./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive/Fibonacci04-overflow.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_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/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_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive/Fibonacci04-overflow.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/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_2472abbf-fa07-43df-bd2f-a80acc316c40/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 a4783e070fd2491b45504d9f6f3060ee7c5288027d9d113e851641208eae29b1 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:11:55,870 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:11:55,988 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-28 03:11:55,995 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:11:55,995 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:11:56,025 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:11:56,026 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:11:56,026 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:11:56,027 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:11:56,027 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:11:56,027 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:11:56,027 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:11:56,028 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:11:56,028 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:11:56,028 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:11:56,028 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:11:56,029 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:11:56,029 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:11:56,029 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:11:56,029 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:11:56,029 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:11:56,030 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:11:56,030 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:11:56,030 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:11:56,030 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-28 03:11:56,030 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 03:11:56,030 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:11:56,030 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:11:56,031 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:11:56,031 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:11:56,031 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:11:56,031 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:11:56,031 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:11:56,031 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:11:56,031 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:11:56,032 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:11:56,032 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:11:56,032 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:11:56,032 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:11:56,032 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:11:56,032 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:11:56,032 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:11:56,033 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:11:56,033 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:11:56,033 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:11:56,033 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:11:56,033 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:11:56,033 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:11:56,033 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:11:56,033 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:11:56,034 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_2472abbf-fa07-43df-bd2f-a80acc316c40/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 -> a4783e070fd2491b45504d9f6f3060ee7c5288027d9d113e851641208eae29b1 [2024-11-28 03:11:56,448 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:11:56,460 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:11:56,465 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:11:56,467 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:11:56,467 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:11:56,470 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/recursive/Fibonacci04-overflow.c [2024-11-28 03:11:59,949 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/data/6d2bb30f7/575afe7cd7dd4fb7891db767e52cf25c/FLAG00c9a824b [2024-11-28 03:12:00,264 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:12:00,265 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/sv-benchmarks/c/recursive/Fibonacci04-overflow.c [2024-11-28 03:12:00,281 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/data/6d2bb30f7/575afe7cd7dd4fb7891db767e52cf25c/FLAG00c9a824b [2024-11-28 03:12:00,324 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/data/6d2bb30f7/575afe7cd7dd4fb7891db767e52cf25c [2024-11-28 03:12:00,327 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:12:00,330 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:12:00,335 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:12:00,335 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:12:00,343 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:12:00,347 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:12:00" (1/1) ... [2024-11-28 03:12:00,348 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1437f1ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:00, skipping insertion in model container [2024-11-28 03:12:00,349 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:12:00" (1/1) ... [2024-11-28 03:12:00,368 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:12:00,610 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:12:00,626 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:12:00,646 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:12:00,671 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:12:00,672 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:00 WrapperNode [2024-11-28 03:12:00,673 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:12:00,674 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:12:00,674 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:12:00,675 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:12:00,685 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:00" (1/1) ... [2024-11-28 03:12:00,693 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:00" (1/1) ... [2024-11-28 03:12:00,716 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 24 [2024-11-28 03:12:00,718 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:12:00,718 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:12:00,719 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:12:00,719 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:12:00,732 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:00" (1/1) ... [2024-11-28 03:12:00,732 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:00" (1/1) ... [2024-11-28 03:12:00,733 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:00" (1/1) ... [2024-11-28 03:12:00,753 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-28 03:12:00,753 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:00" (1/1) ... [2024-11-28 03:12:00,754 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:00" (1/1) ... [2024-11-28 03:12:00,758 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:00" (1/1) ... [2024-11-28 03:12:00,761 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:00" (1/1) ... [2024-11-28 03:12:00,767 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:00" (1/1) ... [2024-11-28 03:12:00,768 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:00" (1/1) ... [2024-11-28 03:12:00,769 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:00" (1/1) ... [2024-11-28 03:12:00,770 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:12:00,774 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:12:00,774 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:12:00,774 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:12:00,776 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:00" (1/1) ... [2024-11-28 03:12:00,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:12:00,809 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:12:00,829 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:12:00,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:12:00,860 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2024-11-28 03:12:00,860 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2024-11-28 03:12:00,860 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:12:00,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:12:00,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:12:00,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:12:00,931 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:12:00,934 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:12:01,101 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-11-28 03:12:01,101 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:12:01,113 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:12:01,113 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-28 03:12:01,113 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:12:01 BoogieIcfgContainer [2024-11-28 03:12:01,113 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:12:01,116 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:12:01,117 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:12:01,126 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:12:01,126 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:12:00" (1/3) ... [2024-11-28 03:12:01,127 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bfa7c19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:12:01, skipping insertion in model container [2024-11-28 03:12:01,127 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:12:00" (2/3) ... [2024-11-28 03:12:01,130 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bfa7c19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:12:01, skipping insertion in model container [2024-11-28 03:12:01,131 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:12:01" (3/3) ... [2024-11-28 03:12:01,133 INFO L128 eAbstractionObserver]: Analyzing ICFG Fibonacci04-overflow.c [2024-11-28 03:12:01,157 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:12:01,160 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Fibonacci04-overflow.c that has 2 procedures, 31 locations, 1 initial locations, 0 loop locations, and 6 error locations. [2024-11-28 03:12:01,251 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:12:01,272 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;@24b87dc2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:12:01,272 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-28 03:12:01,277 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 20 states have (on average 1.45) internal successors, (29), 26 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-28 03:12:01,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-28 03:12:01,286 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:12:01,286 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:12:01,287 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:12:01,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:01,296 INFO L85 PathProgramCache]: Analyzing trace with hash -106871919, now seen corresponding path program 1 times [2024-11-28 03:12:01,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:12:01,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719577571] [2024-11-28 03:12:01,306 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:12:01,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:12:01,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:12:01,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:12:01,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:12:01,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719577571] [2024-11-28 03:12:01,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719577571] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:12:01,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:12:01,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:12:01,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354014600] [2024-11-28 03:12:01,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:12:01,590 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 03:12:01,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:12:01,621 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 03:12:01,621 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:12:01,624 INFO L87 Difference]: Start difference. First operand has 31 states, 20 states have (on average 1.45) internal successors, (29), 26 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:12:01,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:12:01,709 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2024-11-28 03:12:01,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 03:12:01,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-11-28 03:12:01,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:12:01,721 INFO L225 Difference]: With dead ends: 36 [2024-11-28 03:12:01,721 INFO L226 Difference]: Without dead ends: 24 [2024-11-28 03:12:01,729 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 03:12:01,735 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 11 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:12:01,736 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 40 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:12:01,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-11-28 03:12:01,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2024-11-28 03:12:01,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 18 states have internal predecessors, (20), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:12:01,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2024-11-28 03:12:01,786 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 7 [2024-11-28 03:12:01,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:12:01,786 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2024-11-28 03:12:01,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:12:01,787 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2024-11-28 03:12:01,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-28 03:12:01,790 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:12:01,790 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:12:01,791 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:12:01,791 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:12:01,792 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:01,792 INFO L85 PathProgramCache]: Analyzing trace with hash 981937849, now seen corresponding path program 1 times [2024-11-28 03:12:01,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:12:01,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257246550] [2024-11-28 03:12:01,793 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:12:01,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:12:01,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:12:01,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:12:01,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:12:01,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257246550] [2024-11-28 03:12:01,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257246550] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:12:01,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:12:01,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:12:01,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485873611] [2024-11-28 03:12:01,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:12:01,950 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:12:01,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:12:01,951 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:12:01,951 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:12:01,952 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:12:02,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:12:02,079 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2024-11-28 03:12:02,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:12:02,080 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-28 03:12:02,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:12:02,082 INFO L225 Difference]: With dead ends: 24 [2024-11-28 03:12:02,082 INFO L226 Difference]: Without dead ends: 22 [2024-11-28 03:12:02,083 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 03:12:02,084 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 26 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:12:02,087 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 29 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:12:02,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-11-28 03:12:02,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2024-11-28 03:12:02,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 16 states have internal predecessors, (18), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:12:02,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2024-11-28 03:12:02,102 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 8 [2024-11-28 03:12:02,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:12:02,102 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2024-11-28 03:12:02,102 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 03:12:02,102 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2024-11-28 03:12:02,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-28 03:12:02,106 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:12:02,107 INFO L218 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:12:02,107 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:12:02,107 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:12:02,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:02,108 INFO L85 PathProgramCache]: Analyzing trace with hash -590814878, now seen corresponding path program 1 times [2024-11-28 03:12:02,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:12:02,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325439753] [2024-11-28 03:12:02,108 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:12:02,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:12:02,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:12:02,410 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-28 03:12:02,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:12:02,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325439753] [2024-11-28 03:12:02,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325439753] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:12:02,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:12:02,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:12:02,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704296295] [2024-11-28 03:12:02,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:12:02,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:12:02,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:12:02,416 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:12:02,416 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:12:02,417 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:12:02,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:12:02,476 INFO L93 Difference]: Finished difference Result 34 states and 42 transitions. [2024-11-28 03:12:02,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:12:02,477 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2024-11-28 03:12:02,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:12:02,478 INFO L225 Difference]: With dead ends: 34 [2024-11-28 03:12:02,478 INFO L226 Difference]: Without dead ends: 32 [2024-11-28 03:12:02,478 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:12:02,479 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 4 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:12:02,479 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 52 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:12:02,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-28 03:12:02,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2024-11-28 03:12:02,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 23 states have internal predecessors, (25), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-28 03:12:02,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2024-11-28 03:12:02,496 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 29 [2024-11-28 03:12:02,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:12:02,498 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2024-11-28 03:12:02,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 5 states have internal predecessors, (14), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:12:02,498 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2024-11-28 03:12:02,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-28 03:12:02,500 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:12:02,500 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] [2024-11-28 03:12:02,500 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:12:02,500 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:12:02,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:02,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1274820555, now seen corresponding path program 1 times [2024-11-28 03:12:02,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:12:02,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907759874] [2024-11-28 03:12:02,501 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:12:02,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:12:02,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:12:02,651 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 03:12:02,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:12:02,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907759874] [2024-11-28 03:12:02,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907759874] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:12:02,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942796192] [2024-11-28 03:12:02,652 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:12:02,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:12:02,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:12:02,656 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:12:02,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:12:02,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:12:02,718 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 03:12:02,726 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:12:02,864 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 03:12:02,865 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:12:03,089 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 03:12:03,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942796192] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:12:03,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:12:03,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2024-11-28 03:12:03,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51868621] [2024-11-28 03:12:03,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:12:03,092 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 03:12:03,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:12:03,093 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 03:12:03,093 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:12:03,093 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-28 03:12:03,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:12:03,578 INFO L93 Difference]: Finished difference Result 90 states and 128 transitions. [2024-11-28 03:12:03,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 03:12:03,579 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) Word has length 24 [2024-11-28 03:12:03,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:12:03,598 INFO L225 Difference]: With dead ends: 90 [2024-11-28 03:12:03,598 INFO L226 Difference]: Without dead ends: 64 [2024-11-28 03:12:03,600 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2024-11-28 03:12:03,601 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 102 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:12:03,601 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 94 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:12:03,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-28 03:12:03,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 52. [2024-11-28 03:12:03,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 38 states have (on average 1.105263157894737) internal successors, (42), 41 states have internal predecessors, (42), 7 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (18), 8 states have call predecessors, (18), 6 states have call successors, (18) [2024-11-28 03:12:03,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 67 transitions. [2024-11-28 03:12:03,636 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 67 transitions. Word has length 24 [2024-11-28 03:12:03,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:12:03,637 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 67 transitions. [2024-11-28 03:12:03,638 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-28 03:12:03,638 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 67 transitions. [2024-11-28 03:12:03,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-28 03:12:03,640 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:12:03,640 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] [2024-11-28 03:12:03,653 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 03:12:03,841 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:12:03,841 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:12:03,842 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:03,842 INFO L85 PathProgramCache]: Analyzing trace with hash -254150789, now seen corresponding path program 2 times [2024-11-28 03:12:03,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:12:03,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44470991] [2024-11-28 03:12:03,842 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:12:03,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:12:03,867 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:12:03,867 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:12:04,077 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 03:12:04,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:12:04,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44470991] [2024-11-28 03:12:04,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44470991] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:12:04,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263064284] [2024-11-28 03:12:04,078 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:12:04,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:12:04,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:12:04,080 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:12:04,085 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 03:12:04,140 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:12:04,141 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:12:04,143 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 03:12:04,144 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:12:04,221 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-28 03:12:04,221 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:12:04,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263064284] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:12:04,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:12:04,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-28 03:12:04,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042676400] [2024-11-28 03:12:04,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:12:04,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:12:04,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:12:04,223 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:12:04,223 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-28 03:12:04,224 INFO L87 Difference]: Start difference. First operand 52 states and 67 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), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:12:04,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:12:04,274 INFO L93 Difference]: Finished difference Result 59 states and 75 transitions. [2024-11-28 03:12:04,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:12:04,275 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), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2024-11-28 03:12:04,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:12:04,276 INFO L225 Difference]: With dead ends: 59 [2024-11-28 03:12:04,276 INFO L226 Difference]: Without dead ends: 58 [2024-11-28 03:12:04,277 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 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 03:12:04,278 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 3 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:12:04,278 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 61 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:12:04,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-11-28 03:12:04,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2024-11-28 03:12:04,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 40 states have (on average 1.1) internal successors, (44), 42 states have internal predecessors, (44), 7 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (18), 9 states have call predecessors, (18), 6 states have call successors, (18) [2024-11-28 03:12:04,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2024-11-28 03:12:04,309 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 24 [2024-11-28 03:12:04,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:12:04,309 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2024-11-28 03:12:04,313 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), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:12:04,313 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2024-11-28 03:12:04,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-28 03:12:04,314 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:12:04,314 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:12:04,323 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 03:12:04,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:12:04,515 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:12:04,516 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:04,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1092136320, now seen corresponding path program 1 times [2024-11-28 03:12:04,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:12:04,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921077768] [2024-11-28 03:12:04,516 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:12:04,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:12:04,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:12:04,633 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-28 03:12:04,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:12:04,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921077768] [2024-11-28 03:12:04,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921077768] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:12:04,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578157118] [2024-11-28 03:12:04,634 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:12:04,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:12:04,635 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:12:04,637 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:12:04,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 03:12:04,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:12:04,694 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 03:12:04,696 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:12:04,787 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-28 03:12:04,788 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 03:12:04,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578157118] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:12:04,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 03:12:04,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2024-11-28 03:12:04,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544544795] [2024-11-28 03:12:04,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:12:04,789 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 03:12:04,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:12:04,790 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 03:12:04,790 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:12:04,790 INFO L87 Difference]: Start difference. First operand 54 states and 69 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:12:04,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:12:04,856 INFO L93 Difference]: Finished difference Result 81 states and 116 transitions. [2024-11-28 03:12:04,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 03:12:04,857 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 31 [2024-11-28 03:12:04,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:12:04,859 INFO L225 Difference]: With dead ends: 81 [2024-11-28 03:12:04,859 INFO L226 Difference]: Without dead ends: 80 [2024-11-28 03:12:04,860 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-11-28 03:12:04,861 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 2 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:12:04,861 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 80 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:12:04,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-11-28 03:12:04,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 63. [2024-11-28 03:12:04,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 47 states have (on average 1.0851063829787233) internal successors, (51), 49 states have internal predecessors, (51), 8 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (27), 11 states have call predecessors, (27), 7 states have call successors, (27) [2024-11-28 03:12:04,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 86 transitions. [2024-11-28 03:12:04,884 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 86 transitions. Word has length 31 [2024-11-28 03:12:04,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:12:04,885 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 86 transitions. [2024-11-28 03:12:04,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:12:04,885 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 86 transitions. [2024-11-28 03:12:04,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-28 03:12:04,887 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:12:04,887 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-28 03:12:04,899 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 03:12:05,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:12:05,088 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:12:05,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:05,089 INFO L85 PathProgramCache]: Analyzing trace with hash -940023341, now seen corresponding path program 1 times [2024-11-28 03:12:05,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:12:05,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805424413] [2024-11-28 03:12:05,089 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:12:05,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:12:05,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:12:05,404 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-11-28 03:12:05,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:12:05,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805424413] [2024-11-28 03:12:05,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805424413] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:12:05,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [931161034] [2024-11-28 03:12:05,404 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:12:05,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:12:05,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:12:05,410 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:12:05,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 03:12:05,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:12:05,483 INFO L256 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 03:12:05,486 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:12:05,663 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-11-28 03:12:05,663 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:12:05,986 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-11-28 03:12:05,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [931161034] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:12:05,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:12:05,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 7] total 15 [2024-11-28 03:12:05,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556007414] [2024-11-28 03:12:05,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:12:05,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 03:12:05,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:12:05,988 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 03:12:05,988 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2024-11-28 03:12:05,988 INFO L87 Difference]: Start difference. First operand 63 states and 86 transitions. Second operand has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 16 states have internal predecessors, (44), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (9), 9 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-28 03:12:06,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:12:06,317 INFO L93 Difference]: Finished difference Result 140 states and 216 transitions. [2024-11-28 03:12:06,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 03:12:06,318 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 16 states have internal predecessors, (44), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (9), 9 states have call predecessors, (9), 4 states have call successors, (9) Word has length 51 [2024-11-28 03:12:06,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:12:06,326 INFO L225 Difference]: With dead ends: 140 [2024-11-28 03:12:06,326 INFO L226 Difference]: Without dead ends: 138 [2024-11-28 03:12:06,327 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 93 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2024-11-28 03:12:06,328 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 14 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:12:06,329 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 185 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:12:06,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-28 03:12:06,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 97. [2024-11-28 03:12:06,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 75 states have (on average 1.08) internal successors, (81), 74 states have internal predecessors, (81), 11 states have call successors, (11), 2 states have call predecessors, (11), 9 states have return successors, (66), 20 states have call predecessors, (66), 10 states have call successors, (66) [2024-11-28 03:12:06,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 158 transitions. [2024-11-28 03:12:06,379 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 158 transitions. Word has length 51 [2024-11-28 03:12:06,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:12:06,380 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 158 transitions. [2024-11-28 03:12:06,380 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.933333333333333) internal successors, (44), 16 states have internal predecessors, (44), 4 states have call successors, (5), 1 states have call predecessors, (5), 5 states have return successors, (9), 9 states have call predecessors, (9), 4 states have call successors, (9) [2024-11-28 03:12:06,380 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 158 transitions. [2024-11-28 03:12:06,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2024-11-28 03:12:06,388 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:12:06,388 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1] [2024-11-28 03:12:06,400 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 03:12:06,589 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:12:06,589 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:12:06,590 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:06,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1245504788, now seen corresponding path program 1 times [2024-11-28 03:12:06,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:12:06,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607673319] [2024-11-28 03:12:06,590 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:12:06,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:12:06,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:12:06,934 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 38 proven. 80 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-11-28 03:12:06,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:12:06,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607673319] [2024-11-28 03:12:06,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607673319] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:12:06,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126282476] [2024-11-28 03:12:06,935 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:12:06,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:12:06,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:12:06,944 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:12:06,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 03:12:07,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:12:07,020 INFO L256 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 03:12:07,023 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:12:07,217 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 50 proven. 84 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-28 03:12:07,218 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:12:07,814 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 50 proven. 87 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-28 03:12:07,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2126282476] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:12:07,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:12:07,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 11] total 16 [2024-11-28 03:12:07,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376133961] [2024-11-28 03:12:07,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:12:07,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 03:12:07,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:12:07,818 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 03:12:07,819 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2024-11-28 03:12:07,819 INFO L87 Difference]: Start difference. First operand 97 states and 158 transitions. Second operand has 16 states, 16 states have (on average 5.0) internal successors, (80), 16 states have internal predecessors, (80), 10 states have call successors, (14), 1 states have call predecessors, (14), 5 states have return successors, (14), 7 states have call predecessors, (14), 10 states have call successors, (14) [2024-11-28 03:12:08,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:12:08,127 INFO L93 Difference]: Finished difference Result 173 states and 298 transitions. [2024-11-28 03:12:08,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 03:12:08,130 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.0) internal successors, (80), 16 states have internal predecessors, (80), 10 states have call successors, (14), 1 states have call predecessors, (14), 5 states have return successors, (14), 7 states have call predecessors, (14), 10 states have call successors, (14) Word has length 81 [2024-11-28 03:12:08,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:12:08,131 INFO L225 Difference]: With dead ends: 173 [2024-11-28 03:12:08,132 INFO L226 Difference]: Without dead ends: 79 [2024-11-28 03:12:08,138 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 155 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=164, Invalid=388, Unknown=0, NotChecked=0, Total=552 [2024-11-28 03:12:08,139 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 103 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:12:08,139 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 69 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:12:08,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2024-11-28 03:12:08,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 69. [2024-11-28 03:12:08,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 54 states have (on average 1.1111111111111112) internal successors, (60), 52 states have internal predecessors, (60), 7 states have call successors, (7), 4 states have call predecessors, (7), 6 states have return successors, (26), 12 states have call predecessors, (26), 6 states have call successors, (26) [2024-11-28 03:12:08,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 93 transitions. [2024-11-28 03:12:08,156 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 93 transitions. Word has length 81 [2024-11-28 03:12:08,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:12:08,156 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 93 transitions. [2024-11-28 03:12:08,156 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.0) internal successors, (80), 16 states have internal predecessors, (80), 10 states have call successors, (14), 1 states have call predecessors, (14), 5 states have return successors, (14), 7 states have call predecessors, (14), 10 states have call successors, (14) [2024-11-28 03:12:08,157 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 93 transitions. [2024-11-28 03:12:08,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2024-11-28 03:12:08,161 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:12:08,161 INFO L218 NwaCegarLoop]: trace histogram [19, 17, 13, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 7, 7, 6, 4, 1, 1, 1, 1] [2024-11-28 03:12:08,173 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 03:12:08,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-28 03:12:08,365 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:12:08,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:08,366 INFO L85 PathProgramCache]: Analyzing trace with hash 683104460, now seen corresponding path program 2 times [2024-11-28 03:12:08,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:12:08,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850646833] [2024-11-28 03:12:08,366 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:12:08,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:12:08,439 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:12:08,440 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:12:08,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1021 backedges. 94 proven. 278 refuted. 0 times theorem prover too weak. 649 trivial. 0 not checked. [2024-11-28 03:12:08,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:12:08,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850646833] [2024-11-28 03:12:08,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850646833] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:12:08,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938150622] [2024-11-28 03:12:08,820 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:12:08,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:12:08,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:12:08,823 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:12:08,828 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 03:12:08,932 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:12:08,933 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:12:08,935 INFO L256 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:12:08,940 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:12:09,036 INFO L134 CoverageAnalysis]: Checked inductivity of 1021 backedges. 449 proven. 15 refuted. 0 times theorem prover too weak. 557 trivial. 0 not checked. [2024-11-28 03:12:09,036 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:12:09,603 INFO L134 CoverageAnalysis]: Checked inductivity of 1021 backedges. 95 proven. 328 refuted. 0 times theorem prover too weak. 598 trivial. 0 not checked. [2024-11-28 03:12:09,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938150622] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:12:09,604 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:12:09,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 14 [2024-11-28 03:12:09,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594281550] [2024-11-28 03:12:09,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:12:09,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 03:12:09,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:12:09,606 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 03:12:09,606 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-11-28 03:12:09,607 INFO L87 Difference]: Start difference. First operand 69 states and 93 transitions. Second operand has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 7 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (14), 5 states have call predecessors, (14), 7 states have call successors, (14) [2024-11-28 03:12:09,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:12:09,766 INFO L93 Difference]: Finished difference Result 128 states and 178 transitions. [2024-11-28 03:12:09,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 03:12:09,767 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 7 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (14), 5 states have call predecessors, (14), 7 states have call successors, (14) Word has length 174 [2024-11-28 03:12:09,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:12:09,770 INFO L225 Difference]: With dead ends: 128 [2024-11-28 03:12:09,770 INFO L226 Difference]: Without dead ends: 62 [2024-11-28 03:12:09,771 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 360 GetRequests, 340 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2024-11-28 03:12:09,772 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 34 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:12:09,774 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 61 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:12:09,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-28 03:12:09,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 60. [2024-11-28 03:12:09,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 47 states have (on average 1.1063829787234043) internal successors, (52), 45 states have internal predecessors, (52), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (14), 10 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-28 03:12:09,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 72 transitions. [2024-11-28 03:12:09,796 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 72 transitions. Word has length 174 [2024-11-28 03:12:09,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:12:09,796 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 72 transitions. [2024-11-28 03:12:09,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.928571428571429) internal successors, (69), 14 states have internal predecessors, (69), 7 states have call successors, (13), 2 states have call predecessors, (13), 5 states have return successors, (14), 5 states have call predecessors, (14), 7 states have call successors, (14) [2024-11-28 03:12:09,796 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 72 transitions. [2024-11-28 03:12:09,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-28 03:12:09,798 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:12:09,798 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 2, 1, 1, 1, 1] [2024-11-28 03:12:09,815 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 03:12:10,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:12:10,003 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:12:10,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:10,003 INFO L85 PathProgramCache]: Analyzing trace with hash -727176579, now seen corresponding path program 3 times [2024-11-28 03:12:10,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:12:10,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567418723] [2024-11-28 03:12:10,003 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:12:10,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:12:10,027 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-28 03:12:10,027 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:12:10,358 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 100 proven. 25 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2024-11-28 03:12:10,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:12:10,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567418723] [2024-11-28 03:12:10,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567418723] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:12:10,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343554404] [2024-11-28 03:12:10,359 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:12:10,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:12:10,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:12:10,361 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:12:10,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 03:12:10,438 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2024-11-28 03:12:10,438 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:12:10,440 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 03:12:10,444 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:12:10,617 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 111 proven. 6 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2024-11-28 03:12:10,617 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:12:11,241 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 111 proven. 6 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2024-11-28 03:12:11,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343554404] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:12:11,241 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:12:11,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 19 [2024-11-28 03:12:11,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470056136] [2024-11-28 03:12:11,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:12:11,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 03:12:11,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:12:11,245 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 03:12:11,245 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2024-11-28 03:12:11,246 INFO L87 Difference]: Start difference. First operand 60 states and 72 transitions. Second operand has 20 states, 19 states have (on average 3.210526315789474) internal successors, (61), 20 states have internal predecessors, (61), 5 states have call successors, (7), 1 states have call predecessors, (7), 6 states have return successors, (13), 12 states have call predecessors, (13), 5 states have call successors, (13) [2024-11-28 03:12:11,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:12:11,420 INFO L93 Difference]: Finished difference Result 63 states and 77 transitions. [2024-11-28 03:12:11,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 03:12:11,420 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.210526315789474) internal successors, (61), 20 states have internal predecessors, (61), 5 states have call successors, (7), 1 states have call predecessors, (7), 6 states have return successors, (13), 12 states have call predecessors, (13), 5 states have call successors, (13) Word has length 103 [2024-11-28 03:12:11,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:12:11,421 INFO L225 Difference]: With dead ends: 63 [2024-11-28 03:12:11,422 INFO L226 Difference]: Without dead ends: 62 [2024-11-28 03:12:11,422 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 191 SyntacticMatches, 7 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2024-11-28 03:12:11,423 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 3 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:12:11,423 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 226 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:12:11,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2024-11-28 03:12:11,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 55. [2024-11-28 03:12:11,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 43 states have (on average 1.069767441860465) internal successors, (46), 42 states have internal predecessors, (46), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (14), 8 states have call predecessors, (14), 5 states have call successors, (14) [2024-11-28 03:12:11,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 66 transitions. [2024-11-28 03:12:11,442 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 66 transitions. Word has length 103 [2024-11-28 03:12:11,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:12:11,446 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 66 transitions. [2024-11-28 03:12:11,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.210526315789474) internal successors, (61), 20 states have internal predecessors, (61), 5 states have call successors, (7), 1 states have call predecessors, (7), 6 states have return successors, (13), 12 states have call predecessors, (13), 5 states have call successors, (13) [2024-11-28 03:12:11,446 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 66 transitions. [2024-11-28 03:12:11,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-28 03:12:11,447 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:12:11,447 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 1, 1, 1, 1] [2024-11-28 03:12:11,458 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 03:12:11,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:12:11,648 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:12:11,649 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:11,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1067637415, now seen corresponding path program 2 times [2024-11-28 03:12:11,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:12:11,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014591928] [2024-11-28 03:12:11,649 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:12:11,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:12:11,675 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:12:11,676 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:12:12,032 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 72 proven. 159 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2024-11-28 03:12:12,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:12:12,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014591928] [2024-11-28 03:12:12,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014591928] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:12:12,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566371970] [2024-11-28 03:12:12,033 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:12:12,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:12:12,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:12:12,037 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:12:12,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 03:12:12,117 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:12:12,117 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:12:12,122 INFO L256 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-28 03:12:12,127 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:12:12,311 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 82 proven. 158 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2024-11-28 03:12:12,311 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:12:13,223 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 82 proven. 174 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-28 03:12:13,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566371970] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:12:13,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:12:13,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 15] total 20 [2024-11-28 03:12:13,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156418089] [2024-11-28 03:12:13,224 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:12:13,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 03:12:13,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:12:13,225 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 03:12:13,226 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2024-11-28 03:12:13,226 INFO L87 Difference]: Start difference. First operand 55 states and 66 transitions. Second operand has 20 states, 20 states have (on average 4.6) internal successors, (92), 20 states have internal predecessors, (92), 13 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (16), 7 states have call predecessors, (16), 13 states have call successors, (16) [2024-11-28 03:12:13,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:12:13,665 INFO L93 Difference]: Finished difference Result 133 states and 168 transitions. [2024-11-28 03:12:13,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 03:12:13,666 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.6) internal successors, (92), 20 states have internal predecessors, (92), 13 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (16), 7 states have call predecessors, (16), 13 states have call successors, (16) Word has length 104 [2024-11-28 03:12:13,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:12:13,667 INFO L225 Difference]: With dead ends: 133 [2024-11-28 03:12:13,667 INFO L226 Difference]: Without dead ends: 83 [2024-11-28 03:12:13,669 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 200 SyntacticMatches, 7 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=281, Invalid=711, Unknown=0, NotChecked=0, Total=992 [2024-11-28 03:12:13,671 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 179 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:12:13,672 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 80 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:12:13,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2024-11-28 03:12:13,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 73. [2024-11-28 03:12:13,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 58 states have (on average 1.0862068965517242) internal successors, (63), 56 states have internal predecessors, (63), 8 states have call successors, (8), 5 states have call predecessors, (8), 6 states have return successors, (17), 11 states have call predecessors, (17), 7 states have call successors, (17) [2024-11-28 03:12:13,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 88 transitions. [2024-11-28 03:12:13,689 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 88 transitions. Word has length 104 [2024-11-28 03:12:13,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:12:13,689 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 88 transitions. [2024-11-28 03:12:13,690 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.6) internal successors, (92), 20 states have internal predecessors, (92), 13 states have call successors, (15), 1 states have call predecessors, (15), 7 states have return successors, (16), 7 states have call predecessors, (16), 13 states have call successors, (16) [2024-11-28 03:12:13,692 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 88 transitions. [2024-11-28 03:12:13,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-28 03:12:13,695 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:12:13,695 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1] [2024-11-28 03:12:13,707 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 03:12:13,896 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:12:13,896 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:12:13,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:13,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1338589868, now seen corresponding path program 3 times [2024-11-28 03:12:13,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:12:13,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200859442] [2024-11-28 03:12:13,897 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:12:13,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:12:13,923 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-28 03:12:13,924 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:12:14,139 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 89 proven. 48 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-11-28 03:12:14,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:12:14,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200859442] [2024-11-28 03:12:14,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200859442] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:12:14,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586590098] [2024-11-28 03:12:14,140 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:12:14,140 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:12:14,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:12:14,142 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:12:14,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 03:12:14,223 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-28 03:12:14,223 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:12:14,224 INFO L256 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 03:12:14,228 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:12:14,299 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 130 proven. 20 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-28 03:12:14,299 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:12:14,783 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 95 proven. 36 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2024-11-28 03:12:14,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586590098] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:12:14,784 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:12:14,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 9] total 15 [2024-11-28 03:12:14,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514951751] [2024-11-28 03:12:14,784 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:12:14,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 03:12:14,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:12:14,786 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 03:12:14,786 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2024-11-28 03:12:14,787 INFO L87 Difference]: Start difference. First operand 73 states and 88 transitions. Second operand has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 7 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (15), 8 states have call predecessors, (15), 7 states have call successors, (15) [2024-11-28 03:12:15,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:12:15,006 INFO L93 Difference]: Finished difference Result 132 states and 162 transitions. [2024-11-28 03:12:15,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 03:12:15,007 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 7 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (15), 8 states have call predecessors, (15), 7 states have call successors, (15) Word has length 85 [2024-11-28 03:12:15,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:12:15,008 INFO L225 Difference]: With dead ends: 132 [2024-11-28 03:12:15,008 INFO L226 Difference]: Without dead ends: 64 [2024-11-28 03:12:15,009 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 163 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2024-11-28 03:12:15,011 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 27 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:12:15,014 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 91 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:12:15,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-28 03:12:15,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-11-28 03:12:15,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 51 states have (on average 1.0588235294117647) internal successors, (54), 49 states have internal predecessors, (54), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2024-11-28 03:12:15,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2024-11-28 03:12:15,026 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 85 [2024-11-28 03:12:15,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:12:15,027 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2024-11-28 03:12:15,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 7 states have call successors, (13), 2 states have call predecessors, (13), 6 states have return successors, (15), 8 states have call predecessors, (15), 7 states have call successors, (15) [2024-11-28 03:12:15,027 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2024-11-28 03:12:15,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2024-11-28 03:12:15,029 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:12:15,029 INFO L218 NwaCegarLoop]: trace histogram [16, 14, 13, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 3, 1, 1, 1, 1] [2024-11-28 03:12:15,042 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 03:12:15,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:12:15,233 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:12:15,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:15,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1466591626, now seen corresponding path program 4 times [2024-11-28 03:12:15,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:12:15,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036479475] [2024-11-28 03:12:15,234 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:12:15,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:12:15,275 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:12:15,276 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:12:16,144 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 78 proven. 135 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked. [2024-11-28 03:12:16,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:12:16,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036479475] [2024-11-28 03:12:16,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036479475] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:12:16,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228818367] [2024-11-28 03:12:16,145 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:12:16,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:12:16,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:12:16,147 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:12:16,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 03:12:16,262 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:12:16,263 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:12:16,265 INFO L256 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-28 03:12:16,268 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:12:16,545 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 78 proven. 135 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked. [2024-11-28 03:12:16,545 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:12:18,403 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 144 proven. 128 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2024-11-28 03:12:18,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228818367] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:12:18,404 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:12:18,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 17] total 26 [2024-11-28 03:12:18,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594421029] [2024-11-28 03:12:18,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:12:18,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-28 03:12:18,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:12:18,408 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-28 03:12:18,409 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=534, Unknown=0, NotChecked=0, Total=702 [2024-11-28 03:12:18,410 INFO L87 Difference]: Start difference. First operand 64 states and 72 transitions. Second operand has 27 states, 26 states have (on average 2.730769230769231) internal successors, (71), 27 states have internal predecessors, (71), 7 states have call successors, (8), 1 states have call predecessors, (8), 7 states have return successors, (18), 18 states have call predecessors, (18), 7 states have call successors, (18) [2024-11-28 03:12:18,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:12:18,811 INFO L93 Difference]: Finished difference Result 128 states and 180 transitions. [2024-11-28 03:12:18,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-28 03:12:18,812 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.730769230769231) internal successors, (71), 27 states have internal predecessors, (71), 7 states have call successors, (8), 1 states have call predecessors, (8), 7 states have return successors, (18), 18 states have call predecessors, (18), 7 states have call successors, (18) Word has length 149 [2024-11-28 03:12:18,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:12:18,816 INFO L225 Difference]: With dead ends: 128 [2024-11-28 03:12:18,816 INFO L226 Difference]: Without dead ends: 127 [2024-11-28 03:12:18,817 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 284 SyntacticMatches, 16 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 497 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=277, Invalid=913, Unknown=0, NotChecked=0, Total=1190 [2024-11-28 03:12:18,818 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 30 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:12:18,819 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 131 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:12:18,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2024-11-28 03:12:18,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 100. [2024-11-28 03:12:18,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 79 states have (on average 1.0379746835443038) internal successors, (82), 77 states have internal predecessors, (82), 11 states have call successors, (11), 6 states have call predecessors, (11), 9 states have return successors, (47), 16 states have call predecessors, (47), 10 states have call successors, (47) [2024-11-28 03:12:18,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 140 transitions. [2024-11-28 03:12:18,841 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 140 transitions. Word has length 149 [2024-11-28 03:12:18,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:12:18,842 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 140 transitions. [2024-11-28 03:12:18,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.730769230769231) internal successors, (71), 27 states have internal predecessors, (71), 7 states have call successors, (8), 1 states have call predecessors, (8), 7 states have return successors, (18), 18 states have call predecessors, (18), 7 states have call successors, (18) [2024-11-28 03:12:18,842 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 140 transitions. [2024-11-28 03:12:18,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2024-11-28 03:12:18,853 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:12:18,854 INFO L218 NwaCegarLoop]: trace histogram [50, 47, 40, 25, 25, 25, 25, 24, 24, 24, 24, 24, 23, 23, 23, 22, 15, 10, 1, 1, 1, 1] [2024-11-28 03:12:18,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-28 03:12:19,058 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:12:19,058 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:12:19,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:19,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1830112664, now seen corresponding path program 5 times [2024-11-28 03:12:19,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:12:19,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823956437] [2024-11-28 03:12:19,059 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:12:19,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:12:19,130 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2024-11-28 03:12:19,131 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:12:19,598 INFO L134 CoverageAnalysis]: Checked inductivity of 8155 backedges. 928 proven. 1251 refuted. 0 times theorem prover too weak. 5976 trivial. 0 not checked. [2024-11-28 03:12:19,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:12:19,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823956437] [2024-11-28 03:12:19,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823956437] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:12:19,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420373402] [2024-11-28 03:12:19,599 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:12:19,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:12:19,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:12:19,602 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:12:19,605 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 03:12:19,817 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2024-11-28 03:12:19,818 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:12:19,820 INFO L256 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 03:12:19,829 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:12:20,059 INFO L134 CoverageAnalysis]: Checked inductivity of 8155 backedges. 932 proven. 1245 refuted. 0 times theorem prover too weak. 5978 trivial. 0 not checked. [2024-11-28 03:12:20,059 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:12:21,791 INFO L134 CoverageAnalysis]: Checked inductivity of 8155 backedges. 930 proven. 1263 refuted. 0 times theorem prover too weak. 5962 trivial. 0 not checked. [2024-11-28 03:12:21,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420373402] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:12:21,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:12:21,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 16] total 22 [2024-11-28 03:12:21,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681942786] [2024-11-28 03:12:21,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:12:21,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-28 03:12:21,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:12:21,798 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-28 03:12:21,800 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2024-11-28 03:12:21,800 INFO L87 Difference]: Start difference. First operand 100 states and 140 transitions. Second operand has 22 states, 22 states have (on average 5.0) internal successors, (110), 22 states have internal predecessors, (110), 13 states have call successors, (19), 1 states have call predecessors, (19), 7 states have return successors, (21), 11 states have call predecessors, (21), 13 states have call successors, (21) [2024-11-28 03:12:22,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:12:22,287 INFO L93 Difference]: Finished difference Result 220 states and 333 transitions. [2024-11-28 03:12:22,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 03:12:22,288 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.0) internal successors, (110), 22 states have internal predecessors, (110), 13 states have call successors, (19), 1 states have call predecessors, (19), 7 states have return successors, (21), 11 states have call predecessors, (21), 13 states have call successors, (21) Word has length 477 [2024-11-28 03:12:22,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:12:22,290 INFO L225 Difference]: With dead ends: 220 [2024-11-28 03:12:22,290 INFO L226 Difference]: Without dead ends: 125 [2024-11-28 03:12:22,292 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 985 GetRequests, 944 SyntacticMatches, 7 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=368, Invalid=892, Unknown=0, NotChecked=0, Total=1260 [2024-11-28 03:12:22,292 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 92 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:12:22,293 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 102 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:12:22,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-11-28 03:12:22,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 109. [2024-11-28 03:12:22,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 87 states have (on average 1.0459770114942528) internal successors, (91), 84 states have internal predecessors, (91), 12 states have call successors, (12), 8 states have call predecessors, (12), 9 states have return successors, (44), 16 states have call predecessors, (44), 11 states have call successors, (44) [2024-11-28 03:12:22,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 147 transitions. [2024-11-28 03:12:22,307 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 147 transitions. Word has length 477 [2024-11-28 03:12:22,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:12:22,308 INFO L471 AbstractCegarLoop]: Abstraction has 109 states and 147 transitions. [2024-11-28 03:12:22,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.0) internal successors, (110), 22 states have internal predecessors, (110), 13 states have call successors, (19), 1 states have call predecessors, (19), 7 states have return successors, (21), 11 states have call predecessors, (21), 13 states have call successors, (21) [2024-11-28 03:12:22,308 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 147 transitions. [2024-11-28 03:12:22,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2024-11-28 03:12:22,314 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:12:22,314 INFO L218 NwaCegarLoop]: trace histogram [41, 39, 32, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 19, 19, 18, 12, 9, 1, 1, 1, 1] [2024-11-28 03:12:22,324 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-28 03:12:22,518 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:12:22,518 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:12:22,519 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:22,519 INFO L85 PathProgramCache]: Analyzing trace with hash -244677565, now seen corresponding path program 6 times [2024-11-28 03:12:22,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:12:22,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938036025] [2024-11-28 03:12:22,519 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:12:22,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:12:22,588 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2024-11-28 03:12:22,588 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:12:23,077 INFO L134 CoverageAnalysis]: Checked inductivity of 5461 backedges. 1204 proven. 79 refuted. 0 times theorem prover too weak. 4178 trivial. 0 not checked. [2024-11-28 03:12:23,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:12:23,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938036025] [2024-11-28 03:12:23,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938036025] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:12:23,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815379304] [2024-11-28 03:12:23,078 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:12:23,078 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:12:23,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:12:23,081 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:12:23,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 03:12:23,282 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s) [2024-11-28 03:12:23,282 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:12:23,285 INFO L256 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 03:12:23,298 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:12:23,469 INFO L134 CoverageAnalysis]: Checked inductivity of 5461 backedges. 1334 proven. 97 refuted. 0 times theorem prover too weak. 4030 trivial. 0 not checked. [2024-11-28 03:12:23,470 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:12:24,795 INFO L134 CoverageAnalysis]: Checked inductivity of 5461 backedges. 1334 proven. 106 refuted. 0 times theorem prover too weak. 4021 trivial. 0 not checked. [2024-11-28 03:12:24,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815379304] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:12:24,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:12:24,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 13] total 20 [2024-11-28 03:12:24,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414951482] [2024-11-28 03:12:24,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:12:24,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 03:12:24,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:12:24,799 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 03:12:24,800 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2024-11-28 03:12:24,800 INFO L87 Difference]: Start difference. First operand 109 states and 147 transitions. Second operand has 20 states, 20 states have (on average 4.85) internal successors, (97), 20 states have internal predecessors, (97), 10 states have call successors, (16), 1 states have call predecessors, (16), 8 states have return successors, (19), 10 states have call predecessors, (19), 10 states have call successors, (19) [2024-11-28 03:12:25,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:12:25,062 INFO L93 Difference]: Finished difference Result 206 states and 287 transitions. [2024-11-28 03:12:25,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 03:12:25,063 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.85) internal successors, (97), 20 states have internal predecessors, (97), 10 states have call successors, (16), 1 states have call predecessors, (16), 8 states have return successors, (19), 10 states have call predecessors, (19), 10 states have call successors, (19) Word has length 392 [2024-11-28 03:12:25,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:12:25,065 INFO L225 Difference]: With dead ends: 206 [2024-11-28 03:12:25,065 INFO L226 Difference]: Without dead ends: 102 [2024-11-28 03:12:25,067 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 803 GetRequests, 772 SyntacticMatches, 6 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=191, Invalid=511, Unknown=0, NotChecked=0, Total=702 [2024-11-28 03:12:25,068 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 69 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:12:25,068 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 98 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:12:25,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-28 03:12:25,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2024-11-28 03:12:25,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 80 states have (on average 1.05) internal successors, (84), 77 states have internal predecessors, (84), 11 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (29), 14 states have call predecessors, (29), 10 states have call successors, (29) [2024-11-28 03:12:25,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 124 transitions. [2024-11-28 03:12:25,083 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 124 transitions. Word has length 392 [2024-11-28 03:12:25,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:12:25,083 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 124 transitions. [2024-11-28 03:12:25,084 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.85) internal successors, (97), 20 states have internal predecessors, (97), 10 states have call successors, (16), 1 states have call predecessors, (16), 8 states have return successors, (19), 10 states have call predecessors, (19), 10 states have call successors, (19) [2024-11-28 03:12:25,084 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 124 transitions. [2024-11-28 03:12:25,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2024-11-28 03:12:25,089 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:12:25,089 INFO L218 NwaCegarLoop]: trace histogram [32, 30, 26, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 14, 10, 6, 1, 1, 1, 1] [2024-11-28 03:12:25,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-28 03:12:25,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-28 03:12:25,290 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:12:25,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:25,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1370500518, now seen corresponding path program 7 times [2024-11-28 03:12:25,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:12:25,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915328855] [2024-11-28 03:12:25,291 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:12:25,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:12:25,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:12:26,044 INFO L134 CoverageAnalysis]: Checked inductivity of 3282 backedges. 521 proven. 1076 refuted. 0 times theorem prover too weak. 1685 trivial. 0 not checked. [2024-11-28 03:12:26,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:12:26,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915328855] [2024-11-28 03:12:26,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915328855] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:12:26,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [266540773] [2024-11-28 03:12:26,045 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:12:26,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:12:26,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:12:26,047 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:12:26,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 03:12:26,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:12:26,232 INFO L256 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-28 03:12:26,239 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:12:26,496 INFO L134 CoverageAnalysis]: Checked inductivity of 3282 backedges. 613 proven. 1181 refuted. 0 times theorem prover too weak. 1488 trivial. 0 not checked. [2024-11-28 03:12:26,496 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:12:29,033 INFO L134 CoverageAnalysis]: Checked inductivity of 3282 backedges. 613 proven. 1253 refuted. 0 times theorem prover too weak. 1416 trivial. 0 not checked. [2024-11-28 03:12:29,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [266540773] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:12:29,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:12:29,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 23] total 28 [2024-11-28 03:12:29,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896734784] [2024-11-28 03:12:29,034 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:12:29,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-28 03:12:29,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:12:29,037 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-28 03:12:29,037 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=622, Unknown=0, NotChecked=0, Total=756 [2024-11-28 03:12:29,038 INFO L87 Difference]: Start difference. First operand 100 states and 124 transitions. Second operand has 28 states, 28 states have (on average 5.321428571428571) internal successors, (149), 28 states have internal predecessors, (149), 21 states have call successors, (25), 1 states have call predecessors, (25), 11 states have return successors, (32), 13 states have call predecessors, (32), 21 states have call successors, (32) [2024-11-28 03:12:29,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:12:29,747 INFO L93 Difference]: Finished difference Result 247 states and 341 transitions. [2024-11-28 03:12:29,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-28 03:12:29,748 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.321428571428571) internal successors, (149), 28 states have internal predecessors, (149), 21 states have call successors, (25), 1 states have call predecessors, (25), 11 states have return successors, (32), 13 states have call predecessors, (32), 21 states have call successors, (32) Word has length 306 [2024-11-28 03:12:29,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:12:29,751 INFO L225 Difference]: With dead ends: 247 [2024-11-28 03:12:29,751 INFO L226 Difference]: Without dead ends: 152 [2024-11-28 03:12:29,754 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 655 GetRequests, 597 SyntacticMatches, 11 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 544 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=604, Invalid=1748, Unknown=0, NotChecked=0, Total=2352 [2024-11-28 03:12:29,755 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 267 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:12:29,756 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [267 Valid, 141 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:12:29,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2024-11-28 03:12:29,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 130. [2024-11-28 03:12:29,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 105 states have (on average 1.0476190476190477) internal successors, (110), 101 states have internal predecessors, (110), 15 states have call successors, (15), 11 states have call predecessors, (15), 9 states have return successors, (37), 17 states have call predecessors, (37), 14 states have call successors, (37) [2024-11-28 03:12:29,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 162 transitions. [2024-11-28 03:12:29,785 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 162 transitions. Word has length 306 [2024-11-28 03:12:29,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:12:29,786 INFO L471 AbstractCegarLoop]: Abstraction has 130 states and 162 transitions. [2024-11-28 03:12:29,786 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.321428571428571) internal successors, (149), 28 states have internal predecessors, (149), 21 states have call successors, (25), 1 states have call predecessors, (25), 11 states have return successors, (32), 13 states have call predecessors, (32), 21 states have call successors, (32) [2024-11-28 03:12:29,786 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 162 transitions. [2024-11-28 03:12:29,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2024-11-28 03:12:29,789 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:12:29,790 INFO L218 NwaCegarLoop]: trace histogram [32, 30, 26, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 14, 10, 6, 1, 1, 1, 1] [2024-11-28 03:12:29,802 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-28 03:12:29,994 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 03:12:29,994 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:12:29,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:29,995 INFO L85 PathProgramCache]: Analyzing trace with hash -303289904, now seen corresponding path program 8 times [2024-11-28 03:12:29,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:12:29,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241172075] [2024-11-28 03:12:29,995 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:12:29,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:12:30,069 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:12:30,070 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:12:30,686 INFO L134 CoverageAnalysis]: Checked inductivity of 3282 backedges. 554 proven. 990 refuted. 0 times theorem prover too weak. 1738 trivial. 0 not checked. [2024-11-28 03:12:30,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:12:30,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241172075] [2024-11-28 03:12:30,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241172075] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:12:30,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1520589769] [2024-11-28 03:12:30,687 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:12:30,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:12:30,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:12:30,690 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:12:30,695 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 03:12:30,908 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:12:30,908 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:12:30,911 INFO L256 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 03:12:30,917 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:12:31,115 INFO L134 CoverageAnalysis]: Checked inductivity of 3282 backedges. 1858 proven. 484 refuted. 0 times theorem prover too weak. 940 trivial. 0 not checked. [2024-11-28 03:12:31,115 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:12:33,186 INFO L134 CoverageAnalysis]: Checked inductivity of 3282 backedges. 551 proven. 1101 refuted. 0 times theorem prover too weak. 1630 trivial. 0 not checked. [2024-11-28 03:12:33,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1520589769] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:12:33,187 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:12:33,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 19] total 24 [2024-11-28 03:12:33,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145926524] [2024-11-28 03:12:33,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:12:33,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-28 03:12:33,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:12:33,191 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-28 03:12:33,192 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2024-11-28 03:12:33,192 INFO L87 Difference]: Start difference. First operand 130 states and 162 transitions. Second operand has 24 states, 24 states have (on average 5.583333333333333) internal successors, (134), 24 states have internal predecessors, (134), 18 states have call successors, (23), 2 states have call predecessors, (23), 10 states have return successors, (28), 10 states have call predecessors, (28), 18 states have call successors, (28) [2024-11-28 03:12:33,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:12:33,663 INFO L93 Difference]: Finished difference Result 243 states and 316 transitions. [2024-11-28 03:12:33,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 03:12:33,663 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 5.583333333333333) internal successors, (134), 24 states have internal predecessors, (134), 18 states have call successors, (23), 2 states have call predecessors, (23), 10 states have return successors, (28), 10 states have call predecessors, (28), 18 states have call successors, (28) Word has length 306 [2024-11-28 03:12:33,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:12:33,666 INFO L225 Difference]: With dead ends: 243 [2024-11-28 03:12:33,666 INFO L226 Difference]: Without dead ends: 118 [2024-11-28 03:12:33,669 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 642 GetRequests, 599 SyntacticMatches, 9 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=349, Invalid=911, Unknown=0, NotChecked=0, Total=1260 [2024-11-28 03:12:33,670 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 107 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:12:33,670 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 174 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:12:33,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-28 03:12:33,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 106. [2024-11-28 03:12:33,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 85 states have (on average 1.035294117647059) internal successors, (88), 83 states have internal predecessors, (88), 13 states have call successors, (13), 10 states have call predecessors, (13), 7 states have return successors, (26), 12 states have call predecessors, (26), 12 states have call successors, (26) [2024-11-28 03:12:33,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 127 transitions. [2024-11-28 03:12:33,687 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 127 transitions. Word has length 306 [2024-11-28 03:12:33,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:12:33,688 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 127 transitions. [2024-11-28 03:12:33,688 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 5.583333333333333) internal successors, (134), 24 states have internal predecessors, (134), 18 states have call successors, (23), 2 states have call predecessors, (23), 10 states have return successors, (28), 10 states have call predecessors, (28), 18 states have call successors, (28) [2024-11-28 03:12:33,688 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 127 transitions. [2024-11-28 03:12:33,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2024-11-28 03:12:33,694 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:12:33,694 INFO L218 NwaCegarLoop]: trace histogram [51, 50, 41, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 24, 16, 10, 1, 1, 1, 1] [2024-11-28 03:12:33,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-28 03:12:33,898 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 03:12:33,899 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:12:33,899 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:33,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1889793935, now seen corresponding path program 9 times [2024-11-28 03:12:33,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:12:33,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998784204] [2024-11-28 03:12:33,900 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:12:33,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:12:34,007 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2024-11-28 03:12:34,008 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:12:34,665 INFO L134 CoverageAnalysis]: Checked inductivity of 8820 backedges. 1737 proven. 1024 refuted. 0 times theorem prover too weak. 6059 trivial. 0 not checked. [2024-11-28 03:12:34,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:12:34,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998784204] [2024-11-28 03:12:34,666 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998784204] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:12:34,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741740053] [2024-11-28 03:12:34,666 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:12:34,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:12:34,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:12:34,669 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:12:34,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 03:12:34,976 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s) [2024-11-28 03:12:34,977 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:12:34,980 INFO L256 TraceCheckSpWp]: Trace formula consists of 704 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 03:12:34,989 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:12:35,184 INFO L134 CoverageAnalysis]: Checked inductivity of 8820 backedges. 1737 proven. 1024 refuted. 0 times theorem prover too weak. 6059 trivial. 0 not checked. [2024-11-28 03:12:35,185 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:12:37,015 INFO L134 CoverageAnalysis]: Checked inductivity of 8820 backedges. 1745 proven. 1063 refuted. 0 times theorem prover too weak. 6012 trivial. 0 not checked. [2024-11-28 03:12:37,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741740053] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:12:37,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:12:37,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 19] total 21 [2024-11-28 03:12:37,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691205087] [2024-11-28 03:12:37,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:12:37,017 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 03:12:37,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:12:37,017 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 03:12:37,018 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2024-11-28 03:12:37,018 INFO L87 Difference]: Start difference. First operand 106 states and 127 transitions. Second operand has 21 states, 21 states have (on average 5.714285714285714) internal successors, (120), 21 states have internal predecessors, (120), 12 states have call successors, (20), 1 states have call predecessors, (20), 9 states have return successors, (24), 15 states have call predecessors, (24), 12 states have call successors, (24) [2024-11-28 03:12:37,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:12:37,710 INFO L93 Difference]: Finished difference Result 297 states and 378 transitions. [2024-11-28 03:12:37,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-28 03:12:37,711 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.714285714285714) internal successors, (120), 21 states have internal predecessors, (120), 12 states have call successors, (20), 1 states have call predecessors, (20), 9 states have return successors, (24), 15 states have call predecessors, (24), 12 states have call successors, (24) Word has length 496 [2024-11-28 03:12:37,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:12:37,715 INFO L225 Difference]: With dead ends: 297 [2024-11-28 03:12:37,715 INFO L226 Difference]: Without dead ends: 170 [2024-11-28 03:12:37,717 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1038 GetRequests, 984 SyntacticMatches, 9 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=587, Invalid=1575, Unknown=0, NotChecked=0, Total=2162 [2024-11-28 03:12:37,718 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 199 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:12:37,718 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 122 Invalid, 423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:12:37,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-11-28 03:12:37,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 136. [2024-11-28 03:12:37,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 110 states have (on average 1.0454545454545454) internal successors, (115), 107 states have internal predecessors, (115), 17 states have call successors, (17), 14 states have call predecessors, (17), 8 states have return successors, (38), 14 states have call predecessors, (38), 16 states have call successors, (38) [2024-11-28 03:12:37,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 170 transitions. [2024-11-28 03:12:37,735 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 170 transitions. Word has length 496 [2024-11-28 03:12:37,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:12:37,736 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 170 transitions. [2024-11-28 03:12:37,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.714285714285714) internal successors, (120), 21 states have internal predecessors, (120), 12 states have call successors, (20), 1 states have call predecessors, (20), 9 states have return successors, (24), 15 states have call predecessors, (24), 12 states have call successors, (24) [2024-11-28 03:12:37,737 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 170 transitions. [2024-11-28 03:12:37,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2024-11-28 03:12:37,739 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:12:37,740 INFO L218 NwaCegarLoop]: trace histogram [35, 34, 28, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 17, 16, 11, 7, 1, 1, 1, 1] [2024-11-28 03:12:37,752 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-28 03:12:37,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 03:12:37,944 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:12:37,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:37,945 INFO L85 PathProgramCache]: Analyzing trace with hash 817405855, now seen corresponding path program 10 times [2024-11-28 03:12:37,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:12:37,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730130367] [2024-11-28 03:12:37,945 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:12:37,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:12:37,983 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:12:37,983 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:12:38,399 INFO L134 CoverageAnalysis]: Checked inductivity of 4050 backedges. 743 proven. 1095 refuted. 0 times theorem prover too weak. 2212 trivial. 0 not checked. [2024-11-28 03:12:38,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:12:38,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730130367] [2024-11-28 03:12:38,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730130367] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:12:38,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597551826] [2024-11-28 03:12:38,400 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:12:38,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:12:38,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:12:38,405 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:12:38,411 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 03:12:38,609 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:12:38,609 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:12:38,615 INFO L256 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-28 03:12:38,621 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:12:38,877 INFO L134 CoverageAnalysis]: Checked inductivity of 4050 backedges. 856 proven. 1214 refuted. 0 times theorem prover too weak. 1980 trivial. 0 not checked. [2024-11-28 03:12:38,878 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:12:41,270 INFO L134 CoverageAnalysis]: Checked inductivity of 4050 backedges. 856 proven. 1290 refuted. 0 times theorem prover too weak. 1904 trivial. 0 not checked. [2024-11-28 03:12:41,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597551826] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:12:41,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:12:41,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15, 23] total 28 [2024-11-28 03:12:41,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243668006] [2024-11-28 03:12:41,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:12:41,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-28 03:12:41,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:12:41,273 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-28 03:12:41,274 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=613, Unknown=0, NotChecked=0, Total=756 [2024-11-28 03:12:41,274 INFO L87 Difference]: Start difference. First operand 136 states and 170 transitions. Second operand has 28 states, 28 states have (on average 5.321428571428571) internal successors, (149), 28 states have internal predecessors, (149), 21 states have call successors, (25), 1 states have call predecessors, (25), 11 states have return successors, (32), 13 states have call predecessors, (32), 21 states have call successors, (32) [2024-11-28 03:12:41,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:12:41,865 INFO L93 Difference]: Finished difference Result 285 states and 373 transitions. [2024-11-28 03:12:41,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 03:12:41,866 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.321428571428571) internal successors, (149), 28 states have internal predecessors, (149), 21 states have call successors, (25), 1 states have call predecessors, (25), 11 states have return successors, (32), 13 states have call predecessors, (32), 21 states have call successors, (32) Word has length 339 [2024-11-28 03:12:41,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:12:41,872 INFO L225 Difference]: With dead ends: 285 [2024-11-28 03:12:41,873 INFO L226 Difference]: Without dead ends: 154 [2024-11-28 03:12:41,875 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 713 GetRequests, 661 SyntacticMatches, 11 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 515 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=480, Invalid=1326, Unknown=0, NotChecked=0, Total=1806 [2024-11-28 03:12:41,876 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 166 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:12:41,877 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 192 Invalid, 549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:12:41,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2024-11-28 03:12:41,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 145. [2024-11-28 03:12:41,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 117 states have (on average 1.0341880341880343) internal successors, (121), 115 states have internal predecessors, (121), 19 states have call successors, (19), 16 states have call predecessors, (19), 8 states have return successors, (38), 13 states have call predecessors, (38), 18 states have call successors, (38) [2024-11-28 03:12:41,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 178 transitions. [2024-11-28 03:12:41,909 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 178 transitions. Word has length 339 [2024-11-28 03:12:41,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:12:41,912 INFO L471 AbstractCegarLoop]: Abstraction has 145 states and 178 transitions. [2024-11-28 03:12:41,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.321428571428571) internal successors, (149), 28 states have internal predecessors, (149), 21 states have call successors, (25), 1 states have call predecessors, (25), 11 states have return successors, (32), 13 states have call predecessors, (32), 21 states have call successors, (32) [2024-11-28 03:12:41,913 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 178 transitions. [2024-11-28 03:12:41,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2024-11-28 03:12:41,918 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:12:41,918 INFO L218 NwaCegarLoop]: trace histogram [41, 40, 33, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 19, 13, 8, 1, 1, 1, 1] [2024-11-28 03:12:41,929 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-28 03:12:42,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:12:42,122 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:12:42,123 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:42,123 INFO L85 PathProgramCache]: Analyzing trace with hash -247046770, now seen corresponding path program 11 times [2024-11-28 03:12:42,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:12:42,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588906524] [2024-11-28 03:12:42,123 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:12:42,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:12:42,191 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 29 check-sat command(s) [2024-11-28 03:12:42,191 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:12:46,335 INFO L134 CoverageAnalysis]: Checked inductivity of 5628 backedges. 936 proven. 1467 refuted. 0 times theorem prover too weak. 3225 trivial. 0 not checked. [2024-11-28 03:12:46,336 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:12:46,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588906524] [2024-11-28 03:12:46,336 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588906524] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:12:46,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272755670] [2024-11-28 03:12:46,336 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:12:46,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:12:46,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:12:46,339 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:12:46,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 03:12:46,677 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 29 check-sat command(s) [2024-11-28 03:12:46,677 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:12:46,683 INFO L256 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 81 conjuncts are in the unsatisfiable core [2024-11-28 03:12:46,690 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:12:47,287 INFO L134 CoverageAnalysis]: Checked inductivity of 5628 backedges. 820 proven. 1112 refuted. 0 times theorem prover too weak. 3696 trivial. 0 not checked. [2024-11-28 03:12:47,287 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:12:57,302 INFO L134 CoverageAnalysis]: Checked inductivity of 5628 backedges. 1149 proven. 1015 refuted. 0 times theorem prover too weak. 3464 trivial. 0 not checked. [2024-11-28 03:12:57,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272755670] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:12:57,303 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:12:57,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 18, 29] total 47 [2024-11-28 03:12:57,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029629671] [2024-11-28 03:12:57,304 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:12:57,305 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-28 03:12:57,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:12:57,307 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-28 03:12:57,308 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=526, Invalid=1730, Unknown=0, NotChecked=0, Total=2256 [2024-11-28 03:12:57,308 INFO L87 Difference]: Start difference. First operand 145 states and 178 transitions. Second operand has 48 states, 47 states have (on average 2.6382978723404253) internal successors, (124), 48 states have internal predecessors, (124), 12 states have call successors, (13), 1 states have call predecessors, (13), 13 states have return successors, (34), 33 states have call predecessors, (34), 12 states have call successors, (34) [2024-11-28 03:12:57,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:12:57,664 INFO L93 Difference]: Finished difference Result 176 states and 232 transitions. [2024-11-28 03:12:57,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-28 03:12:57,665 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 2.6382978723404253) internal successors, (124), 48 states have internal predecessors, (124), 12 states have call successors, (13), 1 states have call predecessors, (13), 13 states have return successors, (34), 33 states have call predecessors, (34), 12 states have call successors, (34) Word has length 398 [2024-11-28 03:12:57,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:12:57,670 INFO L225 Difference]: With dead ends: 176 [2024-11-28 03:12:57,674 INFO L226 Difference]: Without dead ends: 175 [2024-11-28 03:12:57,675 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 879 GetRequests, 774 SyntacticMatches, 55 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2632 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=613, Invalid=2039, Unknown=0, NotChecked=0, Total=2652 [2024-11-28 03:12:57,676 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 8 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:12:57,676 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 270 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:12:57,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-11-28 03:12:57,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 166. [2024-11-28 03:12:57,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 134 states have (on average 1.0298507462686568) internal successors, (138), 131 states have internal predecessors, (138), 21 states have call successors, (21), 16 states have call predecessors, (21), 10 states have return successors, (58), 18 states have call predecessors, (58), 20 states have call successors, (58) [2024-11-28 03:12:57,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 217 transitions. [2024-11-28 03:12:57,699 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 217 transitions. Word has length 398 [2024-11-28 03:12:57,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:12:57,700 INFO L471 AbstractCegarLoop]: Abstraction has 166 states and 217 transitions. [2024-11-28 03:12:57,700 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 2.6382978723404253) internal successors, (124), 48 states have internal predecessors, (124), 12 states have call successors, (13), 1 states have call predecessors, (13), 13 states have return successors, (34), 33 states have call predecessors, (34), 12 states have call successors, (34) [2024-11-28 03:12:57,700 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 217 transitions. [2024-11-28 03:12:57,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 811 [2024-11-28 03:12:57,708 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:12:57,708 INFO L218 NwaCegarLoop]: trace histogram [83, 82, 67, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 41, 40, 26, 16, 1, 1, 1, 1] [2024-11-28 03:12:57,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-28 03:12:57,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:12:57,912 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:12:57,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:12:57,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1460460577, now seen corresponding path program 12 times [2024-11-28 03:12:57,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:12:57,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832273998] [2024-11-28 03:12:57,913 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:12:57,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:12:58,168 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 58 check-sat command(s) [2024-11-28 03:12:58,168 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:13:11,944 INFO L134 CoverageAnalysis]: Checked inductivity of 23859 backedges. 4168 proven. 5850 refuted. 0 times theorem prover too weak. 13841 trivial. 0 not checked. [2024-11-28 03:13:11,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:13:11,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832273998] [2024-11-28 03:13:11,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832273998] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:13:11,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918278582] [2024-11-28 03:13:11,944 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:13:11,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:13:11,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:13:11,946 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:13:11,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 03:13:12,571 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 58 check-sat command(s) [2024-11-28 03:13:12,571 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:13:12,578 INFO L256 TraceCheckSpWp]: Trace formula consists of 1457 conjuncts, 165 conjuncts are in the unsatisfiable core [2024-11-28 03:13:12,591 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:13:13,706 INFO L134 CoverageAnalysis]: Checked inductivity of 23859 backedges. 3732 proven. 4596 refuted. 0 times theorem prover too weak. 15531 trivial. 0 not checked. [2024-11-28 03:13:13,706 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:13:50,878 INFO L134 CoverageAnalysis]: Checked inductivity of 23859 backedges. 4599 proven. 4261 refuted. 0 times theorem prover too weak. 14999 trivial. 0 not checked. [2024-11-28 03:13:50,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1918278582] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:13:50,878 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:13:50,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 21, 38] total 53 [2024-11-28 03:13:50,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515979955] [2024-11-28 03:13:50,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:13:50,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-11-28 03:13:50,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:13:50,881 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-11-28 03:13:50,883 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=643, Invalid=2219, Unknown=0, NotChecked=0, Total=2862 [2024-11-28 03:13:50,883 INFO L87 Difference]: Start difference. First operand 166 states and 217 transitions. Second operand has 54 states, 53 states have (on average 2.6037735849056602) internal successors, (138), 54 states have internal predecessors, (138), 14 states have call successors, (15), 1 states have call predecessors, (15), 15 states have return successors, (37), 37 states have call predecessors, (37), 14 states have call successors, (37) [2024-11-28 03:13:51,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:13:51,398 INFO L93 Difference]: Finished difference Result 224 states and 328 transitions. [2024-11-28 03:13:51,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-28 03:13:51,399 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 2.6037735849056602) internal successors, (138), 54 states have internal predecessors, (138), 14 states have call successors, (15), 1 states have call predecessors, (15), 15 states have return successors, (37), 37 states have call predecessors, (37), 14 states have call successors, (37) Word has length 810 [2024-11-28 03:13:51,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:13:51,405 INFO L225 Difference]: With dead ends: 224 [2024-11-28 03:13:51,406 INFO L226 Difference]: Without dead ends: 223 [2024-11-28 03:13:51,407 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1791 GetRequests, 1588 SyntacticMatches, 143 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5211 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=827, Invalid=2955, Unknown=0, NotChecked=0, Total=3782 [2024-11-28 03:13:51,408 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 32 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:13:51,409 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 238 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:13:51,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2024-11-28 03:13:51,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 184. [2024-11-28 03:13:51,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 148 states have (on average 1.027027027027027) internal successors, (152), 145 states have internal predecessors, (152), 23 states have call successors, (23), 16 states have call predecessors, (23), 12 states have return successors, (86), 22 states have call predecessors, (86), 22 states have call successors, (86) [2024-11-28 03:13:51,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 261 transitions. [2024-11-28 03:13:51,442 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 261 transitions. Word has length 810 [2024-11-28 03:13:51,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:13:51,446 INFO L471 AbstractCegarLoop]: Abstraction has 184 states and 261 transitions. [2024-11-28 03:13:51,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 2.6037735849056602) internal successors, (138), 54 states have internal predecessors, (138), 14 states have call successors, (15), 1 states have call predecessors, (15), 15 states have return successors, (37), 37 states have call predecessors, (37), 14 states have call successors, (37) [2024-11-28 03:13:51,446 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 261 transitions. [2024-11-28 03:13:51,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2060 [2024-11-28 03:13:51,483 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:13:51,484 INFO L218 NwaCegarLoop]: trace histogram [212, 207, 172, 107, 107, 107, 107, 104, 104, 104, 104, 104, 103, 103, 103, 102, 65, 40, 1, 1, 1, 1] [2024-11-28 03:13:51,499 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-28 03:13:51,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-28 03:13:51,685 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:13:51,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:13:51,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1482021986, now seen corresponding path program 13 times [2024-11-28 03:13:51,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:13:51,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356183184] [2024-11-28 03:13:51,686 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:13:51,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:13:52,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:13:58,780 INFO L134 CoverageAnalysis]: Checked inductivity of 156276 backedges. 2567 proven. 15137 refuted. 0 times theorem prover too weak. 138572 trivial. 0 not checked. [2024-11-28 03:13:58,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:13:58,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356183184] [2024-11-28 03:13:58,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356183184] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:13:58,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1388601175] [2024-11-28 03:13:58,781 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:13:58,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:13:58,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:13:58,783 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:13:58,785 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 03:13:59,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:13:59,962 INFO L256 TraceCheckSpWp]: Trace formula consists of 3821 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-28 03:13:59,985 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:14:00,314 INFO L134 CoverageAnalysis]: Checked inductivity of 156276 backedges. 77839 proven. 5467 refuted. 0 times theorem prover too weak. 72970 trivial. 0 not checked. [2024-11-28 03:14:00,314 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:14:06,452 INFO L134 CoverageAnalysis]: Checked inductivity of 156276 backedges. 2626 proven. 18545 refuted. 0 times theorem prover too weak. 135105 trivial. 0 not checked. [2024-11-28 03:14:06,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1388601175] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:14:06,452 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:14:06,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 27] total 32 [2024-11-28 03:14:06,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224963728] [2024-11-28 03:14:06,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:14:06,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-28 03:14:06,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:14:06,456 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-28 03:14:06,456 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=838, Unknown=0, NotChecked=0, Total=992 [2024-11-28 03:14:06,457 INFO L87 Difference]: Start difference. First operand 184 states and 261 transitions. Second operand has 32 states, 32 states have (on average 5.90625) internal successors, (189), 32 states have internal predecessors, (189), 27 states have call successors, (34), 6 states have call predecessors, (34), 12 states have return successors, (37), 14 states have call predecessors, (37), 23 states have call successors, (37) [2024-11-28 03:14:07,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:14:07,329 INFO L93 Difference]: Finished difference Result 436 states and 713 transitions. [2024-11-28 03:14:07,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-28 03:14:07,330 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.90625) internal successors, (189), 32 states have internal predecessors, (189), 27 states have call successors, (34), 6 states have call predecessors, (34), 12 states have return successors, (37), 14 states have call predecessors, (37), 23 states have call successors, (37) Word has length 2059 [2024-11-28 03:14:07,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:14:07,338 INFO L225 Difference]: With dead ends: 436 [2024-11-28 03:14:07,340 INFO L226 Difference]: Without dead ends: 257 [2024-11-28 03:14:07,345 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4176 GetRequests, 4099 SyntacticMatches, 19 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 889 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=963, Invalid=2577, Unknown=0, NotChecked=0, Total=3540 [2024-11-28 03:14:07,347 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 281 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 153 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 03:14:07,348 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 153 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 03:14:07,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2024-11-28 03:14:07,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 220. [2024-11-28 03:14:07,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 177 states have (on average 1.0282485875706215) internal successors, (182), 173 states have internal predecessors, (182), 27 states have call successors, (27), 17 states have call predecessors, (27), 15 states have return successors, (108), 29 states have call predecessors, (108), 26 states have call successors, (108) [2024-11-28 03:14:07,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 317 transitions. [2024-11-28 03:14:07,390 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 317 transitions. Word has length 2059 [2024-11-28 03:14:07,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:14:07,391 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 317 transitions. [2024-11-28 03:14:07,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.90625) internal successors, (189), 32 states have internal predecessors, (189), 27 states have call successors, (34), 6 states have call predecessors, (34), 12 states have return successors, (37), 14 states have call predecessors, (37), 23 states have call successors, (37) [2024-11-28 03:14:07,393 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 317 transitions. [2024-11-28 03:14:07,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1909 [2024-11-28 03:14:07,427 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:14:07,428 INFO L218 NwaCegarLoop]: trace histogram [197, 191, 160, 100, 100, 100, 100, 96, 96, 96, 96, 96, 95, 95, 95, 94, 60, 37, 1, 1, 1, 1] [2024-11-28 03:14:07,447 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-28 03:14:07,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-28 03:14:07,629 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:14:07,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:14:07,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1424108109, now seen corresponding path program 14 times [2024-11-28 03:14:07,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:14:07,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019577354] [2024-11-28 03:14:07,630 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:14:07,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:14:07,924 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:14:07,924 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:14:14,861 INFO L134 CoverageAnalysis]: Checked inductivity of 134107 backedges. 4613 proven. 14816 refuted. 0 times theorem prover too weak. 114678 trivial. 0 not checked. [2024-11-28 03:14:14,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:14:14,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019577354] [2024-11-28 03:14:14,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019577354] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:14:14,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [57418294] [2024-11-28 03:14:14,862 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:14:14,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:14:14,862 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:14:14,864 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:14:14,866 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 03:14:16,058 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:14:16,058 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:14:16,074 INFO L256 TraceCheckSpWp]: Trace formula consists of 3541 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-28 03:14:16,099 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:14:16,506 INFO L134 CoverageAnalysis]: Checked inductivity of 134107 backedges. 35432 proven. 13819 refuted. 0 times theorem prover too weak. 84856 trivial. 0 not checked. [2024-11-28 03:14:16,507 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:14:23,251 INFO L134 CoverageAnalysis]: Checked inductivity of 134107 backedges. 5664 proven. 16936 refuted. 0 times theorem prover too weak. 111507 trivial. 0 not checked. [2024-11-28 03:14:23,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [57418294] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:14:23,252 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:14:23,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 31] total 36 [2024-11-28 03:14:23,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358189455] [2024-11-28 03:14:23,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:14:23,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-28 03:14:23,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:14:23,259 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-28 03:14:23,259 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=1071, Unknown=0, NotChecked=0, Total=1260 [2024-11-28 03:14:23,259 INFO L87 Difference]: Start difference. First operand 220 states and 317 transitions. Second operand has 36 states, 36 states have (on average 5.916666666666667) internal successors, (213), 36 states have internal predecessors, (213), 31 states have call successors, (38), 6 states have call predecessors, (38), 14 states have return successors, (43), 16 states have call predecessors, (43), 27 states have call successors, (43) [2024-11-28 03:14:24,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:14:24,467 INFO L93 Difference]: Finished difference Result 503 states and 804 transitions. [2024-11-28 03:14:24,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-28 03:14:24,471 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.916666666666667) internal successors, (213), 36 states have internal predecessors, (213), 31 states have call successors, (38), 6 states have call predecessors, (38), 14 states have return successors, (43), 16 states have call predecessors, (43), 27 states have call successors, (43) Word has length 1908 [2024-11-28 03:14:24,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:14:24,477 INFO L225 Difference]: With dead ends: 503 [2024-11-28 03:14:24,477 INFO L226 Difference]: Without dead ends: 288 [2024-11-28 03:14:24,482 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3887 GetRequests, 3796 SyntacticMatches, 21 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1339 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1309, Invalid=3803, Unknown=0, NotChecked=0, Total=5112 [2024-11-28 03:14:24,482 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 655 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:14:24,483 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [655 Valid, 165 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:14:24,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2024-11-28 03:14:24,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 259. [2024-11-28 03:14:24,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 210 states have (on average 1.0333333333333334) internal successors, (217), 204 states have internal predecessors, (217), 32 states have call successors, (32), 22 states have call predecessors, (32), 16 states have return successors, (114), 32 states have call predecessors, (114), 31 states have call successors, (114) [2024-11-28 03:14:24,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 363 transitions. [2024-11-28 03:14:24,531 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 363 transitions. Word has length 1908 [2024-11-28 03:14:24,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:14:24,533 INFO L471 AbstractCegarLoop]: Abstraction has 259 states and 363 transitions. [2024-11-28 03:14:24,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 5.916666666666667) internal successors, (213), 36 states have internal predecessors, (213), 31 states have call successors, (38), 6 states have call predecessors, (38), 14 states have return successors, (43), 16 states have call predecessors, (43), 27 states have call successors, (43) [2024-11-28 03:14:24,533 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 363 transitions. [2024-11-28 03:14:24,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1125 [2024-11-28 03:14:24,546 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:14:24,546 INFO L218 NwaCegarLoop]: trace histogram [115, 114, 93, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 57, 56, 36, 22, 1, 1, 1, 1] [2024-11-28 03:14:24,564 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-28 03:14:24,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-11-28 03:14:24,748 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:14:24,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:14:24,749 INFO L85 PathProgramCache]: Analyzing trace with hash 582945207, now seen corresponding path program 15 times [2024-11-28 03:14:24,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:14:24,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491903197] [2024-11-28 03:14:24,749 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:14:24,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:14:24,857 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 35 check-sat command(s) [2024-11-28 03:14:24,858 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:14:25,651 INFO L134 CoverageAnalysis]: Checked inductivity of 46230 backedges. 5737 proven. 1116 refuted. 0 times theorem prover too weak. 39377 trivial. 0 not checked. [2024-11-28 03:14:25,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:14:25,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491903197] [2024-11-28 03:14:25,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491903197] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:14:25,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567622079] [2024-11-28 03:14:25,652 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:14:25,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:14:25,652 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:14:25,656 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:14:25,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 03:14:26,511 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 35 check-sat command(s) [2024-11-28 03:14:26,511 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:14:26,517 INFO L256 TraceCheckSpWp]: Trace formula consists of 843 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 03:14:26,532 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:14:26,749 INFO L134 CoverageAnalysis]: Checked inductivity of 46230 backedges. 5731 proven. 1110 refuted. 0 times theorem prover too weak. 39389 trivial. 0 not checked. [2024-11-28 03:14:26,749 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:14:30,043 INFO L134 CoverageAnalysis]: Checked inductivity of 46230 backedges. 5731 proven. 1173 refuted. 0 times theorem prover too weak. 39326 trivial. 0 not checked. [2024-11-28 03:14:30,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [567622079] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:14:30,044 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:14:30,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 19] total 26 [2024-11-28 03:14:30,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921517874] [2024-11-28 03:14:30,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:14:30,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-28 03:14:30,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:14:30,046 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-28 03:14:30,047 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2024-11-28 03:14:30,047 INFO L87 Difference]: Start difference. First operand 259 states and 363 transitions. Second operand has 26 states, 26 states have (on average 5.153846153846154) internal successors, (134), 26 states have internal predecessors, (134), 12 states have call successors, (21), 1 states have call predecessors, (21), 11 states have return successors, (27), 18 states have call predecessors, (27), 12 states have call successors, (27) [2024-11-28 03:14:30,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:14:30,652 INFO L93 Difference]: Finished difference Result 504 states and 713 transitions. [2024-11-28 03:14:30,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-28 03:14:30,653 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.153846153846154) internal successors, (134), 26 states have internal predecessors, (134), 12 states have call successors, (21), 1 states have call predecessors, (21), 11 states have return successors, (27), 18 states have call predecessors, (27), 12 states have call successors, (27) Word has length 1124 [2024-11-28 03:14:30,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:14:30,657 INFO L225 Difference]: With dead ends: 504 [2024-11-28 03:14:30,657 INFO L226 Difference]: Without dead ends: 230 [2024-11-28 03:14:30,661 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2281 GetRequests, 2235 SyntacticMatches, 7 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=421, Invalid=1219, Unknown=0, NotChecked=0, Total=1640 [2024-11-28 03:14:30,662 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 116 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 03:14:30,662 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 218 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 03:14:30,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2024-11-28 03:14:30,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 199. [2024-11-28 03:14:30,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 162 states have (on average 1.0308641975308641) internal successors, (167), 158 states have internal predecessors, (167), 26 states have call successors, (26), 22 states have call predecessors, (26), 10 states have return successors, (47), 18 states have call predecessors, (47), 25 states have call successors, (47) [2024-11-28 03:14:30,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 240 transitions. [2024-11-28 03:14:30,685 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 240 transitions. Word has length 1124 [2024-11-28 03:14:30,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:14:30,686 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 240 transitions. [2024-11-28 03:14:30,686 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.153846153846154) internal successors, (134), 26 states have internal predecessors, (134), 12 states have call successors, (21), 1 states have call predecessors, (21), 11 states have return successors, (27), 18 states have call predecessors, (27), 12 states have call successors, (27) [2024-11-28 03:14:30,686 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 240 transitions. [2024-11-28 03:14:30,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2151 [2024-11-28 03:14:30,726 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:14:30,727 INFO L218 NwaCegarLoop]: trace histogram [220, 218, 178, 110, 110, 110, 110, 109, 109, 109, 109, 109, 109, 109, 109, 108, 68, 42, 1, 1, 1, 1] [2024-11-28 03:14:30,741 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-28 03:14:30,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-28 03:14:30,931 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:14:30,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:14:30,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1168233892, now seen corresponding path program 16 times [2024-11-28 03:14:30,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:14:30,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724287453] [2024-11-28 03:14:30,933 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:14:30,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:14:31,161 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:14:31,161 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:14:35,298 INFO L134 CoverageAnalysis]: Checked inductivity of 170426 backedges. 8719 proven. 19696 refuted. 0 times theorem prover too weak. 142011 trivial. 0 not checked. [2024-11-28 03:14:35,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:14:35,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724287453] [2024-11-28 03:14:35,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724287453] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:14:35,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784874627] [2024-11-28 03:14:35,299 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 03:14:35,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:14:35,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:14:35,302 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:14:35,303 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-28 03:14:36,318 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 03:14:36,318 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:14:36,327 INFO L256 TraceCheckSpWp]: Trace formula consists of 2662 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-28 03:14:36,343 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:14:36,841 INFO L134 CoverageAnalysis]: Checked inductivity of 170426 backedges. 9945 proven. 20851 refuted. 0 times theorem prover too weak. 139630 trivial. 0 not checked. [2024-11-28 03:14:36,842 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:14:48,879 INFO L134 CoverageAnalysis]: Checked inductivity of 170426 backedges. 9945 proven. 21155 refuted. 0 times theorem prover too weak. 139326 trivial. 0 not checked. [2024-11-28 03:14:48,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784874627] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:14:48,879 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:14:48,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23, 39] total 44 [2024-11-28 03:14:48,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431093063] [2024-11-28 03:14:48,880 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:14:48,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-28 03:14:48,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:14:48,882 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-28 03:14:48,883 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=298, Invalid=1594, Unknown=0, NotChecked=0, Total=1892 [2024-11-28 03:14:48,883 INFO L87 Difference]: Start difference. First operand 199 states and 240 transitions. Second operand has 44 states, 44 states have (on average 5.568181818181818) internal successors, (245), 44 states have internal predecessors, (245), 37 states have call successors, (41), 1 states have call predecessors, (41), 19 states have return successors, (56), 21 states have call predecessors, (56), 37 states have call successors, (56) [2024-11-28 03:14:50,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:14:50,383 INFO L93 Difference]: Finished difference Result 466 states and 644 transitions. [2024-11-28 03:14:50,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2024-11-28 03:14:50,384 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 5.568181818181818) internal successors, (245), 44 states have internal predecessors, (245), 37 states have call successors, (41), 1 states have call predecessors, (41), 19 states have return successors, (56), 21 states have call predecessors, (56), 37 states have call successors, (56) Word has length 2150 [2024-11-28 03:14:50,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:14:50,389 INFO L225 Difference]: With dead ends: 466 [2024-11-28 03:14:50,390 INFO L226 Difference]: Without dead ends: 272 [2024-11-28 03:14:50,394 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4379 GetRequests, 4277 SyntacticMatches, 19 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1908 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1676, Invalid=5464, Unknown=0, NotChecked=0, Total=7140 [2024-11-28 03:14:50,395 INFO L435 NwaCegarLoop]: 62 mSDtfsCounter, 587 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 935 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 1196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-28 03:14:50,395 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [587 Valid, 357 Invalid, 1196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 935 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-28 03:14:50,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2024-11-28 03:14:50,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 217. [2024-11-28 03:14:50,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 176 states have (on average 1.0284090909090908) internal successors, (181), 173 states have internal predecessors, (181), 29 states have call successors, (29), 23 states have call predecessors, (29), 11 states have return successors, (77), 20 states have call predecessors, (77), 28 states have call successors, (77) [2024-11-28 03:14:50,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 287 transitions. [2024-11-28 03:14:50,425 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 287 transitions. Word has length 2150 [2024-11-28 03:14:50,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:14:50,427 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 287 transitions. [2024-11-28 03:14:50,427 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 5.568181818181818) internal successors, (245), 44 states have internal predecessors, (245), 37 states have call successors, (41), 1 states have call predecessors, (41), 19 states have return successors, (56), 21 states have call predecessors, (56), 37 states have call successors, (56) [2024-11-28 03:14:50,427 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 287 transitions. [2024-11-28 03:14:50,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1478 [2024-11-28 03:14:50,446 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:14:50,446 INFO L218 NwaCegarLoop]: trace histogram [151, 150, 122, 75, 75, 75, 75, 75, 75, 75, 75, 75, 75, 75, 75, 74, 47, 29, 1, 1, 1, 1] [2024-11-28 03:14:50,464 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-28 03:14:50,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-28 03:14:50,647 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:14:50,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:14:50,648 INFO L85 PathProgramCache]: Analyzing trace with hash -1022123355, now seen corresponding path program 17 times [2024-11-28 03:14:50,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:14:50,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209787248] [2024-11-28 03:14:50,648 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:14:50,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:14:51,167 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 104 check-sat command(s) [2024-11-28 03:14:51,167 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:14:56,308 INFO L134 CoverageAnalysis]: Checked inductivity of 80131 backedges. 10615 proven. 6010 refuted. 0 times theorem prover too weak. 63506 trivial. 0 not checked. [2024-11-28 03:14:56,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:14:56,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209787248] [2024-11-28 03:14:56,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209787248] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:14:56,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977110260] [2024-11-28 03:14:56,309 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 03:14:56,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:14:56,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:14:56,311 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:14:56,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-28 03:14:57,896 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 104 check-sat command(s) [2024-11-28 03:14:57,896 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:14:57,906 INFO L256 TraceCheckSpWp]: Trace formula consists of 2610 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-28 03:14:57,917 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:14:58,339 INFO L134 CoverageAnalysis]: Checked inductivity of 80131 backedges. 10921 proven. 6262 refuted. 0 times theorem prover too weak. 62948 trivial. 0 not checked. [2024-11-28 03:14:58,339 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:15:05,855 INFO L134 CoverageAnalysis]: Checked inductivity of 80131 backedges. 10921 proven. 6461 refuted. 0 times theorem prover too weak. 62749 trivial. 0 not checked. [2024-11-28 03:15:05,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977110260] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:15:05,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:15:05,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 20, 33] total 41 [2024-11-28 03:15:05,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026584965] [2024-11-28 03:15:05,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:15:05,858 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-28 03:15:05,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:15:05,859 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-28 03:15:05,859 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=1359, Unknown=0, NotChecked=0, Total=1640 [2024-11-28 03:15:05,859 INFO L87 Difference]: Start difference. First operand 217 states and 287 transitions. Second operand has 41 states, 41 states have (on average 5.414634146341464) internal successors, (222), 41 states have internal predecessors, (222), 31 states have call successors, (37), 1 states have call predecessors, (37), 18 states have return successors, (49), 21 states have call predecessors, (49), 31 states have call successors, (49) [2024-11-28 03:15:06,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:15:06,795 INFO L93 Difference]: Finished difference Result 474 states and 633 transitions. [2024-11-28 03:15:06,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-28 03:15:06,796 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 41 states have (on average 5.414634146341464) internal successors, (222), 41 states have internal predecessors, (222), 31 states have call successors, (37), 1 states have call predecessors, (37), 18 states have return successors, (49), 21 states have call predecessors, (49), 31 states have call successors, (49) Word has length 1477 [2024-11-28 03:15:06,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:15:06,801 INFO L225 Difference]: With dead ends: 474 [2024-11-28 03:15:06,801 INFO L226 Difference]: Without dead ends: 262 [2024-11-28 03:15:06,804 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3011 GetRequests, 2932 SyntacticMatches, 17 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1365 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=990, Invalid=3042, Unknown=0, NotChecked=0, Total=4032 [2024-11-28 03:15:06,805 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 416 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 416 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:15:06,805 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [416 Valid, 327 Invalid, 929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 748 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 03:15:06,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2024-11-28 03:15:06,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 214. [2024-11-28 03:15:06,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 173 states have (on average 1.023121387283237) internal successors, (177), 171 states have internal predecessors, (177), 29 states have call successors, (29), 23 states have call predecessors, (29), 11 states have return successors, (64), 19 states have call predecessors, (64), 28 states have call successors, (64) [2024-11-28 03:15:06,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 270 transitions. [2024-11-28 03:15:06,830 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 270 transitions. Word has length 1477 [2024-11-28 03:15:06,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:15:06,831 INFO L471 AbstractCegarLoop]: Abstraction has 214 states and 270 transitions. [2024-11-28 03:15:06,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 41 states have (on average 5.414634146341464) internal successors, (222), 41 states have internal predecessors, (222), 31 states have call successors, (37), 1 states have call predecessors, (37), 18 states have return successors, (49), 21 states have call predecessors, (49), 31 states have call successors, (49) [2024-11-28 03:15:06,832 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 270 transitions. [2024-11-28 03:15:06,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1733 [2024-11-28 03:15:06,856 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:15:06,857 INFO L218 NwaCegarLoop]: trace histogram [177, 176, 143, 88, 88, 88, 88, 88, 88, 88, 88, 88, 88, 88, 88, 87, 55, 34, 1, 1, 1, 1] [2024-11-28 03:15:06,873 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-28 03:15:07,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-28 03:15:07,058 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:15:07,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:15:07,058 INFO L85 PathProgramCache]: Analyzing trace with hash -27170372, now seen corresponding path program 18 times [2024-11-28 03:15:07,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:15:07,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657123123] [2024-11-28 03:15:07,059 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:15:07,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:15:07,707 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 124 check-sat command(s) [2024-11-28 03:15:07,707 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:16:56,546 INFO L134 CoverageAnalysis]: Checked inductivity of 110385 backedges. 20162 proven. 26278 refuted. 0 times theorem prover too weak. 63945 trivial. 0 not checked. [2024-11-28 03:16:56,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:16:56,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657123123] [2024-11-28 03:16:56,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657123123] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:16:56,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [556475069] [2024-11-28 03:16:56,546 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 03:16:56,547 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:16:56,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:16:56,552 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:16:56,554 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-28 03:16:58,554 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 124 check-sat command(s) [2024-11-28 03:16:58,555 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:16:58,581 INFO L256 TraceCheckSpWp]: Trace formula consists of 3220 conjuncts, 353 conjuncts are in the unsatisfiable core [2024-11-28 03:16:58,596 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:17:00,702 INFO L134 CoverageAnalysis]: Checked inductivity of 110385 backedges. 18335 proven. 20554 refuted. 0 times theorem prover too weak. 71496 trivial. 0 not checked. [2024-11-28 03:17:00,702 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:19:46,262 INFO L134 CoverageAnalysis]: Checked inductivity of 110385 backedges. 20425 proven. 19669 refuted. 0 times theorem prover too weak. 70291 trivial. 0 not checked. [2024-11-28 03:19:46,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [556475069] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:19:46,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:19:46,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 27, 47] total 67 [2024-11-28 03:19:46,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650714368] [2024-11-28 03:19:46,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:19:46,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-11-28 03:19:46,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:19:46,265 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-11-28 03:19:46,266 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=999, Invalid=3557, Unknown=0, NotChecked=0, Total=4556 [2024-11-28 03:19:46,267 INFO L87 Difference]: Start difference. First operand 214 states and 270 transitions. Second operand has 68 states, 67 states have (on average 2.5671641791044775) internal successors, (172), 68 states have internal predecessors, (172), 18 states have call successors, (19), 1 states have call predecessors, (19), 19 states have return successors, (47), 47 states have call predecessors, (47), 18 states have call successors, (47) [2024-11-28 03:19:46,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:19:46,592 INFO L93 Difference]: Finished difference Result 245 states and 328 transitions. [2024-11-28 03:19:46,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-11-28 03:19:46,593 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 67 states have (on average 2.5671641791044775) internal successors, (172), 68 states have internal predecessors, (172), 18 states have call successors, (19), 1 states have call predecessors, (19), 19 states have return successors, (47), 47 states have call predecessors, (47), 18 states have call successors, (47) Word has length 1732 [2024-11-28 03:19:46,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:19:46,598 INFO L225 Difference]: With dead ends: 245 [2024-11-28 03:19:46,598 INFO L226 Difference]: Without dead ends: 244 [2024-11-28 03:19:46,599 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3819 GetRequests, 3424 SyntacticMatches, 325 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15125 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=1113, Invalid=3999, Unknown=0, NotChecked=0, Total=5112 [2024-11-28 03:19:46,600 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 10 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:19:46,601 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 171 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:19:46,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2024-11-28 03:19:46,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 235. [2024-11-28 03:19:46,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 190 states have (on average 1.0210526315789474) internal successors, (194), 187 states have internal predecessors, (194), 31 states have call successors, (31), 23 states have call predecessors, (31), 13 states have return successors, (88), 24 states have call predecessors, (88), 30 states have call successors, (88) [2024-11-28 03:19:46,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 313 transitions. [2024-11-28 03:19:46,629 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 313 transitions. Word has length 1732 [2024-11-28 03:19:46,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:19:46,630 INFO L471 AbstractCegarLoop]: Abstraction has 235 states and 313 transitions. [2024-11-28 03:19:46,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 67 states have (on average 2.5671641791044775) internal successors, (172), 68 states have internal predecessors, (172), 18 states have call successors, (19), 1 states have call predecessors, (19), 19 states have return successors, (47), 47 states have call predecessors, (47), 18 states have call successors, (47) [2024-11-28 03:19:46,631 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 313 transitions. [2024-11-28 03:19:46,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5232 [2024-11-28 03:19:46,811 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:19:46,812 INFO L218 NwaCegarLoop]: trace histogram [535, 531, 433, 268, 268, 268, 268, 266, 266, 266, 266, 266, 265, 265, 265, 264, 165, 102, 1, 1, 1, 1] [2024-11-28 03:19:46,824 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-28 03:19:47,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-28 03:19:47,012 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:19:47,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:19:47,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1637233277, now seen corresponding path program 19 times [2024-11-28 03:19:47,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:19:47,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144497270] [2024-11-28 03:19:47,015 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:19:47,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:19:48,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:20:36,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1013902 backedges. 15767 proven. 61851 refuted. 0 times theorem prover too weak. 936284 trivial. 0 not checked. [2024-11-28 03:20:36,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:20:36,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144497270] [2024-11-28 03:20:36,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144497270] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:20:36,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934136914] [2024-11-28 03:20:36,555 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 03:20:36,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:20:36,555 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:20:36,557 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:20:36,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-28 03:20:39,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:20:39,504 INFO L256 TraceCheckSpWp]: Trace formula consists of 9681 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-28 03:20:39,536 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:20:40,003 INFO L134 CoverageAnalysis]: Checked inductivity of 1013902 backedges. 468140 proven. 38514 refuted. 0 times theorem prover too weak. 507248 trivial. 0 not checked. [2024-11-28 03:20:40,003 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:20:56,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1013902 backedges. 18598 proven. 68142 refuted. 0 times theorem prover too weak. 927162 trivial. 0 not checked. [2024-11-28 03:20:56,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934136914] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:20:56,882 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:20:56,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 41] total 46 [2024-11-28 03:20:56,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662450737] [2024-11-28 03:20:56,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:20:56,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-28 03:20:56,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:20:56,891 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-28 03:20:56,892 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=304, Invalid=1766, Unknown=0, NotChecked=0, Total=2070 [2024-11-28 03:20:56,892 INFO L87 Difference]: Start difference. First operand 235 states and 313 transitions. Second operand has 46 states, 46 states have (on average 5.978260869565218) internal successors, (275), 46 states have internal predecessors, (275), 41 states have call successors, (48), 4 states have call predecessors, (48), 20 states have return successors, (61), 22 states have call predecessors, (61), 39 states have call successors, (61) [2024-11-28 03:20:58,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:20:58,495 INFO L93 Difference]: Finished difference Result 562 states and 824 transitions. [2024-11-28 03:20:58,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-11-28 03:20:58,496 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 5.978260869565218) internal successors, (275), 46 states have internal predecessors, (275), 41 states have call successors, (48), 4 states have call predecessors, (48), 20 states have return successors, (61), 22 states have call predecessors, (61), 39 states have call successors, (61) Word has length 5231 [2024-11-28 03:20:58,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:20:58,502 INFO L225 Difference]: With dead ends: 562 [2024-11-28 03:20:58,502 INFO L226 Difference]: Without dead ends: 332 [2024-11-28 03:20:58,505 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10566 GetRequests, 10437 SyntacticMatches, 23 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3211 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2619, Invalid=8937, Unknown=0, NotChecked=0, Total=11556 [2024-11-28 03:20:58,506 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 865 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 334 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 334 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 03:20:58,506 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [865 Valid, 267 Invalid, 974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [334 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 03:20:58,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2024-11-28 03:20:58,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 289. [2024-11-28 03:20:58,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 235 states have (on average 1.025531914893617) internal successors, (241), 231 states have internal predecessors, (241), 39 states have call successors, (39), 30 states have call predecessors, (39), 14 states have return successors, (105), 27 states have call predecessors, (105), 38 states have call successors, (105) [2024-11-28 03:20:58,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 385 transitions. [2024-11-28 03:20:58,540 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 385 transitions. Word has length 5231 [2024-11-28 03:20:58,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:20:58,542 INFO L471 AbstractCegarLoop]: Abstraction has 289 states and 385 transitions. [2024-11-28 03:20:58,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 5.978260869565218) internal successors, (275), 46 states have internal predecessors, (275), 41 states have call successors, (48), 4 states have call predecessors, (48), 20 states have return successors, (61), 22 states have call predecessors, (61), 39 states have call successors, (61) [2024-11-28 03:20:58,542 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 385 transitions. [2024-11-28 03:20:58,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3479 [2024-11-28 03:20:58,628 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:20:58,629 INFO L218 NwaCegarLoop]: trace histogram [355, 354, 287, 177, 177, 177, 177, 177, 177, 177, 177, 177, 177, 177, 177, 176, 110, 68, 1, 1, 1, 1] [2024-11-28 03:20:58,666 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-28 03:20:58,830 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-28 03:20:58,830 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:20:58,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:20:58,831 INFO L85 PathProgramCache]: Analyzing trace with hash -764474505, now seen corresponding path program 20 times [2024-11-28 03:20:58,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:20:58,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816143964] [2024-11-28 03:20:58,831 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:20:58,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:20:59,787 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:20:59,787 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:21:21,515 INFO L134 CoverageAnalysis]: Checked inductivity of 447433 backedges. 15535 proven. 36406 refuted. 0 times theorem prover too weak. 395492 trivial. 0 not checked. [2024-11-28 03:21:21,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:21:21,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816143964] [2024-11-28 03:21:21,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816143964] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 03:21:21,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371486461] [2024-11-28 03:21:21,515 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 03:21:21,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:21:21,516 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:21:21,517 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:21:21,518 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-28 03:21:24,218 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 03:21:24,218 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 03:21:24,247 INFO L256 TraceCheckSpWp]: Trace formula consists of 6445 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-28 03:21:24,279 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:21:24,634 INFO L134 CoverageAnalysis]: Checked inductivity of 447433 backedges. 205565 proven. 20731 refuted. 0 times theorem prover too weak. 221137 trivial. 0 not checked. [2024-11-28 03:21:24,634 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:21:41,010 INFO L134 CoverageAnalysis]: Checked inductivity of 447433 backedges. 15515 proven. 37961 refuted. 0 times theorem prover too weak. 393957 trivial. 0 not checked. [2024-11-28 03:21:41,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371486461] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 03:21:41,011 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 03:21:41,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 23, 39] total 44 [2024-11-28 03:21:41,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041687835] [2024-11-28 03:21:41,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 03:21:41,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-28 03:21:41,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:21:41,017 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-28 03:21:41,017 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=311, Invalid=1581, Unknown=0, NotChecked=0, Total=1892 [2024-11-28 03:21:41,017 INFO L87 Difference]: Start difference. First operand 289 states and 385 transitions. Second operand has 44 states, 44 states have (on average 5.7727272727272725) internal successors, (254), 44 states have internal predecessors, (254), 38 states have call successors, (43), 2 states have call predecessors, (43), 20 states have return successors, (58), 20 states have call predecessors, (58), 38 states have call successors, (58) [2024-11-28 03:21:42,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:21:42,086 INFO L93 Difference]: Finished difference Result 597 states and 827 transitions. [2024-11-28 03:21:42,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-28 03:21:42,087 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 5.7727272727272725) internal successors, (254), 44 states have internal predecessors, (254), 38 states have call successors, (43), 2 states have call predecessors, (43), 20 states have return successors, (58), 20 states have call predecessors, (58), 38 states have call successors, (58) Word has length 3478 [2024-11-28 03:21:42,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:21:42,092 INFO L225 Difference]: With dead ends: 597 [2024-11-28 03:21:42,092 INFO L226 Difference]: Without dead ends: 313 [2024-11-28 03:21:42,096 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7021 GetRequests, 6933 SyntacticMatches, 19 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1469 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1214, Invalid=3756, Unknown=0, NotChecked=0, Total=4970 [2024-11-28 03:21:42,097 INFO L435 NwaCegarLoop]: 76 mSDtfsCounter, 442 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 1343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 03:21:42,097 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [442 Valid, 436 Invalid, 1343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 1129 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 03:21:42,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2024-11-28 03:21:42,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 211. [2024-11-28 03:21:42,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 170 states have (on average 1.0176470588235293) internal successors, (173), 168 states have internal predecessors, (173), 28 states have call successors, (28), 20 states have call predecessors, (28), 12 states have return successors, (81), 22 states have call predecessors, (81), 27 states have call successors, (81) [2024-11-28 03:21:42,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 282 transitions. [2024-11-28 03:21:42,129 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 282 transitions. Word has length 3478 [2024-11-28 03:21:42,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:21:42,131 INFO L471 AbstractCegarLoop]: Abstraction has 211 states and 282 transitions. [2024-11-28 03:21:42,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 5.7727272727272725) internal successors, (254), 44 states have internal predecessors, (254), 38 states have call successors, (43), 2 states have call predecessors, (43), 20 states have return successors, (58), 20 states have call predecessors, (58), 38 states have call successors, (58) [2024-11-28 03:21:42,132 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 282 transitions. [2024-11-28 03:21:42,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7384 [2024-11-28 03:21:42,407 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:21:42,408 INFO L218 NwaCegarLoop]: trace histogram [754, 751, 610, 377, 377, 377, 377, 376, 376, 376, 376, 376, 375, 375, 375, 374, 233, 144, 1, 1, 1, 1] [2024-11-28 03:21:42,432 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-28 03:21:42,609 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2472abbf-fa07-43df-bd2f-a80acc316c40/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-28 03:21:42,609 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-11-28 03:21:42,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:21:42,612 INFO L85 PathProgramCache]: Analyzing trace with hash 428657742, now seen corresponding path program 21 times [2024-11-28 03:21:42,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:21:42,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951874732] [2024-11-28 03:21:42,613 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 03:21:42,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:21:46,085 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 376 check-sat command(s) [2024-11-28 03:21:46,085 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat