./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB --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 24cc882af4ec42ba94c424c5a1ed92d402543c0fe2bf17d3fca0ca1cd73500b7 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:08:35,482 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:08:35,583 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-28 03:08:35,591 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:08:35,595 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:08:35,631 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:08:35,632 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:08:35,632 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:08:35,633 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:08:35,633 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:08:35,634 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:08:35,634 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:08:35,635 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:08:35,635 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:08:35,636 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:08:35,636 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:08:35,636 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:08:35,636 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:08:35,636 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:08:35,636 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:08:35,636 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:08:35,636 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:08:35,636 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:08:35,637 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:08:35,637 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-28 03:08:35,637 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 03:08:35,637 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:08:35,637 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:08:35,637 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:08:35,637 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:08:35,638 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:08:35,638 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:08:35,638 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:08:35,638 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:08:35,638 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:08:35,638 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:08:35,638 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:08:35,638 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:08:35,638 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:08:35,639 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:08:35,639 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:08:35,639 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:08:35,639 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:08:35,639 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:08:35,639 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:08:35,639 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:08:35,639 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:08:35,639 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:08:35,640 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:08:35,640 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:08:35,640 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 24cc882af4ec42ba94c424c5a1ed92d402543c0fe2bf17d3fca0ca1cd73500b7 [2024-11-28 03:08:35,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:08:35,939 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:08:35,942 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:08:35,943 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:08:35,944 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:08:35,946 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c [2024-11-28 03:08:38,984 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/data/fb40e902c/f297dc6e9ac24c79806a56c5abbe6b38/FLAGdb65d8ef2 [2024-11-28 03:08:39,315 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:08:39,316 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/sv-benchmarks/c/recursive-simple/fibo_2calls_5-1.c [2024-11-28 03:08:39,326 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/data/fb40e902c/f297dc6e9ac24c79806a56c5abbe6b38/FLAGdb65d8ef2 [2024-11-28 03:08:39,584 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/data/fb40e902c/f297dc6e9ac24c79806a56c5abbe6b38 [2024-11-28 03:08:39,586 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:08:39,587 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:08:39,589 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:08:39,589 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:08:39,594 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:08:39,595 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:08:39" (1/1) ... [2024-11-28 03:08:39,598 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f29419b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:08:39, skipping insertion in model container [2024-11-28 03:08:39,598 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:08:39" (1/1) ... [2024-11-28 03:08:39,610 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:08:39,779 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:08:39,795 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:08:39,817 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:08:39,840 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:08:39,840 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:08:39 WrapperNode [2024-11-28 03:08:39,841 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:08:39,842 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:08:39,842 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:08:39,842 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:08:39,854 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:08:39" (1/1) ... [2024-11-28 03:08:39,863 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:08:39" (1/1) ... [2024-11-28 03:08:39,880 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 21 [2024-11-28 03:08:39,881 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:08:39,882 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:08:39,882 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:08:39,882 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:08:39,892 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:08:39" (1/1) ... [2024-11-28 03:08:39,893 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:08:39" (1/1) ... [2024-11-28 03:08:39,894 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:08:39" (1/1) ... [2024-11-28 03:08:39,905 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]. [2024-11-28 03:08:39,905 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:08:39" (1/1) ... [2024-11-28 03:08:39,906 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:08:39" (1/1) ... [2024-11-28 03:08:39,909 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:08:39" (1/1) ... [2024-11-28 03:08:39,909 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:08:39" (1/1) ... [2024-11-28 03:08:39,911 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:08:39" (1/1) ... [2024-11-28 03:08:39,912 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:08:39" (1/1) ... [2024-11-28 03:08:39,913 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:08:39" (1/1) ... [2024-11-28 03:08:39,915 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:08:39,916 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:08:39,916 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:08:39,916 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:08:39,917 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:08:39" (1/1) ... [2024-11-28 03:08:39,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:08:39,937 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:08:39,953 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:08:39,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:08:39,987 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:08:39,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:08:39,988 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2024-11-28 03:08:39,988 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2024-11-28 03:08:39,989 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2024-11-28 03:08:39,989 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2024-11-28 03:08:39,989 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:08:39,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:08:40,057 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:08:40,059 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:08:40,239 INFO L? ?]: Removed 24 outVars from TransFormulas that were not future-live. [2024-11-28 03:08:40,239 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:08:40,251 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:08:40,251 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-28 03:08:40,252 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:08:40 BoogieIcfgContainer [2024-11-28 03:08:40,252 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:08:40,255 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:08:40,255 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:08:40,260 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:08:40,260 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:08:39" (1/3) ... [2024-11-28 03:08:40,261 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3340332e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:08:40, skipping insertion in model container [2024-11-28 03:08:40,261 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:08:39" (2/3) ... [2024-11-28 03:08:40,262 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3340332e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:08:40, skipping insertion in model container [2024-11-28 03:08:40,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:08:40" (3/3) ... [2024-11-28 03:08:40,263 INFO L128 eAbstractionObserver]: Analyzing ICFG fibo_2calls_5-1.c [2024-11-28 03:08:40,280 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:08:40,282 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG fibo_2calls_5-1.c that has 3 procedures, 53 locations, 1 initial locations, 0 loop locations, and 12 error locations. [2024-11-28 03:08:40,345 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:08:40,366 INFO L333 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, 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;@31254cb7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:08:40,366 INFO L334 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2024-11-28 03:08:40,373 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 33 states have (on average 1.5151515151515151) internal successors, (50), 45 states have internal predecessors, (50), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 03:08:40,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-28 03:08:40,381 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:08:40,381 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:08:40,382 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 03:08:40,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:08:40,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1867028009, now seen corresponding path program 1 times [2024-11-28 03:08:40,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:08:40,399 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614580518] [2024-11-28 03:08:40,400 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:40,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:08:40,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:40,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:08:40,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:08:40,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614580518] [2024-11-28 03:08:40,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614580518] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:08:40,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:08:40,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:08:40,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197172405] [2024-11-28 03:08:40,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:08:40,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:08:40,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:08:40,596 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:08:40,596 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:08:40,599 INFO L87 Difference]: Start difference. First operand has 53 states, 33 states have (on average 1.5151515151515151) internal successors, (50), 45 states have internal predecessors, (50), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:08:40,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:08:40,689 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2024-11-28 03:08:40,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:08:40,693 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-28 03:08:40,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:08:40,703 INFO L225 Difference]: With dead ends: 59 [2024-11-28 03:08:40,704 INFO L226 Difference]: Without dead ends: 45 [2024-11-28 03:08:40,708 INFO L434 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 [2024-11-28 03:08:40,716 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 11 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:08:40,717 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 92 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:08:40,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-28 03:08:40,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2024-11-28 03:08:40,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 36 states have internal predecessors, (40), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 03:08:40,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2024-11-28 03:08:40,777 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 7 [2024-11-28 03:08:40,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:08:40,777 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2024-11-28 03:08:40,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:08:40,778 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2024-11-28 03:08:40,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-28 03:08:40,780 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:08:40,780 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:08:40,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:08:40,781 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 03:08:40,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:08:40,782 INFO L85 PathProgramCache]: Analyzing trace with hash 2043293518, now seen corresponding path program 1 times [2024-11-28 03:08:40,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:08:40,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044791171] [2024-11-28 03:08:40,783 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:40,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:08:40,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:40,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:08:40,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:08:40,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044791171] [2024-11-28 03:08:40,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044791171] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:08:40,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:08:40,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:08:40,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335598612] [2024-11-28 03:08:40,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:08:40,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:08:40,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:08:40,875 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:08:40,875 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:08:40,875 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:08:41,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:08:41,011 INFO L93 Difference]: Finished difference Result 64 states and 72 transitions. [2024-11-28 03:08:41,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:08:41,011 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-28 03:08:41,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:08:41,012 INFO L225 Difference]: With dead ends: 64 [2024-11-28 03:08:41,014 INFO L226 Difference]: Without dead ends: 58 [2024-11-28 03:08:41,015 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:08:41,016 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 26 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:08:41,016 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 164 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:08:41,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-28 03:08:41,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2024-11-28 03:08:41,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 46 states have internal predecessors, (52), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 03:08:41,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2024-11-28 03:08:41,038 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 8 [2024-11-28 03:08:41,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:08:41,039 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2024-11-28 03:08:41,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:08:41,040 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2024-11-28 03:08:41,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-28 03:08:41,042 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:08:41,042 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:08:41,042 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:08:41,043 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 03:08:41,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:08:41,044 INFO L85 PathProgramCache]: Analyzing trace with hash -749725533, now seen corresponding path program 1 times [2024-11-28 03:08:41,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:08:41,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181164429] [2024-11-28 03:08:41,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:41,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:08:41,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:41,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:08:41,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:08:41,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181164429] [2024-11-28 03:08:41,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181164429] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:08:41,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:08:41,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:08:41,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988866098] [2024-11-28 03:08:41,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:08:41,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:08:41,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:08:41,140 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:08:41,141 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:08:41,142 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:08:41,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:08:41,222 INFO L93 Difference]: Finished difference Result 58 states and 70 transitions. [2024-11-28 03:08:41,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:08:41,223 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-28 03:08:41,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:08:41,224 INFO L225 Difference]: With dead ends: 58 [2024-11-28 03:08:41,224 INFO L226 Difference]: Without dead ends: 56 [2024-11-28 03:08:41,224 INFO L434 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 [2024-11-28 03:08:41,225 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 11 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:08:41,225 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 72 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:08:41,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-28 03:08:41,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2024-11-28 03:08:41,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 44 states have internal predecessors, (50), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 03:08:41,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2024-11-28 03:08:41,243 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 13 [2024-11-28 03:08:41,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:08:41,243 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2024-11-28 03:08:41,244 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:08:41,244 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2024-11-28 03:08:41,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-28 03:08:41,244 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:08:41,244 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:08:41,244 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:08:41,245 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 03:08:41,245 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:08:41,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1766654982, now seen corresponding path program 1 times [2024-11-28 03:08:41,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:08:41,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592530289] [2024-11-28 03:08:41,246 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:41,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:08:41,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:41,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:08:41,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:08:41,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592530289] [2024-11-28 03:08:41,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592530289] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:08:41,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:08:41,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 03:08:41,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131333262] [2024-11-28 03:08:41,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:08:41,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:08:41,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:08:41,384 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:08:41,384 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 03:08:41,385 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:08:41,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:08:41,644 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2024-11-28 03:08:41,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:08:41,645 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-28 03:08:41,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:08:41,646 INFO L225 Difference]: With dead ends: 58 [2024-11-28 03:08:41,646 INFO L226 Difference]: Without dead ends: 54 [2024-11-28 03:08:41,646 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-28 03:08:41,648 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 51 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:08:41,650 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 102 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:08:41,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-28 03:08:41,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2024-11-28 03:08:41,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 40 states have internal predecessors, (46), 7 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-28 03:08:41,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2024-11-28 03:08:41,671 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 14 [2024-11-28 03:08:41,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:08:41,672 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2024-11-28 03:08:41,672 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:08:41,672 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2024-11-28 03:08:41,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-28 03:08:41,676 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:08:41,676 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:08:41,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 03:08:41,677 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 03:08:41,677 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:08:41,677 INFO L85 PathProgramCache]: Analyzing trace with hash 2097999453, now seen corresponding path program 1 times [2024-11-28 03:08:41,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:08:41,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082902241] [2024-11-28 03:08:41,678 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:41,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:08:41,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:41,869 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:08:41,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:08:41,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082902241] [2024-11-28 03:08:41,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082902241] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:08:41,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:08:41,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:08:41,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770586179] [2024-11-28 03:08:41,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:08:41,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:08:41,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:08:41,872 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:08:41,872 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:08:41,873 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:08:41,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:08:41,942 INFO L93 Difference]: Finished difference Result 74 states and 94 transitions. [2024-11-28 03:08:41,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:08:41,945 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2024-11-28 03:08:41,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:08:41,947 INFO L225 Difference]: With dead ends: 74 [2024-11-28 03:08:41,947 INFO L226 Difference]: Without dead ends: 69 [2024-11-28 03:08:41,947 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:08:41,948 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 4 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:08:41,948 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 115 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:08:41,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-28 03:08:41,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 63. [2024-11-28 03:08:41,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 50 states have internal predecessors, (56), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (13), 9 states have call predecessors, (13), 8 states have call successors, (13) [2024-11-28 03:08:41,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 78 transitions. [2024-11-28 03:08:41,971 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 78 transitions. Word has length 23 [2024-11-28 03:08:41,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:08:41,972 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 78 transitions. [2024-11-28 03:08:41,972 INFO L472 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) [2024-11-28 03:08:41,972 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 78 transitions. [2024-11-28 03:08:41,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-28 03:08:41,973 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:08:41,974 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:08:41,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 03:08:41,974 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 03:08:41,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:08:41,975 INFO L85 PathProgramCache]: Analyzing trace with hash 624421350, now seen corresponding path program 1 times [2024-11-28 03:08:41,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:08:41,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50310275] [2024-11-28 03:08:41,975 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:41,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:08:41,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:42,122 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 03:08:42,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:08:42,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50310275] [2024-11-28 03:08:42,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50310275] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:08:42,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754863052] [2024-11-28 03:08:42,124 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:42,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:08:42,124 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:08:42,130 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:08:42,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:08:42,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:42,191 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:08:42,195 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:08:42,329 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:08:42,329 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:08:42,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754863052] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:08:42,330 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:08:42,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2024-11-28 03:08:42,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624001999] [2024-11-28 03:08:42,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:08:42,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 03:08:42,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:08:42,335 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 03:08:42,335 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:08:42,335 INFO L87 Difference]: Start difference. First operand 63 states and 78 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:08:42,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:08:42,494 INFO L93 Difference]: Finished difference Result 113 states and 140 transitions. [2024-11-28 03:08:42,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 03:08:42,494 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2024-11-28 03:08:42,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:08:42,496 INFO L225 Difference]: With dead ends: 113 [2024-11-28 03:08:42,496 INFO L226 Difference]: Without dead ends: 63 [2024-11-28 03:08:42,497 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:08:42,498 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 32 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:08:42,499 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 153 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:08:42,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-28 03:08:42,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2024-11-28 03:08:42,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 44 states have (on average 1.2045454545454546) internal successors, (53), 47 states have internal predecessors, (53), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (10), 8 states have call predecessors, (10), 7 states have call successors, (10) [2024-11-28 03:08:42,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 71 transitions. [2024-11-28 03:08:42,514 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 71 transitions. Word has length 24 [2024-11-28 03:08:42,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:08:42,514 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 71 transitions. [2024-11-28 03:08:42,514 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:08:42,514 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 71 transitions. [2024-11-28 03:08:42,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-28 03:08:42,515 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:08:42,515 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:08:42,523 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 03:08:42,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-11-28 03:08:42,716 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 03:08:42,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:08:42,716 INFO L85 PathProgramCache]: Analyzing trace with hash 120521327, now seen corresponding path program 1 times [2024-11-28 03:08:42,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:08:42,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665130756] [2024-11-28 03:08:42,716 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:42,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:08:42,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:42,905 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 03:08:42,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:08:42,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665130756] [2024-11-28 03:08:42,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665130756] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:08:42,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:08:42,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:08:42,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584264650] [2024-11-28 03:08:42,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:08:42,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:08:42,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:08:42,908 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:08:42,908 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:08:42,908 INFO L87 Difference]: Start difference. First operand 59 states and 71 transitions. Second operand has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:08:42,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:08:42,973 INFO L93 Difference]: Finished difference Result 83 states and 108 transitions. [2024-11-28 03:08:42,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:08:42,974 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 25 [2024-11-28 03:08:42,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:08:42,975 INFO L225 Difference]: With dead ends: 83 [2024-11-28 03:08:42,975 INFO L226 Difference]: Without dead ends: 78 [2024-11-28 03:08:42,975 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:08:42,976 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 3 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:08:42,976 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 151 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:08:42,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-28 03:08:42,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 69. [2024-11-28 03:08:42,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 51 states have (on average 1.1764705882352942) internal successors, (60), 55 states have internal predecessors, (60), 10 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (19), 10 states have call predecessors, (19), 9 states have call successors, (19) [2024-11-28 03:08:42,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 89 transitions. [2024-11-28 03:08:42,994 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 89 transitions. Word has length 25 [2024-11-28 03:08:42,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:08:42,994 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 89 transitions. [2024-11-28 03:08:42,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:08:42,994 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 89 transitions. [2024-11-28 03:08:42,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-28 03:08:42,995 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:08:42,995 INFO L218 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] [2024-11-28 03:08:42,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 03:08:42,996 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 03:08:42,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:08:42,996 INFO L85 PathProgramCache]: Analyzing trace with hash -473230649, now seen corresponding path program 1 times [2024-11-28 03:08:42,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:08:42,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910313940] [2024-11-28 03:08:42,997 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:42,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:08:43,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:43,100 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-28 03:08:43,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:08:43,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910313940] [2024-11-28 03:08:43,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910313940] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:08:43,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:08:43,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:08:43,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707332380] [2024-11-28 03:08:43,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:08:43,101 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:08:43,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:08:43,102 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:08:43,102 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:08:43,102 INFO L87 Difference]: Start difference. First operand 69 states and 89 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:08:43,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:08:43,154 INFO L93 Difference]: Finished difference Result 83 states and 108 transitions. [2024-11-28 03:08:43,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:08:43,155 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2024-11-28 03:08:43,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:08:43,156 INFO L225 Difference]: With dead ends: 83 [2024-11-28 03:08:43,156 INFO L226 Difference]: Without dead ends: 81 [2024-11-28 03:08:43,156 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:08:43,157 INFO L435 NwaCegarLoop]: 43 mSDtfsCounter, 3 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 156 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 [2024-11-28 03:08:43,157 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 156 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:08:43,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-28 03:08:43,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 78. [2024-11-28 03:08:43,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78 states, 58 states have (on average 1.1551724137931034) internal successors, (67), 62 states have internal predecessors, (67), 11 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (23), 12 states have call predecessors, (23), 10 states have call successors, (23) [2024-11-28 03:08:43,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 101 transitions. [2024-11-28 03:08:43,169 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 101 transitions. Word has length 29 [2024-11-28 03:08:43,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:08:43,169 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 101 transitions. [2024-11-28 03:08:43,170 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:08:43,170 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 101 transitions. [2024-11-28 03:08:43,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-28 03:08:43,171 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:08:43,171 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:08:43,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 03:08:43,171 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 03:08:43,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:08:43,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1773385638, now seen corresponding path program 1 times [2024-11-28 03:08:43,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:08:43,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374585132] [2024-11-28 03:08:43,172 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:43,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:08:43,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:43,263 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 03:08:43,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:08:43,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374585132] [2024-11-28 03:08:43,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374585132] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:08:43,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [742874209] [2024-11-28 03:08:43,263 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:43,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:08:43,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:08:43,265 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:08:43,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:08:43,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:43,317 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:08:43,318 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:08:43,442 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:08:43,443 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:08:43,701 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:08:43,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [742874209] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:08:43,702 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:08:43,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2024-11-28 03:08:43,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576399443] [2024-11-28 03:08:43,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:08:43,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 03:08:43,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:08:43,703 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 03:08:43,703 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2024-11-28 03:08:43,704 INFO L87 Difference]: Start difference. First operand 78 states and 101 transitions. Second operand has 19 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 9 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-28 03:08:44,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:08:44,232 INFO L93 Difference]: Finished difference Result 204 states and 275 transitions. [2024-11-28 03:08:44,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 03:08:44,234 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 9 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 30 [2024-11-28 03:08:44,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:08:44,235 INFO L225 Difference]: With dead ends: 204 [2024-11-28 03:08:44,235 INFO L226 Difference]: Without dead ends: 135 [2024-11-28 03:08:44,237 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 50 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=476, Unknown=0, NotChecked=0, Total=552 [2024-11-28 03:08:44,240 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 130 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 531 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:08:44,241 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 557 Invalid, 531 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 495 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:08:44,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-11-28 03:08:44,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 121. [2024-11-28 03:08:44,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 92 states have (on average 1.1630434782608696) internal successors, (107), 97 states have internal predecessors, (107), 16 states have call successors, (16), 6 states have call predecessors, (16), 9 states have return successors, (35), 17 states have call predecessors, (35), 15 states have call successors, (35) [2024-11-28 03:08:44,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 158 transitions. [2024-11-28 03:08:44,271 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 158 transitions. Word has length 30 [2024-11-28 03:08:44,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:08:44,272 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 158 transitions. [2024-11-28 03:08:44,272 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 15 states have internal predecessors, (59), 9 states have call successors, (12), 6 states have call predecessors, (12), 5 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-28 03:08:44,272 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 158 transitions. [2024-11-28 03:08:44,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-28 03:08:44,273 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:08:44,273 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:08:44,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 03:08:44,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:08:44,477 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 03:08:44,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:08:44,478 INFO L85 PathProgramCache]: Analyzing trace with hash -463506674, now seen corresponding path program 2 times [2024-11-28 03:08:44,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:08:44,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485488407] [2024-11-28 03:08:44,478 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:08:44,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:08:44,491 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:08:44,491 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:08:44,584 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 03:08:44,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:08:44,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485488407] [2024-11-28 03:08:44,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485488407] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:08:44,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281851692] [2024-11-28 03:08:44,584 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:08:44,585 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:08:44,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:08:44,587 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:08:44,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:08:44,639 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:08:44,639 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:08:44,640 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 03:08:44,642 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:08:44,706 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 03:08:44,707 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:08:44,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281851692] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:08:44,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:08:44,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-28 03:08:44,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021800809] [2024-11-28 03:08:44,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:08:44,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:08:44,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:08:44,709 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:08:44,710 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:08:44,710 INFO L87 Difference]: Start difference. First operand 121 states and 158 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:08:44,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:08:44,757 INFO L93 Difference]: Finished difference Result 133 states and 175 transitions. [2024-11-28 03:08:44,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:08:44,757 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 42 [2024-11-28 03:08:44,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:08:44,760 INFO L225 Difference]: With dead ends: 133 [2024-11-28 03:08:44,762 INFO L226 Difference]: Without dead ends: 132 [2024-11-28 03:08:44,762 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:08:44,763 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 3 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:08:44,763 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 140 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:08:44,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-28 03:08:44,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 127. [2024-11-28 03:08:44,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 98 states have (on average 1.153061224489796) internal successors, (113), 100 states have internal predecessors, (113), 16 states have call successors, (16), 6 states have call predecessors, (16), 9 states have return successors, (35), 20 states have call predecessors, (35), 15 states have call successors, (35) [2024-11-28 03:08:44,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 164 transitions. [2024-11-28 03:08:44,795 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 164 transitions. Word has length 42 [2024-11-28 03:08:44,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:08:44,799 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 164 transitions. [2024-11-28 03:08:44,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:08:44,799 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 164 transitions. [2024-11-28 03:08:44,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-28 03:08:44,800 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:08:44,800 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:08:44,814 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 03:08:45,000 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 03:08:45,001 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 03:08:45,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:08:45,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1483804933, now seen corresponding path program 1 times [2024-11-28 03:08:45,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:08:45,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788952818] [2024-11-28 03:08:45,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:45,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:08:45,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:45,154 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 03:08:45,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:08:45,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788952818] [2024-11-28 03:08:45,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788952818] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:08:45,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1658250946] [2024-11-28 03:08:45,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:45,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:08:45,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:08:45,161 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:08:45,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:08:45,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:45,202 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:08:45,204 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:08:45,278 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 03:08:45,278 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:08:45,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1658250946] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:08:45,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:08:45,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2024-11-28 03:08:45,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487899154] [2024-11-28 03:08:45,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:08:45,280 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:08:45,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:08:45,280 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:08:45,281 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:08:45,281 INFO L87 Difference]: Start difference. First operand 127 states and 164 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:08:45,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:08:45,332 INFO L93 Difference]: Finished difference Result 155 states and 203 transitions. [2024-11-28 03:08:45,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:08:45,332 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 43 [2024-11-28 03:08:45,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:08:45,334 INFO L225 Difference]: With dead ends: 155 [2024-11-28 03:08:45,334 INFO L226 Difference]: Without dead ends: 154 [2024-11-28 03:08:45,334 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:08:45,335 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 2 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:08:45,335 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 148 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:08:45,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2024-11-28 03:08:45,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 138. [2024-11-28 03:08:45,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 107 states have (on average 1.1401869158878504) internal successors, (122), 108 states have internal predecessors, (122), 18 states have call successors, (18), 6 states have call predecessors, (18), 9 states have return successors, (41), 23 states have call predecessors, (41), 17 states have call successors, (41) [2024-11-28 03:08:45,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 181 transitions. [2024-11-28 03:08:45,363 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 181 transitions. Word has length 43 [2024-11-28 03:08:45,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:08:45,365 INFO L471 AbstractCegarLoop]: Abstraction has 138 states and 181 transitions. [2024-11-28 03:08:45,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:08:45,365 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 181 transitions. [2024-11-28 03:08:45,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-28 03:08:45,370 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:08:45,370 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:08:45,380 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 03:08:45,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:08:45,571 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 03:08:45,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:08:45,571 INFO L85 PathProgramCache]: Analyzing trace with hash 1614425526, now seen corresponding path program 1 times [2024-11-28 03:08:45,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:08:45,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34620839] [2024-11-28 03:08:45,571 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:45,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:08:45,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:45,677 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-28 03:08:45,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:08:45,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34620839] [2024-11-28 03:08:45,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34620839] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:08:45,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:08:45,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:08:45,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834322250] [2024-11-28 03:08:45,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:08:45,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:08:45,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:08:45,681 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:08:45,681 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:08:45,681 INFO L87 Difference]: Start difference. First operand 138 states and 181 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:08:45,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:08:45,740 INFO L93 Difference]: Finished difference Result 154 states and 202 transitions. [2024-11-28 03:08:45,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:08:45,741 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2024-11-28 03:08:45,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:08:45,743 INFO L225 Difference]: With dead ends: 154 [2024-11-28 03:08:45,743 INFO L226 Difference]: Without dead ends: 153 [2024-11-28 03:08:45,743 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:08:45,745 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 2 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:08:45,745 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 154 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:08:45,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-11-28 03:08:45,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 134. [2024-11-28 03:08:45,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 104 states have (on average 1.1442307692307692) internal successors, (119), 105 states have internal predecessors, (119), 17 states have call successors, (17), 6 states have call predecessors, (17), 9 states have return successors, (38), 22 states have call predecessors, (38), 16 states have call successors, (38) [2024-11-28 03:08:45,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 174 transitions. [2024-11-28 03:08:45,765 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 174 transitions. Word has length 44 [2024-11-28 03:08:45,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:08:45,765 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 174 transitions. [2024-11-28 03:08:45,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:08:45,766 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 174 transitions. [2024-11-28 03:08:45,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-28 03:08:45,767 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:08:45,767 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:08:45,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 03:08:45,768 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 03:08:45,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:08:45,768 INFO L85 PathProgramCache]: Analyzing trace with hash 2086948818, now seen corresponding path program 1 times [2024-11-28 03:08:45,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:08:45,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034460204] [2024-11-28 03:08:45,768 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:45,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:08:45,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:45,873 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-28 03:08:45,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:08:45,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034460204] [2024-11-28 03:08:45,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034460204] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:08:45,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359740439] [2024-11-28 03:08:45,874 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:45,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:08:45,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:08:45,876 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:08:45,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 03:08:45,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:45,921 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 03:08:45,923 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:08:46,161 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:08:46,162 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:08:46,534 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 27 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 03:08:46,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359740439] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:08:46,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:08:46,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 15, 15] total 31 [2024-11-28 03:08:46,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670256892] [2024-11-28 03:08:46,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:08:46,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-28 03:08:46,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:08:46,538 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-28 03:08:46,538 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=825, Unknown=0, NotChecked=0, Total=930 [2024-11-28 03:08:46,539 INFO L87 Difference]: Start difference. First operand 134 states and 174 transitions. Second operand has 31 states, 29 states have (on average 3.0689655172413794) internal successors, (89), 21 states have internal predecessors, (89), 14 states have call successors, (18), 11 states have call predecessors, (18), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-28 03:08:47,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:08:47,332 INFO L93 Difference]: Finished difference Result 298 states and 402 transitions. [2024-11-28 03:08:47,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-28 03:08:47,333 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 3.0689655172413794) internal successors, (89), 21 states have internal predecessors, (89), 14 states have call successors, (18), 11 states have call predecessors, (18), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 48 [2024-11-28 03:08:47,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:08:47,335 INFO L225 Difference]: With dead ends: 298 [2024-11-28 03:08:47,335 INFO L226 Difference]: Without dead ends: 183 [2024-11-28 03:08:47,337 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 424 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=280, Invalid=1700, Unknown=0, NotChecked=0, Total=1980 [2024-11-28 03:08:47,338 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 290 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 399 SdHoareTripleChecker+Invalid, 781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:08:47,338 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 399 Invalid, 781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:08:47,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-28 03:08:47,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 169. [2024-11-28 03:08:47,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 133 states have (on average 1.1353383458646618) internal successors, (151), 132 states have internal predecessors, (151), 21 states have call successors, (21), 8 states have call predecessors, (21), 11 states have return successors, (39), 28 states have call predecessors, (39), 20 states have call successors, (39) [2024-11-28 03:08:47,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 211 transitions. [2024-11-28 03:08:47,356 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 211 transitions. Word has length 48 [2024-11-28 03:08:47,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:08:47,357 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 211 transitions. [2024-11-28 03:08:47,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 3.0689655172413794) internal successors, (89), 21 states have internal predecessors, (89), 14 states have call successors, (18), 11 states have call predecessors, (18), 4 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-28 03:08:47,357 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 211 transitions. [2024-11-28 03:08:47,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-28 03:08:47,358 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:08:47,359 INFO L218 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] [2024-11-28 03:08:47,370 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 03:08:47,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-28 03:08:47,562 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 03:08:47,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:08:47,563 INFO L85 PathProgramCache]: Analyzing trace with hash 632910190, now seen corresponding path program 1 times [2024-11-28 03:08:47,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:08:47,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372702920] [2024-11-28 03:08:47,563 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:47,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:08:47,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:47,635 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-28 03:08:47,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:08:47,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372702920] [2024-11-28 03:08:47,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372702920] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:08:47,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926885772] [2024-11-28 03:08:47,635 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:47,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:08:47,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:08:47,638 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:08:47,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 03:08:47,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:47,685 INFO L256 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 03:08:47,689 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:08:47,905 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 16 proven. 26 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 03:08:47,905 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:08:48,141 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 16 proven. 26 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 03:08:48,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926885772] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:08:48,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:08:48,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 13, 13] total 17 [2024-11-28 03:08:48,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646985680] [2024-11-28 03:08:48,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:08:48,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 03:08:48,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:08:48,143 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 03:08:48,143 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2024-11-28 03:08:48,144 INFO L87 Difference]: Start difference. First operand 169 states and 211 transitions. Second operand has 17 states, 16 states have (on average 4.3125) internal successors, (69), 13 states have internal predecessors, (69), 8 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-28 03:08:48,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:08:48,666 INFO L93 Difference]: Finished difference Result 315 states and 397 transitions. [2024-11-28 03:08:48,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 03:08:48,667 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 4.3125) internal successors, (69), 13 states have internal predecessors, (69), 8 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 61 [2024-11-28 03:08:48,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:08:48,668 INFO L225 Difference]: With dead ends: 315 [2024-11-28 03:08:48,669 INFO L226 Difference]: Without dead ends: 181 [2024-11-28 03:08:48,670 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 103 SyntacticMatches, 10 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=628, Unknown=0, NotChecked=0, Total=756 [2024-11-28 03:08:48,671 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 131 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:08:48,671 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 268 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:08:48,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-11-28 03:08:48,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 165. [2024-11-28 03:08:48,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 129 states have (on average 1.124031007751938) internal successors, (145), 130 states have internal predecessors, (145), 21 states have call successors, (21), 8 states have call predecessors, (21), 11 states have return successors, (31), 26 states have call predecessors, (31), 20 states have call successors, (31) [2024-11-28 03:08:48,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 197 transitions. [2024-11-28 03:08:48,698 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 197 transitions. Word has length 61 [2024-11-28 03:08:48,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:08:48,699 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 197 transitions. [2024-11-28 03:08:48,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 4.3125) internal successors, (69), 13 states have internal predecessors, (69), 8 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-28 03:08:48,699 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 197 transitions. [2024-11-28 03:08:48,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-28 03:08:48,700 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:08:48,700 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:08:48,709 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 03:08:48,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 03:08:48,904 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 03:08:48,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:08:48,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1305190632, now seen corresponding path program 1 times [2024-11-28 03:08:48,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:08:48,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776714085] [2024-11-28 03:08:48,905 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:48,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:08:48,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:48,983 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-28 03:08:48,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:08:48,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776714085] [2024-11-28 03:08:48,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776714085] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:08:48,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:08:48,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:08:48,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989211910] [2024-11-28 03:08:48,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:08:48,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:08:48,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:08:48,985 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:08:48,985 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:08:48,986 INFO L87 Difference]: Start difference. First operand 165 states and 197 transitions. Second operand has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 03:08:49,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:08:49,022 INFO L93 Difference]: Finished difference Result 169 states and 202 transitions. [2024-11-28 03:08:49,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:08:49,023 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 55 [2024-11-28 03:08:49,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:08:49,024 INFO L225 Difference]: With dead ends: 169 [2024-11-28 03:08:49,025 INFO L226 Difference]: Without dead ends: 168 [2024-11-28 03:08:49,026 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:08:49,026 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 3 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:08:49,028 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 140 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:08:49,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-11-28 03:08:49,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 167. [2024-11-28 03:08:49,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 131 states have (on average 1.1145038167938932) internal successors, (146), 131 states have internal predecessors, (146), 21 states have call successors, (21), 8 states have call predecessors, (21), 11 states have return successors, (31), 27 states have call predecessors, (31), 20 states have call successors, (31) [2024-11-28 03:08:49,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 198 transitions. [2024-11-28 03:08:49,042 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 198 transitions. Word has length 55 [2024-11-28 03:08:49,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:08:49,042 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 198 transitions. [2024-11-28 03:08:49,042 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 03:08:49,043 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 198 transitions. [2024-11-28 03:08:49,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-28 03:08:49,043 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:08:49,044 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:08:49,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 03:08:49,044 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 03:08:49,044 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:08:49,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1806203829, now seen corresponding path program 1 times [2024-11-28 03:08:49,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:08:49,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932298711] [2024-11-28 03:08:49,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:49,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:08:49,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:49,118 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-28 03:08:49,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:08:49,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932298711] [2024-11-28 03:08:49,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932298711] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:08:49,118 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:08:49,118 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:08:49,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84276161] [2024-11-28 03:08:49,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:08:49,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:08:49,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:08:49,119 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:08:49,119 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:08:49,119 INFO L87 Difference]: Start difference. First operand 167 states and 198 transitions. Second operand has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 03:08:49,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:08:49,154 INFO L93 Difference]: Finished difference Result 169 states and 200 transitions. [2024-11-28 03:08:49,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:08:49,155 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 56 [2024-11-28 03:08:49,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:08:49,157 INFO L225 Difference]: With dead ends: 169 [2024-11-28 03:08:49,157 INFO L226 Difference]: Without dead ends: 168 [2024-11-28 03:08:49,157 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:08:49,158 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 2 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:08:49,158 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 107 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:08:49,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-11-28 03:08:49,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 161. [2024-11-28 03:08:49,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 126 states have (on average 1.1111111111111112) internal successors, (140), 127 states have internal predecessors, (140), 20 states have call successors, (20), 8 states have call predecessors, (20), 11 states have return successors, (30), 25 states have call predecessors, (30), 19 states have call successors, (30) [2024-11-28 03:08:49,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 190 transitions. [2024-11-28 03:08:49,171 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 190 transitions. Word has length 56 [2024-11-28 03:08:49,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:08:49,172 INFO L471 AbstractCegarLoop]: Abstraction has 161 states and 190 transitions. [2024-11-28 03:08:49,172 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 03:08:49,172 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 190 transitions. [2024-11-28 03:08:49,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-28 03:08:49,173 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:08:49,173 INFO L218 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] [2024-11-28 03:08:49,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 03:08:49,173 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 03:08:49,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:08:49,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1795256181, now seen corresponding path program 1 times [2024-11-28 03:08:49,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:08:49,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566735752] [2024-11-28 03:08:49,174 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:49,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:08:49,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:49,261 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-28 03:08:49,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:08:49,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566735752] [2024-11-28 03:08:49,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566735752] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:08:49,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:08:49,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:08:49,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112687444] [2024-11-28 03:08:49,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:08:49,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:08:49,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:08:49,262 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:08:49,263 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:08:49,263 INFO L87 Difference]: Start difference. First operand 161 states and 190 transitions. Second operand has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 03:08:49,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:08:49,303 INFO L93 Difference]: Finished difference Result 168 states and 199 transitions. [2024-11-28 03:08:49,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:08:49,304 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 56 [2024-11-28 03:08:49,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:08:49,305 INFO L225 Difference]: With dead ends: 168 [2024-11-28 03:08:49,305 INFO L226 Difference]: Without dead ends: 167 [2024-11-28 03:08:49,306 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:08:49,306 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 3 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:08:49,306 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 117 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:08:49,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-11-28 03:08:49,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 165. [2024-11-28 03:08:49,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 129 states have (on average 1.1085271317829457) internal successors, (143), 130 states have internal predecessors, (143), 20 states have call successors, (20), 8 states have call predecessors, (20), 12 states have return successors, (32), 26 states have call predecessors, (32), 19 states have call successors, (32) [2024-11-28 03:08:49,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 195 transitions. [2024-11-28 03:08:49,320 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 195 transitions. Word has length 56 [2024-11-28 03:08:49,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:08:49,321 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 195 transitions. [2024-11-28 03:08:49,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 03:08:49,321 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 195 transitions. [2024-11-28 03:08:49,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-28 03:08:49,322 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:08:49,322 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:08:49,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 03:08:49,322 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 03:08:49,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:08:49,323 INFO L85 PathProgramCache]: Analyzing trace with hash 181633336, now seen corresponding path program 1 times [2024-11-28 03:08:49,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:08:49,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930923453] [2024-11-28 03:08:49,323 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:49,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:08:49,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:49,469 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-28 03:08:49,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:08:49,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930923453] [2024-11-28 03:08:49,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930923453] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:08:49,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378748093] [2024-11-28 03:08:49,470 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:49,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:08:49,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:08:49,472 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:08:49,475 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 03:08:49,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:49,520 INFO L256 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:08:49,522 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:08:49,628 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-28 03:08:49,628 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:08:49,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378748093] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:08:49,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:08:49,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 14 [2024-11-28 03:08:49,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852944933] [2024-11-28 03:08:49,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:08:49,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 03:08:49,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:08:49,629 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 03:08:49,629 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:08:49,630 INFO L87 Difference]: Start difference. First operand 165 states and 195 transitions. Second operand has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 03:08:49,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:08:49,719 INFO L93 Difference]: Finished difference Result 200 states and 240 transitions. [2024-11-28 03:08:49,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:08:49,719 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 57 [2024-11-28 03:08:49,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:08:49,722 INFO L225 Difference]: With dead ends: 200 [2024-11-28 03:08:49,722 INFO L226 Difference]: Without dead ends: 199 [2024-11-28 03:08:49,723 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:08:49,723 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 4 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 178 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:08:49,723 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 178 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:08:49,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2024-11-28 03:08:49,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 175. [2024-11-28 03:08:49,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 136 states have (on average 1.1102941176470589) internal successors, (151), 138 states have internal predecessors, (151), 21 states have call successors, (21), 8 states have call predecessors, (21), 14 states have return successors, (39), 28 states have call predecessors, (39), 20 states have call successors, (39) [2024-11-28 03:08:49,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 211 transitions. [2024-11-28 03:08:49,743 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 211 transitions. Word has length 57 [2024-11-28 03:08:49,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:08:49,743 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 211 transitions. [2024-11-28 03:08:49,744 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.75) internal successors, (30), 9 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-28 03:08:49,744 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 211 transitions. [2024-11-28 03:08:49,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-28 03:08:49,746 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:08:49,746 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:08:49,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 03:08:49,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 03:08:49,947 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 03:08:49,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:08:49,947 INFO L85 PathProgramCache]: Analyzing trace with hash -2056240160, now seen corresponding path program 1 times [2024-11-28 03:08:49,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:08:49,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600392639] [2024-11-28 03:08:49,948 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:49,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:08:49,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:50,015 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-28 03:08:50,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:08:50,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600392639] [2024-11-28 03:08:50,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600392639] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:08:50,016 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:08:50,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:08:50,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750869520] [2024-11-28 03:08:50,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:08:50,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:08:50,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:08:50,017 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:08:50,017 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:08:50,017 INFO L87 Difference]: Start difference. First operand 175 states and 211 transitions. Second operand has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 03:08:50,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:08:50,057 INFO L93 Difference]: Finished difference Result 183 states and 219 transitions. [2024-11-28 03:08:50,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:08:50,058 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 61 [2024-11-28 03:08:50,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:08:50,059 INFO L225 Difference]: With dead ends: 183 [2024-11-28 03:08:50,059 INFO L226 Difference]: Without dead ends: 182 [2024-11-28 03:08:50,059 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:08:50,060 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 2 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:08:50,060 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 145 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:08:50,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-28 03:08:50,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 175. [2024-11-28 03:08:50,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 136 states have (on average 1.0955882352941178) internal successors, (149), 138 states have internal predecessors, (149), 21 states have call successors, (21), 8 states have call predecessors, (21), 14 states have return successors, (39), 28 states have call predecessors, (39), 20 states have call successors, (39) [2024-11-28 03:08:50,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 209 transitions. [2024-11-28 03:08:50,081 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 209 transitions. Word has length 61 [2024-11-28 03:08:50,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:08:50,081 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 209 transitions. [2024-11-28 03:08:50,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 03:08:50,082 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 209 transitions. [2024-11-28 03:08:50,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-28 03:08:50,083 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:08:50,083 INFO L218 NwaCegarLoop]: trace histogram [6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:08:50,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-28 03:08:50,083 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 03:08:50,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:08:50,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1924796246, now seen corresponding path program 1 times [2024-11-28 03:08:50,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:08:50,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526539411] [2024-11-28 03:08:50,084 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:50,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:08:50,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:50,347 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 20 proven. 30 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 03:08:50,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:08:50,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526539411] [2024-11-28 03:08:50,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526539411] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:08:50,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577197487] [2024-11-28 03:08:50,348 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:50,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:08:50,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:08:50,350 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:08:50,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 03:08:50,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:50,404 INFO L256 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:08:50,406 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:08:50,566 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-28 03:08:50,566 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:08:50,858 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-28 03:08:50,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577197487] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:08:50,858 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:08:50,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 7] total 25 [2024-11-28 03:08:50,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898047710] [2024-11-28 03:08:50,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:08:50,859 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-28 03:08:50,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:08:50,860 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-28 03:08:50,861 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=537, Unknown=0, NotChecked=0, Total=600 [2024-11-28 03:08:50,861 INFO L87 Difference]: Start difference. First operand 175 states and 209 transitions. Second operand has 25 states, 24 states have (on average 3.5) internal successors, (84), 22 states have internal predecessors, (84), 10 states have call successors, (15), 4 states have call predecessors, (15), 6 states have return successors, (14), 11 states have call predecessors, (14), 7 states have call successors, (14) [2024-11-28 03:08:51,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:08:51,796 INFO L93 Difference]: Finished difference Result 324 states and 383 transitions. [2024-11-28 03:08:51,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-28 03:08:51,796 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 3.5) internal successors, (84), 22 states have internal predecessors, (84), 10 states have call successors, (15), 4 states have call predecessors, (15), 6 states have return successors, (14), 11 states have call predecessors, (14), 7 states have call successors, (14) Word has length 74 [2024-11-28 03:08:51,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:08:51,799 INFO L225 Difference]: With dead ends: 324 [2024-11-28 03:08:51,799 INFO L226 Difference]: Without dead ends: 206 [2024-11-28 03:08:51,802 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 139 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=271, Invalid=1799, Unknown=0, NotChecked=0, Total=2070 [2024-11-28 03:08:51,802 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 151 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:08:51,802 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 268 Invalid, 817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:08:51,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2024-11-28 03:08:51,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 162. [2024-11-28 03:08:51,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 125 states have (on average 1.088) internal successors, (136), 129 states have internal predecessors, (136), 20 states have call successors, (20), 8 states have call predecessors, (20), 13 states have return successors, (33), 24 states have call predecessors, (33), 19 states have call successors, (33) [2024-11-28 03:08:51,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 189 transitions. [2024-11-28 03:08:51,830 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 189 transitions. Word has length 74 [2024-11-28 03:08:51,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:08:51,831 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 189 transitions. [2024-11-28 03:08:51,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 3.5) internal successors, (84), 22 states have internal predecessors, (84), 10 states have call successors, (15), 4 states have call predecessors, (15), 6 states have return successors, (14), 11 states have call predecessors, (14), 7 states have call successors, (14) [2024-11-28 03:08:51,831 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 189 transitions. [2024-11-28 03:08:51,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-28 03:08:51,832 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:08:51,832 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:08:51,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 03:08:52,036 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2024-11-28 03:08:52,037 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 03:08:52,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:08:52,037 INFO L85 PathProgramCache]: Analyzing trace with hash 196968042, now seen corresponding path program 1 times [2024-11-28 03:08:52,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:08:52,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599162192] [2024-11-28 03:08:52,038 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:52,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:08:52,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:52,194 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 14 proven. 29 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-28 03:08:52,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:08:52,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599162192] [2024-11-28 03:08:52,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599162192] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:08:52,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155984837] [2024-11-28 03:08:52,195 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:52,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:08:52,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:08:52,197 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:08:52,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 03:08:52,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:52,250 INFO L256 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 03:08:52,251 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:08:52,324 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 31 proven. 22 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 03:08:52,325 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:08:52,595 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 14 proven. 29 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-28 03:08:52,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155984837] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:08:52,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:08:52,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 13 [2024-11-28 03:08:52,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556248081] [2024-11-28 03:08:52,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:08:52,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 03:08:52,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:08:52,596 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 03:08:52,597 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:08:52,597 INFO L87 Difference]: Start difference. First operand 162 states and 189 transitions. Second operand has 13 states, 12 states have (on average 5.333333333333333) internal successors, (64), 11 states have internal predecessors, (64), 7 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-28 03:08:52,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:08:52,831 INFO L93 Difference]: Finished difference Result 275 states and 318 transitions. [2024-11-28 03:08:52,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 03:08:52,832 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.333333333333333) internal successors, (64), 11 states have internal predecessors, (64), 7 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 70 [2024-11-28 03:08:52,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:08:52,833 INFO L225 Difference]: With dead ends: 275 [2024-11-28 03:08:52,833 INFO L226 Difference]: Without dead ends: 169 [2024-11-28 03:08:52,834 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 134 SyntacticMatches, 7 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2024-11-28 03:08:52,835 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 89 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:08:52,835 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 213 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:08:52,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-11-28 03:08:52,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 162. [2024-11-28 03:08:52,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 125 states have (on average 1.088) internal successors, (136), 129 states have internal predecessors, (136), 20 states have call successors, (20), 8 states have call predecessors, (20), 13 states have return successors, (31), 24 states have call predecessors, (31), 19 states have call successors, (31) [2024-11-28 03:08:52,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 187 transitions. [2024-11-28 03:08:52,850 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 187 transitions. Word has length 70 [2024-11-28 03:08:52,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:08:52,851 INFO L471 AbstractCegarLoop]: Abstraction has 162 states and 187 transitions. [2024-11-28 03:08:52,851 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.333333333333333) internal successors, (64), 11 states have internal predecessors, (64), 7 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-28 03:08:52,851 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 187 transitions. [2024-11-28 03:08:52,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-28 03:08:52,853 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:08:52,853 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:08:52,863 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-28 03:08:53,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-28 03:08:53,057 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 03:08:53,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:08:53,058 INFO L85 PathProgramCache]: Analyzing trace with hash 1001511063, now seen corresponding path program 1 times [2024-11-28 03:08:53,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:08:53,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090525332] [2024-11-28 03:08:53,058 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:53,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:08:53,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:53,165 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-28 03:08:53,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:08:53,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090525332] [2024-11-28 03:08:53,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090525332] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:08:53,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379056516] [2024-11-28 03:08:53,166 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:53,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:08:53,166 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:08:53,168 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:08:53,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 03:08:53,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:53,221 INFO L256 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:08:53,223 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:08:53,275 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-28 03:08:53,275 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:08:53,414 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 18 proven. 23 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-28 03:08:53,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379056516] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:08:53,414 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:08:53,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 10 [2024-11-28 03:08:53,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347909138] [2024-11-28 03:08:53,415 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:08:53,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 03:08:53,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:08:53,416 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 03:08:53,416 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:08:53,416 INFO L87 Difference]: Start difference. First operand 162 states and 187 transitions. Second operand has 10 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-28 03:08:53,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:08:53,569 INFO L93 Difference]: Finished difference Result 258 states and 295 transitions. [2024-11-28 03:08:53,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 03:08:53,570 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 71 [2024-11-28 03:08:53,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:08:53,571 INFO L225 Difference]: With dead ends: 258 [2024-11-28 03:08:53,572 INFO L226 Difference]: Without dead ends: 163 [2024-11-28 03:08:53,572 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 137 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-11-28 03:08:53,574 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 66 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:08:53,574 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 214 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:08:53,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-11-28 03:08:53,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 160. [2024-11-28 03:08:53,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 123 states have (on average 1.089430894308943) internal successors, (134), 128 states have internal predecessors, (134), 20 states have call successors, (20), 8 states have call predecessors, (20), 13 states have return successors, (30), 23 states have call predecessors, (30), 19 states have call successors, (30) [2024-11-28 03:08:53,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 184 transitions. [2024-11-28 03:08:53,588 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 184 transitions. Word has length 71 [2024-11-28 03:08:53,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:08:53,588 INFO L471 AbstractCegarLoop]: Abstraction has 160 states and 184 transitions. [2024-11-28 03:08:53,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-28 03:08:53,588 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 184 transitions. [2024-11-28 03:08:53,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-11-28 03:08:53,589 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:08:53,590 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:08:53,598 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 03:08:53,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:08:53,794 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 03:08:53,794 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:08:53,794 INFO L85 PathProgramCache]: Analyzing trace with hash -350756515, now seen corresponding path program 1 times [2024-11-28 03:08:53,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:08:53,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715606772] [2024-11-28 03:08:53,795 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:53,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:08:53,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:54,036 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 17 proven. 38 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 03:08:54,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:08:54,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715606772] [2024-11-28 03:08:54,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715606772] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:08:54,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322365535] [2024-11-28 03:08:54,037 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:54,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:08:54,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:08:54,039 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:08:54,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 03:08:54,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:54,096 INFO L256 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 03:08:54,097 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:08:54,305 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-28 03:08:54,305 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:08:54,838 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-28 03:08:54,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1322365535] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:08:54,838 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:08:54,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 11] total 30 [2024-11-28 03:08:54,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194579801] [2024-11-28 03:08:54,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:08:54,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-28 03:08:54,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:08:54,840 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-28 03:08:54,840 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=788, Unknown=0, NotChecked=0, Total=870 [2024-11-28 03:08:54,841 INFO L87 Difference]: Start difference. First operand 160 states and 184 transitions. Second operand has 30 states, 29 states have (on average 3.5172413793103448) internal successors, (102), 27 states have internal predecessors, (102), 13 states have call successors, (16), 4 states have call predecessors, (16), 8 states have return successors, (16), 14 states have call predecessors, (16), 10 states have call successors, (16) [2024-11-28 03:08:56,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:08:56,142 INFO L93 Difference]: Finished difference Result 318 states and 373 transitions. [2024-11-28 03:08:56,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-28 03:08:56,142 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 29 states have (on average 3.5172413793103448) internal successors, (102), 27 states have internal predecessors, (102), 13 states have call successors, (16), 4 states have call predecessors, (16), 8 states have return successors, (16), 14 states have call predecessors, (16), 10 states have call successors, (16) Word has length 75 [2024-11-28 03:08:56,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:08:56,144 INFO L225 Difference]: With dead ends: 318 [2024-11-28 03:08:56,144 INFO L226 Difference]: Without dead ends: 192 [2024-11-28 03:08:56,146 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 143 SyntacticMatches, 3 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 770 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=471, Invalid=3311, Unknown=0, NotChecked=0, Total=3782 [2024-11-28 03:08:56,147 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 175 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 1077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:08:56,147 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 319 Invalid, 1077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 03:08:56,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-11-28 03:08:56,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 166. [2024-11-28 03:08:56,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 127 states have (on average 1.078740157480315) internal successors, (137), 133 states have internal predecessors, (137), 21 states have call successors, (21), 8 states have call predecessors, (21), 14 states have return successors, (33), 24 states have call predecessors, (33), 20 states have call successors, (33) [2024-11-28 03:08:56,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 191 transitions. [2024-11-28 03:08:56,180 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 191 transitions. Word has length 75 [2024-11-28 03:08:56,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:08:56,181 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 191 transitions. [2024-11-28 03:08:56,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 29 states have (on average 3.5172413793103448) internal successors, (102), 27 states have internal predecessors, (102), 13 states have call successors, (16), 4 states have call predecessors, (16), 8 states have return successors, (16), 14 states have call predecessors, (16), 10 states have call successors, (16) [2024-11-28 03:08:56,181 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 191 transitions. [2024-11-28 03:08:56,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-28 03:08:56,182 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:08:56,182 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:08:56,191 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 03:08:56,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:08:56,387 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 03:08:56,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:08:56,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1803732141, now seen corresponding path program 1 times [2024-11-28 03:08:56,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:08:56,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971867429] [2024-11-28 03:08:56,388 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:56,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:08:56,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:56,471 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 31 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-28 03:08:56,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:08:56,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971867429] [2024-11-28 03:08:56,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971867429] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:08:56,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811615965] [2024-11-28 03:08:56,473 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:56,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:08:56,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:08:56,475 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:08:56,479 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 03:08:56,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:56,535 INFO L256 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 03:08:56,537 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:08:56,653 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 33 proven. 33 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-28 03:08:56,654 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:08:56,926 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 33 proven. 33 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-28 03:08:56,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811615965] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:08:56,927 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:08:56,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 11, 11] total 15 [2024-11-28 03:08:56,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919280695] [2024-11-28 03:08:56,927 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:08:56,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 03:08:56,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:08:56,928 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 03:08:56,929 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:08:56,930 INFO L87 Difference]: Start difference. First operand 166 states and 191 transitions. Second operand has 15 states, 14 states have (on average 5.642857142857143) internal successors, (79), 13 states have internal predecessors, (79), 9 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 7 states have call successors, (12) [2024-11-28 03:08:57,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:08:57,177 INFO L93 Difference]: Finished difference Result 273 states and 319 transitions. [2024-11-28 03:08:57,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 03:08:57,178 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 5.642857142857143) internal successors, (79), 13 states have internal predecessors, (79), 9 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 7 states have call successors, (12) Word has length 88 [2024-11-28 03:08:57,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:08:57,179 INFO L225 Difference]: With dead ends: 273 [2024-11-28 03:08:57,180 INFO L226 Difference]: Without dead ends: 153 [2024-11-28 03:08:57,180 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 163 SyntacticMatches, 7 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2024-11-28 03:08:57,181 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 96 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:08:57,181 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 233 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:08:57,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-11-28 03:08:57,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 148. [2024-11-28 03:08:57,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 113 states have (on average 1.0707964601769913) internal successors, (121), 119 states have internal predecessors, (121), 18 states have call successors, (18), 8 states have call predecessors, (18), 13 states have return successors, (25), 20 states have call predecessors, (25), 17 states have call successors, (25) [2024-11-28 03:08:57,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 164 transitions. [2024-11-28 03:08:57,194 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 164 transitions. Word has length 88 [2024-11-28 03:08:57,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:08:57,194 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 164 transitions. [2024-11-28 03:08:57,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 5.642857142857143) internal successors, (79), 13 states have internal predecessors, (79), 9 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 7 states have call successors, (12) [2024-11-28 03:08:57,195 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 164 transitions. [2024-11-28 03:08:57,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-28 03:08:57,196 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:08:57,196 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:08:57,205 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 03:08:57,396 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:08:57,397 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 03:08:57,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:08:57,397 INFO L85 PathProgramCache]: Analyzing trace with hash -2016411688, now seen corresponding path program 2 times [2024-11-28 03:08:57,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:08:57,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634892368] [2024-11-28 03:08:57,398 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:08:57,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:08:57,412 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:08:57,412 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:08:57,719 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 8 proven. 27 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-28 03:08:57,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:08:57,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634892368] [2024-11-28 03:08:57,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634892368] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:08:57,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886961881] [2024-11-28 03:08:57,720 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:08:57,720 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:08:57,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:08:57,724 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:08:57,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 03:08:57,780 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:08:57,780 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:08:57,781 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 03:08:57,783 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:08:58,035 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 10 proven. 25 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-28 03:08:58,035 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:08:58,674 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 14 proven. 21 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-28 03:08:58,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886961881] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:08:58,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:08:58,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 34 [2024-11-28 03:08:58,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770083111] [2024-11-28 03:08:58,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:08:58,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-28 03:08:58,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:08:58,676 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-28 03:08:58,677 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1040, Unknown=0, NotChecked=0, Total=1190 [2024-11-28 03:08:58,677 INFO L87 Difference]: Start difference. First operand 148 states and 164 transitions. Second operand has 35 states, 34 states have (on average 2.7941176470588234) internal successors, (95), 35 states have internal predecessors, (95), 10 states have call successors, (12), 1 states have call predecessors, (12), 13 states have return successors, (21), 21 states have call predecessors, (21), 10 states have call successors, (21) [2024-11-28 03:08:59,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:08:59,116 INFO L93 Difference]: Finished difference Result 183 states and 210 transitions. [2024-11-28 03:08:59,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-28 03:08:59,116 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.7941176470588234) internal successors, (95), 35 states have internal predecessors, (95), 10 states have call successors, (12), 1 states have call predecessors, (12), 13 states have return successors, (21), 21 states have call predecessors, (21), 10 states have call successors, (21) Word has length 89 [2024-11-28 03:08:59,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:08:59,118 INFO L225 Difference]: With dead ends: 183 [2024-11-28 03:08:59,118 INFO L226 Difference]: Without dead ends: 181 [2024-11-28 03:08:59,119 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 154 SyntacticMatches, 6 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 588 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=259, Invalid=1721, Unknown=0, NotChecked=0, Total=1980 [2024-11-28 03:08:59,119 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 21 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 587 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:08:59,120 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 587 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:08:59,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2024-11-28 03:08:59,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 146. [2024-11-28 03:08:59,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 113 states have (on average 1.0530973451327434) internal successors, (119), 117 states have internal predecessors, (119), 18 states have call successors, (18), 8 states have call predecessors, (18), 13 states have return successors, (25), 20 states have call predecessors, (25), 17 states have call successors, (25) [2024-11-28 03:08:59,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 162 transitions. [2024-11-28 03:08:59,133 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 162 transitions. Word has length 89 [2024-11-28 03:08:59,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:08:59,134 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 162 transitions. [2024-11-28 03:08:59,134 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.7941176470588234) internal successors, (95), 35 states have internal predecessors, (95), 10 states have call successors, (12), 1 states have call predecessors, (12), 13 states have return successors, (21), 21 states have call predecessors, (21), 10 states have call successors, (21) [2024-11-28 03:08:59,134 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 162 transitions. [2024-11-28 03:08:59,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-28 03:08:59,135 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:08:59,135 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:08:59,144 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-28 03:08:59,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:08:59,340 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 03:08:59,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:08:59,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1915747185, now seen corresponding path program 1 times [2024-11-28 03:08:59,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:08:59,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318912774] [2024-11-28 03:08:59,341 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:59,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:08:59,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:59,679 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-28 03:08:59,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:08:59,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318912774] [2024-11-28 03:08:59,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318912774] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:08:59,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933346242] [2024-11-28 03:08:59,680 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:08:59,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:08:59,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:08:59,682 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:08:59,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 03:08:59,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:08:59,754 INFO L256 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-28 03:08:59,756 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:08:59,941 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-28 03:08:59,941 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:09:00,548 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 23 proven. 13 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-28 03:09:00,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933346242] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:09:00,549 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:09:00,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 16] total 33 [2024-11-28 03:09:00,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748811375] [2024-11-28 03:09:00,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:09:00,550 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-28 03:09:00,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:09:00,551 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-28 03:09:00,551 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=970, Unknown=0, NotChecked=0, Total=1122 [2024-11-28 03:09:00,552 INFO L87 Difference]: Start difference. First operand 146 states and 162 transitions. Second operand has 34 states, 33 states have (on average 2.8181818181818183) internal successors, (93), 34 states have internal predecessors, (93), 9 states have call successors, (11), 1 states have call predecessors, (11), 12 states have return successors, (20), 20 states have call predecessors, (20), 9 states have call successors, (20) [2024-11-28 03:09:00,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:09:00,761 INFO L93 Difference]: Finished difference Result 167 states and 184 transitions. [2024-11-28 03:09:00,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-28 03:09:00,762 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 33 states have (on average 2.8181818181818183) internal successors, (93), 34 states have internal predecessors, (93), 9 states have call successors, (11), 1 states have call predecessors, (11), 12 states have return successors, (20), 20 states have call predecessors, (20), 9 states have call successors, (20) Word has length 90 [2024-11-28 03:09:00,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:09:00,763 INFO L225 Difference]: With dead ends: 167 [2024-11-28 03:09:00,763 INFO L226 Difference]: Without dead ends: 152 [2024-11-28 03:09:00,764 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 157 SyntacticMatches, 6 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 626 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=194, Invalid=1212, Unknown=0, NotChecked=0, Total=1406 [2024-11-28 03:09:00,765 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 12 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:09:00,765 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 471 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:09:00,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-11-28 03:09:00,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 120. [2024-11-28 03:09:00,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 93 states have (on average 1.043010752688172) internal successors, (97), 97 states have internal predecessors, (97), 15 states have call successors, (15), 8 states have call predecessors, (15), 11 states have return successors, (17), 14 states have call predecessors, (17), 14 states have call successors, (17) [2024-11-28 03:09:00,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 129 transitions. [2024-11-28 03:09:00,777 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 129 transitions. Word has length 90 [2024-11-28 03:09:00,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:09:00,778 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 129 transitions. [2024-11-28 03:09:00,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 33 states have (on average 2.8181818181818183) internal successors, (93), 34 states have internal predecessors, (93), 9 states have call successors, (11), 1 states have call predecessors, (11), 12 states have return successors, (20), 20 states have call predecessors, (20), 9 states have call successors, (20) [2024-11-28 03:09:00,778 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 129 transitions. [2024-11-28 03:09:00,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-28 03:09:00,780 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:09:00,780 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-28 03:09:00,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-28 03:09:00,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:09:00,981 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 03:09:00,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:09:00,982 INFO L85 PathProgramCache]: Analyzing trace with hash 324878117, now seen corresponding path program 1 times [2024-11-28 03:09:00,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:09:00,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883532695] [2024-11-28 03:09:00,982 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:09:00,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:09:00,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:09:01,130 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 68 proven. 27 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2024-11-28 03:09:01,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:09:01,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883532695] [2024-11-28 03:09:01,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883532695] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:09:01,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912218542] [2024-11-28 03:09:01,132 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:09:01,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:09:01,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:09:01,135 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:09:01,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 03:09:01,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:09:01,218 INFO L256 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:09:01,220 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:09:01,269 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 68 proven. 27 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2024-11-28 03:09:01,269 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:09:01,518 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 68 proven. 27 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2024-11-28 03:09:01,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [912218542] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:09:01,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:09:01,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2024-11-28 03:09:01,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749197424] [2024-11-28 03:09:01,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:09:01,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 03:09:01,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:09:01,520 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 03:09:01,520 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-28 03:09:01,520 INFO L87 Difference]: Start difference. First operand 120 states and 129 transitions. Second operand has 11 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 6 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-28 03:09:01,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:09:01,662 INFO L93 Difference]: Finished difference Result 133 states and 142 transitions. [2024-11-28 03:09:01,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 03:09:01,664 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 6 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) Word has length 124 [2024-11-28 03:09:01,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:09:01,665 INFO L225 Difference]: With dead ends: 133 [2024-11-28 03:09:01,665 INFO L226 Difference]: Without dead ends: 118 [2024-11-28 03:09:01,665 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 258 GetRequests, 242 SyntacticMatches, 5 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-11-28 03:09:01,666 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 60 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:09:01,666 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 112 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:09:01,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-28 03:09:01,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2024-11-28 03:09:01,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 92 states have (on average 1.0326086956521738) internal successors, (95), 95 states have internal predecessors, (95), 15 states have call successors, (15), 8 states have call predecessors, (15), 10 states have return successors, (16), 14 states have call predecessors, (16), 14 states have call successors, (16) [2024-11-28 03:09:01,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 126 transitions. [2024-11-28 03:09:01,677 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 126 transitions. Word has length 124 [2024-11-28 03:09:01,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:09:01,677 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 126 transitions. [2024-11-28 03:09:01,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 6 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-28 03:09:01,678 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 126 transitions. [2024-11-28 03:09:01,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-28 03:09:01,679 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:09:01,679 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1] [2024-11-28 03:09:01,689 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-11-28 03:09:01,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:09:01,880 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 03:09:01,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:09:01,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1419353795, now seen corresponding path program 2 times [2024-11-28 03:09:01,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:09:01,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973976155] [2024-11-28 03:09:01,881 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:09:01,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:09:01,904 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:09:01,905 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:09:02,509 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 45 proven. 85 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2024-11-28 03:09:02,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:09:02,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973976155] [2024-11-28 03:09:02,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973976155] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:09:02,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796334523] [2024-11-28 03:09:02,510 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:09:02,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:09:02,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:09:02,512 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:09:02,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 03:09:02,593 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:09:02,593 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:09:02,594 INFO L256 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-28 03:09:02,597 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:09:02,886 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 45 proven. 59 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-28 03:09:02,886 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:09:04,483 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 74 proven. 54 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2024-11-28 03:09:04,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796334523] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:09:04,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:09:04,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 18, 22] total 44 [2024-11-28 03:09:04,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133263068] [2024-11-28 03:09:04,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:09:04,485 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-28 03:09:04,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:09:04,486 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-28 03:09:04,486 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=1724, Unknown=0, NotChecked=0, Total=1980 [2024-11-28 03:09:04,490 INFO L87 Difference]: Start difference. First operand 118 states and 126 transitions. Second operand has 45 states, 44 states have (on average 2.727272727272727) internal successors, (120), 45 states have internal predecessors, (120), 11 states have call successors, (13), 1 states have call predecessors, (13), 15 states have return successors, (28), 28 states have call predecessors, (28), 11 states have call successors, (28) [2024-11-28 03:09:04,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:09:04,756 INFO L93 Difference]: Finished difference Result 143 states and 155 transitions. [2024-11-28 03:09:04,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-28 03:09:04,756 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 2.727272727272727) internal successors, (120), 45 states have internal predecessors, (120), 11 states have call successors, (13), 1 states have call predecessors, (13), 15 states have return successors, (28), 28 states have call predecessors, (28), 11 states have call successors, (28) Word has length 143 [2024-11-28 03:09:04,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:09:04,757 INFO L225 Difference]: With dead ends: 143 [2024-11-28 03:09:04,757 INFO L226 Difference]: Without dead ends: 0 [2024-11-28 03:09:04,759 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 257 SyntacticMatches, 13 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1362 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=283, Invalid=1879, Unknown=0, NotChecked=0, Total=2162 [2024-11-28 03:09:04,759 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 4 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:09:04,760 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 651 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:09:04,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-28 03:09:04,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-28 03:09:04,760 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) [2024-11-28 03:09:04,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-28 03:09:04,761 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 143 [2024-11-28 03:09:04,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:09:04,761 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-28 03:09:04,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 2.727272727272727) internal successors, (120), 45 states have internal predecessors, (120), 11 states have call successors, (13), 1 states have call predecessors, (13), 15 states have return successors, (28), 28 states have call predecessors, (28), 11 states have call successors, (28) [2024-11-28 03:09:04,761 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-28 03:09:04,762 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-28 03:09:04,764 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 12 remaining) [2024-11-28 03:09:04,765 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2024-11-28 03:09:04,765 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2024-11-28 03:09:04,765 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2024-11-28 03:09:04,766 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining) [2024-11-28 03:09:04,766 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 12 remaining) [2024-11-28 03:09:04,766 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 12 remaining) [2024-11-28 03:09:04,766 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 12 remaining) [2024-11-28 03:09:04,766 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2024-11-28 03:09:04,766 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2024-11-28 03:09:04,766 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2024-11-28 03:09:04,767 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2024-11-28 03:09:04,777 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-28 03:09:04,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-28 03:09:04,973 INFO L422 BasicCegarLoop]: Path program histogram: [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] [2024-11-28 03:09:04,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-28 03:09:09,685 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 03:09:09,692 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:09:09 BoogieIcfgContainer [2024-11-28 03:09:09,692 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 03:09:09,693 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 03:09:09,693 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 03:09:09,693 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 03:09:09,694 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:08:40" (3/4) ... [2024-11-28 03:09:09,696 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-28 03:09:09,702 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo2 [2024-11-28 03:09:09,702 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo1 [2024-11-28 03:09:09,706 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-28 03:09:09,706 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-28 03:09:09,706 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-28 03:09:09,706 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-28 03:09:09,789 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 03:09:09,789 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-28 03:09:09,790 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 03:09:09,791 INFO L158 Benchmark]: Toolchain (without parser) took 30203.48ms. Allocated memory was 117.4MB in the beginning and 545.3MB in the end (delta: 427.8MB). Free memory was 93.0MB in the beginning and 508.7MB in the end (delta: -415.7MB). Peak memory consumption was 7.4MB. Max. memory is 16.1GB. [2024-11-28 03:09:09,791 INFO L158 Benchmark]: CDTParser took 1.43ms. Allocated memory is still 117.4MB. Free memory is still 74.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:09:09,791 INFO L158 Benchmark]: CACSL2BoogieTranslator took 252.39ms. Allocated memory is still 117.4MB. Free memory was 93.0MB in the beginning and 82.4MB in the end (delta: 10.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 03:09:09,791 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.24ms. Allocated memory is still 117.4MB. Free memory was 82.4MB in the beginning and 81.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:09:09,792 INFO L158 Benchmark]: Boogie Preprocessor took 33.28ms. Allocated memory is still 117.4MB. Free memory was 81.3MB in the beginning and 80.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:09:09,792 INFO L158 Benchmark]: RCFGBuilder took 336.30ms. Allocated memory is still 117.4MB. Free memory was 80.0MB in the beginning and 68.5MB in the end (delta: 11.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 03:09:09,792 INFO L158 Benchmark]: TraceAbstraction took 29437.39ms. Allocated memory was 117.4MB in the beginning and 545.3MB in the end (delta: 427.8MB). Free memory was 67.9MB in the beginning and 512.7MB in the end (delta: -444.8MB). Peak memory consumption was 244.1MB. Max. memory is 16.1GB. [2024-11-28 03:09:09,792 INFO L158 Benchmark]: Witness Printer took 97.11ms. Allocated memory is still 545.3MB. Free memory was 512.7MB in the beginning and 508.7MB in the end (delta: 4.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 03:09:09,793 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.43ms. Allocated memory is still 117.4MB. Free memory is still 74.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 252.39ms. Allocated memory is still 117.4MB. Free memory was 93.0MB in the beginning and 82.4MB in the end (delta: 10.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.24ms. Allocated memory is still 117.4MB. Free memory was 82.4MB in the beginning and 81.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 33.28ms. Allocated memory is still 117.4MB. Free memory was 81.3MB in the beginning and 80.0MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 336.30ms. Allocated memory is still 117.4MB. Free memory was 80.0MB in the beginning and 68.5MB in the end (delta: 11.5MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 29437.39ms. Allocated memory was 117.4MB in the beginning and 545.3MB in the end (delta: 427.8MB). Free memory was 67.9MB in the beginning and 512.7MB in the end (delta: -444.8MB). Peak memory consumption was 244.1MB. Max. memory is 16.1GB. * Witness Printer took 97.11ms. Allocated memory is still 545.3MB. Free memory was 512.7MB in the beginning and 508.7MB in the end (delta: 4.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 25]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 53 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 24.6s, OverallIterations: 28, TraceHistogramMax: 8, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 7.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1443 SdHoareTripleChecker+Valid, 4.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1387 mSDsluCounter, 6426 SdHoareTripleChecker+Invalid, 3.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5417 mSDsCounter, 391 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5823 IncrementalHoareTripleChecker+Invalid, 6214 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 391 mSolverCounterUnsat, 1009 mSDtfsCounter, 5823 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2434 GetRequests, 1921 SyntacticMatches, 68 SemanticMatches, 445 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4444 ImplicationChecksByTransitivity, 6.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=175occurred in iteration=18, InterpolantAutomatonStates: 334, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 28 MinimizatonAttempts, 309 StatesRemovedByMinimization, 26 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 11.8s InterpolantComputationTime, 2649 NumberOfCodeBlocks, 2649 NumberOfCodeBlocksAsserted, 50 NumberOfCheckSat, 3556 ConstructedInterpolants, 0 QuantifiedInterpolants, 7407 SizeOfPredicates, 25 NumberOfNonLiveVariables, 2398 ConjunctsInSsa, 177 ConjunctsInUnsatCore, 56 InterpolantComputations, 16 PerfectInterpolantSequences, 3084/3920 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, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-28 03:09:09,819 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_91f727fd-82bd-42ca-b42f-384e2205a7d0/bin/uautomizer-verify-aQ6SnzHsRB/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