./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive-simple/fibo_2calls_6-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/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_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/fibo_2calls_6-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/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_c3c40460-a500-4bb8-a2d4-d755488251af/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 31de98bafea1eb3233157f378400eba30060b6561e9e0a6257ecfebe8e53877a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:06:49,875 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:06:49,975 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-28 02:06:49,983 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:06:49,984 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:06:50,017 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:06:50,018 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:06:50,018 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:06:50,018 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:06:50,018 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:06:50,019 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:06:50,019 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:06:50,019 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:06:50,019 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:06:50,019 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:06:50,020 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:06:50,020 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:06:50,020 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:06:50,020 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:06:50,020 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:06:50,020 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:06:50,021 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:06:50,021 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:06:50,021 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:06:50,021 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-28 02:06:50,021 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 02:06:50,021 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:06:50,022 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:06:50,022 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:06:50,022 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:06:50,022 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:06:50,022 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:06:50,022 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:06:50,022 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:06:50,022 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:06:50,022 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:06:50,022 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:06:50,023 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:06:50,023 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:06:50,023 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:06:50,023 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:06:50,023 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:06:50,023 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:06:50,023 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:06:50,023 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:06:50,023 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:06:50,023 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:06:50,023 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:06:50,023 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:06:50,024 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:06:50,024 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_c3c40460-a500-4bb8-a2d4-d755488251af/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 -> 31de98bafea1eb3233157f378400eba30060b6561e9e0a6257ecfebe8e53877a [2024-11-28 02:06:50,312 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:06:50,321 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:06:50,323 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:06:50,324 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:06:50,324 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:06:50,326 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/recursive-simple/fibo_2calls_6-2.c [2024-11-28 02:06:53,278 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/data/5e1a34aa8/269c0edb95ea40ae858ad17febf0ba6e/FLAG932e4c57a [2024-11-28 02:06:53,502 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:06:53,502 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/sv-benchmarks/c/recursive-simple/fibo_2calls_6-2.c [2024-11-28 02:06:53,510 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/data/5e1a34aa8/269c0edb95ea40ae858ad17febf0ba6e/FLAG932e4c57a [2024-11-28 02:06:53,524 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/data/5e1a34aa8/269c0edb95ea40ae858ad17febf0ba6e [2024-11-28 02:06:53,526 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:06:53,527 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:06:53,529 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:06:53,529 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:06:53,533 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:06:53,534 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:06:53" (1/1) ... [2024-11-28 02:06:53,535 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d6150f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:53, skipping insertion in model container [2024-11-28 02:06:53,535 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:06:53" (1/1) ... [2024-11-28 02:06:53,548 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:06:53,721 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:06:53,732 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:06:53,750 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:06:53,768 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:06:53,769 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:53 WrapperNode [2024-11-28 02:06:53,769 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:06:53,770 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:06:53,770 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:06:53,771 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:06:53,781 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:53" (1/1) ... [2024-11-28 02:06:53,787 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:53" (1/1) ... [2024-11-28 02:06:53,804 INFO L138 Inliner]: procedures = 14, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 21 [2024-11-28 02:06:53,804 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:06:53,805 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:06:53,805 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:06:53,805 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:06:53,816 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:53" (1/1) ... [2024-11-28 02:06:53,817 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:53" (1/1) ... [2024-11-28 02:06:53,821 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:53" (1/1) ... [2024-11-28 02:06:53,841 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 02:06:53,841 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:53" (1/1) ... [2024-11-28 02:06:53,841 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:53" (1/1) ... [2024-11-28 02:06:53,843 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:53" (1/1) ... [2024-11-28 02:06:53,846 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:53" (1/1) ... [2024-11-28 02:06:53,850 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:53" (1/1) ... [2024-11-28 02:06:53,855 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:53" (1/1) ... [2024-11-28 02:06:53,856 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:53" (1/1) ... [2024-11-28 02:06:53,857 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:06:53,858 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:06:53,858 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:06:53,859 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:06:53,859 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:53" (1/1) ... [2024-11-28 02:06:53,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:06:53,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:06:53,899 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:06:53,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:06:53,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:06:53,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:06:53,932 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2024-11-28 02:06:53,932 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2024-11-28 02:06:53,933 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2024-11-28 02:06:53,933 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2024-11-28 02:06:53,933 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:06:53,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:06:53,987 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:06:53,989 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:06:54,181 INFO L? ?]: Removed 24 outVars from TransFormulas that were not future-live. [2024-11-28 02:06:54,182 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:06:54,203 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:06:54,205 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-28 02:06:54,206 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:06:54 BoogieIcfgContainer [2024-11-28 02:06:54,207 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:06:54,210 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:06:54,211 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:06:54,218 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:06:54,218 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:06:53" (1/3) ... [2024-11-28 02:06:54,219 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79b8d0a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:06:54, skipping insertion in model container [2024-11-28 02:06:54,219 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:06:53" (2/3) ... [2024-11-28 02:06:54,219 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79b8d0a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:06:54, skipping insertion in model container [2024-11-28 02:06:54,220 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:06:54" (3/3) ... [2024-11-28 02:06:54,221 INFO L128 eAbstractionObserver]: Analyzing ICFG fibo_2calls_6-2.c [2024-11-28 02:06:54,242 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:06:54,244 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG fibo_2calls_6-2.c that has 3 procedures, 53 locations, 1 initial locations, 0 loop locations, and 12 error locations. [2024-11-28 02:06:54,314 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:06:54,330 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;@2cf9b3c1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:06:54,330 INFO L334 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2024-11-28 02:06:54,335 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 02:06:54,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-28 02:06:54,341 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:06:54,342 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:06:54,342 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 02:06:54,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:06:54,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1867028009, now seen corresponding path program 1 times [2024-11-28 02:06:54,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:06:54,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536979676] [2024-11-28 02:06:54,359 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:06:54,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:06:54,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:06:54,556 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 02:06:54,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:06:54,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536979676] [2024-11-28 02:06:54,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536979676] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:06:54,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:06:54,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:06:54,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558561351] [2024-11-28 02:06:54,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:06:54,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:06:54,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:06:54,589 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:06:54,590 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:06:54,592 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 02:06:54,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:06:54,661 INFO L93 Difference]: Finished difference Result 59 states and 67 transitions. [2024-11-28 02:06:54,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:06:54,668 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 02:06:54,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:06:54,676 INFO L225 Difference]: With dead ends: 59 [2024-11-28 02:06:54,676 INFO L226 Difference]: Without dead ends: 45 [2024-11-28 02:06:54,679 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 02:06:54,686 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, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:06:54,686 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 92 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:06:54,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-28 02:06:54,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2024-11-28 02:06:54,731 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 02:06:54,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2024-11-28 02:06:54,741 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 7 [2024-11-28 02:06:54,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:06:54,742 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2024-11-28 02:06:54,742 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 02:06:54,742 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2024-11-28 02:06:54,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-28 02:06:54,744 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:06:54,744 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:06:54,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:06:54,745 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 02:06:54,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:06:54,746 INFO L85 PathProgramCache]: Analyzing trace with hash 2043293518, now seen corresponding path program 1 times [2024-11-28 02:06:54,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:06:54,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170457214] [2024-11-28 02:06:54,746 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:06:54,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:06:54,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:06:54,885 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 02:06:54,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:06:54,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170457214] [2024-11-28 02:06:54,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170457214] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:06:54,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:06:54,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:06:54,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845003453] [2024-11-28 02:06:54,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:06:54,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:06:54,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:06:54,889 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:06:54,889 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:06:54,889 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 02:06:54,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:06:54,990 INFO L93 Difference]: Finished difference Result 64 states and 72 transitions. [2024-11-28 02:06:54,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:06:54,991 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 02:06:54,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:06:54,992 INFO L225 Difference]: With dead ends: 64 [2024-11-28 02:06:54,992 INFO L226 Difference]: Without dead ends: 58 [2024-11-28 02:06:54,992 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 02:06:54,993 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 26 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 02:06:54,993 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 02:06:54,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-28 02:06:55,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2024-11-28 02:06:55,005 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 02:06:55,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2024-11-28 02:06:55,011 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 8 [2024-11-28 02:06:55,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:06:55,011 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2024-11-28 02:06:55,011 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 02:06:55,011 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2024-11-28 02:06:55,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-28 02:06:55,012 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:06:55,015 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:06:55,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:06:55,015 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 02:06:55,016 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:06:55,016 INFO L85 PathProgramCache]: Analyzing trace with hash -749725533, now seen corresponding path program 1 times [2024-11-28 02:06:55,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:06:55,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216840350] [2024-11-28 02:06:55,016 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:06:55,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:06:55,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:06:55,075 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 02:06:55,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:06:55,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216840350] [2024-11-28 02:06:55,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216840350] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:06:55,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:06:55,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:06:55,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315888197] [2024-11-28 02:06:55,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:06:55,078 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 02:06:55,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:06:55,078 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 02:06:55,079 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 02:06:55,080 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 02:06:55,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:06:55,119 INFO L93 Difference]: Finished difference Result 58 states and 70 transitions. [2024-11-28 02:06:55,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 02:06:55,119 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 02:06:55,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:06:55,120 INFO L225 Difference]: With dead ends: 58 [2024-11-28 02:06:55,121 INFO L226 Difference]: Without dead ends: 56 [2024-11-28 02:06:55,123 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 02:06:55,124 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, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:06:55,124 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 72 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:06:55,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-28 02:06:55,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2024-11-28 02:06:55,139 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 02:06:55,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2024-11-28 02:06:55,144 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 13 [2024-11-28 02:06:55,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:06:55,144 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2024-11-28 02:06:55,144 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 02:06:55,144 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2024-11-28 02:06:55,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-28 02:06:55,145 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:06:55,145 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:06:55,145 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:06:55,145 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 02:06:55,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:06:55,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1766654982, now seen corresponding path program 1 times [2024-11-28 02:06:55,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:06:55,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322363705] [2024-11-28 02:06:55,148 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:06:55,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:06:55,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:06:55,296 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 02:06:55,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:06:55,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322363705] [2024-11-28 02:06:55,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322363705] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:06:55,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:06:55,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 02:06:55,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252234996] [2024-11-28 02:06:55,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:06:55,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:06:55,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:06:55,298 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:06:55,298 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:06:55,299 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 02:06:55,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:06:55,522 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2024-11-28 02:06:55,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:06:55,523 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 02:06:55,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:06:55,524 INFO L225 Difference]: With dead ends: 58 [2024-11-28 02:06:55,524 INFO L226 Difference]: Without dead ends: 54 [2024-11-28 02:06:55,524 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 02:06:55,527 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 51 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 02:06:55,528 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 02:06:55,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-11-28 02:06:55,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2024-11-28 02:06:55,545 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 02:06:55,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2024-11-28 02:06:55,547 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 14 [2024-11-28 02:06:55,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:06:55,547 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2024-11-28 02:06:55,547 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 02:06:55,547 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2024-11-28 02:06:55,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-28 02:06:55,548 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:06:55,548 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 02:06:55,548 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 02:06:55,548 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 02:06:55,552 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:06:55,552 INFO L85 PathProgramCache]: Analyzing trace with hash 2097999453, now seen corresponding path program 1 times [2024-11-28 02:06:55,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:06:55,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881286190] [2024-11-28 02:06:55,553 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:06:55,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:06:55,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:06:55,792 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 02:06:55,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:06:55,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881286190] [2024-11-28 02:06:55,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [881286190] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:06:55,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:06:55,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:06:55,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459437760] [2024-11-28 02:06:55,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:06:55,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:06:55,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:06:55,794 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:06:55,794 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:06:55,795 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 02:06:55,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:06:55,868 INFO L93 Difference]: Finished difference Result 74 states and 94 transitions. [2024-11-28 02:06:55,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:06:55,871 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 02:06:55,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:06:55,872 INFO L225 Difference]: With dead ends: 74 [2024-11-28 02:06:55,873 INFO L226 Difference]: Without dead ends: 69 [2024-11-28 02:06:55,873 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 02:06:55,874 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 02:06:55,876 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 02:06:55,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-28 02:06:55,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 63. [2024-11-28 02:06:55,895 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 02:06:55,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 78 transitions. [2024-11-28 02:06:55,901 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 78 transitions. Word has length 23 [2024-11-28 02:06:55,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:06:55,901 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 78 transitions. [2024-11-28 02:06:55,901 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 02:06:55,902 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 78 transitions. [2024-11-28 02:06:55,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-28 02:06:55,903 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:06:55,903 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 02:06:55,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 02:06:55,903 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 02:06:55,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:06:55,904 INFO L85 PathProgramCache]: Analyzing trace with hash 624421350, now seen corresponding path program 1 times [2024-11-28 02:06:55,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:06:55,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067939311] [2024-11-28 02:06:55,906 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:06:55,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:06:55,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:06:56,073 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 02:06:56,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:06:56,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067939311] [2024-11-28 02:06:56,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067939311] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:06:56,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863424283] [2024-11-28 02:06:56,073 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:06:56,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:06:56,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:06:56,082 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:06:56,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:06:56,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:06:56,137 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 02:06:56,142 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:06:56,263 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 02:06:56,264 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:06:56,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863424283] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:06:56,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:06:56,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 11 [2024-11-28 02:06:56,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088699579] [2024-11-28 02:06:56,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:06:56,269 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 02:06:56,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:06:56,270 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 02:06:56,271 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:06:56,272 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 02:06:56,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:06:56,449 INFO L93 Difference]: Finished difference Result 113 states and 140 transitions. [2024-11-28 02:06:56,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:06:56,450 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 02:06:56,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:06:56,451 INFO L225 Difference]: With dead ends: 113 [2024-11-28 02:06:56,452 INFO L226 Difference]: Without dead ends: 63 [2024-11-28 02:06:56,453 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 02:06:56,454 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 02:06:56,455 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 02:06:56,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-28 02:06:56,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59. [2024-11-28 02:06:56,470 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 02:06:56,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 71 transitions. [2024-11-28 02:06:56,474 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 71 transitions. Word has length 24 [2024-11-28 02:06:56,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:06:56,474 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 71 transitions. [2024-11-28 02:06:56,474 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 02:06:56,475 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 71 transitions. [2024-11-28 02:06:56,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-28 02:06:56,475 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:06:56,475 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 02:06:56,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 02:06:56,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:06:56,676 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 02:06:56,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:06:56,676 INFO L85 PathProgramCache]: Analyzing trace with hash 120521327, now seen corresponding path program 1 times [2024-11-28 02:06:56,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:06:56,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23897903] [2024-11-28 02:06:56,677 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:06:56,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:06:56,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:06:56,775 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 02:06:56,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:06:56,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23897903] [2024-11-28 02:06:56,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23897903] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:06:56,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:06:56,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:06:56,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927628291] [2024-11-28 02:06:56,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:06:56,776 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:06:56,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:06:56,777 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:06:56,777 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:06:56,777 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 02:06:56,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:06:56,837 INFO L93 Difference]: Finished difference Result 83 states and 108 transitions. [2024-11-28 02:06:56,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:06:56,838 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 02:06:56,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:06:56,839 INFO L225 Difference]: With dead ends: 83 [2024-11-28 02:06:56,840 INFO L226 Difference]: Without dead ends: 78 [2024-11-28 02:06:56,840 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 02:06:56,841 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, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:06:56,841 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 151 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:06:56,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2024-11-28 02:06:56,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 69. [2024-11-28 02:06:56,854 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 02:06:56,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 89 transitions. [2024-11-28 02:06:56,856 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 89 transitions. Word has length 25 [2024-11-28 02:06:56,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:06:56,856 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 89 transitions. [2024-11-28 02:06:56,856 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 02:06:56,857 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 89 transitions. [2024-11-28 02:06:56,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-28 02:06:56,858 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:06:56,858 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 02:06:56,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 02:06:56,858 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 02:06:56,859 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:06:56,859 INFO L85 PathProgramCache]: Analyzing trace with hash -473230649, now seen corresponding path program 1 times [2024-11-28 02:06:56,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:06:56,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404153445] [2024-11-28 02:06:56,859 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:06:56,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:06:56,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:06:56,935 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 02:06:56,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:06:56,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404153445] [2024-11-28 02:06:56,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404153445] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:06:56,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:06:56,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:06:56,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617060917] [2024-11-28 02:06:56,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:06:56,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:06:56,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:06:56,936 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:06:56,937 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:06:56,937 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 02:06:56,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:06:56,986 INFO L93 Difference]: Finished difference Result 83 states and 108 transitions. [2024-11-28 02:06:56,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:06:56,987 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 02:06:56,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:06:56,988 INFO L225 Difference]: With dead ends: 83 [2024-11-28 02:06:56,988 INFO L226 Difference]: Without dead ends: 81 [2024-11-28 02:06:56,989 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 02:06:56,989 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 02:06:56,989 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 02:06:56,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-28 02:06:56,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 78. [2024-11-28 02:06:57,000 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 02:06:57,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 101 transitions. [2024-11-28 02:06:57,002 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 101 transitions. Word has length 29 [2024-11-28 02:06:57,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:06:57,002 INFO L471 AbstractCegarLoop]: Abstraction has 78 states and 101 transitions. [2024-11-28 02:06:57,002 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 02:06:57,002 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 101 transitions. [2024-11-28 02:06:57,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-28 02:06:57,004 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:06:57,004 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 02:06:57,004 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 02:06:57,004 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 02:06:57,005 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:06:57,005 INFO L85 PathProgramCache]: Analyzing trace with hash -1773385638, now seen corresponding path program 1 times [2024-11-28 02:06:57,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:06:57,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240720931] [2024-11-28 02:06:57,005 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:06:57,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:06:57,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:06:57,105 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 02:06:57,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:06:57,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240720931] [2024-11-28 02:06:57,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240720931] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:06:57,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [523412077] [2024-11-28 02:06:57,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:06:57,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:06:57,106 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:06:57,108 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:06:57,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:06:57,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:06:57,151 INFO L256 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 02:06:57,153 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:06:57,266 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 02:06:57,266 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:06:57,489 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 02:06:57,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [523412077] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:06:57,490 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:06:57,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 19 [2024-11-28 02:06:57,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659816040] [2024-11-28 02:06:57,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:06:57,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 02:06:57,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:06:57,491 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 02:06:57,491 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2024-11-28 02:06:57,492 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 02:06:58,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:06:58,024 INFO L93 Difference]: Finished difference Result 204 states and 275 transitions. [2024-11-28 02:06:58,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 02:06:58,025 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 02:06:58,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:06:58,026 INFO L225 Difference]: With dead ends: 204 [2024-11-28 02:06:58,027 INFO L226 Difference]: Without dead ends: 135 [2024-11-28 02:06:58,028 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 02:06:58,029 INFO L435 NwaCegarLoop]: 58 mSDtfsCounter, 130 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:06:58,029 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 548 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 02:06:58,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-11-28 02:06:58,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 121. [2024-11-28 02:06:58,049 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, (34), 17 states have call predecessors, (34), 15 states have call successors, (34) [2024-11-28 02:06:58,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 157 transitions. [2024-11-28 02:06:58,051 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 157 transitions. Word has length 30 [2024-11-28 02:06:58,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:06:58,051 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 157 transitions. [2024-11-28 02:06:58,052 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 02:06:58,052 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 157 transitions. [2024-11-28 02:06:58,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-28 02:06:58,053 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:06:58,053 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 02:06:58,063 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 02:06:58,254 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:06:58,254 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 02:06:58,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:06:58,255 INFO L85 PathProgramCache]: Analyzing trace with hash -463506674, now seen corresponding path program 2 times [2024-11-28 02:06:58,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:06:58,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852879320] [2024-11-28 02:06:58,255 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:06:58,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:06:58,270 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:06:58,270 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:06:58,398 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 02:06:58,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:06:58,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852879320] [2024-11-28 02:06:58,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852879320] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:06:58,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520492373] [2024-11-28 02:06:58,398 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:06:58,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:06:58,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:06:58,401 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:06:58,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:06:58,452 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:06:58,452 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:06:58,453 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:06:58,456 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:06:58,526 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 02:06:58,526 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:06:58,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520492373] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:06:58,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:06:58,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-28 02:06:58,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231051749] [2024-11-28 02:06:58,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:06:58,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:06:58,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:06:58,527 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:06:58,527 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:06:58,528 INFO L87 Difference]: Start difference. First operand 121 states and 157 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 02:06:58,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:06:58,575 INFO L93 Difference]: Finished difference Result 130 states and 169 transitions. [2024-11-28 02:06:58,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:06:58,576 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 02:06:58,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:06:58,578 INFO L225 Difference]: With dead ends: 130 [2024-11-28 02:06:58,578 INFO L226 Difference]: Without dead ends: 129 [2024-11-28 02:06:58,578 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:06:58,579 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 02:06:58,579 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 02:06:58,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2024-11-28 02:06:58,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 125. [2024-11-28 02:06:58,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 96 states have (on average 1.15625) internal successors, (111), 99 states have internal predecessors, (111), 16 states have call successors, (16), 6 states have call predecessors, (16), 9 states have return successors, (34), 19 states have call predecessors, (34), 15 states have call successors, (34) [2024-11-28 02:06:58,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 161 transitions. [2024-11-28 02:06:58,600 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 161 transitions. Word has length 42 [2024-11-28 02:06:58,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:06:58,601 INFO L471 AbstractCegarLoop]: Abstraction has 125 states and 161 transitions. [2024-11-28 02:06:58,601 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 02:06:58,601 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 161 transitions. [2024-11-28 02:06:58,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-28 02:06:58,602 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:06:58,603 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 02:06:58,614 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 02:06:58,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 02:06:58,803 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 02:06:58,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:06:58,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1483804933, now seen corresponding path program 1 times [2024-11-28 02:06:58,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:06:58,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020440754] [2024-11-28 02:06:58,804 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:06:58,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:06:58,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:06:58,894 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 02:06:58,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:06:58,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020440754] [2024-11-28 02:06:58,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020440754] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:06:58,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345662348] [2024-11-28 02:06:58,894 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:06:58,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:06:58,894 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:06:58,898 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:06:58,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:06:58,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:06:58,942 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 02:06:58,944 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:06:59,131 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:06:59,131 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:06:59,368 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:06:59,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345662348] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:06:59,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:06:59,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 13, 13] total 18 [2024-11-28 02:06:59,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97005716] [2024-11-28 02:06:59,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:06:59,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 02:06:59,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:06:59,370 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 02:06:59,370 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2024-11-28 02:06:59,370 INFO L87 Difference]: Start difference. First operand 125 states and 161 transitions. Second operand has 18 states, 17 states have (on average 3.588235294117647) internal successors, (61), 14 states have internal predecessors, (61), 8 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-28 02:07:00,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:00,003 INFO L93 Difference]: Finished difference Result 299 states and 388 transitions. [2024-11-28 02:07:00,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 02:07:00,004 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.588235294117647) internal successors, (61), 14 states have internal predecessors, (61), 8 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 43 [2024-11-28 02:07:00,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:00,006 INFO L225 Difference]: With dead ends: 299 [2024-11-28 02:07:00,006 INFO L226 Difference]: Without dead ends: 189 [2024-11-28 02:07:00,007 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 68 SyntacticMatches, 10 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=474, Unknown=0, NotChecked=0, Total=552 [2024-11-28 02:07:00,008 INFO L435 NwaCegarLoop]: 58 mSDtfsCounter, 125 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:00,008 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 665 Invalid, 645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 02:07:00,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2024-11-28 02:07:00,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 168. [2024-11-28 02:07:00,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 131 states have (on average 1.1450381679389312) internal successors, (150), 132 states have internal predecessors, (150), 22 states have call successors, (22), 8 states have call predecessors, (22), 11 states have return successors, (48), 27 states have call predecessors, (48), 21 states have call successors, (48) [2024-11-28 02:07:00,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 220 transitions. [2024-11-28 02:07:00,030 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 220 transitions. Word has length 43 [2024-11-28 02:07:00,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:00,030 INFO L471 AbstractCegarLoop]: Abstraction has 168 states and 220 transitions. [2024-11-28 02:07:00,030 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.588235294117647) internal successors, (61), 14 states have internal predecessors, (61), 8 states have call successors, (11), 6 states have call predecessors, (11), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-28 02:07:00,030 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 220 transitions. [2024-11-28 02:07:00,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-28 02:07:00,032 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:00,032 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 02:07:00,045 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 02:07:00,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-28 02:07:00,232 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 02:07:00,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:00,233 INFO L85 PathProgramCache]: Analyzing trace with hash 2086948818, now seen corresponding path program 1 times [2024-11-28 02:07:00,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:00,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950159729] [2024-11-28 02:07:00,233 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:00,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:00,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:00,317 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 02:07:00,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:00,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950159729] [2024-11-28 02:07:00,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950159729] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:07:00,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [876685936] [2024-11-28 02:07:00,317 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:00,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:00,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:00,320 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:00,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:07:00,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:00,370 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 02:07:00,372 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:07:00,592 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 10 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:07:00,593 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:07:00,859 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:07:00,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [876685936] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:07:00,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:07:00,859 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 15, 15] total 20 [2024-11-28 02:07:00,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639997789] [2024-11-28 02:07:00,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:07:00,860 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 02:07:00,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:00,860 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 02:07:00,861 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2024-11-28 02:07:00,861 INFO L87 Difference]: Start difference. First operand 168 states and 220 transitions. Second operand has 20 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 15 states have internal predecessors, (63), 9 states have call successors, (12), 7 states have call predecessors, (12), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-28 02:07:01,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:01,480 INFO L93 Difference]: Finished difference Result 356 states and 468 transitions. [2024-11-28 02:07:01,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 02:07:01,481 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 15 states have internal predecessors, (63), 9 states have call successors, (12), 7 states have call predecessors, (12), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 48 [2024-11-28 02:07:01,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:01,482 INFO L225 Difference]: With dead ends: 356 [2024-11-28 02:07:01,483 INFO L226 Difference]: Without dead ends: 209 [2024-11-28 02:07:01,484 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 75 SyntacticMatches, 12 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=559, Unknown=0, NotChecked=0, Total=650 [2024-11-28 02:07:01,484 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 140 mSDsluCounter, 782 mSDsCounter, 0 mSdLazyCounter, 745 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 849 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:01,485 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 849 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 745 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 02:07:01,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2024-11-28 02:07:01,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 190. [2024-11-28 02:07:01,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 149 states have (on average 1.1409395973154361) internal successors, (170), 149 states have internal predecessors, (170), 25 states have call successors, (25), 9 states have call predecessors, (25), 12 states have return successors, (55), 31 states have call predecessors, (55), 24 states have call successors, (55) [2024-11-28 02:07:01,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 250 transitions. [2024-11-28 02:07:01,504 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 250 transitions. Word has length 48 [2024-11-28 02:07:01,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:01,505 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 250 transitions. [2024-11-28 02:07:01,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 15 states have internal predecessors, (63), 9 states have call successors, (12), 7 states have call predecessors, (12), 5 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-28 02:07:01,505 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 250 transitions. [2024-11-28 02:07:01,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-28 02:07:01,506 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:01,506 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 02:07:01,515 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 02:07:01,710 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-28 02:07:01,710 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 02:07:01,711 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:01,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1881704096, now seen corresponding path program 2 times [2024-11-28 02:07:01,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:01,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718857910] [2024-11-28 02:07:01,711 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:07:01,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:01,721 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:07:01,721 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:07:01,824 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 02:07:01,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:01,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718857910] [2024-11-28 02:07:01,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718857910] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:07:01,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372266492] [2024-11-28 02:07:01,824 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:07:01,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:01,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:01,827 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:01,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 02:07:01,880 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:07:01,880 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:07:01,881 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 02:07:01,882 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:07:01,931 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-28 02:07:01,931 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:07:01,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372266492] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:01,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:07:01,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-28 02:07:01,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836258438] [2024-11-28 02:07:01,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:01,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:07:01,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:01,933 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:07:01,933 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:07:01,933 INFO L87 Difference]: Start difference. First operand 190 states and 250 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 02:07:01,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:01,969 INFO L93 Difference]: Finished difference Result 203 states and 270 transitions. [2024-11-28 02:07:01,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:07:01,970 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 48 [2024-11-28 02:07:01,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:01,973 INFO L225 Difference]: With dead ends: 203 [2024-11-28 02:07:01,975 INFO L226 Difference]: Without dead ends: 202 [2024-11-28 02:07:01,976 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 45 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 02:07:01,976 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 4 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:01,976 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 107 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:07:01,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-11-28 02:07:01,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 198. [2024-11-28 02:07:01,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 157 states have (on average 1.1337579617834395) internal successors, (178), 153 states have internal predecessors, (178), 25 states have call successors, (25), 9 states have call predecessors, (25), 12 states have return successors, (55), 35 states have call predecessors, (55), 24 states have call successors, (55) [2024-11-28 02:07:02,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 258 transitions. [2024-11-28 02:07:02,002 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 258 transitions. Word has length 48 [2024-11-28 02:07:02,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:02,002 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 258 transitions. [2024-11-28 02:07:02,002 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 02:07:02,002 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 258 transitions. [2024-11-28 02:07:02,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-28 02:07:02,003 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:02,003 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, 1] [2024-11-28 02:07:02,012 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 02:07:02,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-28 02:07:02,204 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 02:07:02,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:02,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1796715069, now seen corresponding path program 1 times [2024-11-28 02:07:02,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:02,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641019033] [2024-11-28 02:07:02,205 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:02,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:02,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:02,286 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 02:07:02,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:02,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641019033] [2024-11-28 02:07:02,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641019033] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:07:02,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770089216] [2024-11-28 02:07:02,287 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:02,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:02,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:02,289 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:02,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 02:07:02,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:02,345 INFO L256 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 02:07:02,348 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:07:02,411 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-28 02:07:02,411 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:07:02,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770089216] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:02,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:07:02,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2024-11-28 02:07:02,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144856990] [2024-11-28 02:07:02,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:02,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 02:07:02,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:02,413 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 02:07:02,414 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:07:02,414 INFO L87 Difference]: Start difference. First operand 198 states and 258 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 02:07:02,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:02,472 INFO L93 Difference]: Finished difference Result 214 states and 279 transitions. [2024-11-28 02:07:02,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 02:07:02,473 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 49 [2024-11-28 02:07:02,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:02,476 INFO L225 Difference]: With dead ends: 214 [2024-11-28 02:07:02,476 INFO L226 Difference]: Without dead ends: 213 [2024-11-28 02:07:02,477 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-28 02:07:02,478 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 2 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:02,478 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 184 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:07:02,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2024-11-28 02:07:02,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 194. [2024-11-28 02:07:02,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 154 states have (on average 1.1363636363636365) internal successors, (175), 150 states have internal predecessors, (175), 24 states have call successors, (24), 9 states have call predecessors, (24), 12 states have return successors, (52), 34 states have call predecessors, (52), 23 states have call successors, (52) [2024-11-28 02:07:02,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 251 transitions. [2024-11-28 02:07:02,501 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 251 transitions. Word has length 49 [2024-11-28 02:07:02,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:02,503 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 251 transitions. [2024-11-28 02:07:02,503 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 02:07:02,503 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 251 transitions. [2024-11-28 02:07:02,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-28 02:07:02,504 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:02,504 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:02,515 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 02:07:02,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 02:07:02,705 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 02:07:02,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:02,706 INFO L85 PathProgramCache]: Analyzing trace with hash 282184236, now seen corresponding path program 1 times [2024-11-28 02:07:02,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:02,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492288738] [2024-11-28 02:07:02,706 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:02,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:02,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:02,822 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-11-28 02:07:02,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:02,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492288738] [2024-11-28 02:07:02,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492288738] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:02,822 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:02,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:07:02,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697061279] [2024-11-28 02:07:02,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:02,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:07:02,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:02,823 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:07:02,824 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:07:02,824 INFO L87 Difference]: Start difference. First operand 194 states and 251 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 02:07:02,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:02,876 INFO L93 Difference]: Finished difference Result 210 states and 272 transitions. [2024-11-28 02:07:02,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:07:02,877 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 56 [2024-11-28 02:07:02,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:02,878 INFO L225 Difference]: With dead ends: 210 [2024-11-28 02:07:02,878 INFO L226 Difference]: Without dead ends: 209 [2024-11-28 02:07:02,879 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 02:07:02,879 INFO L435 NwaCegarLoop]: 46 mSDtfsCounter, 2 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:02,879 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 169 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:07:02,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2024-11-28 02:07:02,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 190. [2024-11-28 02:07:02,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 151 states have (on average 1.1390728476821192) internal successors, (172), 147 states have internal predecessors, (172), 23 states have call successors, (23), 9 states have call predecessors, (23), 12 states have return successors, (49), 33 states have call predecessors, (49), 22 states have call successors, (49) [2024-11-28 02:07:02,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 244 transitions. [2024-11-28 02:07:02,899 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 244 transitions. Word has length 56 [2024-11-28 02:07:02,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:02,900 INFO L471 AbstractCegarLoop]: Abstraction has 190 states and 244 transitions. [2024-11-28 02:07:02,900 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 02:07:02,900 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 244 transitions. [2024-11-28 02:07:02,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-28 02:07:02,901 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:02,901 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:02,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 02:07:02,902 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 02:07:02,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:02,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1552143473, now seen corresponding path program 1 times [2024-11-28 02:07:02,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:02,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274779367] [2024-11-28 02:07:02,903 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:02,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:02,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:03,001 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-28 02:07:03,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:03,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274779367] [2024-11-28 02:07:03,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274779367] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:07:03,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790749540] [2024-11-28 02:07:03,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:03,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:03,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:03,004 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:03,009 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 02:07:03,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:03,063 INFO L256 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 02:07:03,065 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:07:03,328 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 28 proven. 33 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 02:07:03,328 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:07:03,600 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 28 proven. 33 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 02:07:03,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790749540] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:07:03,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:07:03,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 15, 15] total 19 [2024-11-28 02:07:03,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631636577] [2024-11-28 02:07:03,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:07:03,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 02:07:03,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:03,603 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 02:07:03,603 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2024-11-28 02:07:03,604 INFO L87 Difference]: Start difference. First operand 190 states and 244 transitions. Second operand has 19 states, 18 states have (on average 4.166666666666667) internal successors, (75), 14 states have internal predecessors, (75), 9 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-28 02:07:04,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:04,271 INFO L93 Difference]: Finished difference Result 451 states and 615 transitions. [2024-11-28 02:07:04,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 02:07:04,272 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 4.166666666666667) internal successors, (75), 14 states have internal predecessors, (75), 9 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 68 [2024-11-28 02:07:04,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:04,274 INFO L225 Difference]: With dead ends: 451 [2024-11-28 02:07:04,274 INFO L226 Difference]: Without dead ends: 282 [2024-11-28 02:07:04,276 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 114 SyntacticMatches, 12 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=158, Invalid=772, Unknown=0, NotChecked=0, Total=930 [2024-11-28 02:07:04,277 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 185 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:04,277 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 286 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 02:07:04,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2024-11-28 02:07:04,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 257. [2024-11-28 02:07:04,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 205 states have (on average 1.1317073170731706) internal successors, (232), 199 states have internal predecessors, (232), 32 states have call successors, (32), 12 states have call predecessors, (32), 16 states have return successors, (64), 45 states have call predecessors, (64), 31 states have call successors, (64) [2024-11-28 02:07:04,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 328 transitions. [2024-11-28 02:07:04,307 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 328 transitions. Word has length 68 [2024-11-28 02:07:04,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:04,309 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 328 transitions. [2024-11-28 02:07:04,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 4.166666666666667) internal successors, (75), 14 states have internal predecessors, (75), 9 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-28 02:07:04,309 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 328 transitions. [2024-11-28 02:07:04,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-28 02:07:04,310 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:04,310 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:04,322 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 02:07:04,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 02:07:04,512 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 02:07:04,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:04,512 INFO L85 PathProgramCache]: Analyzing trace with hash -814149297, now seen corresponding path program 1 times [2024-11-28 02:07:04,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:04,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120825528] [2024-11-28 02:07:04,513 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:04,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:04,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:04,628 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-28 02:07:04,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:04,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120825528] [2024-11-28 02:07:04,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120825528] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:04,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:04,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:07:04,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140493607] [2024-11-28 02:07:04,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:04,629 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:07:04,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:04,630 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:07:04,632 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:07:04,632 INFO L87 Difference]: Start difference. First operand 257 states and 328 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 02:07:04,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:04,679 INFO L93 Difference]: Finished difference Result 279 states and 353 transitions. [2024-11-28 02:07:04,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:07:04,679 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 62 [2024-11-28 02:07:04,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:04,682 INFO L225 Difference]: With dead ends: 279 [2024-11-28 02:07:04,682 INFO L226 Difference]: Without dead ends: 278 [2024-11-28 02:07:04,682 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 02:07:04,683 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 02:07:04,683 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 02:07:04,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2024-11-28 02:07:04,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 265. [2024-11-28 02:07:04,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 212 states have (on average 1.1273584905660377) internal successors, (239), 205 states have internal predecessors, (239), 32 states have call successors, (32), 12 states have call predecessors, (32), 17 states have return successors, (65), 47 states have call predecessors, (65), 31 states have call successors, (65) [2024-11-28 02:07:04,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 336 transitions. [2024-11-28 02:07:04,723 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 336 transitions. Word has length 62 [2024-11-28 02:07:04,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:04,724 INFO L471 AbstractCegarLoop]: Abstraction has 265 states and 336 transitions. [2024-11-28 02:07:04,724 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 02:07:04,724 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 336 transitions. [2024-11-28 02:07:04,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-28 02:07:04,725 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:04,726 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:04,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 02:07:04,726 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 02:07:04,726 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:04,727 INFO L85 PathProgramCache]: Analyzing trace with hash 898913762, now seen corresponding path program 1 times [2024-11-28 02:07:04,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:04,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330482674] [2024-11-28 02:07:04,727 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:04,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:04,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:04,944 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-28 02:07:04,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:04,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330482674] [2024-11-28 02:07:04,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330482674] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:07:04,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195304311] [2024-11-28 02:07:04,945 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:04,945 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:04,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:04,948 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:04,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 02:07:05,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:05,005 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 02:07:05,007 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:07:05,124 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2024-11-28 02:07:05,125 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:07:05,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195304311] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:05,125 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:07:05,125 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 14 [2024-11-28 02:07:05,125 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867495093] [2024-11-28 02:07:05,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:05,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 02:07:05,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:05,127 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 02:07:05,127 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:07:05,127 INFO L87 Difference]: Start difference. First operand 265 states and 336 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 02:07:05,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:05,258 INFO L93 Difference]: Finished difference Result 348 states and 459 transitions. [2024-11-28 02:07:05,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 02:07:05,258 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 63 [2024-11-28 02:07:05,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:05,260 INFO L225 Difference]: With dead ends: 348 [2024-11-28 02:07:05,261 INFO L226 Difference]: Without dead ends: 347 [2024-11-28 02:07:05,262 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 58 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 02:07:05,262 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 4 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:05,263 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 232 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:07:05,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2024-11-28 02:07:05,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 295. [2024-11-28 02:07:05,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 236 states have (on average 1.13135593220339) internal successors, (267), 227 states have internal predecessors, (267), 34 states have call successors, (34), 12 states have call predecessors, (34), 21 states have return successors, (83), 55 states have call predecessors, (83), 33 states have call successors, (83) [2024-11-28 02:07:05,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 384 transitions. [2024-11-28 02:07:05,298 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 384 transitions. Word has length 63 [2024-11-28 02:07:05,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:05,299 INFO L471 AbstractCegarLoop]: Abstraction has 295 states and 384 transitions. [2024-11-28 02:07:05,299 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 02:07:05,299 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 384 transitions. [2024-11-28 02:07:05,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-28 02:07:05,300 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:05,300 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:05,313 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 02:07:05,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 02:07:05,501 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 02:07:05,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:05,501 INFO L85 PathProgramCache]: Analyzing trace with hash -121328009, now seen corresponding path program 1 times [2024-11-28 02:07:05,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:05,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004702490] [2024-11-28 02:07:05,502 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:05,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:05,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:05,596 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-11-28 02:07:05,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:05,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004702490] [2024-11-28 02:07:05,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004702490] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:07:05,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852932835] [2024-11-28 02:07:05,596 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:05,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:05,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:05,598 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:05,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 02:07:05,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:05,652 INFO L256 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 02:07:05,654 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:07:05,890 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 112 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 02:07:05,890 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:07:05,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852932835] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:05,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:07:05,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [4] total 20 [2024-11-28 02:07:05,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131417598] [2024-11-28 02:07:05,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:05,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 02:07:05,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:05,892 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 02:07:05,892 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2024-11-28 02:07:05,893 INFO L87 Difference]: Start difference. First operand 295 states and 384 transitions. Second operand has 17 states, 16 states have (on average 3.6875) internal successors, (59), 10 states have internal predecessors, (59), 8 states have call successors, (11), 8 states have call predecessors, (11), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 02:07:06,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:06,343 INFO L93 Difference]: Finished difference Result 570 states and 767 transitions. [2024-11-28 02:07:06,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 02:07:06,344 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.6875) internal successors, (59), 10 states have internal predecessors, (59), 8 states have call successors, (11), 8 states have call predecessors, (11), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 84 [2024-11-28 02:07:06,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:06,346 INFO L225 Difference]: With dead ends: 570 [2024-11-28 02:07:06,346 INFO L226 Difference]: Without dead ends: 323 [2024-11-28 02:07:06,348 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=591, Unknown=0, NotChecked=0, Total=702 [2024-11-28 02:07:06,349 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 168 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:06,349 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 303 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:07:06,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2024-11-28 02:07:06,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 318. [2024-11-28 02:07:06,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 253 states have (on average 1.1304347826086956) internal successors, (286), 246 states have internal predecessors, (286), 36 states have call successors, (36), 14 states have call predecessors, (36), 25 states have return successors, (85), 57 states have call predecessors, (85), 35 states have call successors, (85) [2024-11-28 02:07:06,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 407 transitions. [2024-11-28 02:07:06,381 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 407 transitions. Word has length 84 [2024-11-28 02:07:06,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:06,382 INFO L471 AbstractCegarLoop]: Abstraction has 318 states and 407 transitions. [2024-11-28 02:07:06,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.6875) internal successors, (59), 10 states have internal predecessors, (59), 8 states have call successors, (11), 8 states have call predecessors, (11), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 02:07:06,382 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 407 transitions. [2024-11-28 02:07:06,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-28 02:07:06,384 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:06,384 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:06,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-28 02:07:06,584 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:06,585 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 02:07:06,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:06,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1999226584, now seen corresponding path program 1 times [2024-11-28 02:07:06,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:06,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834171232] [2024-11-28 02:07:06,585 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:06,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:06,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:06,666 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-28 02:07:06,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:06,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834171232] [2024-11-28 02:07:06,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834171232] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:07:06,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:07:06,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:07:06,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029010294] [2024-11-28 02:07:06,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:07:06,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:07:06,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:06,669 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:07:06,669 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:07:06,669 INFO L87 Difference]: Start difference. First operand 318 states and 407 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 02:07:06,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:06,717 INFO L93 Difference]: Finished difference Result 329 states and 420 transitions. [2024-11-28 02:07:06,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:07:06,718 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 67 [2024-11-28 02:07:06,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:06,720 INFO L225 Difference]: With dead ends: 329 [2024-11-28 02:07:06,720 INFO L226 Difference]: Without dead ends: 328 [2024-11-28 02:07:06,721 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 02:07:06,721 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 2 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:06,721 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 111 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:07:06,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2024-11-28 02:07:06,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 321. [2024-11-28 02:07:06,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 321 states, 256 states have (on average 1.12109375) internal successors, (287), 248 states have internal predecessors, (287), 36 states have call successors, (36), 14 states have call predecessors, (36), 25 states have return successors, (85), 58 states have call predecessors, (85), 35 states have call successors, (85) [2024-11-28 02:07:06,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 408 transitions. [2024-11-28 02:07:06,750 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 408 transitions. Word has length 67 [2024-11-28 02:07:06,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:06,751 INFO L471 AbstractCegarLoop]: Abstraction has 321 states and 408 transitions. [2024-11-28 02:07:06,751 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 02:07:06,751 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 408 transitions. [2024-11-28 02:07:06,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-28 02:07:06,753 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:06,753 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:06,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-28 02:07:06,753 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 02:07:06,754 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:06,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1319567220, now seen corresponding path program 1 times [2024-11-28 02:07:06,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:06,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922761718] [2024-11-28 02:07:06,755 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:06,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:06,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:07,018 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 14 proven. 43 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-28 02:07:07,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:07,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922761718] [2024-11-28 02:07:07,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922761718] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:07:07,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021976338] [2024-11-28 02:07:07,019 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:07,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:07,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:07,022 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:07,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 02:07:07,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:07,089 INFO L256 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 02:07:07,091 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:07:07,174 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 31 proven. 36 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 02:07:07,175 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:07:07,492 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 14 proven. 43 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-28 02:07:07,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1021976338] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:07:07,492 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:07:07,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 15 [2024-11-28 02:07:07,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135494183] [2024-11-28 02:07:07,493 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:07:07,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 02:07:07,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:07,494 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 02:07:07,494 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:07:07,494 INFO L87 Difference]: Start difference. First operand 321 states and 408 transitions. Second operand has 15 states, 14 states have (on average 4.928571428571429) internal successors, (69), 12 states have internal predecessors, (69), 8 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-28 02:07:07,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:07,962 INFO L93 Difference]: Finished difference Result 608 states and 774 transitions. [2024-11-28 02:07:07,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 02:07:07,962 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.928571428571429) internal successors, (69), 12 states have internal predecessors, (69), 8 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 76 [2024-11-28 02:07:07,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:07,965 INFO L225 Difference]: With dead ends: 608 [2024-11-28 02:07:07,965 INFO L226 Difference]: Without dead ends: 346 [2024-11-28 02:07:07,967 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 145 SyntacticMatches, 9 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2024-11-28 02:07:07,968 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 108 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:07,968 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 426 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 02:07:07,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2024-11-28 02:07:08,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 319. [2024-11-28 02:07:08,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 255 states have (on average 1.1176470588235294) internal successors, (285), 246 states have internal predecessors, (285), 36 states have call successors, (36), 14 states have call predecessors, (36), 24 states have return successors, (81), 58 states have call predecessors, (81), 35 states have call successors, (81) [2024-11-28 02:07:08,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 402 transitions. [2024-11-28 02:07:08,014 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 402 transitions. Word has length 76 [2024-11-28 02:07:08,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:08,014 INFO L471 AbstractCegarLoop]: Abstraction has 319 states and 402 transitions. [2024-11-28 02:07:08,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.928571428571429) internal successors, (69), 12 states have internal predecessors, (69), 8 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-28 02:07:08,015 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 402 transitions. [2024-11-28 02:07:08,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-28 02:07:08,019 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:08,019 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:08,030 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-28 02:07:08,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:08,220 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 02:07:08,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:08,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1385478177, now seen corresponding path program 1 times [2024-11-28 02:07:08,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:08,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667688336] [2024-11-28 02:07:08,221 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:08,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:08,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:08,421 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 18 proven. 38 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-28 02:07:08,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:08,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667688336] [2024-11-28 02:07:08,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667688336] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:07:08,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060482969] [2024-11-28 02:07:08,422 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:08,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:08,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:08,425 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:08,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 02:07:08,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:08,493 INFO L256 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 02:07:08,496 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:07:08,568 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 18 proven. 38 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-28 02:07:08,568 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:07:08,790 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 18 proven. 38 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-28 02:07:08,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060482969] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:07:08,790 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:07:08,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 12 [2024-11-28 02:07:08,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999048938] [2024-11-28 02:07:08,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:07:08,791 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 02:07:08,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:08,792 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 02:07:08,792 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:07:08,792 INFO L87 Difference]: Start difference. First operand 319 states and 402 transitions. Second operand has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 9 states have internal predecessors, (57), 5 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-28 02:07:09,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:09,075 INFO L93 Difference]: Finished difference Result 565 states and 709 transitions. [2024-11-28 02:07:09,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 02:07:09,076 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 9 states have internal predecessors, (57), 5 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 77 [2024-11-28 02:07:09,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:09,079 INFO L225 Difference]: With dead ends: 565 [2024-11-28 02:07:09,079 INFO L226 Difference]: Without dead ends: 323 [2024-11-28 02:07:09,081 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 148 SyntacticMatches, 8 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:07:09,085 INFO L435 NwaCegarLoop]: 49 mSDtfsCounter, 89 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:09,086 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 336 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:07:09,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2024-11-28 02:07:09,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 317. [2024-11-28 02:07:09,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 253 states have (on average 1.1185770750988142) internal successors, (283), 245 states have internal predecessors, (283), 36 states have call successors, (36), 14 states have call predecessors, (36), 24 states have return successors, (80), 57 states have call predecessors, (80), 35 states have call successors, (80) [2024-11-28 02:07:09,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 399 transitions. [2024-11-28 02:07:09,118 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 399 transitions. Word has length 77 [2024-11-28 02:07:09,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:09,119 INFO L471 AbstractCegarLoop]: Abstraction has 317 states and 399 transitions. [2024-11-28 02:07:09,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.181818181818182) internal successors, (57), 9 states have internal predecessors, (57), 5 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-28 02:07:09,119 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 399 transitions. [2024-11-28 02:07:09,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-28 02:07:09,121 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:09,121 INFO L218 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:09,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-28 02:07:09,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:09,322 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 02:07:09,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:09,323 INFO L85 PathProgramCache]: Analyzing trace with hash 67577538, now seen corresponding path program 1 times [2024-11-28 02:07:09,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:09,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984599785] [2024-11-28 02:07:09,323 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:09,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:09,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:09,716 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 26 proven. 42 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-28 02:07:09,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:09,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984599785] [2024-11-28 02:07:09,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984599785] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:07:09,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810261927] [2024-11-28 02:07:09,717 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:09,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:09,717 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:09,719 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:09,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 02:07:09,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:09,786 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 02:07:09,788 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:07:09,971 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2024-11-28 02:07:09,971 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:07:10,310 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-28 02:07:10,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810261927] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:07:10,311 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:07:10,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8, 7] total 27 [2024-11-28 02:07:10,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428013314] [2024-11-28 02:07:10,311 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:07:10,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-28 02:07:10,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:10,314 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-28 02:07:10,314 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2024-11-28 02:07:10,314 INFO L87 Difference]: Start difference. First operand 317 states and 399 transitions. Second operand has 27 states, 26 states have (on average 3.423076923076923) internal successors, (89), 23 states have internal predecessors, (89), 11 states have call successors, (16), 5 states have call predecessors, (16), 6 states have return successors, (14), 11 states have call predecessors, (14), 7 states have call successors, (14) [2024-11-28 02:07:11,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:11,625 INFO L93 Difference]: Finished difference Result 630 states and 824 transitions. [2024-11-28 02:07:11,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-28 02:07:11,626 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 3.423076923076923) internal successors, (89), 23 states have internal predecessors, (89), 11 states have call successors, (16), 5 states have call predecessors, (16), 6 states have return successors, (14), 11 states have call predecessors, (14), 7 states have call successors, (14) Word has length 80 [2024-11-28 02:07:11,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:11,629 INFO L225 Difference]: With dead ends: 630 [2024-11-28 02:07:11,629 INFO L226 Difference]: Without dead ends: 376 [2024-11-28 02:07:11,631 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 152 SyntacticMatches, 2 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 543 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=364, Invalid=2392, Unknown=0, NotChecked=0, Total=2756 [2024-11-28 02:07:11,632 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 198 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 907 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:11,632 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 293 Invalid, 988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 907 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 02:07:11,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2024-11-28 02:07:11,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 312. [2024-11-28 02:07:11,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 246 states have (on average 1.0934959349593496) internal successors, (269), 245 states have internal predecessors, (269), 37 states have call successors, (37), 14 states have call predecessors, (37), 25 states have return successors, (72), 52 states have call predecessors, (72), 36 states have call successors, (72) [2024-11-28 02:07:11,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 378 transitions. [2024-11-28 02:07:11,659 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 378 transitions. Word has length 80 [2024-11-28 02:07:11,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:11,659 INFO L471 AbstractCegarLoop]: Abstraction has 312 states and 378 transitions. [2024-11-28 02:07:11,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 3.423076923076923) internal successors, (89), 23 states have internal predecessors, (89), 11 states have call successors, (16), 5 states have call predecessors, (16), 6 states have return successors, (14), 11 states have call predecessors, (14), 7 states have call successors, (14) [2024-11-28 02:07:11,660 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 378 transitions. [2024-11-28 02:07:11,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-28 02:07:11,661 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:11,661 INFO L218 NwaCegarLoop]: trace histogram [6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:11,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-28 02:07:11,861 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:11,862 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 02:07:11,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:11,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1504852425, now seen corresponding path program 1 times [2024-11-28 02:07:11,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:11,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645784764] [2024-11-28 02:07:11,863 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:11,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:11,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:12,171 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 23 proven. 51 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-28 02:07:12,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:12,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645784764] [2024-11-28 02:07:12,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645784764] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:07:12,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1992887436] [2024-11-28 02:07:12,172 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:12,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:12,172 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:12,175 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:12,179 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 02:07:12,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:12,241 INFO L256 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-28 02:07:12,243 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:07:12,511 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2024-11-28 02:07:12,511 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:07:13,175 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2024-11-28 02:07:13,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1992887436] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:07:13,175 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:07:13,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 9, 11] total 32 [2024-11-28 02:07:13,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219159333] [2024-11-28 02:07:13,176 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:07:13,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-28 02:07:13,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:13,178 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-28 02:07:13,178 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=904, Unknown=0, NotChecked=0, Total=992 [2024-11-28 02:07:13,179 INFO L87 Difference]: Start difference. First operand 312 states and 378 transitions. Second operand has 32 states, 31 states have (on average 3.4516129032258065) internal successors, (107), 28 states have internal predecessors, (107), 14 states have call successors, (17), 5 states have call predecessors, (17), 8 states have return successors, (16), 14 states have call predecessors, (16), 10 states have call successors, (16) [2024-11-28 02:07:15,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:15,702 INFO L93 Difference]: Finished difference Result 763 states and 1024 transitions. [2024-11-28 02:07:15,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-28 02:07:15,703 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 3.4516129032258065) internal successors, (107), 28 states have internal predecessors, (107), 14 states have call successors, (17), 5 states have call predecessors, (17), 8 states have return successors, (16), 14 states have call predecessors, (16), 10 states have call successors, (16) Word has length 81 [2024-11-28 02:07:15,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:15,707 INFO L225 Difference]: With dead ends: 763 [2024-11-28 02:07:15,707 INFO L226 Difference]: Without dead ends: 475 [2024-11-28 02:07:15,711 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 157 SyntacticMatches, 3 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1396 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=779, Invalid=5227, Unknown=0, NotChecked=0, Total=6006 [2024-11-28 02:07:15,712 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 217 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 1538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:15,712 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 381 Invalid, 1538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 02:07:15,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2024-11-28 02:07:15,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 349. [2024-11-28 02:07:15,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 276 states have (on average 1.0905797101449275) internal successors, (301), 271 states have internal predecessors, (301), 40 states have call successors, (40), 13 states have call predecessors, (40), 29 states have return successors, (123), 64 states have call predecessors, (123), 39 states have call successors, (123) [2024-11-28 02:07:15,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 464 transitions. [2024-11-28 02:07:15,752 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 464 transitions. Word has length 81 [2024-11-28 02:07:15,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:15,753 INFO L471 AbstractCegarLoop]: Abstraction has 349 states and 464 transitions. [2024-11-28 02:07:15,753 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 3.4516129032258065) internal successors, (107), 28 states have internal predecessors, (107), 14 states have call successors, (17), 5 states have call predecessors, (17), 8 states have return successors, (16), 14 states have call predecessors, (16), 10 states have call successors, (16) [2024-11-28 02:07:15,753 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 464 transitions. [2024-11-28 02:07:15,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-28 02:07:15,755 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:15,755 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:15,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-28 02:07:15,959 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:15,959 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 02:07:15,960 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:15,960 INFO L85 PathProgramCache]: Analyzing trace with hash -2129556593, now seen corresponding path program 1 times [2024-11-28 02:07:15,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:15,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121682266] [2024-11-28 02:07:15,960 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:15,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:15,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:16,070 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 32 proven. 3 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2024-11-28 02:07:16,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:16,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121682266] [2024-11-28 02:07:16,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121682266] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:07:16,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136744435] [2024-11-28 02:07:16,071 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:16,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:16,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:16,073 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:16,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 02:07:16,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:16,154 INFO L256 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 02:07:16,156 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:07:16,346 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 33 proven. 52 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-28 02:07:16,346 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:07:16,664 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 33 proven. 52 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2024-11-28 02:07:16,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136744435] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:07:16,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:07:16,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 13, 13] total 17 [2024-11-28 02:07:16,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503749132] [2024-11-28 02:07:16,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:07:16,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 02:07:16,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:16,666 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 02:07:16,666 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2024-11-28 02:07:16,666 INFO L87 Difference]: Start difference. First operand 349 states and 464 transitions. Second operand has 17 states, 16 states have (on average 5.25) internal successors, (84), 14 states have internal predecessors, (84), 10 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (12), 4 states have call predecessors, (12), 7 states have call successors, (12) [2024-11-28 02:07:17,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:17,080 INFO L93 Difference]: Finished difference Result 649 states and 910 transitions. [2024-11-28 02:07:17,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 02:07:17,081 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 5.25) internal successors, (84), 14 states have internal predecessors, (84), 10 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (12), 4 states have call predecessors, (12), 7 states have call successors, (12) Word has length 94 [2024-11-28 02:07:17,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:17,085 INFO L225 Difference]: With dead ends: 649 [2024-11-28 02:07:17,085 INFO L226 Difference]: Without dead ends: 355 [2024-11-28 02:07:17,088 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 173 SyntacticMatches, 9 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=381, Unknown=0, NotChecked=0, Total=462 [2024-11-28 02:07:17,088 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 119 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:17,089 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 395 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:07:17,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2024-11-28 02:07:17,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 349. [2024-11-28 02:07:17,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 276 states have (on average 1.0905797101449275) internal successors, (301), 271 states have internal predecessors, (301), 40 states have call successors, (40), 13 states have call predecessors, (40), 29 states have return successors, (122), 64 states have call predecessors, (122), 39 states have call successors, (122) [2024-11-28 02:07:17,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 463 transitions. [2024-11-28 02:07:17,142 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 463 transitions. Word has length 94 [2024-11-28 02:07:17,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:17,143 INFO L471 AbstractCegarLoop]: Abstraction has 349 states and 463 transitions. [2024-11-28 02:07:17,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 5.25) internal successors, (84), 14 states have internal predecessors, (84), 10 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (12), 4 states have call predecessors, (12), 7 states have call successors, (12) [2024-11-28 02:07:17,143 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 463 transitions. [2024-11-28 02:07:17,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-28 02:07:17,144 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:17,144 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:17,184 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-28 02:07:17,345 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:17,346 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 02:07:17,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:17,346 INFO L85 PathProgramCache]: Analyzing trace with hash -506977808, now seen corresponding path program 2 times [2024-11-28 02:07:17,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:17,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423645312] [2024-11-28 02:07:17,347 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:07:17,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:17,371 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:07:17,372 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:07:17,759 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 8 proven. 27 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-11-28 02:07:17,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:17,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423645312] [2024-11-28 02:07:17,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423645312] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:07:17,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974308859] [2024-11-28 02:07:17,760 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:07:17,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:17,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:17,762 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:17,766 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 02:07:17,842 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:07:17,842 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:07:17,843 INFO L256 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 02:07:17,845 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:07:18,165 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 10 proven. 25 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-11-28 02:07:18,165 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:07:18,925 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 14 proven. 21 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-11-28 02:07:18,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974308859] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:07:18,926 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:07:18,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 15] total 34 [2024-11-28 02:07:18,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856804284] [2024-11-28 02:07:18,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:07:18,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-28 02:07:18,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:18,928 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-28 02:07:18,928 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1040, Unknown=0, NotChecked=0, Total=1190 [2024-11-28 02:07:18,932 INFO L87 Difference]: Start difference. First operand 349 states and 463 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 02:07:19,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:19,940 INFO L93 Difference]: Finished difference Result 660 states and 938 transitions. [2024-11-28 02:07:19,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-28 02:07:19,941 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 95 [2024-11-28 02:07:19,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:19,945 INFO L225 Difference]: With dead ends: 660 [2024-11-28 02:07:19,946 INFO L226 Difference]: Without dead ends: 657 [2024-11-28 02:07:19,947 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 166 SyntacticMatches, 6 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 830 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=402, Invalid=2568, Unknown=0, NotChecked=0, Total=2970 [2024-11-28 02:07:19,948 INFO L435 NwaCegarLoop]: 46 mSDtfsCounter, 38 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:19,948 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 689 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 02:07:19,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2024-11-28 02:07:19,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 416. [2024-11-28 02:07:19,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 327 states have (on average 1.0642201834862386) internal successors, (348), 326 states have internal predecessors, (348), 47 states have call successors, (47), 13 states have call predecessors, (47), 38 states have return successors, (186), 76 states have call predecessors, (186), 46 states have call successors, (186) [2024-11-28 02:07:19,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 581 transitions. [2024-11-28 02:07:19,994 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 581 transitions. Word has length 95 [2024-11-28 02:07:19,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:19,994 INFO L471 AbstractCegarLoop]: Abstraction has 416 states and 581 transitions. [2024-11-28 02:07:19,994 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 02:07:19,994 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 581 transitions. [2024-11-28 02:07:19,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-28 02:07:19,996 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:19,996 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:20,007 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-28 02:07:20,196 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:20,197 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 02:07:20,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:20,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1463557235, now seen corresponding path program 1 times [2024-11-28 02:07:20,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:20,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395377032] [2024-11-28 02:07:20,198 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:20,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:20,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:20,583 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 12 proven. 24 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-11-28 02:07:20,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:20,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395377032] [2024-11-28 02:07:20,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395377032] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:07:20,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633834213] [2024-11-28 02:07:20,584 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:20,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:20,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:20,586 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:20,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 02:07:20,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:20,672 INFO L256 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-28 02:07:20,674 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:07:20,889 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 13 proven. 13 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-28 02:07:20,889 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:07:21,583 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 23 proven. 13 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-11-28 02:07:21,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633834213] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:07:21,584 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:07:21,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 16] total 33 [2024-11-28 02:07:21,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7876560] [2024-11-28 02:07:21,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:07:21,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-28 02:07:21,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:21,586 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-28 02:07:21,586 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=970, Unknown=0, NotChecked=0, Total=1122 [2024-11-28 02:07:21,587 INFO L87 Difference]: Start difference. First operand 416 states and 581 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 02:07:22,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:22,075 INFO L93 Difference]: Finished difference Result 572 states and 773 transitions. [2024-11-28 02:07:22,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-28 02:07:22,076 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 96 [2024-11-28 02:07:22,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:22,081 INFO L225 Difference]: With dead ends: 572 [2024-11-28 02:07:22,081 INFO L226 Difference]: Without dead ends: 570 [2024-11-28 02:07:22,082 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 169 SyntacticMatches, 6 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 737 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=267, Invalid=1625, Unknown=0, NotChecked=0, Total=1892 [2024-11-28 02:07:22,083 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 30 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:22,083 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 440 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:07:22,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2024-11-28 02:07:22,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 412. [2024-11-28 02:07:22,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 323 states have (on average 1.0402476780185759) internal successors, (336), 324 states have internal predecessors, (336), 45 states have call successors, (45), 13 states have call predecessors, (45), 40 states have return successors, (178), 74 states have call predecessors, (178), 44 states have call successors, (178) [2024-11-28 02:07:22,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 559 transitions. [2024-11-28 02:07:22,151 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 559 transitions. Word has length 96 [2024-11-28 02:07:22,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:22,153 INFO L471 AbstractCegarLoop]: Abstraction has 412 states and 559 transitions. [2024-11-28 02:07:22,153 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 02:07:22,153 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 559 transitions. [2024-11-28 02:07:22,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2024-11-28 02:07:22,156 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:22,157 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 8, 8, 7, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1] [2024-11-28 02:07:22,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-28 02:07:22,357 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:22,357 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 02:07:22,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:22,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1096167196, now seen corresponding path program 1 times [2024-11-28 02:07:22,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:22,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055879648] [2024-11-28 02:07:22,358 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:22,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:22,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:22,768 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 85 proven. 143 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2024-11-28 02:07:22,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:22,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055879648] [2024-11-28 02:07:22,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1055879648] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:07:22,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042454599] [2024-11-28 02:07:22,769 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:07:22,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:22,769 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:22,772 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:22,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 02:07:22,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:07:22,878 INFO L256 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-28 02:07:22,881 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:07:23,615 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 65 proven. 91 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2024-11-28 02:07:23,616 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:07:26,005 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 91 proven. 83 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2024-11-28 02:07:26,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042454599] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:07:26,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:07:26,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 21, 26] total 51 [2024-11-28 02:07:26,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862889396] [2024-11-28 02:07:26,006 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:07:26,006 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2024-11-28 02:07:26,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:26,008 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2024-11-28 02:07:26,008 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=225, Invalid=2325, Unknown=0, NotChecked=0, Total=2550 [2024-11-28 02:07:26,009 INFO L87 Difference]: Start difference. First operand 412 states and 559 transitions. Second operand has 51 states, 50 states have (on average 3.52) internal successors, (176), 49 states have internal predecessors, (176), 19 states have call successors, (25), 3 states have call predecessors, (25), 14 states have return successors, (38), 33 states have call predecessors, (38), 17 states have call successors, (38) [2024-11-28 02:07:29,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:29,129 INFO L93 Difference]: Finished difference Result 1035 states and 1424 transitions. [2024-11-28 02:07:29,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-11-28 02:07:29,130 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 50 states have (on average 3.52) internal successors, (176), 49 states have internal predecessors, (176), 19 states have call successors, (25), 3 states have call predecessors, (25), 14 states have return successors, (38), 33 states have call predecessors, (38), 17 states have call successors, (38) Word has length 167 [2024-11-28 02:07:29,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:29,136 INFO L225 Difference]: With dead ends: 1035 [2024-11-28 02:07:29,136 INFO L226 Difference]: Without dead ends: 544 [2024-11-28 02:07:29,144 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 284 SyntacticMatches, 16 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4312 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1523, Invalid=12049, Unknown=0, NotChecked=0, Total=13572 [2024-11-28 02:07:29,145 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 243 mSDsluCounter, 397 mSDsCounter, 0 mSdLazyCounter, 1818 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 1978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 1818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:29,146 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 416 Invalid, 1978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 1818 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-28 02:07:29,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2024-11-28 02:07:29,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 331. [2024-11-28 02:07:29,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 259 states have (on average 1.0308880308880308) internal successors, (267), 263 states have internal predecessors, (267), 38 states have call successors, (38), 13 states have call predecessors, (38), 32 states have return successors, (100), 54 states have call predecessors, (100), 37 states have call successors, (100) [2024-11-28 02:07:29,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 405 transitions. [2024-11-28 02:07:29,219 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 405 transitions. Word has length 167 [2024-11-28 02:07:29,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:29,220 INFO L471 AbstractCegarLoop]: Abstraction has 331 states and 405 transitions. [2024-11-28 02:07:29,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 50 states have (on average 3.52) internal successors, (176), 49 states have internal predecessors, (176), 19 states have call successors, (25), 3 states have call predecessors, (25), 14 states have return successors, (38), 33 states have call predecessors, (38), 17 states have call successors, (38) [2024-11-28 02:07:29,220 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 405 transitions. [2024-11-28 02:07:29,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-28 02:07:29,223 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:29,223 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 8, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2024-11-28 02:07:29,234 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-28 02:07:29,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:29,424 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 02:07:29,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:29,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1091901888, now seen corresponding path program 2 times [2024-11-28 02:07:29,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:29,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501009461] [2024-11-28 02:07:29,425 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:07:29,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:29,450 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:07:29,450 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:07:29,754 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 120 proven. 68 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2024-11-28 02:07:29,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:29,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501009461] [2024-11-28 02:07:29,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501009461] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:07:29,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909698437] [2024-11-28 02:07:29,755 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:07:29,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:29,755 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:29,757 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:29,761 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 02:07:29,885 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:07:29,885 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:07:29,887 INFO L256 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 02:07:29,890 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:07:29,983 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 118 proven. 69 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2024-11-28 02:07:29,983 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:07:30,535 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 118 proven. 70 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2024-11-28 02:07:30,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1909698437] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:07:30,536 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:07:30,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 13] total 17 [2024-11-28 02:07:30,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706262759] [2024-11-28 02:07:30,536 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:07:30,536 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 02:07:30,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:30,537 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 02:07:30,537 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2024-11-28 02:07:30,537 INFO L87 Difference]: Start difference. First operand 331 states and 405 transitions. Second operand has 17 states, 16 states have (on average 5.6875) internal successors, (91), 15 states have internal predecessors, (91), 9 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2024-11-28 02:07:30,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:30,888 INFO L93 Difference]: Finished difference Result 577 states and 724 transitions. [2024-11-28 02:07:30,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 02:07:30,889 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 5.6875) internal successors, (91), 15 states have internal predecessors, (91), 9 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) Word has length 150 [2024-11-28 02:07:30,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:30,892 INFO L225 Difference]: With dead ends: 577 [2024-11-28 02:07:30,894 INFO L226 Difference]: Without dead ends: 321 [2024-11-28 02:07:30,896 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 290 SyntacticMatches, 8 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2024-11-28 02:07:30,901 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 76 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 217 SdHoareTripleChecker+Invalid, 294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:30,901 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 217 Invalid, 294 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:07:30,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2024-11-28 02:07:30,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 288. [2024-11-28 02:07:30,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 225 states have (on average 1.0266666666666666) internal successors, (231), 230 states have internal predecessors, (231), 34 states have call successors, (34), 13 states have call predecessors, (34), 28 states have return successors, (72), 44 states have call predecessors, (72), 33 states have call successors, (72) [2024-11-28 02:07:30,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 337 transitions. [2024-11-28 02:07:30,944 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 337 transitions. Word has length 150 [2024-11-28 02:07:30,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:30,945 INFO L471 AbstractCegarLoop]: Abstraction has 288 states and 337 transitions. [2024-11-28 02:07:30,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 5.6875) internal successors, (91), 15 states have internal predecessors, (91), 9 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2024-11-28 02:07:30,945 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 337 transitions. [2024-11-28 02:07:30,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2024-11-28 02:07:30,950 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:30,951 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 9, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 2, 2, 1, 1, 1, 1] [2024-11-28 02:07:30,965 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-28 02:07:31,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-28 02:07:31,155 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 02:07:31,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:31,156 INFO L85 PathProgramCache]: Analyzing trace with hash -94581914, now seen corresponding path program 2 times [2024-11-28 02:07:31,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:31,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063536485] [2024-11-28 02:07:31,156 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:07:31,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:31,187 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:07:31,187 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:07:31,386 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 128 proven. 47 refuted. 0 times theorem prover too weak. 462 trivial. 0 not checked. [2024-11-28 02:07:31,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:31,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063536485] [2024-11-28 02:07:31,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063536485] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:07:31,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717580190] [2024-11-28 02:07:31,387 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:07:31,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:31,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:31,389 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:31,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 02:07:31,517 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:07:31,517 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:07:31,519 INFO L256 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 02:07:31,522 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:07:31,646 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 355 proven. 58 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2024-11-28 02:07:31,647 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:07:32,260 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 109 proven. 120 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2024-11-28 02:07:32,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717580190] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:07:32,261 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:07:32,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 11] total 16 [2024-11-28 02:07:32,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1926958110] [2024-11-28 02:07:32,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:07:32,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 02:07:32,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:32,263 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 02:07:32,263 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2024-11-28 02:07:32,264 INFO L87 Difference]: Start difference. First operand 288 states and 337 transitions. Second operand has 16 states, 15 states have (on average 7.866666666666666) internal successors, (118), 15 states have internal predecessors, (118), 8 states have call successors, (20), 3 states have call predecessors, (20), 7 states have return successors, (21), 10 states have call predecessors, (21), 7 states have call successors, (21) [2024-11-28 02:07:32,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:32,666 INFO L93 Difference]: Finished difference Result 550 states and 650 transitions. [2024-11-28 02:07:32,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 02:07:32,667 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 7.866666666666666) internal successors, (118), 15 states have internal predecessors, (118), 8 states have call successors, (20), 3 states have call predecessors, (20), 7 states have return successors, (21), 10 states have call predecessors, (21), 7 states have call successors, (21) Word has length 201 [2024-11-28 02:07:32,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:32,670 INFO L225 Difference]: With dead ends: 550 [2024-11-28 02:07:32,670 INFO L226 Difference]: Without dead ends: 286 [2024-11-28 02:07:32,672 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 390 SyntacticMatches, 6 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2024-11-28 02:07:32,673 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 74 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:32,673 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 298 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:07:32,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2024-11-28 02:07:32,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 222. [2024-11-28 02:07:32,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 174 states have (on average 1.028735632183908) internal successors, (179), 178 states have internal predecessors, (179), 27 states have call successors, (27), 14 states have call predecessors, (27), 20 states have return successors, (43), 29 states have call predecessors, (43), 26 states have call successors, (43) [2024-11-28 02:07:32,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 249 transitions. [2024-11-28 02:07:32,701 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 249 transitions. Word has length 201 [2024-11-28 02:07:32,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:32,702 INFO L471 AbstractCegarLoop]: Abstraction has 222 states and 249 transitions. [2024-11-28 02:07:32,702 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 7.866666666666666) internal successors, (118), 15 states have internal predecessors, (118), 8 states have call successors, (20), 3 states have call predecessors, (20), 7 states have return successors, (21), 10 states have call predecessors, (21), 7 states have call successors, (21) [2024-11-28 02:07:32,702 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 249 transitions. [2024-11-28 02:07:32,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-11-28 02:07:32,705 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:32,705 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 11, 10, 10, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 2, 2, 1, 1, 1, 1] [2024-11-28 02:07:32,716 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-28 02:07:32,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:32,906 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 02:07:32,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:32,906 INFO L85 PathProgramCache]: Analyzing trace with hash -583368304, now seen corresponding path program 3 times [2024-11-28 02:07:32,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:32,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052287981] [2024-11-28 02:07:32,907 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:07:32,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:32,935 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-28 02:07:32,935 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:07:33,119 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 237 proven. 20 refuted. 0 times theorem prover too weak. 538 trivial. 0 not checked. [2024-11-28 02:07:33,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:33,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052287981] [2024-11-28 02:07:33,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052287981] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:07:33,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [816151851] [2024-11-28 02:07:33,120 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:07:33,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:33,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:33,123 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:33,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 02:07:33,249 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-28 02:07:33,249 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:07:33,251 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 02:07:33,258 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:07:33,383 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 265 proven. 28 refuted. 0 times theorem prover too weak. 502 trivial. 0 not checked. [2024-11-28 02:07:33,383 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:07:34,120 INFO L134 CoverageAnalysis]: Checked inductivity of 795 backedges. 265 proven. 28 refuted. 0 times theorem prover too weak. 502 trivial. 0 not checked. [2024-11-28 02:07:34,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [816151851] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:07:34,120 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:07:34,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 18 [2024-11-28 02:07:34,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314508225] [2024-11-28 02:07:34,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:07:34,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 02:07:34,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:34,122 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 02:07:34,122 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2024-11-28 02:07:34,123 INFO L87 Difference]: Start difference. First operand 222 states and 249 transitions. Second operand has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 9 states have call successors, (14), 1 states have call predecessors, (14), 6 states have return successors, (15), 6 states have call predecessors, (15), 9 states have call successors, (15) [2024-11-28 02:07:34,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:34,475 INFO L93 Difference]: Finished difference Result 391 states and 460 transitions. [2024-11-28 02:07:34,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 02:07:34,475 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 9 states have call successors, (14), 1 states have call predecessors, (14), 6 states have return successors, (15), 6 states have call predecessors, (15), 9 states have call successors, (15) Word has length 222 [2024-11-28 02:07:34,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:34,478 INFO L225 Difference]: With dead ends: 391 [2024-11-28 02:07:34,478 INFO L226 Difference]: Without dead ends: 234 [2024-11-28 02:07:34,479 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 432 SyntacticMatches, 5 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=141, Invalid=561, Unknown=0, NotChecked=0, Total=702 [2024-11-28 02:07:34,480 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 119 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:34,480 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 151 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:07:34,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2024-11-28 02:07:34,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 229. [2024-11-28 02:07:34,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 181 states have (on average 1.0276243093922652) internal successors, (186), 182 states have internal predecessors, (186), 27 states have call successors, (27), 17 states have call predecessors, (27), 20 states have return successors, (41), 29 states have call predecessors, (41), 26 states have call successors, (41) [2024-11-28 02:07:34,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 254 transitions. [2024-11-28 02:07:34,506 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 254 transitions. Word has length 222 [2024-11-28 02:07:34,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:34,506 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 254 transitions. [2024-11-28 02:07:34,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.277777777777778) internal successors, (95), 18 states have internal predecessors, (95), 9 states have call successors, (14), 1 states have call predecessors, (14), 6 states have return successors, (15), 6 states have call predecessors, (15), 9 states have call successors, (15) [2024-11-28 02:07:34,507 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 254 transitions. [2024-11-28 02:07:34,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2024-11-28 02:07:34,509 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:34,509 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 13, 12, 11, 10, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 3, 3, 3, 1, 1, 1, 1] [2024-11-28 02:07:34,519 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-28 02:07:34,713 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-11-28 02:07:34,715 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 02:07:34,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:34,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1657552558, now seen corresponding path program 4 times [2024-11-28 02:07:34,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:34,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320433370] [2024-11-28 02:07:34,716 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:07:34,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:34,743 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:07:34,743 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:07:35,013 INFO L134 CoverageAnalysis]: Checked inductivity of 1112 backedges. 317 proven. 123 refuted. 0 times theorem prover too weak. 672 trivial. 0 not checked. [2024-11-28 02:07:35,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:35,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320433370] [2024-11-28 02:07:35,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320433370] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:07:35,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818672911] [2024-11-28 02:07:35,014 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 02:07:35,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:35,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:35,017 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:35,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-28 02:07:35,148 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 02:07:35,148 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:07:35,149 INFO L256 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 02:07:35,154 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:07:35,303 INFO L134 CoverageAnalysis]: Checked inductivity of 1112 backedges. 345 proven. 129 refuted. 0 times theorem prover too weak. 638 trivial. 0 not checked. [2024-11-28 02:07:35,303 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:07:36,482 INFO L134 CoverageAnalysis]: Checked inductivity of 1112 backedges. 345 proven. 141 refuted. 0 times theorem prover too weak. 626 trivial. 0 not checked. [2024-11-28 02:07:36,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818672911] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:07:36,482 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:07:36,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 15] total 20 [2024-11-28 02:07:36,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910435165] [2024-11-28 02:07:36,483 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:07:36,483 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 02:07:36,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:36,484 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 02:07:36,484 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2024-11-28 02:07:36,484 INFO L87 Difference]: Start difference. First operand 229 states and 254 transitions. Second operand has 20 states, 19 states have (on average 5.894736842105263) internal successors, (112), 19 states have internal predecessors, (112), 14 states have call successors, (19), 2 states have call predecessors, (19), 6 states have return successors, (20), 8 states have call predecessors, (20), 13 states have call successors, (20) [2024-11-28 02:07:36,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:36,879 INFO L93 Difference]: Finished difference Result 278 states and 313 transitions. [2024-11-28 02:07:36,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 02:07:36,880 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 5.894736842105263) internal successors, (112), 19 states have internal predecessors, (112), 14 states have call successors, (19), 2 states have call predecessors, (19), 6 states have return successors, (20), 8 states have call predecessors, (20), 13 states have call successors, (20) Word has length 260 [2024-11-28 02:07:36,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:36,883 INFO L225 Difference]: With dead ends: 278 [2024-11-28 02:07:36,883 INFO L226 Difference]: Without dead ends: 233 [2024-11-28 02:07:36,884 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 543 GetRequests, 508 SyntacticMatches, 8 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=163, Invalid=649, Unknown=0, NotChecked=0, Total=812 [2024-11-28 02:07:36,884 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 45 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 353 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:36,885 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 318 Invalid, 353 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:07:36,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2024-11-28 02:07:36,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 215. [2024-11-28 02:07:36,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 170 states have (on average 1.0294117647058822) internal successors, (175), 171 states have internal predecessors, (175), 26 states have call successors, (26), 17 states have call predecessors, (26), 18 states have return successors, (35), 26 states have call predecessors, (35), 25 states have call successors, (35) [2024-11-28 02:07:36,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 236 transitions. [2024-11-28 02:07:36,911 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 236 transitions. Word has length 260 [2024-11-28 02:07:36,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:36,911 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 236 transitions. [2024-11-28 02:07:36,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 5.894736842105263) internal successors, (112), 19 states have internal predecessors, (112), 14 states have call successors, (19), 2 states have call predecessors, (19), 6 states have return successors, (20), 8 states have call predecessors, (20), 13 states have call successors, (20) [2024-11-28 02:07:36,912 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 236 transitions. [2024-11-28 02:07:36,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2024-11-28 02:07:36,914 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:36,914 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 3, 2, 1, 1, 1, 1] [2024-11-28 02:07:36,926 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-28 02:07:37,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-28 02:07:37,116 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 02:07:37,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:37,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1967493030, now seen corresponding path program 5 times [2024-11-28 02:07:37,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:37,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553713047] [2024-11-28 02:07:37,117 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:07:37,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:37,177 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-11-28 02:07:37,177 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:07:39,369 INFO L134 CoverageAnalysis]: Checked inductivity of 942 backedges. 162 proven. 245 refuted. 0 times theorem prover too weak. 535 trivial. 0 not checked. [2024-11-28 02:07:39,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:39,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553713047] [2024-11-28 02:07:39,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553713047] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:07:39,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [166701790] [2024-11-28 02:07:39,370 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 02:07:39,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:39,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:39,372 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:39,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-28 02:07:39,576 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2024-11-28 02:07:39,576 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:07:39,579 INFO L256 TraceCheckSpWp]: Trace formula consists of 466 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-28 02:07:39,584 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:07:40,165 INFO L134 CoverageAnalysis]: Checked inductivity of 942 backedges. 148 proven. 181 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2024-11-28 02:07:40,165 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:07:44,299 INFO L134 CoverageAnalysis]: Checked inductivity of 942 backedges. 218 proven. 160 refuted. 0 times theorem prover too weak. 564 trivial. 0 not checked. [2024-11-28 02:07:44,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [166701790] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:07:44,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:07:44,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 24, 29] total 57 [2024-11-28 02:07:44,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794352721] [2024-11-28 02:07:44,301 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:07:44,301 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2024-11-28 02:07:44,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:44,303 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2024-11-28 02:07:44,304 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=414, Invalid=2892, Unknown=0, NotChecked=0, Total=3306 [2024-11-28 02:07:44,304 INFO L87 Difference]: Start difference. First operand 215 states and 236 transitions. Second operand has 58 states, 57 states have (on average 2.7017543859649122) internal successors, (154), 58 states have internal predecessors, (154), 14 states have call successors, (16), 1 states have call predecessors, (16), 18 states have return successors, (38), 38 states have call predecessors, (38), 14 states have call successors, (38) [2024-11-28 02:07:44,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:44,785 INFO L93 Difference]: Finished difference Result 297 states and 329 transitions. [2024-11-28 02:07:44,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-11-28 02:07:44,785 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 57 states have (on average 2.7017543859649122) internal successors, (154), 58 states have internal predecessors, (154), 14 states have call successors, (16), 1 states have call predecessors, (16), 18 states have return successors, (38), 38 states have call predecessors, (38), 14 states have call successors, (38) Word has length 241 [2024-11-28 02:07:44,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:44,786 INFO L225 Difference]: With dead ends: 297 [2024-11-28 02:07:44,787 INFO L226 Difference]: Without dead ends: 279 [2024-11-28 02:07:44,787 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 538 GetRequests, 446 SyntacticMatches, 27 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3269 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=563, Invalid=3859, Unknown=0, NotChecked=0, Total=4422 [2024-11-28 02:07:44,788 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 22 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:44,788 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 728 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:07:44,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2024-11-28 02:07:44,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 265. [2024-11-28 02:07:44,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 209 states have (on average 1.0239234449760766) internal successors, (214), 210 states have internal predecessors, (214), 31 states have call successors, (31), 17 states have call predecessors, (31), 24 states have return successors, (49), 37 states have call predecessors, (49), 30 states have call successors, (49) [2024-11-28 02:07:44,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 294 transitions. [2024-11-28 02:07:44,818 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 294 transitions. Word has length 241 [2024-11-28 02:07:44,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:44,818 INFO L471 AbstractCegarLoop]: Abstraction has 265 states and 294 transitions. [2024-11-28 02:07:44,819 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 57 states have (on average 2.7017543859649122) internal successors, (154), 58 states have internal predecessors, (154), 14 states have call successors, (16), 1 states have call predecessors, (16), 18 states have return successors, (38), 38 states have call predecessors, (38), 14 states have call successors, (38) [2024-11-28 02:07:44,819 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 294 transitions. [2024-11-28 02:07:44,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2024-11-28 02:07:44,821 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:07:44,821 INFO L218 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 2, 1, 1, 1, 1, 1] [2024-11-28 02:07:44,832 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-11-28 02:07:45,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-28 02:07:45,025 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 9 more)] === [2024-11-28 02:07:45,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:07:45,026 INFO L85 PathProgramCache]: Analyzing trace with hash 207888092, now seen corresponding path program 6 times [2024-11-28 02:07:45,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:07:45,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514447495] [2024-11-28 02:07:45,026 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:07:45,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:07:45,068 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-28 02:07:45,068 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:07:45,229 INFO L134 CoverageAnalysis]: Checked inductivity of 963 backedges. 221 proven. 27 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2024-11-28 02:07:45,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:07:45,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514447495] [2024-11-28 02:07:45,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514447495] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:07:45,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923548516] [2024-11-28 02:07:45,230 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 02:07:45,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:07:45,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:07:45,233 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:07:45,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-28 02:07:45,445 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-28 02:07:45,445 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:07:45,448 INFO L256 TraceCheckSpWp]: Trace formula consists of 412 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 02:07:45,452 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:07:45,561 INFO L134 CoverageAnalysis]: Checked inductivity of 963 backedges. 431 proven. 4 refuted. 0 times theorem prover too weak. 528 trivial. 0 not checked. [2024-11-28 02:07:45,561 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:07:46,216 INFO L134 CoverageAnalysis]: Checked inductivity of 963 backedges. 254 proven. 31 refuted. 0 times theorem prover too weak. 678 trivial. 0 not checked. [2024-11-28 02:07:46,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923548516] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:07:46,216 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:07:46,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 15 [2024-11-28 02:07:46,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690379003] [2024-11-28 02:07:46,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:07:46,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 02:07:46,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:07:46,218 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 02:07:46,219 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:07:46,219 INFO L87 Difference]: Start difference. First operand 265 states and 294 transitions. Second operand has 15 states, 15 states have (on average 6.466666666666667) internal successors, (97), 15 states have internal predecessors, (97), 6 states have call successors, (16), 2 states have call predecessors, (16), 6 states have return successors, (20), 7 states have call predecessors, (20), 6 states have call successors, (20) [2024-11-28 02:07:46,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:07:46,534 INFO L93 Difference]: Finished difference Result 412 states and 459 transitions. [2024-11-28 02:07:46,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 02:07:46,534 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 6.466666666666667) internal successors, (97), 15 states have internal predecessors, (97), 6 states have call successors, (16), 2 states have call predecessors, (16), 6 states have return successors, (20), 7 states have call predecessors, (20), 6 states have call successors, (20) Word has length 243 [2024-11-28 02:07:46,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:07:46,536 INFO L225 Difference]: With dead ends: 412 [2024-11-28 02:07:46,536 INFO L226 Difference]: Without dead ends: 0 [2024-11-28 02:07:46,537 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 474 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420 [2024-11-28 02:07:46,539 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 89 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 02:07:46,539 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 199 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 02:07:46,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-28 02:07:46,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-28 02:07:46,540 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 02:07:46,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-28 02:07:46,541 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 243 [2024-11-28 02:07:46,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:07:46,541 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-28 02:07:46,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.466666666666667) internal successors, (97), 15 states have internal predecessors, (97), 6 states have call successors, (16), 2 states have call predecessors, (16), 6 states have return successors, (20), 7 states have call predecessors, (20), 6 states have call successors, (20) [2024-11-28 02:07:46,541 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-28 02:07:46,541 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-28 02:07:46,544 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 12 remaining) [2024-11-28 02:07:46,545 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 12 remaining) [2024-11-28 02:07:46,545 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 12 remaining) [2024-11-28 02:07:46,545 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 12 remaining) [2024-11-28 02:07:46,545 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 12 remaining) [2024-11-28 02:07:46,545 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 12 remaining) [2024-11-28 02:07:46,545 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 12 remaining) [2024-11-28 02:07:46,545 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 12 remaining) [2024-11-28 02:07:46,545 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 12 remaining) [2024-11-28 02:07:46,545 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 12 remaining) [2024-11-28 02:07:46,545 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 12 remaining) [2024-11-28 02:07:46,545 INFO L782 garLoopResultBuilder]: Registering result SAFE for location fibo1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 12 remaining) [2024-11-28 02:07:46,556 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-28 02:07:46,746 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-28 02:07:46,750 INFO L422 BasicCegarLoop]: Path program histogram: [6, 2, 2, 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 02:07:46,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-28 02:08:04,696 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 02:08:04,703 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:08:04 BoogieIcfgContainer [2024-11-28 02:08:04,704 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 02:08:04,704 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 02:08:04,705 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 02:08:04,705 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 02:08:04,706 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:06:54" (3/4) ... [2024-11-28 02:08:04,709 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-28 02:08:04,715 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo2 [2024-11-28 02:08:04,715 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure fibo1 [2024-11-28 02:08:04,719 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-28 02:08:04,720 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-28 02:08:04,720 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-28 02:08:04,720 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-28 02:08:04,811 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 02:08:04,811 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-28 02:08:04,811 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 02:08:04,814 INFO L158 Benchmark]: Toolchain (without parser) took 71284.86ms. Allocated memory was 142.6MB in the beginning and 696.3MB in the end (delta: 553.6MB). Free memory was 117.5MB in the beginning and 626.8MB in the end (delta: -509.3MB). Peak memory consumption was 43.9MB. Max. memory is 16.1GB. [2024-11-28 02:08:04,815 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 117.4MB. Free memory is still 72.2MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:08:04,815 INFO L158 Benchmark]: CACSL2BoogieTranslator took 240.84ms. Allocated memory is still 142.6MB. Free memory was 117.3MB in the beginning and 106.8MB in the end (delta: 10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:08:04,817 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.36ms. Allocated memory is still 142.6MB. Free memory was 106.8MB in the beginning and 105.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:08:04,818 INFO L158 Benchmark]: Boogie Preprocessor took 52.29ms. Allocated memory is still 142.6MB. Free memory was 105.7MB in the beginning and 104.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:08:04,818 INFO L158 Benchmark]: RCFGBuilder took 348.86ms. Allocated memory is still 142.6MB. Free memory was 104.5MB in the beginning and 93.1MB in the end (delta: 11.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:08:04,818 INFO L158 Benchmark]: TraceAbstraction took 70493.86ms. Allocated memory was 142.6MB in the beginning and 696.3MB in the end (delta: 553.6MB). Free memory was 92.5MB in the beginning and 634.8MB in the end (delta: -542.3MB). Peak memory consumption was 400.4MB. Max. memory is 16.1GB. [2024-11-28 02:08:04,818 INFO L158 Benchmark]: Witness Printer took 107.02ms. Allocated memory is still 696.3MB. Free memory was 634.8MB in the beginning and 626.8MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:08:04,822 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 117.4MB. Free memory is still 72.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 240.84ms. Allocated memory is still 142.6MB. Free memory was 117.3MB in the beginning and 106.8MB in the end (delta: 10.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.36ms. Allocated memory is still 142.6MB. Free memory was 106.8MB in the beginning and 105.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 52.29ms. Allocated memory is still 142.6MB. Free memory was 105.7MB in the beginning and 104.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 348.86ms. Allocated memory is still 142.6MB. Free memory was 104.5MB in the beginning and 93.1MB in the end (delta: 11.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 70493.86ms. Allocated memory was 142.6MB in the beginning and 696.3MB in the end (delta: 553.6MB). Free memory was 92.5MB in the beginning and 634.8MB in the end (delta: -542.3MB). Peak memory consumption was 400.4MB. Max. memory is 16.1GB. * Witness Printer took 107.02ms. Allocated memory is still 696.3MB. Free memory was 634.8MB in the beginning and 626.8MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. 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: 52.5s, OverallIterations: 34, TraceHistogramMax: 14, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.1s, AutomataDifference: 16.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2480 SdHoareTripleChecker+Valid, 9.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2375 mSDsluCounter, 9993 SdHoareTripleChecker+Invalid, 7.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8702 mSDsCounter, 852 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 11515 IncrementalHoareTripleChecker+Invalid, 12367 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 852 mSolverCounterUnsat, 1291 mSDtfsCounter, 11515 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5444 GetRequests, 4530 SyntacticMatches, 154 SemanticMatches, 760 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12304 ImplicationChecksByTransitivity, 13.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=416occurred in iteration=26, InterpolantAutomatonStates: 555, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 34 MinimizatonAttempts, 1209 StatesRemovedByMinimization, 33 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 27.1s InterpolantComputationTime, 5468 NumberOfCodeBlocks, 4916 NumberOfCodeBlocksAsserted, 100 NumberOfCheckSat, 7664 ConstructedInterpolants, 0 QuantifiedInterpolants, 14515 SizeOfPredicates, 56 NumberOfNonLiveVariables, 4737 ConjunctsInSsa, 316 ConjunctsInUnsatCore, 76 InterpolantComputations, 16 PerfectInterpolantSequences, 16211/18892 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 02:08:04,851 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c40460-a500-4bb8-a2d4-d755488251af/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE