26 11:51:43,000 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 11:51:43,000 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 100 transitions. [2023-11-26 11:51:43,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2023-11-26 11:51:43,009 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:43,010 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 11:51:43,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 11:51:43,011 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-26 11:51:43,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:43,012 INFO L85 PathProgramCache]: Analyzing trace with hash -659915937, now seen corresponding path program 1 times [2023-11-26 11:51:43,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:43,012 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326198919] [2023-11-26 11:51:43,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:43,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:43,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:43,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-26 11:51:43,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:43,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-26 11:51:43,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:43,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-26 11:51:43,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:43,159 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 11:51:43,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:43,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326198919] [2023-11-26 11:51:43,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326198919] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:51:43,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [399852852] [2023-11-26 11:51:43,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:43,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:43,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:43,162 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:51:43,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:51:43,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:43,224 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:51:43,226 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:51:43,295 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 11:51:43,295 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:51:43,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [399852852] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:43,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:51:43,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2023-11-26 11:51:43,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503888016] [2023-11-26 11:51:43,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:43,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:51:43,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:43,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:51:43,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:51:43,298 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 11:51:43,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:43,417 INFO L93 Difference]: Finished difference Result 140 states and 179 transitions. [2023-11-26 11:51:43,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:51:43,418 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 11:51:43,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:43,419 INFO L225 Difference]: With dead ends: 140 [2023-11-26 11:51:43,419 INFO L226 Difference]: Without dead ends: 75 [2023-11-26 11:51:43,421 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 11:51:43,421 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 11:51:43,422 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 11:51:43,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2023-11-26 11:51:43,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 73. [2023-11-26 11:51:43,430 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 11:51:43,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 93 transitions. [2023-11-26 11:51:43,431 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 93 transitions. Word has length 38 [2023-11-26 11:51:43,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:43,432 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 93 transitions. [2023-11-26 11:51:43,432 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 11:51:43,432 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 93 transitions. [2023-11-26 11:51:43,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-26 11:51:43,433 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:43,434 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 11:51:43,445 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:51:43,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:43,640 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-26 11:51:43,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:43,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1102557063, now seen corresponding path program 1 times [2023-11-26 11:51:43,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:43,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113547222] [2023-11-26 11:51:43,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:43,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:43,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:43,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:51:43,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:43,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-26 11:51:43,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:43,765 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 11:51:43,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:43,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113547222] [2023-11-26 11:51:43,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113547222] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:51:43,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866976301] [2023-11-26 11:51:43,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:43,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:43,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:43,767 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:51:43,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:51:43,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:43,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:51:43,829 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:51:43,977 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 11:51:43,977 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:51:44,201 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 11:51:44,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866976301] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:51:44,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:51:44,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2023-11-26 11:51:44,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897163481] [2023-11-26 11:51:44,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:51:44,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-26 11:51:44,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:44,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-26 11:51:44,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2023-11-26 11:51:44,204 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 11:51:44,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:44,679 INFO L93 Difference]: Finished difference Result 184 states and 241 transitions. [2023-11-26 11:51:44,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 11:51:44,681 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 11:51:44,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:44,683 INFO L225 Difference]: With dead ends: 184 [2023-11-26 11:51:44,683 INFO L226 Difference]: Without dead ends: 119 [2023-11-26 11:51:44,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2023-11-26 11:51:44,689 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 133 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:51:44,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [137 Valid, 374 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 456 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:51:44,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-11-26 11:51:44,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 105. [2023-11-26 11:51:44,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 79 states have (on average 1.1645569620253164) internal successors, (92), 84 states have internal predecessors, (92), 14 states have call successors, (14), 5 states have call predecessors, (14), 8 states have return successors, (32), 15 states have call predecessors, (32), 13 states have call successors, (32) [2023-11-26 11:51:44,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 138 transitions. [2023-11-26 11:51:44,722 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 138 transitions. Word has length 29 [2023-11-26 11:51:44,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:44,725 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 138 transitions. [2023-11-26 11:51:44,725 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 11:51:44,725 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 138 transitions. [2023-11-26 11:51:44,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-26 11:51:44,727 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:44,727 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:44,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:51:44,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-26 11:51:44,933 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-26 11:51:44,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:44,934 INFO L85 PathProgramCache]: Analyzing trace with hash 756028316, now seen corresponding path program 1 times [2023-11-26 11:51:44,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:44,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801543512] [2023-11-26 11:51:44,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:44,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:44,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:45,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:51:45,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:45,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-26 11:51:45,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:45,031 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-26 11:51:45,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:45,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801543512] [2023-11-26 11:51:45,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801543512] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:45,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:45,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:51:45,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488636140] [2023-11-26 11:51:45,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:45,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:51:45,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:45,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:51:45,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:51:45,037 INFO L87 Difference]: Start difference. First operand 105 states and 138 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 11:51:45,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:45,079 INFO L93 Difference]: Finished difference Result 139 states and 188 transitions. [2023-11-26 11:51:45,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:51:45,080 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 30 [2023-11-26 11:51:45,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:45,082 INFO L225 Difference]: With dead ends: 139 [2023-11-26 11:51:45,082 INFO L226 Difference]: Without dead ends: 137 [2023-11-26 11:51:45,083 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 11:51:45,083 INFO L413 NwaCegarLoop]: 36 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, 108 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 11:51:45,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 108 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:51:45,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2023-11-26 11:51:45,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 123. [2023-11-26 11:51:45,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 94 states have (on average 1.1382978723404256) internal successors, (107), 97 states have internal predecessors, (107), 17 states have call successors, (17), 5 states have call predecessors, (17), 8 states have return successors, (40), 20 states have call predecessors, (40), 16 states have call successors, (40) [2023-11-26 11:51:45,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 164 transitions. [2023-11-26 11:51:45,099 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 164 transitions. Word has length 30 [2023-11-26 11:51:45,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:45,099 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 164 transitions. [2023-11-26 11:51:45,099 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 11:51:45,100 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 164 transitions. [2023-11-26 11:51:45,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-26 11:51:45,101 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:45,101 INFO L195 NwaCegarLoop]: trace histogram [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 11:51:45,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-26 11:51:45,102 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-26 11:51:45,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:45,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1810435055, now seen corresponding path program 1 times [2023-11-26 11:51:45,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:45,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266881383] [2023-11-26 11:51:45,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:45,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:45,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:45,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:51:45,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:45,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 11:51:45,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:45,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-26 11:51:45,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:45,194 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-26 11:51:45,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:45,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266881383] [2023-11-26 11:51:45,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266881383] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:51:45,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536350115] [2023-11-26 11:51:45,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:45,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:45,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:45,196 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:51:45,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:51:45,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:45,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:51:45,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:51:45,379 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 14 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:51:45,380 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:51:45,527 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:51:45,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536350115] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:51:45,527 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:51:45,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 14 [2023-11-26 11:51:45,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967493100] [2023-11-26 11:51:45,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:51:45,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-26 11:51:45,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:45,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-26 11:51:45,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2023-11-26 11:51:45,533 INFO L87 Difference]: Start difference. First operand 123 states and 164 transitions. Second operand has 14 states, 13 states have (on average 4.923076923076923) internal successors, (64), 12 states have internal predecessors, (64), 6 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 11:51:45,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:45,906 INFO L93 Difference]: Finished difference Result 236 states and 310 transitions. [2023-11-26 11:51:45,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-26 11:51:45,907 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.923076923076923) internal successors, (64), 12 states have internal predecessors, (64), 6 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 44 [2023-11-26 11:51:45,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:45,908 INFO L225 Difference]: With dead ends: 236 [2023-11-26 11:51:45,909 INFO L226 Difference]: Without dead ends: 131 [2023-11-26 11:51:45,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 82 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2023-11-26 11:51:45,911 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 89 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:51:45,911 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 354 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:51:45,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2023-11-26 11:51:45,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 116. [2023-11-26 11:51:45,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 88 states have (on average 1.1477272727272727) internal successors, (101), 92 states have internal predecessors, (101), 16 states have call successors, (16), 5 states have call predecessors, (16), 8 states have return successors, (37), 18 states have call predecessors, (37), 15 states have call successors, (37) [2023-11-26 11:51:45,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 154 transitions. [2023-11-26 11:51:45,927 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 154 transitions. Word has length 44 [2023-11-26 11:51:45,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:45,930 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 154 transitions. [2023-11-26 11:51:45,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.923076923076923) internal successors, (64), 12 states have internal predecessors, (64), 6 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 11:51:45,930 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 154 transitions. [2023-11-26 11:51:45,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-26 11:51:45,931 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:45,931 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:45,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 11:51:46,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-26 11:51:46,137 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-26 11:51:46,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:46,138 INFO L85 PathProgramCache]: Analyzing trace with hash 805610903, now seen corresponding path program 1 times [2023-11-26 11:51:46,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:46,138 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300265454] [2023-11-26 11:51:46,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:46,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:46,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:46,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-26 11:51:46,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:46,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 11:51:46,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:46,231 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-26 11:51:46,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:46,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300265454] [2023-11-26 11:51:46,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300265454] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:51:46,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849115965] [2023-11-26 11:51:46,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:46,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:46,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:46,234 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:51:46,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 11:51:46,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:46,299 INFO L262 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 11:51:46,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:51:46,345 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-26 11:51:46,345 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:51:46,413 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-26 11:51:46,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849115965] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:51:46,413 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:51:46,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 11 [2023-11-26 11:51:46,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059886464] [2023-11-26 11:51:46,414 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:51:46,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-26 11:51:46,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:46,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-26 11:51:46,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:51:46,417 INFO L87 Difference]: Start difference. First operand 116 states and 154 transitions. Second operand has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 12 states have internal predecessors, (36), 4 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-26 11:51:46,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:46,523 INFO L93 Difference]: Finished difference Result 132 states and 172 transitions. [2023-11-26 11:51:46,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 11:51:46,524 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 12 states have internal predecessors, (36), 4 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) Word has length 35 [2023-11-26 11:51:46,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:46,528 INFO L225 Difference]: With dead ends: 132 [2023-11-26 11:51:46,529 INFO L226 Difference]: Without dead ends: 130 [2023-11-26 11:51:46,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2023-11-26 11:51:46,531 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 14 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:51:46,532 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 275 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:51:46,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-11-26 11:51:46,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 112. [2023-11-26 11:51:46,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 86 states have (on average 1.1511627906976745) internal successors, (99), 88 states have internal predecessors, (99), 15 states have call successors, (15), 5 states have call predecessors, (15), 7 states have return successors, (31), 18 states have call predecessors, (31), 14 states have call successors, (31) [2023-11-26 11:51:46,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 145 transitions. [2023-11-26 11:51:46,552 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 145 transitions. Word has length 35 [2023-11-26 11:51:46,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:46,552 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 145 transitions. [2023-11-26 11:51:46,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.272727272727273) internal successors, (36), 12 states have internal predecessors, (36), 4 states have call successors, (6), 1 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2023-11-26 11:51:46,553 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 145 transitions. [2023-11-26 11:51:46,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-26 11:51:46,554 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:46,554 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:46,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 11:51:46,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-26 11:51:46,764 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-26 11:51:46,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:46,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1887891836, now seen corresponding path program 1 times [2023-11-26 11:51:46,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:46,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537954279] [2023-11-26 11:51:46,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:46,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:46,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:46,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-26 11:51:46,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:46,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:51:46,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:46,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-26 11:51:46,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:46,861 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-26 11:51:46,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:46,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537954279] [2023-11-26 11:51:46,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537954279] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:51:46,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1058524621] [2023-11-26 11:51:46,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:46,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:46,863 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:46,864 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:51:46,891 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 11:51:46,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:46,925 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 11:51:46,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:51:47,076 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:51:47,077 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:51:47,229 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:51:47,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1058524621] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:51:47,229 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:51:47,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 11, 11] total 16 [2023-11-26 11:51:47,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456792408] [2023-11-26 11:51:47,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:51:47,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-26 11:51:47,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:47,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-26 11:51:47,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2023-11-26 11:51:47,232 INFO L87 Difference]: Start difference. First operand 112 states and 145 transitions. Second operand has 16 states, 15 states have (on average 4.466666666666667) internal successors, (67), 13 states have internal predecessors, (67), 7 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 11:51:47,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:47,622 INFO L93 Difference]: Finished difference Result 259 states and 339 transitions. [2023-11-26 11:51:47,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-26 11:51:47,623 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.466666666666667) internal successors, (67), 13 states have internal predecessors, (67), 7 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 49 [2023-11-26 11:51:47,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:47,626 INFO L225 Difference]: With dead ends: 259 [2023-11-26 11:51:47,626 INFO L226 Difference]: Without dead ends: 161 [2023-11-26 11:51:47,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 88 SyntacticMatches, 8 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2023-11-26 11:51:47,628 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 107 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:51:47,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 421 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:51:47,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2023-11-26 11:51:47,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 134. [2023-11-26 11:51:47,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 104 states have (on average 1.1442307692307692) internal successors, (119), 105 states have internal predecessors, (119), 17 states have call successors, (17), 6 states have call predecessors, (17), 9 states have return successors, (39), 22 states have call predecessors, (39), 16 states have call successors, (39) [2023-11-26 11:51:47,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 175 transitions. [2023-11-26 11:51:47,646 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 175 transitions. Word has length 49 [2023-11-26 11:51:47,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:47,646 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 175 transitions. [2023-11-26 11:51:47,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.466666666666667) internal successors, (67), 13 states have internal predecessors, (67), 7 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 11:51:47,647 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 175 transitions. [2023-11-26 11:51:47,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-26 11:51:47,649 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:47,649 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:47,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 11:51:47,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-26 11:51:47,855 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-26 11:51:47,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:47,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1150482461, now seen corresponding path program 1 times [2023-11-26 11:51:47,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:47,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657777013] [2023-11-26 11:51:47,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:47,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:47,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:47,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-26 11:51:47,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:47,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 11:51:48,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:48,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:48,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:48,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:51:48,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:48,101 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 22 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 11:51:48,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:48,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657777013] [2023-11-26 11:51:48,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657777013] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:51:48,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972002804] [2023-11-26 11:51:48,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:48,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:48,102 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:48,103 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:51:48,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 11:51:48,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:48,164 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 11:51:48,168 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:51:48,263 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 19 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 11:51:48,264 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:51:48,424 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 10 proven. 19 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 11:51:48,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972002804] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:51:48,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:51:48,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 16 [2023-11-26 11:51:48,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867717255] [2023-11-26 11:51:48,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:51:48,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-11-26 11:51:48,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:48,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-11-26 11:51:48,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2023-11-26 11:51:48,427 INFO L87 Difference]: Start difference. First operand 134 states and 175 transitions. Second operand has 16 states, 15 states have (on average 3.933333333333333) internal successors, (59), 13 states have internal predecessors, (59), 7 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-26 11:51:48,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:48,704 INFO L93 Difference]: Finished difference Result 226 states and 305 transitions. [2023-11-26 11:51:48,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 11:51:48,705 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.933333333333333) internal successors, (59), 13 states have internal predecessors, (59), 7 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 56 [2023-11-26 11:51:48,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:48,706 INFO L225 Difference]: With dead ends: 226 [2023-11-26 11:51:48,707 INFO L226 Difference]: Without dead ends: 111 [2023-11-26 11:51:48,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 113 SyntacticMatches, 8 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=377, Unknown=0, NotChecked=0, Total=462 [2023-11-26 11:51:48,710 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 131 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:51:48,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 185 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:51:48,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-11-26 11:51:48,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2023-11-26 11:51:48,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 84 states have (on average 1.119047619047619) internal successors, (94), 89 states have internal predecessors, (94), 15 states have call successors, (15), 6 states have call predecessors, (15), 8 states have return successors, (24), 15 states have call predecessors, (24), 14 states have call successors, (24) [2023-11-26 11:51:48,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 133 transitions. [2023-11-26 11:51:48,726 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 133 transitions. Word has length 56 [2023-11-26 11:51:48,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:48,727 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 133 transitions. [2023-11-26 11:51:48,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.933333333333333) internal successors, (59), 13 states have internal predecessors, (59), 7 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-26 11:51:48,727 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 133 transitions. [2023-11-26 11:51:48,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-26 11:51:48,728 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:48,728 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:48,739 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 11:51:48,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-26 11:51:48,935 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-26 11:51:48,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:48,939 INFO L85 PathProgramCache]: Analyzing trace with hash 137442814, now seen corresponding path program 1 times [2023-11-26 11:51:48,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:48,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863833128] [2023-11-26 11:51:48,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:48,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:48,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:48,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:51:48,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:48,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:48,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:48,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:51:48,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:48,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-26 11:51:49,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:49,011 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2023-11-26 11:51:49,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:49,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863833128] [2023-11-26 11:51:49,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863833128] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:49,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:49,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 11:51:49,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339357968] [2023-11-26 11:51:49,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:49,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:51:49,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:49,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:51:49,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:51:49,014 INFO L87 Difference]: Start difference. First operand 111 states and 133 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 11:51:49,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:49,043 INFO L93 Difference]: Finished difference Result 125 states and 150 transitions. [2023-11-26 11:51:49,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:51:49,044 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 49 [2023-11-26 11:51:49,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:49,045 INFO L225 Difference]: With dead ends: 125 [2023-11-26 11:51:49,045 INFO L226 Difference]: Without dead ends: 124 [2023-11-26 11:51:49,045 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 11:51:49,046 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 6 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:51:49,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 135 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:51:49,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2023-11-26 11:51:49,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 117. [2023-11-26 11:51:49,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 90 states have (on average 1.1111111111111112) internal successors, (100), 92 states have internal predecessors, (100), 15 states have call successors, (15), 6 states have call predecessors, (15), 8 states have return successors, (24), 18 states have call predecessors, (24), 14 states have call successors, (24) [2023-11-26 11:51:49,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 139 transitions. [2023-11-26 11:51:49,056 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 139 transitions. Word has length 49 [2023-11-26 11:51:49,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:49,057 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 139 transitions. [2023-11-26 11:51:49,057 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 11:51:49,057 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 139 transitions. [2023-11-26 11:51:49,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-26 11:51:49,058 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:49,058 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:49,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-26 11:51:49,059 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-26 11:51:49,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:49,059 INFO L85 PathProgramCache]: Analyzing trace with hash -34239989, now seen corresponding path program 1 times [2023-11-26 11:51:49,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:49,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164866675] [2023-11-26 11:51:49,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:49,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:49,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:49,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:51:49,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:49,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:49,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:49,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:51:49,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:49,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-26 11:51:49,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:49,211 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-11-26 11:51:49,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:49,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164866675] [2023-11-26 11:51:49,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164866675] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:51:49,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:51:49,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-26 11:51:49,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383815113] [2023-11-26 11:51:49,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:51:49,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 11:51:49,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:49,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 11:51:49,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:51:49,214 INFO L87 Difference]: Start difference. First operand 117 states and 139 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 11:51:49,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:49,289 INFO L93 Difference]: Finished difference Result 124 states and 147 transitions. [2023-11-26 11:51:49,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-26 11:51:49,290 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 50 [2023-11-26 11:51:49,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:49,291 INFO L225 Difference]: With dead ends: 124 [2023-11-26 11:51:49,291 INFO L226 Difference]: Without dead ends: 120 [2023-11-26 11:51:49,291 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 11:51:49,292 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 6 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:51:49,293 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 216 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:51:49,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-11-26 11:51:49,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 114. [2023-11-26 11:51:49,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 87 states have (on average 1.1149425287356323) internal successors, (97), 91 states have internal predecessors, (97), 15 states have call successors, (15), 6 states have call predecessors, (15), 8 states have return successors, (23), 16 states have call predecessors, (23), 14 states have call successors, (23) [2023-11-26 11:51:49,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 135 transitions. [2023-11-26 11:51:49,302 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 135 transitions. Word has length 50 [2023-11-26 11:51:49,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:49,303 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 135 transitions. [2023-11-26 11:51:49,303 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 11:51:49,303 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 135 transitions. [2023-11-26 11:51:49,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-26 11:51:49,304 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:49,305 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:49,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-26 11:51:49,305 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-26 11:51:49,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:49,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1082608501, now seen corresponding path program 2 times [2023-11-26 11:51:49,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:49,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152289566] [2023-11-26 11:51:49,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:49,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:49,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:49,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-26 11:51:49,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:49,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-26 11:51:49,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:49,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-26 11:51:49,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:49,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:49,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:49,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:51:49,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:49,413 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-11-26 11:51:49,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:49,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152289566] [2023-11-26 11:51:49,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152289566] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:51:49,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590410607] [2023-11-26 11:51:49,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:51:49,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:49,415 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:49,416 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:51:49,450 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 11:51:49,486 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 11:51:49,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:51:49,487 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-26 11:51:49,492 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:51:49,612 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 53 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-26 11:51:49,612 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:51:49,738 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 15 proven. 33 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-26 11:51:49,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590410607] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:51:49,739 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:51:49,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 11, 11] total 14 [2023-11-26 11:51:49,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363484619] [2023-11-26 11:51:49,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:51:49,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-26 11:51:49,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:49,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-26 11:51:49,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-11-26 11:51:49,741 INFO L87 Difference]: Start difference. First operand 114 states and 135 transitions. Second operand has 14 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 10 states have internal predecessors, (74), 7 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2023-11-26 11:51:50,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:50,013 INFO L93 Difference]: Finished difference Result 171 states and 200 transitions. [2023-11-26 11:51:50,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-26 11:51:50,014 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 10 states have internal predecessors, (74), 7 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) Word has length 69 [2023-11-26 11:51:50,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:50,015 INFO L225 Difference]: With dead ends: 171 [2023-11-26 11:51:50,015 INFO L226 Difference]: Without dead ends: 129 [2023-11-26 11:51:50,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 132 SyntacticMatches, 9 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2023-11-26 11:51:50,017 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 95 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:51:50,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 169 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:51:50,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2023-11-26 11:51:50,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 122. [2023-11-26 11:51:50,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 94 states have (on average 1.1063829787234043) internal successors, (104), 96 states have internal predecessors, (104), 15 states have call successors, (15), 7 states have call predecessors, (15), 9 states have return successors, (23), 18 states have call predecessors, (23), 14 states have call successors, (23) [2023-11-26 11:51:50,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 142 transitions. [2023-11-26 11:51:50,028 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 142 transitions. Word has length 69 [2023-11-26 11:51:50,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:50,029 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 142 transitions. [2023-11-26 11:51:50,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 5.6923076923076925) internal successors, (74), 10 states have internal predecessors, (74), 7 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (11), 4 states have call predecessors, (11), 4 states have call successors, (11) [2023-11-26 11:51:50,029 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 142 transitions. [2023-11-26 11:51:50,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-26 11:51:50,030 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:50,031 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:50,036 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-26 11:51:50,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-26 11:51:50,236 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-26 11:51:50,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:50,237 INFO L85 PathProgramCache]: Analyzing trace with hash -1133498424, now seen corresponding path program 1 times [2023-11-26 11:51:50,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:50,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817443591] [2023-11-26 11:51:50,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:50,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:50,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:50,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 11:51:50,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:50,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-26 11:51:50,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:50,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:50,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:50,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:51:50,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:50,380 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 12 proven. 26 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-26 11:51:50,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:50,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817443591] [2023-11-26 11:51:50,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817443591] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:51:50,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616201395] [2023-11-26 11:51:50,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:50,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:50,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:50,383 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:51:50,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-26 11:51:50,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:50,443 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-26 11:51:50,445 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:51:50,511 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 37 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:51:50,511 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:51:50,672 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 12 proven. 30 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 11:51:50,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616201395] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:51:50,673 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:51:50,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 13, 13] total 15 [2023-11-26 11:51:50,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545363535] [2023-11-26 11:51:50,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:51:50,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-26 11:51:50,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:50,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-26 11:51:50,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2023-11-26 11:51:50,675 INFO L87 Difference]: Start difference. First operand 122 states and 142 transitions. Second operand has 15 states, 14 states have (on average 4.857142857142857) internal successors, (68), 11 states have internal predecessors, (68), 7 states have call successors, (12), 6 states have call predecessors, (12), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-26 11:51:50,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:50,916 INFO L93 Difference]: Finished difference Result 154 states and 173 transitions. [2023-11-26 11:51:50,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 11:51:50,917 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.857142857142857) internal successors, (68), 11 states have internal predecessors, (68), 7 states have call successors, (12), 6 states have call predecessors, (12), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 61 [2023-11-26 11:51:50,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:50,918 INFO L225 Difference]: With dead ends: 154 [2023-11-26 11:51:50,918 INFO L226 Difference]: Without dead ends: 106 [2023-11-26 11:51:50,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 121 SyntacticMatches, 10 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2023-11-26 11:51:50,920 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 142 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:51:50,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 138 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:51:50,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-11-26 11:51:50,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2023-11-26 11:51:50,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 81 states have (on average 1.0987654320987654) internal successors, (89), 84 states have internal predecessors, (89), 12 states have call successors, (12), 7 states have call predecessors, (12), 9 states have return successors, (18), 14 states have call predecessors, (18), 11 states have call successors, (18) [2023-11-26 11:51:50,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 119 transitions. [2023-11-26 11:51:50,930 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 119 transitions. Word has length 61 [2023-11-26 11:51:50,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:50,931 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 119 transitions. [2023-11-26 11:51:50,931 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.857142857142857) internal successors, (68), 11 states have internal predecessors, (68), 7 states have call successors, (12), 6 states have call predecessors, (12), 3 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-26 11:51:50,931 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 119 transitions. [2023-11-26 11:51:50,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-26 11:51:50,932 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:50,933 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:50,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-26 11:51:51,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:51,144 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-26 11:51:51,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:51,144 INFO L85 PathProgramCache]: Analyzing trace with hash 118598073, now seen corresponding path program 1 times [2023-11-26 11:51:51,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:51,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154726303] [2023-11-26 11:51:51,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:51,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:51,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:51,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:51:51,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:51,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:51,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:51,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:51:51,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:51,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-26 11:51:51,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:51,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:51,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:51,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-26 11:51:51,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:51,347 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 14 proven. 21 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-11-26 11:51:51,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:51,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154726303] [2023-11-26 11:51:51,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154726303] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:51:51,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715006044] [2023-11-26 11:51:51,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:51,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:51,349 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:51,350 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:51:51,354 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-26 11:51:51,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:51,408 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:51:51,410 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:51:51,574 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-26 11:51:51,574 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:51:51,834 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2023-11-26 11:51:51,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [715006044] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:51:51,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:51:51,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 7] total 23 [2023-11-26 11:51:51,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684080580] [2023-11-26 11:51:51,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:51:51,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-26 11:51:51,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:51,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-26 11:51:51,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2023-11-26 11:51:51,837 INFO L87 Difference]: Start difference. First operand 106 states and 119 transitions. Second operand has 23 states, 22 states have (on average 3.5454545454545454) internal successors, (78), 21 states have internal predecessors, (78), 9 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (14), 11 states have call predecessors, (14), 7 states have call successors, (14) [2023-11-26 11:51:52,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:52,485 INFO L93 Difference]: Finished difference Result 190 states and 221 transitions. [2023-11-26 11:51:52,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-26 11:51:52,485 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.5454545454545454) internal successors, (78), 21 states have internal predecessors, (78), 9 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (14), 11 states have call predecessors, (14), 7 states have call successors, (14) Word has length 67 [2023-11-26 11:51:52,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:52,487 INFO L225 Difference]: With dead ends: 190 [2023-11-26 11:51:52,487 INFO L226 Difference]: Without dead ends: 120 [2023-11-26 11:51:52,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 134 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=250, Invalid=1472, Unknown=0, NotChecked=0, Total=1722 [2023-11-26 11:51:52,489 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 119 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 155 SdHoareTripleChecker+Invalid, 551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:51:52,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 155 Invalid, 551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:51:52,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-11-26 11:51:52,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 100. [2023-11-26 11:51:52,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 76 states have (on average 1.0657894736842106) internal successors, (81), 80 states have internal predecessors, (81), 12 states have call successors, (12), 7 states have call predecessors, (12), 9 states have return successors, (15), 12 states have call predecessors, (15), 11 states have call successors, (15) [2023-11-26 11:51:52,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 108 transitions. [2023-11-26 11:51:52,500 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 108 transitions. Word has length 67 [2023-11-26 11:51:52,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:52,500 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 108 transitions. [2023-11-26 11:51:52,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.5454545454545454) internal successors, (78), 21 states have internal predecessors, (78), 9 states have call successors, (14), 3 states have call predecessors, (14), 6 states have return successors, (14), 11 states have call predecessors, (14), 7 states have call successors, (14) [2023-11-26 11:51:52,501 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 108 transitions. [2023-11-26 11:51:52,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-11-26 11:51:52,507 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:52,507 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:52,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-26 11:51:52,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:52,714 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-26 11:51:52,714 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:52,714 INFO L85 PathProgramCache]: Analyzing trace with hash -538545639, now seen corresponding path program 1 times [2023-11-26 11:51:52,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:52,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596911527] [2023-11-26 11:51:52,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:52,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:52,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:52,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-26 11:51:52,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:52,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:52,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:52,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:52,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:52,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:51:53,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:53,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:51:53,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:53,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-26 11:51:53,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:53,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:53,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:53,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:51:53,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:53,086 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-11-26 11:51:53,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:53,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596911527] [2023-11-26 11:51:53,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596911527] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:51:53,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608225562] [2023-11-26 11:51:53,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:53,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:53,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:53,092 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:51:53,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-26 11:51:53,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:53,157 INFO L262 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-26 11:51:53,159 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:51:53,320 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 8 proven. 19 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-11-26 11:51:53,320 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:51:53,972 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 16 proven. 19 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-11-26 11:51:53,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608225562] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:51:53,973 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:51:53,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 15] total 28 [2023-11-26 11:51:53,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978334095] [2023-11-26 11:51:53,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:51:53,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-26 11:51:53,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:53,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-26 11:51:53,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=699, Unknown=0, NotChecked=0, Total=812 [2023-11-26 11:51:53,976 INFO L87 Difference]: Start difference. First operand 100 states and 108 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 11:51:54,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:54,280 INFO L93 Difference]: Finished difference Result 136 states and 148 transitions. [2023-11-26 11:51:54,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-11-26 11:51:54,281 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 82 [2023-11-26 11:51:54,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:54,282 INFO L225 Difference]: With dead ends: 136 [2023-11-26 11:51:54,282 INFO L226 Difference]: Without dead ends: 135 [2023-11-26 11:51:54,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 163 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 379 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=207, Invalid=1199, Unknown=0, NotChecked=0, Total=1406 [2023-11-26 11:51:54,284 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 16 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:51:54,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 377 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:51:54,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2023-11-26 11:51:54,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 99. [2023-11-26 11:51:54,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 76 states have (on average 1.0526315789473684) internal successors, (80), 79 states have internal predecessors, (80), 12 states have call successors, (12), 7 states have call predecessors, (12), 9 states have return successors, (15), 12 states have call predecessors, (15), 11 states have call successors, (15) [2023-11-26 11:51:54,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 107 transitions. [2023-11-26 11:51:54,295 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 107 transitions. Word has length 82 [2023-11-26 11:51:54,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:54,296 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 107 transitions. [2023-11-26 11:51:54,296 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 11:51:54,296 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 107 transitions. [2023-11-26 11:51:54,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-26 11:51:54,298 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:51:54,298 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:54,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-26 11:51:54,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-26 11:51:54,510 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2023-11-26 11:51:54,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:51:54,511 INFO L85 PathProgramCache]: Analyzing trace with hash 484954474, now seen corresponding path program 1 times [2023-11-26 11:51:54,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:51:54,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599379018] [2023-11-26 11:51:54,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:54,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:51:54,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:54,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-26 11:51:54,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:54,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:54,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:54,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:54,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:54,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:51:54,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:54,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:51:54,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:54,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-26 11:51:54,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:54,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-26 11:51:54,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:54,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:51:54,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:54,867 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-11-26 11:51:54,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:51:54,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599379018] [2023-11-26 11:51:54,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599379018] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:51:54,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532734323] [2023-11-26 11:51:54,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:51:54,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:54,869 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:51:54,870 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:51:54,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-26 11:51:54,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:51:54,945 INFO L262 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-26 11:51:54,947 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:51:55,101 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2023-11-26 11:51:55,102 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:51:55,717 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 23 proven. 13 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-11-26 11:51:55,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532734323] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:51:55,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:51:55,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 16] total 26 [2023-11-26 11:51:55,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863626704] [2023-11-26 11:51:55,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:51:55,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-26 11:51:55,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:51:55,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-26 11:51:55,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=597, Unknown=0, NotChecked=0, Total=702 [2023-11-26 11:51:55,721 INFO L87 Difference]: Start difference. First operand 99 states and 107 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 11:51:55,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:51:55,851 INFO L93 Difference]: Finished difference Result 107 states and 115 transitions. [2023-11-26 11:51:55,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-26 11:51:55,854 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 83 [2023-11-26 11:51:55,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:51:55,854 INFO L225 Difference]: With dead ends: 107 [2023-11-26 11:51:55,854 INFO L226 Difference]: Without dead ends: 0 [2023-11-26 11:51:55,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 165 SyntacticMatches, 7 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2023-11-26 11:51:55,856 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 2 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:51:55,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 432 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:51:55,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2023-11-26 11:51:55,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2023-11-26 11:51:55,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:51:55,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2023-11-26 11:51:55,857 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 83 [2023-11-26 11:51:55,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:51:55,857 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2023-11-26 11:51:55,857 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 11:51:55,857 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2023-11-26 11:51:55,858 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2023-11-26 11:51:55,862 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 12 remaining) [2023-11-26 11:51:55,863 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2023-11-26 11:51:55,863 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2023-11-26 11:51:55,863 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2023-11-26 11:51:55,864 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining) [2023-11-26 11:51:55,864 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 12 remaining) [2023-11-26 11:51:55,864 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 12 remaining) [2023-11-26 11:51:55,864 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 12 remaining) [2023-11-26 11:51:55,864 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2023-11-26 11:51:55,865 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2023-11-26 11:51:55,865 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2023-11-26 11:51:55,865 INFO L805 garLoopResultBuilder]: Registering result SAFE for location fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2023-11-26 11:51:55,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-26 11:51:56,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:51:56,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2023-11-26 11:51:56,470 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2023-11-26 11:51:56,470 INFO L899 garLoopResultBuilder]: For program point $Ultimate##0(line -1) no Hoare annotation was computed. [2023-11-26 11:51:56,470 INFO L899 garLoopResultBuilder]: For program point L40(lines 40 42) no Hoare annotation was computed. [2023-11-26 11:51:56,470 INFO L895 garLoopResultBuilder]: At program point L39(line 39) the Hoare annotation is: (= |ULTIMATE.start_main_~x~0#1| 4) [2023-11-26 11:51:56,471 INFO L899 garLoopResultBuilder]: For program point L39-1(line 39) no Hoare annotation was computed. [2023-11-26 11:51:56,471 INFO L899 garLoopResultBuilder]: For program point L40-2(lines 40 42) no Hoare annotation was computed. [2023-11-26 11:51:56,471 INFO L899 garLoopResultBuilder]: For program point fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2023-11-26 11:51:56,471 INFO L899 garLoopResultBuilder]: For program point L25(line 25) no Hoare annotation was computed. [2023-11-26 11:51:56,471 INFO L899 garLoopResultBuilder]: For program point fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2023-11-26 11:51:56,471 INFO L899 garLoopResultBuilder]: For program point L25-1(line 25) no Hoare annotation was computed. [2023-11-26 11:51:56,471 INFO L895 garLoopResultBuilder]: At program point L25-2(line 25) the Hoare annotation is: (and (or (= fibo2_~n |fibo2_#in~n|) (< 3 |fibo2_#in~n|)) (< 1 |fibo2_#in~n|)) [2023-11-26 11:51:56,471 INFO L899 garLoopResultBuilder]: For program point L25-3(line 25) no Hoare annotation was computed. [2023-11-26 11:51:56,472 INFO L899 garLoopResultBuilder]: For program point L25-4(line 25) no Hoare annotation was computed. [2023-11-26 11:51:56,472 INFO L899 garLoopResultBuilder]: For program point L25-5(line 25) no Hoare annotation was computed. [2023-11-26 11:51:56,472 INFO L895 garLoopResultBuilder]: At program point L25-6(line 25) the Hoare annotation is: (let ((.cse0 (< 3 |fibo2_#in~n|))) (and (or (< |fibo2_#in~n| 3) (= |fibo2_#t~ret6| 1) .cse0) (< 1 |fibo2_#in~n|) (or (and (= fibo2_~n |fibo2_#in~n|) (<= 0 |fibo2_#t~ret6|) (<= |fibo2_#t~ret6| 1)) .cse0))) [2023-11-26 11:51:56,472 INFO L899 garLoopResultBuilder]: For program point L25-7(line 25) no Hoare annotation was computed. [2023-11-26 11:51:56,472 INFO L899 garLoopResultBuilder]: For program point L25-8(line 25) no Hoare annotation was computed. [2023-11-26 11:51:56,472 INFO L899 garLoopResultBuilder]: For program point L25-9(line 25) no Hoare annotation was computed. [2023-11-26 11:51:56,472 INFO L899 garLoopResultBuilder]: For program point fibo2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2023-11-26 11:51:56,472 INFO L899 garLoopResultBuilder]: For program point fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2023-11-26 11:51:56,472 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 19 27) the Hoare annotation is: true [2023-11-26 11:51:56,473 INFO L899 garLoopResultBuilder]: For program point fibo2EXIT(lines 19 27) no Hoare annotation was computed. [2023-11-26 11:51:56,473 INFO L899 garLoopResultBuilder]: For program point fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2023-11-26 11:51:56,473 INFO L899 garLoopResultBuilder]: For program point L22(lines 22 26) no Hoare annotation was computed. [2023-11-26 11:51:56,473 INFO L899 garLoopResultBuilder]: For program point L20(lines 20 26) no Hoare annotation was computed. [2023-11-26 11:51:56,473 INFO L899 garLoopResultBuilder]: For program point fibo2FINAL(lines 19 27) no Hoare annotation was computed. [2023-11-26 11:51:56,473 INFO L899 garLoopResultBuilder]: For program point fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 25) no Hoare annotation was computed. [2023-11-26 11:51:56,473 INFO L899 garLoopResultBuilder]: For program point fibo1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2023-11-26 11:51:56,473 INFO L899 garLoopResultBuilder]: For program point fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2023-11-26 11:51:56,473 INFO L899 garLoopResultBuilder]: For program point L15(line 15) no Hoare annotation was computed. [2023-11-26 11:51:56,473 INFO L899 garLoopResultBuilder]: For program point L15-1(line 15) no Hoare annotation was computed. [2023-11-26 11:51:56,474 INFO L895 garLoopResultBuilder]: At program point L15-2(line 15) the Hoare annotation is: (and (or (< |fibo1_#in~n| 4) (< 4 |fibo1_#in~n|) (= fibo1_~n 4)) (or (and (= fibo1_~n 2) (= fibo1_~n |fibo1_#in~n|)) (< 2 |fibo1_#in~n|))) [2023-11-26 11:51:56,474 INFO L899 garLoopResultBuilder]: For program point L15-3(line 15) no Hoare annotation was computed. [2023-11-26 11:51:56,474 INFO L899 garLoopResultBuilder]: For program point L15-4(line 15) no Hoare annotation was computed. [2023-11-26 11:51:56,474 INFO L899 garLoopResultBuilder]: For program point fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2023-11-26 11:51:56,474 INFO L899 garLoopResultBuilder]: For program point fibo1FINAL(lines 9 17) no Hoare annotation was computed. [2023-11-26 11:51:56,474 INFO L899 garLoopResultBuilder]: For program point L15-5(line 15) no Hoare annotation was computed. [2023-11-26 11:51:56,474 INFO L902 garLoopResultBuilder]: At program point $Ultimate##0(lines 9 17) the Hoare annotation is: true [2023-11-26 11:51:56,474 INFO L895 garLoopResultBuilder]: At program point L15-6(line 15) the Hoare annotation is: (let ((.cse0 (< 2 |fibo1_#in~n|))) (and (or (= |fibo1_#t~ret4| 1) .cse0) (or (< |fibo1_#in~n| 4) (< 4 |fibo1_#in~n|) (and (= 2 |fibo1_#t~ret4|) (= fibo1_~n 4))) (or .cse0 (and (= 2 |fibo1_#in~n|) (= fibo1_~n 2))))) [2023-11-26 11:51:56,475 INFO L899 garLoopResultBuilder]: For program point L15-7(line 15) no Hoare annotation was computed. [2023-11-26 11:51:56,475 INFO L899 garLoopResultBuilder]: For program point L15-8(line 15) no Hoare annotation was computed. [2023-11-26 11:51:56,475 INFO L899 garLoopResultBuilder]: For program point L15-9(line 15) no Hoare annotation was computed. [2023-11-26 11:51:56,475 INFO L899 garLoopResultBuilder]: For program point fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2023-11-26 11:51:56,475 INFO L899 garLoopResultBuilder]: For program point fibo1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2023-11-26 11:51:56,475 INFO L899 garLoopResultBuilder]: For program point fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2023-11-26 11:51:56,475 INFO L899 garLoopResultBuilder]: For program point L12(lines 12 16) no Hoare annotation was computed. [2023-11-26 11:51:56,475 INFO L899 garLoopResultBuilder]: For program point L10(lines 10 16) no Hoare annotation was computed. [2023-11-26 11:51:56,475 INFO L899 garLoopResultBuilder]: For program point fibo1EXIT(lines 9 17) no Hoare annotation was computed. [2023-11-26 11:51:56,478 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:51:56,482 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 11:51:56,486 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 11:51:56 BoogieIcfgContainer [2023-11-26 11:51:56,487 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 11:51:56,487 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 11:51:56,487 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 11:51:56,488 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 11:51:56,488 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:51:40" (3/4) ... [2023-11-26 11:51:56,490 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-26 11:51:56,494 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo2 [2023-11-26 11:51:56,494 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo1 [2023-11-26 11:51:56,499 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2023-11-26 11:51:56,500 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2023-11-26 11:51:56,500 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-26 11:51:56,500 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-26 11:51:56,596 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/witness.graphml [2023-11-26 11:51:56,597 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/witness.yml [2023-11-26 11:51:56,597 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 11:51:56,598 INFO L158 Benchmark]: Toolchain (without parser) took 17131.52ms. Allocated memory was 148.9MB in the beginning and 197.1MB in the end (delta: 48.2MB). Free memory was 109.3MB in the beginning and 107.9MB in the end (delta: 1.4MB). Peak memory consumption was 51.8MB. Max. memory is 16.1GB. [2023-11-26 11:51:56,598 INFO L158 Benchmark]: CDTParser took 1.40ms. Allocated memory is still 148.9MB. Free memory is still 94.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:51:56,598 INFO L158 Benchmark]: CACSL2BoogieTranslator took 289.14ms. Allocated memory is still 148.9MB. Free memory was 109.0MB in the beginning and 98.9MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-26 11:51:56,600 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.27ms. Allocated memory is still 148.9MB. Free memory was 98.9MB in the beginning and 97.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 11:51:56,600 INFO L158 Benchmark]: Boogie Preprocessor took 57.21ms. Allocated memory is still 148.9MB. Free memory was 97.4MB in the beginning and 95.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 11:51:56,600 INFO L158 Benchmark]: RCFGBuilder took 404.22ms. Allocated memory is still 148.9MB. Free memory was 95.7MB in the beginning and 83.4MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-26 11:51:56,601 INFO L158 Benchmark]: TraceAbstraction took 16227.66ms. Allocated memory was 148.9MB in the beginning and 197.1MB in the end (delta: 48.2MB). Free memory was 82.7MB in the beginning and 113.2MB in the end (delta: -30.5MB). Peak memory consumption was 83.7MB. Max. memory is 16.1GB. [2023-11-26 11:51:56,604 INFO L158 Benchmark]: Witness Printer took 109.69ms. Allocated memory is still 197.1MB. Free memory was 112.1MB in the beginning and 107.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-26 11:51:56,613 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.40ms. Allocated memory is still 148.9MB. Free memory is still 94.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 289.14ms. Allocated memory is still 148.9MB. Free memory was 109.0MB in the beginning and 98.9MB in the end (delta: 10.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.27ms. Allocated memory is still 148.9MB. Free memory was 98.9MB in the beginning and 97.4MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 57.21ms. Allocated memory is still 148.9MB. Free memory was 97.4MB in the beginning and 95.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 404.22ms. Allocated memory is still 148.9MB. Free memory was 95.7MB in the beginning and 83.4MB in the end (delta: 12.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 16227.66ms. Allocated memory was 148.9MB in the beginning and 197.1MB in the end (delta: 48.2MB). Free memory was 82.7MB in the beginning and 113.2MB in the end (delta: -30.5MB). Peak memory consumption was 83.7MB. Max. memory is 16.1GB. * Witness Printer took 109.69ms. Allocated memory is still 197.1MB. Free memory was 112.1MB in the beginning and 107.9MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 48 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 16.2s, OverallIterations: 22, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1100 SdHoareTripleChecker+Valid, 2.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1064 mSDsluCounter, 4377 SdHoareTripleChecker+Invalid, 2.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3655 mSDsCounter, 281 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3626 IncrementalHoareTripleChecker+Invalid, 3907 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 281 mSolverCounterUnsat, 722 mSDtfsCounter, 3626 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1569 GetRequests, 1221 SyntacticMatches, 56 SemanticMatches, 292 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1371 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=134occurred in iteration=14, InterpolantAutomatonStates: 228, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 22 MinimizatonAttempts, 200 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 262 PreInvPairs, 283 NumberOfFragments, 99 HoareAnnotationTreeSize, 262 FomulaSimplifications, 2346 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 458 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 7.1s InterpolantComputationTime, 1513 NumberOfCodeBlocks, 1513 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 2044 ConstructedInterpolants, 0 QuantifiedInterpolants, 4269 SizeOfPredicates, 30 NumberOfNonLiveVariables, 1440 ConjunctsInSsa, 115 ConjunctsInUnsatCore, 44 InterpolantComputations, 12 PerfectInterpolantSequences, 1086/1456 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-26 11:51:56,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_dc163714-4cad-446b-9858-f2c9503853b3/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE