./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-numeric/Fibonacci01-2-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- 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_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-numeric/Fibonacci01-2-overflow.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1 --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 64bit --witnessprinter.graph.data.programhash 694713b32fd9c1719d4a8995f33c66cfa1f4ebdac7358c65fcc55ce37970cfaf --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 15:12:54,455 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 15:12:54,507 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Overflow-64bit-Automizer_Default.epf [2024-12-02 15:12:54,512 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 15:12:54,512 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 15:12:54,533 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 15:12:54,534 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 15:12:54,534 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 15:12:54,535 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 15:12:54,535 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 15:12:54,535 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 15:12:54,535 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 15:12:54,535 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 15:12:54,535 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 15:12:54,535 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 15:12:54,536 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 15:12:54,536 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 15:12:54,536 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 15:12:54,536 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 15:12:54,536 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 15:12:54,536 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 15:12:54,536 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 15:12:54,536 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-12-02 15:12:54,536 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-12-02 15:12:54,536 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 15:12:54,537 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 15:12:54,537 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 15:12:54,537 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 15:12:54,537 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 15:12:54,537 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 15:12:54,537 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 15:12:54,537 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:12:54,537 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 15:12:54,537 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 15:12:54,537 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 15:12:54,538 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 15:12:54,538 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:12:54,538 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 15:12:54,538 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 15:12:54,538 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 15:12:54,538 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 15:12:54,538 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 15:12:54,538 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 15:12:54,538 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 15:12:54,538 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 15:12:54,539 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 15:12:54,539 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 15:12:54,539 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_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 694713b32fd9c1719d4a8995f33c66cfa1f4ebdac7358c65fcc55ce37970cfaf [2024-12-02 15:12:54,743 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 15:12:54,751 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 15:12:54,753 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 15:12:54,754 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 15:12:54,754 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 15:12:54,755 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/termination-numeric/Fibonacci01-2-overflow.c [2024-12-02 15:12:57,400 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/data/6411d5692/ffa02af0f661408d8779ff86260ecc42/FLAG0df0e53b7 [2024-12-02 15:12:57,581 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 15:12:57,582 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/sv-benchmarks/c/termination-numeric/Fibonacci01-2-overflow.c [2024-12-02 15:12:57,594 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/data/6411d5692/ffa02af0f661408d8779ff86260ecc42/FLAG0df0e53b7 [2024-12-02 15:12:57,607 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/data/6411d5692/ffa02af0f661408d8779ff86260ecc42 [2024-12-02 15:12:57,610 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 15:12:57,611 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 15:12:57,612 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 15:12:57,612 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 15:12:57,615 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 15:12:57,616 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:12:57" (1/1) ... [2024-12-02 15:12:57,616 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@592ac81a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:12:57, skipping insertion in model container [2024-12-02 15:12:57,617 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 03:12:57" (1/1) ... [2024-12-02 15:12:57,627 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 15:12:57,731 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 15:12:57,738 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 15:12:57,748 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 15:12:57,758 INFO L204 MainTranslator]: Completed translation [2024-12-02 15:12:57,759 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:12:57 WrapperNode [2024-12-02 15:12:57,759 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 15:12:57,760 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 15:12:57,760 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 15:12:57,760 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 15:12:57,765 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:12:57" (1/1) ... [2024-12-02 15:12:57,769 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:12:57" (1/1) ... [2024-12-02 15:12:57,780 INFO L138 Inliner]: procedures = 13, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 27 [2024-12-02 15:12:57,780 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 15:12:57,780 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 15:12:57,781 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 15:12:57,781 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 15:12:57,787 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:12:57" (1/1) ... [2024-12-02 15:12:57,787 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:12:57" (1/1) ... [2024-12-02 15:12:57,788 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:12:57" (1/1) ... [2024-12-02 15:12:57,797 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]. [2024-12-02 15:12:57,797 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:12:57" (1/1) ... [2024-12-02 15:12:57,797 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:12:57" (1/1) ... [2024-12-02 15:12:57,799 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:12:57" (1/1) ... [2024-12-02 15:12:57,800 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:12:57" (1/1) ... [2024-12-02 15:12:57,802 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:12:57" (1/1) ... [2024-12-02 15:12:57,802 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:12:57" (1/1) ... [2024-12-02 15:12:57,803 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:12:57" (1/1) ... [2024-12-02 15:12:57,804 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 15:12:57,805 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 15:12:57,805 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 15:12:57,805 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 15:12:57,806 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:12:57" (1/1) ... [2024-12-02 15:12:57,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 15:12:57,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:12:57,829 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 15:12:57,832 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 15:12:57,852 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2024-12-02 15:12:57,853 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2024-12-02 15:12:57,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 15:12:57,853 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 15:12:57,853 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 15:12:57,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 15:12:57,897 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 15:12:57,898 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 15:12:58,017 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2024-12-02 15:12:58,017 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 15:12:58,026 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 15:12:58,026 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-12-02 15:12:58,026 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:12:58 BoogieIcfgContainer [2024-12-02 15:12:58,026 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 15:12:58,028 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 15:12:58,028 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 15:12:58,032 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 15:12:58,032 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 03:12:57" (1/3) ... [2024-12-02 15:12:58,032 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a9b65b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:12:58, skipping insertion in model container [2024-12-02 15:12:58,033 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 03:12:57" (2/3) ... [2024-12-02 15:12:58,033 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a9b65b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 03:12:58, skipping insertion in model container [2024-12-02 15:12:58,033 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 03:12:58" (3/3) ... [2024-12-02 15:12:58,034 INFO L128 eAbstractionObserver]: Analyzing ICFG Fibonacci01-2-overflow.c [2024-12-02 15:12:58,046 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 15:12:58,047 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG Fibonacci01-2-overflow.c that has 2 procedures, 32 locations, 1 initial locations, 0 loop locations, and 6 error locations. [2024-12-02 15:12:58,089 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 15:12:58,099 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;@33c7c324, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 15:12:58,099 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-12-02 15:12:58,102 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 27 states have internal predecessors, (31), 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) [2024-12-02 15:12:58,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-12-02 15:12:58,106 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:12:58,107 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:12:58,107 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-12-02 15:12:58,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:12:58,111 INFO L85 PathProgramCache]: Analyzing trace with hash 629029755, now seen corresponding path program 1 times [2024-12-02 15:12:58,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:12:58,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749844167] [2024-12-02 15:12:58,117 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:12:58,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:12:58,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:12:58,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:12:58,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:12:58,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749844167] [2024-12-02 15:12:58,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749844167] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:12:58,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:12:58,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 15:12:58,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122210421] [2024-12-02 15:12:58,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:12:58,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 15:12:58,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:12:58,279 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 15:12:58,279 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 15:12:58,281 INFO L87 Difference]: Start difference. First operand has 32 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 27 states have internal predecessors, (31), 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 3.5) internal successors, (7), 3 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) [2024-12-02 15:12:58,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:12:58,322 INFO L93 Difference]: Finished difference Result 37 states and 43 transitions. [2024-12-02 15:12:58,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 15:12:58,324 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 [2024-12-02 15:12:58,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:12:58,329 INFO L225 Difference]: With dead ends: 37 [2024-12-02 15:12:58,329 INFO L226 Difference]: Without dead ends: 25 [2024-12-02 15:12:58,331 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 [2024-12-02 15:12:58,334 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 11 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:12:58,334 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 44 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:12:58,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-12-02 15:12:58,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2024-12-02 15:12:58,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.4) internal successors, (21), 19 states have internal predecessors, (21), 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) [2024-12-02 15:12:58,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2024-12-02 15:12:58,363 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 8 [2024-12-02 15:12:58,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:12:58,364 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2024-12-02 15:12:58,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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) [2024-12-02 15:12:58,364 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2024-12-02 15:12:58,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-12-02 15:12:58,365 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:12:58,365 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:12:58,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 15:12:58,365 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-12-02 15:12:58,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:12:58,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1974914033, now seen corresponding path program 1 times [2024-12-02 15:12:58,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:12:58,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901946945] [2024-12-02 15:12:58,366 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:12:58,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:12:58,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:12:58,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 15:12:58,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:12:58,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901946945] [2024-12-02 15:12:58,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901946945] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:12:58,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:12:58,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 15:12:58,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039549653] [2024-12-02 15:12:58,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:12:58,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 15:12:58,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:12:58,448 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 15:12:58,448 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:12:58,448 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2024-12-02 15:12:58,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:12:58,526 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2024-12-02 15:12:58,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 15:12:58,526 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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 9 [2024-12-02 15:12:58,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:12:58,527 INFO L225 Difference]: With dead ends: 25 [2024-12-02 15:12:58,527 INFO L226 Difference]: Without dead ends: 23 [2024-12-02 15:12:58,527 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 [2024-12-02 15:12:58,528 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 26 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:12:58,528 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 29 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:12:58,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-12-02 15:12:58,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2024-12-02 15:12:58,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 17 states have internal predecessors, (19), 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) [2024-12-02 15:12:58,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2024-12-02 15:12:58,534 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 9 [2024-12-02 15:12:58,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:12:58,534 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2024-12-02 15:12:58,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 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) [2024-12-02 15:12:58,534 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2024-12-02 15:12:58,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-12-02 15:12:58,535 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:12:58,535 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] [2024-12-02 15:12:58,535 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 15:12:58,535 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-12-02 15:12:58,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:12:58,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1558234811, now seen corresponding path program 1 times [2024-12-02 15:12:58,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:12:58,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870331594] [2024-12-02 15:12:58,536 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:12:58,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:12:58,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:12:58,677 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-12-02 15:12:58,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:12:58,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870331594] [2024-12-02 15:12:58,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870331594] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:12:58,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 15:12:58,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 15:12:58,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872141000] [2024-12-02 15:12:58,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:12:58,678 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 15:12:58,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:12:58,679 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 15:12:58,679 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 15:12:58,679 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-02 15:12:58,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:12:58,725 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2024-12-02 15:12:58,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 15:12:58,726 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2024-12-02 15:12:58,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:12:58,727 INFO L225 Difference]: With dead ends: 35 [2024-12-02 15:12:58,727 INFO L226 Difference]: Without dead ends: 33 [2024-12-02 15:12:58,727 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 [2024-12-02 15:12:58,728 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 3 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:12:58,728 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 69 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:12:58,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-12-02 15:12:58,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2024-12-02 15:12:58,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 24 states have internal predecessors, (26), 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) [2024-12-02 15:12:58,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2024-12-02 15:12:58,737 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 24 [2024-12-02 15:12:58,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:12:58,737 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2024-12-02 15:12:58,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-12-02 15:12:58,737 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2024-12-02 15:12:58,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-12-02 15:12:58,739 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:12:58,739 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] [2024-12-02 15:12:58,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 15:12:58,739 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-12-02 15:12:58,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:12:58,740 INFO L85 PathProgramCache]: Analyzing trace with hash 171916151, now seen corresponding path program 1 times [2024-12-02 15:12:58,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:12:58,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033909989] [2024-12-02 15:12:58,740 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:12:58,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:12:58,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:12:58,855 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 15:12:58,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:12:58,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033909989] [2024-12-02 15:12:58,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033909989] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:12:58,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955715906] [2024-12-02 15:12:58,855 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:12:58,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:12:58,856 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:12:58,858 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:12:58,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 15:12:58,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:12:58,903 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 15:12:58,907 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:12:59,006 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-02 15:12:59,006 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:12:59,157 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-12-02 15:12:59,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955715906] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:12:59,158 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:12:59,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 15 [2024-12-02 15:12:59,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671304784] [2024-12-02 15:12:59,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:12:59,159 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 15:12:59,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:12:59,160 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 15:12:59,160 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2024-12-02 15:12:59,160 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 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) [2024-12-02 15:12:59,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:12:59,422 INFO L93 Difference]: Finished difference Result 91 states and 129 transitions. [2024-12-02 15:12:59,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 15:12:59,423 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 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 31 [2024-12-02 15:12:59,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:12:59,424 INFO L225 Difference]: With dead ends: 91 [2024-12-02 15:12:59,424 INFO L226 Difference]: Without dead ends: 65 [2024-12-02 15:12:59,425 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2024-12-02 15:12:59,426 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 134 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:12:59,426 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 92 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 15:12:59,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-12-02 15:12:59,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 53. [2024-12-02 15:12:59,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 42 states have internal predecessors, (43), 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) [2024-12-02 15:12:59,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 68 transitions. [2024-12-02 15:12:59,439 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 68 transitions. Word has length 31 [2024-12-02 15:12:59,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:12:59,440 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 68 transitions. [2024-12-02 15:12:59,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.466666666666667) internal successors, (37), 15 states have internal predecessors, (37), 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) [2024-12-02 15:12:59,440 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 68 transitions. [2024-12-02 15:12:59,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-12-02 15:12:59,441 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:12:59,441 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] [2024-12-02 15:12:59,448 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 15:12:59,642 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:12:59,642 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-12-02 15:12:59,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:12:59,643 INFO L85 PathProgramCache]: Analyzing trace with hash 170784145, now seen corresponding path program 2 times [2024-12-02 15:12:59,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:12:59,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839338861] [2024-12-02 15:12:59,643 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:12:59,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:12:59,655 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:12:59,655 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:12:59,732 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 15:12:59,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:12:59,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839338861] [2024-12-02 15:12:59,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839338861] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:12:59,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682463956] [2024-12-02 15:12:59,733 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:12:59,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:12:59,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:12:59,734 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:12:59,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 15:12:59,775 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:12:59,775 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:12:59,776 INFO L256 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-12-02 15:12:59,777 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:12:59,819 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-12-02 15:12:59,819 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 15:12:59,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682463956] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:12:59,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 15:12:59,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-12-02 15:12:59,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523794914] [2024-12-02 15:12:59,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:12:59,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 15:12:59,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:12:59,820 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 15:12:59,820 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-12-02 15:12:59,821 INFO L87 Difference]: Start difference. First operand 53 states and 68 transitions. Second operand has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 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) [2024-12-02 15:12:59,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:12:59,848 INFO L93 Difference]: Finished difference Result 60 states and 76 transitions. [2024-12-02 15:12:59,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 15:12:59,849 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 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 [2024-12-02 15:12:59,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:12:59,850 INFO L225 Difference]: With dead ends: 60 [2024-12-02 15:12:59,850 INFO L226 Difference]: Without dead ends: 59 [2024-12-02 15:12:59,850 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-12-02 15:12:59,851 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 4 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:12:59,852 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 51 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:12:59,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-12-02 15:12:59,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55. [2024-12-02 15:12:59,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 41 states have (on average 1.0975609756097562) internal successors, (45), 43 states have internal predecessors, (45), 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) [2024-12-02 15:12:59,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2024-12-02 15:12:59,862 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 31 [2024-12-02 15:12:59,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:12:59,862 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2024-12-02 15:12:59,863 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.25) internal successors, (17), 5 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) [2024-12-02 15:12:59,863 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2024-12-02 15:12:59,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-12-02 15:12:59,863 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:12:59,864 INFO L218 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 15:12:59,869 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 15:13:00,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:13:00,064 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-12-02 15:13:00,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:13:00,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1165934437, now seen corresponding path program 1 times [2024-12-02 15:13:00,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:13:00,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98469974] [2024-12-02 15:13:00,065 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:13:00,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:13:00,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:13:00,130 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-12-02 15:13:00,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:13:00,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98469974] [2024-12-02 15:13:00,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98469974] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:13:00,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724964979] [2024-12-02 15:13:00,131 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:13:00,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:13:00,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:13:00,133 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:13:00,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 15:13:00,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:13:00,168 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 15:13:00,169 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:13:00,228 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-12-02 15:13:00,228 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 15:13:00,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724964979] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 15:13:00,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 15:13:00,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2024-12-02 15:13:00,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943415869] [2024-12-02 15:13:00,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 15:13:00,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 15:13:00,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:13:00,229 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 15:13:00,229 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-12-02 15:13:00,230 INFO L87 Difference]: Start difference. First operand 55 states and 70 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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) [2024-12-02 15:13:00,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:13:00,268 INFO L93 Difference]: Finished difference Result 82 states and 117 transitions. [2024-12-02 15:13:00,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 15:13:00,269 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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 26 [2024-12-02 15:13:00,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:13:00,270 INFO L225 Difference]: With dead ends: 82 [2024-12-02 15:13:00,270 INFO L226 Difference]: Without dead ends: 81 [2024-12-02 15:13:00,271 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-12-02 15:13:00,271 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 2 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:13:00,271 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 71 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:13:00,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-12-02 15:13:00,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 64. [2024-12-02 15:13:00,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 48 states have (on average 1.0833333333333333) internal successors, (52), 50 states have internal predecessors, (52), 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) [2024-12-02 15:13:00,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 87 transitions. [2024-12-02 15:13:00,286 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 87 transitions. Word has length 26 [2024-12-02 15:13:00,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:13:00,286 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 87 transitions. [2024-12-02 15:13:00,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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) [2024-12-02 15:13:00,287 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 87 transitions. [2024-12-02 15:13:00,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-12-02 15:13:00,288 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:13:00,288 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, 1] [2024-12-02 15:13:00,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-12-02 15:13:00,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-12-02 15:13:00,489 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-12-02 15:13:00,489 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:13:00,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1613174786, now seen corresponding path program 1 times [2024-12-02 15:13:00,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:13:00,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953355076] [2024-12-02 15:13:00,489 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:13:00,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:13:00,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:13:00,638 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 2 proven. 15 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2024-12-02 15:13:00,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:13:00,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953355076] [2024-12-02 15:13:00,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953355076] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:13:00,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318780056] [2024-12-02 15:13:00,639 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:13:00,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:13:00,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:13:00,641 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:13:00,643 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 15:13:00,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:13:00,683 INFO L256 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-12-02 15:13:00,684 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:13:00,770 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-12-02 15:13:00,770 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:13:00,970 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2024-12-02 15:13:00,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318780056] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:13:00,970 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:13:00,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 7] total 15 [2024-12-02 15:13:00,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935357587] [2024-12-02 15:13:00,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:13:00,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 15:13:00,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:13:00,972 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 15:13:00,972 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2024-12-02 15:13:00,972 INFO L87 Difference]: Start difference. First operand 64 states and 87 transitions. Second operand has 16 states, 15 states have (on average 3.0) internal successors, (45), 16 states have internal predecessors, (45), 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) [2024-12-02 15:13:01,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:13:01,178 INFO L93 Difference]: Finished difference Result 141 states and 217 transitions. [2024-12-02 15:13:01,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-12-02 15:13:01,178 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.0) internal successors, (45), 16 states have internal predecessors, (45), 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 52 [2024-12-02 15:13:01,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:13:01,181 INFO L225 Difference]: With dead ends: 141 [2024-12-02 15:13:01,181 INFO L226 Difference]: Without dead ends: 139 [2024-12-02 15:13:01,182 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 95 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=126, Invalid=336, Unknown=0, NotChecked=0, Total=462 [2024-12-02 15:13:01,183 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 14 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:13:01,183 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 174 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:13:01,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-12-02 15:13:01,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 98. [2024-12-02 15:13:01,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 76 states have (on average 1.0789473684210527) internal successors, (82), 75 states have internal predecessors, (82), 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) [2024-12-02 15:13:01,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 159 transitions. [2024-12-02 15:13:01,204 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 159 transitions. Word has length 52 [2024-12-02 15:13:01,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:13:01,204 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 159 transitions. [2024-12-02 15:13:01,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.0) internal successors, (45), 16 states have internal predecessors, (45), 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) [2024-12-02 15:13:01,205 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 159 transitions. [2024-12-02 15:13:01,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-12-02 15:13:01,208 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:13:01,208 INFO L218 NwaCegarLoop]: trace histogram [10, 8, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2024-12-02 15:13:01,217 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-12-02 15:13:01,408 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-12-02 15:13:01,409 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-12-02 15:13:01,409 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:13:01,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1779710852, now seen corresponding path program 1 times [2024-12-02 15:13:01,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:13:01,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148405691] [2024-12-02 15:13:01,409 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:13:01,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:13:01,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:13:01,600 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 50 proven. 80 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-12-02 15:13:01,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:13:01,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148405691] [2024-12-02 15:13:01,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148405691] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:13:01,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134644058] [2024-12-02 15:13:01,600 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 15:13:01,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:13:01,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:13:01,602 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:13:01,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 15:13:01,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:13:01,655 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-12-02 15:13:01,658 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:13:01,760 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 67 proven. 84 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-12-02 15:13:01,760 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:13:02,086 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 67 proven. 87 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-12-02 15:13:02,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134644058] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:13:02,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:13:02,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 11] total 16 [2024-12-02 15:13:02,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34435727] [2024-12-02 15:13:02,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:13:02,088 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-12-02 15:13:02,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:13:02,088 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-12-02 15:13:02,088 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2024-12-02 15:13:02,089 INFO L87 Difference]: Start difference. First operand 98 states and 159 transitions. Second operand has 16 states, 16 states have (on average 5.0625) internal successors, (81), 16 states have internal predecessors, (81), 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) [2024-12-02 15:13:02,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:13:02,259 INFO L93 Difference]: Finished difference Result 174 states and 299 transitions. [2024-12-02 15:13:02,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 15:13:02,260 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 5.0625) internal successors, (81), 16 states have internal predecessors, (81), 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 88 [2024-12-02 15:13:02,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:13:02,262 INFO L225 Difference]: With dead ends: 174 [2024-12-02 15:13:02,262 INFO L226 Difference]: Without dead ends: 80 [2024-12-02 15:13:02,264 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 169 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=164, Invalid=388, Unknown=0, NotChecked=0, Total=552 [2024-12-02 15:13:02,265 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 86 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:13:02,265 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 75 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:13:02,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2024-12-02 15:13:02,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 70. [2024-12-02 15:13:02,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 55 states have (on average 1.1090909090909091) internal successors, (61), 53 states have internal predecessors, (61), 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) [2024-12-02 15:13:02,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 94 transitions. [2024-12-02 15:13:02,276 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 94 transitions. Word has length 88 [2024-12-02 15:13:02,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:13:02,276 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 94 transitions. [2024-12-02 15:13:02,276 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 5.0625) internal successors, (81), 16 states have internal predecessors, (81), 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) [2024-12-02 15:13:02,276 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 94 transitions. [2024-12-02 15:13:02,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2024-12-02 15:13:02,279 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:13:02,279 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, 1] [2024-12-02 15:13:02,290 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 15:13:02,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-12-02 15:13:02,480 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-12-02 15:13:02,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:13:02,480 INFO L85 PathProgramCache]: Analyzing trace with hash 647250781, now seen corresponding path program 2 times [2024-12-02 15:13:02,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:13:02,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228468794] [2024-12-02 15:13:02,480 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:13:02,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:13:02,510 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:13:02,510 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:13:02,708 INFO L134 CoverageAnalysis]: Checked inductivity of 1021 backedges. 94 proven. 278 refuted. 0 times theorem prover too weak. 649 trivial. 0 not checked. [2024-12-02 15:13:02,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:13:02,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228468794] [2024-12-02 15:13:02,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228468794] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:13:02,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954642676] [2024-12-02 15:13:02,708 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:13:02,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:13:02,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:13:02,710 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:13:02,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 15:13:02,787 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:13:02,787 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:13:02,788 INFO L256 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 15:13:02,792 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:13:02,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1021 backedges. 449 proven. 15 refuted. 0 times theorem prover too weak. 557 trivial. 0 not checked. [2024-12-02 15:13:02,853 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:13:03,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1021 backedges. 95 proven. 328 refuted. 0 times theorem prover too weak. 598 trivial. 0 not checked. [2024-12-02 15:13:03,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954642676] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:13:03,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:13:03,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 14 [2024-12-02 15:13:03,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187553584] [2024-12-02 15:13:03,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:13:03,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-12-02 15:13:03,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:13:03,193 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-12-02 15:13:03,193 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-12-02 15:13:03,194 INFO L87 Difference]: Start difference. First operand 70 states and 94 transitions. Second operand has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 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) [2024-12-02 15:13:03,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:13:03,293 INFO L93 Difference]: Finished difference Result 129 states and 179 transitions. [2024-12-02 15:13:03,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 15:13:03,294 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 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 175 [2024-12-02 15:13:03,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:13:03,295 INFO L225 Difference]: With dead ends: 129 [2024-12-02 15:13:03,295 INFO L226 Difference]: Without dead ends: 63 [2024-12-02 15:13:03,295 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 342 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=210, Unknown=0, NotChecked=0, Total=306 [2024-12-02 15:13:03,296 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 56 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:13:03,296 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 60 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:13:03,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-12-02 15:13:03,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2024-12-02 15:13:03,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 48 states have (on average 1.1041666666666667) internal successors, (53), 46 states have internal predecessors, (53), 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) [2024-12-02 15:13:03,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 73 transitions. [2024-12-02 15:13:03,303 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 73 transitions. Word has length 175 [2024-12-02 15:13:03,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:13:03,303 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 73 transitions. [2024-12-02 15:13:03,304 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 14 states have internal predecessors, (70), 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) [2024-12-02 15:13:03,304 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 73 transitions. [2024-12-02 15:13:03,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-12-02 15:13:03,306 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:13:03,306 INFO L218 NwaCegarLoop]: trace histogram [20, 17, 17, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 7, 7, 7, 3, 1, 1, 1, 1, 1] [2024-12-02 15:13:03,314 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 15:13:03,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:13:03,507 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-12-02 15:13:03,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:13:03,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1753337527, now seen corresponding path program 3 times [2024-12-02 15:13:03,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:13:03,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189311734] [2024-12-02 15:13:03,507 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:13:03,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:13:03,530 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-12-02 15:13:03,530 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:13:03,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1144 backedges. 329 proven. 18 refuted. 0 times theorem prover too weak. 797 trivial. 0 not checked. [2024-12-02 15:13:03,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:13:03,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189311734] [2024-12-02 15:13:03,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189311734] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:13:03,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1555767983] [2024-12-02 15:13:03,642 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:13:03,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:13:03,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:13:03,644 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:13:03,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-12-02 15:13:03,702 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-12-02 15:13:03,702 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:13:03,703 INFO L256 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 15:13:03,707 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:13:03,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1144 backedges. 325 proven. 20 refuted. 0 times theorem prover too weak. 799 trivial. 0 not checked. [2024-12-02 15:13:03,758 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:13:04,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1144 backedges. 325 proven. 22 refuted. 0 times theorem prover too weak. 797 trivial. 0 not checked. [2024-12-02 15:13:04,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1555767983] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:13:04,103 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:13:04,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 9] total 13 [2024-12-02 15:13:04,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356598873] [2024-12-02 15:13:04,104 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:13:04,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 15:13:04,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:13:04,105 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 15:13:04,105 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-12-02 15:13:04,106 INFO L87 Difference]: Start difference. First operand 61 states and 73 transitions. Second operand has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 4 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2024-12-02 15:13:04,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:13:04,201 INFO L93 Difference]: Finished difference Result 114 states and 140 transitions. [2024-12-02 15:13:04,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 15:13:04,202 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 4 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) Word has length 184 [2024-12-02 15:13:04,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:13:04,203 INFO L225 Difference]: With dead ends: 114 [2024-12-02 15:13:04,203 INFO L226 Difference]: Without dead ends: 59 [2024-12-02 15:13:04,204 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 361 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=186, Unknown=0, NotChecked=0, Total=272 [2024-12-02 15:13:04,205 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 61 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:13:04,205 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 89 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:13:04,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2024-12-02 15:13:04,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 57. [2024-12-02 15:13:04,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 44 states have (on average 1.1136363636363635) internal successors, (49), 44 states have internal predecessors, (49), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (12), 8 states have call predecessors, (12), 5 states have call successors, (12) [2024-12-02 15:13:04,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 67 transitions. [2024-12-02 15:13:04,213 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 67 transitions. Word has length 184 [2024-12-02 15:13:04,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:13:04,213 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 67 transitions. [2024-12-02 15:13:04,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.846153846153846) internal successors, (63), 13 states have internal predecessors, (63), 4 states have call successors, (8), 1 states have call predecessors, (8), 5 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2024-12-02 15:13:04,214 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 67 transitions. [2024-12-02 15:13:04,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-12-02 15:13:04,215 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:13:04,215 INFO L218 NwaCegarLoop]: trace histogram [9, 8, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1] [2024-12-02 15:13:04,223 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-12-02 15:13:04,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-12-02 15:13:04,415 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting fibonacciErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-12-02 15:13:04,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:13:04,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1988790978, now seen corresponding path program 4 times [2024-12-02 15:13:04,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:13:04,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450000384] [2024-12-02 15:13:04,416 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:13:04,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:13:04,429 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:13:04,430 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:13:04,652 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 35 proven. 23 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2024-12-02 15:13:04,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:13:04,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450000384] [2024-12-02 15:13:04,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450000384] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:13:04,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083770025] [2024-12-02 15:13:04,653 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:13:04,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:13:04,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:13:04,654 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:13:04,657 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-12-02 15:13:04,709 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:13:04,709 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:13:04,710 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 15:13:04,711 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:13:04,772 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 60 proven. 4 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2024-12-02 15:13:04,772 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:13:04,927 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 60 proven. 4 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2024-12-02 15:13:04,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083770025] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:13:04,928 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:13:04,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 14 [2024-12-02 15:13:04,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233532964] [2024-12-02 15:13:04,928 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:13:04,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 15:13:04,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:13:04,929 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 15:13:04,929 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2024-12-02 15:13:04,930 INFO L87 Difference]: Start difference. First operand 57 states and 67 transitions. Second operand has 15 states, 14 states have (on average 3.5) internal successors, (49), 15 states have internal predecessors, (49), 5 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (10), 9 states have call predecessors, (10), 5 states have call successors, (10) [2024-12-02 15:13:04,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:13:04,988 INFO L93 Difference]: Finished difference Result 57 states and 67 transitions. [2024-12-02 15:13:04,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 15:13:04,988 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 3.5) internal successors, (49), 15 states have internal predecessors, (49), 5 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (10), 9 states have call predecessors, (10), 5 states have call successors, (10) Word has length 84 [2024-12-02 15:13:04,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:13:04,989 INFO L225 Difference]: With dead ends: 57 [2024-12-02 15:13:04,989 INFO L226 Difference]: Without dead ends: 56 [2024-12-02 15:13:04,990 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 165 SyntacticMatches, 5 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-12-02 15:13:04,990 INFO L435 NwaCegarLoop]: 27 mSDtfsCounter, 4 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 15:13:04,990 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 130 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 15:13:04,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-12-02 15:13:04,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-12-02 15:13:04,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 44 states have (on average 1.0681818181818181) internal successors, (47), 43 states have internal predecessors, (47), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (12), 8 states have call predecessors, (12), 5 states have call successors, (12) [2024-12-02 15:13:04,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2024-12-02 15:13:04,997 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 84 [2024-12-02 15:13:04,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:13:04,997 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2024-12-02 15:13:04,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 3.5) internal successors, (49), 15 states have internal predecessors, (49), 5 states have call successors, (7), 1 states have call predecessors, (7), 4 states have return successors, (10), 9 states have call predecessors, (10), 5 states have call successors, (10) [2024-12-02 15:13:04,997 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2024-12-02 15:13:04,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2024-12-02 15:13:04,998 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:13:04,998 INFO L218 NwaCegarLoop]: trace histogram [12, 10, 10, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 1, 1, 1, 1, 1] [2024-12-02 15:13:05,007 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-12-02 15:13:05,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:13:05,199 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-12-02 15:13:05,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:13:05,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1985904817, now seen corresponding path program 2 times [2024-12-02 15:13:05,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:13:05,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146350538] [2024-12-02 15:13:05,199 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:13:05,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:13:05,212 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:13:05,212 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:13:05,392 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 94 proven. 159 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2024-12-02 15:13:05,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:13:05,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146350538] [2024-12-02 15:13:05,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146350538] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:13:05,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669403626] [2024-12-02 15:13:05,393 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:13:05,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:13:05,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:13:05,394 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:13:05,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-12-02 15:13:05,458 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:13:05,458 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:13:05,459 INFO L256 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-12-02 15:13:05,461 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:13:05,565 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 106 proven. 158 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2024-12-02 15:13:05,565 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:13:06,145 INFO L134 CoverageAnalysis]: Checked inductivity of 382 backedges. 106 proven. 174 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2024-12-02 15:13:06,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669403626] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:13:06,145 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:13:06,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 15] total 20 [2024-12-02 15:13:06,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038171097] [2024-12-02 15:13:06,145 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:13:06,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-02 15:13:06,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:13:06,147 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-02 15:13:06,147 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2024-12-02 15:13:06,147 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand has 20 states, 20 states have (on average 4.65) internal successors, (93), 20 states have internal predecessors, (93), 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) [2024-12-02 15:13:06,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:13:06,380 INFO L93 Difference]: Finished difference Result 121 states and 147 transitions. [2024-12-02 15:13:06,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 15:13:06,381 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.65) internal successors, (93), 20 states have internal predecessors, (93), 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 111 [2024-12-02 15:13:06,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:13:06,382 INFO L225 Difference]: With dead ends: 121 [2024-12-02 15:13:06,382 INFO L226 Difference]: Without dead ends: 71 [2024-12-02 15:13:06,383 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 214 SyntacticMatches, 7 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=281, Invalid=711, Unknown=0, NotChecked=0, Total=992 [2024-12-02 15:13:06,383 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 168 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:13:06,383 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 92 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:13:06,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2024-12-02 15:13:06,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 62. [2024-12-02 15:13:06,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 49 states have (on average 1.0816326530612246) internal successors, (53), 48 states have internal predecessors, (53), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (11), 8 states have call predecessors, (11), 6 states have call successors, (11) [2024-12-02 15:13:06,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 71 transitions. [2024-12-02 15:13:06,390 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 71 transitions. Word has length 111 [2024-12-02 15:13:06,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:13:06,390 INFO L471 AbstractCegarLoop]: Abstraction has 62 states and 71 transitions. [2024-12-02 15:13:06,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.65) internal successors, (93), 20 states have internal predecessors, (93), 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) [2024-12-02 15:13:06,390 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 71 transitions. [2024-12-02 15:13:06,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-12-02 15:13:06,392 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:13:06,392 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, 1] [2024-12-02 15:13:06,401 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-12-02 15:13:06,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-12-02 15:13:06,593 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-12-02 15:13:06,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:13:06,593 INFO L85 PathProgramCache]: Analyzing trace with hash -728266247, now seen corresponding path program 3 times [2024-12-02 15:13:06,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:13:06,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506891128] [2024-12-02 15:13:06,593 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:13:06,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:13:06,618 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-12-02 15:13:06,618 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:13:07,130 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 88 proven. 189 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2024-12-02 15:13:07,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:13:07,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506891128] [2024-12-02 15:13:07,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506891128] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:13:07,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193636175] [2024-12-02 15:13:07,131 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:13:07,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:13:07,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:13:07,133 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:13:07,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-12-02 15:13:07,211 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-12-02 15:13:07,212 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:13:07,213 INFO L256 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-12-02 15:13:07,216 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:13:07,392 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 78 proven. 135 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked. [2024-12-02 15:13:07,393 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:13:08,485 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 144 proven. 128 refuted. 0 times theorem prover too weak. 459 trivial. 0 not checked. [2024-12-02 15:13:08,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193636175] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:13:08,485 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:13:08,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 17] total 32 [2024-12-02 15:13:08,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640809475] [2024-12-02 15:13:08,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:13:08,486 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-12-02 15:13:08,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:13:08,487 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-12-02 15:13:08,488 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=254, Invalid=802, Unknown=0, NotChecked=0, Total=1056 [2024-12-02 15:13:08,488 INFO L87 Difference]: Start difference. First operand 62 states and 71 transitions. Second operand has 33 states, 32 states have (on average 2.75) internal successors, (88), 33 states have internal predecessors, (88), 8 states have call successors, (9), 1 states have call predecessors, (9), 9 states have return successors, (22), 22 states have call predecessors, (22), 8 states have call successors, (22) [2024-12-02 15:13:08,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:13:08,785 INFO L93 Difference]: Finished difference Result 126 states and 179 transitions. [2024-12-02 15:13:08,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-12-02 15:13:08,786 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 32 states have (on average 2.75) internal successors, (88), 33 states have internal predecessors, (88), 8 states have call successors, (9), 1 states have call predecessors, (9), 9 states have return successors, (22), 22 states have call predecessors, (22), 8 states have call successors, (22) Word has length 150 [2024-12-02 15:13:08,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:13:08,788 INFO L225 Difference]: With dead ends: 126 [2024-12-02 15:13:08,788 INFO L226 Difference]: Without dead ends: 125 [2024-12-02 15:13:08,788 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 283 SyntacticMatches, 13 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 843 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=415, Invalid=1307, Unknown=0, NotChecked=0, Total=1722 [2024-12-02 15:13:08,789 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 24 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:13:08,789 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 268 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:13:08,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-12-02 15:13:08,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 98. [2024-12-02 15:13:08,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 77 states have (on average 1.051948051948052) internal successors, (81), 76 states have internal predecessors, (81), 11 states have call successors, (11), 5 states have call predecessors, (11), 9 states have return successors, (47), 16 states have call predecessors, (47), 10 states have call successors, (47) [2024-12-02 15:13:08,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 139 transitions. [2024-12-02 15:13:08,802 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 139 transitions. Word has length 150 [2024-12-02 15:13:08,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:13:08,802 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 139 transitions. [2024-12-02 15:13:08,803 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 32 states have (on average 2.75) internal successors, (88), 33 states have internal predecessors, (88), 8 states have call successors, (9), 1 states have call predecessors, (9), 9 states have return successors, (22), 22 states have call predecessors, (22), 8 states have call successors, (22) [2024-12-02 15:13:08,803 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 139 transitions. [2024-12-02 15:13:08,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2024-12-02 15:13:08,810 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:13:08,810 INFO L218 NwaCegarLoop]: trace histogram [46, 43, 37, 23, 23, 23, 23, 22, 22, 22, 22, 22, 21, 21, 21, 20, 14, 9, 1, 1, 1, 1, 1] [2024-12-02 15:13:08,818 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-12-02 15:13:09,010 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-12-02 15:13:09,011 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-12-02 15:13:09,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:13:09,011 INFO L85 PathProgramCache]: Analyzing trace with hash -37281864, now seen corresponding path program 4 times [2024-12-02 15:13:09,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:13:09,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599002021] [2024-12-02 15:13:09,011 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:13:09,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:13:09,037 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:13:09,037 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:13:09,343 INFO L134 CoverageAnalysis]: Checked inductivity of 6855 backedges. 382 proven. 1512 refuted. 0 times theorem prover too weak. 4961 trivial. 0 not checked. [2024-12-02 15:13:09,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:13:09,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599002021] [2024-12-02 15:13:09,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599002021] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:13:09,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1042140026] [2024-12-02 15:13:09,343 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:13:09,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:13:09,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:13:09,345 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:13:09,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-12-02 15:13:09,483 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:13:09,484 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:13:09,485 INFO L256 TraceCheckSpWp]: Trace formula consists of 551 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-12-02 15:13:09,491 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:13:09,659 INFO L134 CoverageAnalysis]: Checked inductivity of 6855 backedges. 3721 proven. 533 refuted. 0 times theorem prover too weak. 2601 trivial. 0 not checked. [2024-12-02 15:13:09,660 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:13:10,635 INFO L134 CoverageAnalysis]: Checked inductivity of 6855 backedges. 351 proven. 2148 refuted. 0 times theorem prover too weak. 4356 trivial. 0 not checked. [2024-12-02 15:13:10,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1042140026] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:13:10,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:13:10,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 18] total 23 [2024-12-02 15:13:10,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863453236] [2024-12-02 15:13:10,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:13:10,637 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-12-02 15:13:10,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:13:10,638 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-12-02 15:13:10,638 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2024-12-02 15:13:10,638 INFO L87 Difference]: Start difference. First operand 98 states and 139 transitions. Second operand has 23 states, 23 states have (on average 6.043478260869565) internal successors, (139), 23 states have internal predecessors, (139), 18 states have call successors, (25), 3 states have call predecessors, (25), 9 states have return successors, (28), 11 states have call predecessors, (28), 17 states have call successors, (28) [2024-12-02 15:13:10,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:13:10,942 INFO L93 Difference]: Finished difference Result 245 states and 394 transitions. [2024-12-02 15:13:10,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-12-02 15:13:10,943 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 6.043478260869565) internal successors, (139), 23 states have internal predecessors, (139), 18 states have call successors, (25), 3 states have call predecessors, (25), 9 states have return successors, (28), 11 states have call predecessors, (28), 17 states have call successors, (28) Word has length 439 [2024-12-02 15:13:10,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:13:10,945 INFO L225 Difference]: With dead ends: 245 [2024-12-02 15:13:10,945 INFO L226 Difference]: Without dead ends: 153 [2024-12-02 15:13:10,947 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 912 GetRequests, 865 SyntacticMatches, 10 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=411, Invalid=1071, Unknown=0, NotChecked=0, Total=1482 [2024-12-02 15:13:10,947 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 158 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:13:10,947 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 121 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:13:10,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-12-02 15:13:10,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 134. [2024-12-02 15:13:10,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 106 states have (on average 1.0566037735849056) internal successors, (112), 104 states have internal predecessors, (112), 15 states have call successors, (15), 6 states have call predecessors, (15), 12 states have return successors, (57), 23 states have call predecessors, (57), 14 states have call successors, (57) [2024-12-02 15:13:10,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 184 transitions. [2024-12-02 15:13:10,963 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 184 transitions. Word has length 439 [2024-12-02 15:13:10,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:13:10,964 INFO L471 AbstractCegarLoop]: Abstraction has 134 states and 184 transitions. [2024-12-02 15:13:10,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 6.043478260869565) internal successors, (139), 23 states have internal predecessors, (139), 18 states have call successors, (25), 3 states have call predecessors, (25), 9 states have return successors, (28), 11 states have call predecessors, (28), 17 states have call successors, (28) [2024-12-02 15:13:10,964 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 184 transitions. [2024-12-02 15:13:10,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2024-12-02 15:13:10,969 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:13:10,969 INFO L218 NwaCegarLoop]: trace histogram [36, 34, 29, 18, 18, 18, 18, 17, 17, 17, 17, 17, 17, 17, 17, 16, 11, 7, 1, 1, 1, 1, 1] [2024-12-02 15:13:10,978 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-12-02 15:13:11,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-12-02 15:13:11,170 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-12-02 15:13:11,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:13:11,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1381637925, now seen corresponding path program 5 times [2024-12-02 15:13:11,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:13:11,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241183173] [2024-12-02 15:13:11,170 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:13:11,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:13:11,194 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2024-12-02 15:13:11,194 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:13:11,524 INFO L134 CoverageAnalysis]: Checked inductivity of 4199 backedges. 734 proven. 1144 refuted. 0 times theorem prover too weak. 2321 trivial. 0 not checked. [2024-12-02 15:13:11,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:13:11,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241183173] [2024-12-02 15:13:11,524 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241183173] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:13:11,524 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2146860153] [2024-12-02 15:13:11,524 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:13:11,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:13:11,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:13:11,526 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:13:11,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-12-02 15:13:11,647 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2024-12-02 15:13:11,647 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:13:11,649 INFO L256 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-12-02 15:13:11,654 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:13:11,788 INFO L134 CoverageAnalysis]: Checked inductivity of 4199 backedges. 740 proven. 1135 refuted. 0 times theorem prover too weak. 2324 trivial. 0 not checked. [2024-12-02 15:13:11,788 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:13:12,870 INFO L134 CoverageAnalysis]: Checked inductivity of 4199 backedges. 737 proven. 1177 refuted. 0 times theorem prover too weak. 2285 trivial. 0 not checked. [2024-12-02 15:13:12,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2146860153] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:13:12,871 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:13:12,871 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14, 20] total 26 [2024-12-02 15:13:12,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650313257] [2024-12-02 15:13:12,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:13:12,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-12-02 15:13:12,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:13:12,873 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-12-02 15:13:12,873 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2024-12-02 15:13:12,873 INFO L87 Difference]: Start difference. First operand 134 states and 184 transitions. Second operand has 26 states, 26 states have (on average 5.1923076923076925) internal successors, (135), 26 states have internal predecessors, (135), 17 states have call successors, (23), 1 states have call predecessors, (23), 9 states have return successors, (27), 13 states have call predecessors, (27), 17 states have call successors, (27) [2024-12-02 15:13:13,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:13:13,257 INFO L93 Difference]: Finished difference Result 273 states and 426 transitions. [2024-12-02 15:13:13,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-12-02 15:13:13,258 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.1923076923076925) internal successors, (135), 26 states have internal predecessors, (135), 17 states have call successors, (23), 1 states have call predecessors, (23), 9 states have return successors, (27), 13 states have call predecessors, (27), 17 states have call successors, (27) Word has length 346 [2024-12-02 15:13:13,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:13:13,260 INFO L225 Difference]: With dead ends: 273 [2024-12-02 15:13:13,260 INFO L226 Difference]: Without dead ends: 145 [2024-12-02 15:13:13,262 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 732 GetRequests, 681 SyntacticMatches, 9 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=519, Invalid=1373, Unknown=0, NotChecked=0, Total=1892 [2024-12-02 15:13:13,263 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 179 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:13:13,263 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 148 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 15:13:13,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-12-02 15:13:13,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 131. [2024-12-02 15:13:13,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 106 states have (on average 1.0471698113207548) internal successors, (111), 102 states have internal predecessors, (111), 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) [2024-12-02 15:13:13,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 163 transitions. [2024-12-02 15:13:13,276 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 163 transitions. Word has length 346 [2024-12-02 15:13:13,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:13:13,277 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 163 transitions. [2024-12-02 15:13:13,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.1923076923076925) internal successors, (135), 26 states have internal predecessors, (135), 17 states have call successors, (23), 1 states have call predecessors, (23), 9 states have return successors, (27), 13 states have call predecessors, (27), 17 states have call successors, (27) [2024-12-02 15:13:13,277 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 163 transitions. [2024-12-02 15:13:13,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2024-12-02 15:13:13,279 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:13:13,279 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, 1] [2024-12-02 15:13:13,288 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-12-02 15:13:13,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-12-02 15:13:13,480 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-12-02 15:13:13,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:13:13,480 INFO L85 PathProgramCache]: Analyzing trace with hash -198377129, now seen corresponding path program 6 times [2024-12-02 15:13:13,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:13:13,480 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111263733] [2024-12-02 15:13:13,481 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:13:13,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:13:13,528 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2024-12-02 15:13:13,528 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:13:13,834 INFO L134 CoverageAnalysis]: Checked inductivity of 3282 backedges. 716 proven. 787 refuted. 0 times theorem prover too weak. 1779 trivial. 0 not checked. [2024-12-02 15:13:13,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:13:13,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111263733] [2024-12-02 15:13:13,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111263733] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:13:13,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041227564] [2024-12-02 15:13:13,834 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:13:13,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:13:13,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:13:13,836 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:13:13,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-12-02 15:13:13,984 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2024-12-02 15:13:13,984 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:13:13,986 INFO L256 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-12-02 15:13:13,990 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:13:14,116 INFO L134 CoverageAnalysis]: Checked inductivity of 3282 backedges. 724 proven. 797 refuted. 0 times theorem prover too weak. 1761 trivial. 0 not checked. [2024-12-02 15:13:14,116 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:13:15,137 INFO L134 CoverageAnalysis]: Checked inductivity of 3282 backedges. 740 proven. 824 refuted. 0 times theorem prover too weak. 1718 trivial. 0 not checked. [2024-12-02 15:13:15,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041227564] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:13:15,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:13:15,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 19] total 23 [2024-12-02 15:13:15,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643015471] [2024-12-02 15:13:15,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:13:15,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-12-02 15:13:15,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:13:15,138 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-12-02 15:13:15,138 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=402, Unknown=0, NotChecked=0, Total=506 [2024-12-02 15:13:15,139 INFO L87 Difference]: Start difference. First operand 131 states and 163 transitions. Second operand has 23 states, 23 states have (on average 5.391304347826087) internal successors, (124), 23 states have internal predecessors, (124), 14 states have call successors, (20), 1 states have call predecessors, (20), 10 states have return successors, (25), 13 states have call predecessors, (25), 14 states have call successors, (25) [2024-12-02 15:13:15,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:13:15,444 INFO L93 Difference]: Finished difference Result 262 states and 351 transitions. [2024-12-02 15:13:15,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-12-02 15:13:15,445 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 5.391304347826087) internal successors, (124), 23 states have internal predecessors, (124), 14 states have call successors, (20), 1 states have call predecessors, (20), 10 states have return successors, (25), 13 states have call predecessors, (25), 14 states have call successors, (25) Word has length 307 [2024-12-02 15:13:15,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:13:15,446 INFO L225 Difference]: With dead ends: 262 [2024-12-02 15:13:15,446 INFO L226 Difference]: Without dead ends: 137 [2024-12-02 15:13:15,447 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 646 GetRequests, 602 SyntacticMatches, 9 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=347, Invalid=985, Unknown=0, NotChecked=0, Total=1332 [2024-12-02 15:13:15,447 INFO L435 NwaCegarLoop]: 48 mSDtfsCounter, 110 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:13:15,447 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 211 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 15:13:15,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2024-12-02 15:13:15,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 122. [2024-12-02 15:13:15,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 98 states have (on average 1.0408163265306123) internal successors, (102), 97 states have internal predecessors, (102), 16 states have call successors, (16), 12 states have call predecessors, (16), 7 states have return successors, (30), 12 states have call predecessors, (30), 15 states have call successors, (30) [2024-12-02 15:13:15,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 148 transitions. [2024-12-02 15:13:15,457 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 148 transitions. Word has length 307 [2024-12-02 15:13:15,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:13:15,458 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 148 transitions. [2024-12-02 15:13:15,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 5.391304347826087) internal successors, (124), 23 states have internal predecessors, (124), 14 states have call successors, (20), 1 states have call predecessors, (20), 10 states have return successors, (25), 13 states have call predecessors, (25), 14 states have call successors, (25) [2024-12-02 15:13:15,458 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 148 transitions. [2024-12-02 15:13:15,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 662 [2024-12-02 15:13:15,463 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:13:15,463 INFO L218 NwaCegarLoop]: trace histogram [69, 65, 56, 35, 35, 35, 35, 33, 33, 33, 33, 33, 32, 32, 32, 31, 21, 13, 1, 1, 1, 1, 1] [2024-12-02 15:13:15,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-12-02 15:13:15,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-12-02 15:13:15,663 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-12-02 15:13:15,664 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:13:15,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1821776615, now seen corresponding path program 7 times [2024-12-02 15:13:15,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:13:15,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722045960] [2024-12-02 15:13:15,665 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:13:15,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:13:15,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:13:16,689 INFO L134 CoverageAnalysis]: Checked inductivity of 15777 backedges. 1164 proven. 3497 refuted. 0 times theorem prover too weak. 11116 trivial. 0 not checked. [2024-12-02 15:13:16,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:13:16,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722045960] [2024-12-02 15:13:16,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722045960] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:13:16,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090664545] [2024-12-02 15:13:16,690 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:13:16,690 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:13:16,690 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:13:16,691 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:13:16,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-12-02 15:13:16,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:13:16,927 INFO L256 TraceCheckSpWp]: Trace formula consists of 1239 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-12-02 15:13:16,932 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:13:17,106 INFO L134 CoverageAnalysis]: Checked inductivity of 15777 backedges. 6828 proven. 2740 refuted. 0 times theorem prover too weak. 6209 trivial. 0 not checked. [2024-12-02 15:13:17,106 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:13:18,826 INFO L134 CoverageAnalysis]: Checked inductivity of 15777 backedges. 1409 proven. 4200 refuted. 0 times theorem prover too weak. 10168 trivial. 0 not checked. [2024-12-02 15:13:18,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090664545] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:13:18,827 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:13:18,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 25] total 30 [2024-12-02 15:13:18,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76164811] [2024-12-02 15:13:18,827 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:13:18,828 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-12-02 15:13:18,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:13:18,829 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-12-02 15:13:18,829 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=730, Unknown=0, NotChecked=0, Total=870 [2024-12-02 15:13:18,830 INFO L87 Difference]: Start difference. First operand 122 states and 148 transitions. Second operand has 30 states, 30 states have (on average 6.0) internal successors, (180), 30 states have internal predecessors, (180), 25 states have call successors, (32), 4 states have call predecessors, (32), 12 states have return successors, (37), 14 states have call predecessors, (37), 23 states have call successors, (37) [2024-12-02 15:13:19,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:13:19,268 INFO L93 Difference]: Finished difference Result 283 states and 370 transitions. [2024-12-02 15:13:19,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-12-02 15:13:19,269 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 6.0) internal successors, (180), 30 states have internal predecessors, (180), 25 states have call successors, (32), 4 states have call predecessors, (32), 12 states have return successors, (37), 14 states have call predecessors, (37), 23 states have call successors, (37) Word has length 661 [2024-12-02 15:13:19,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:13:19,271 INFO L225 Difference]: With dead ends: 283 [2024-12-02 15:13:19,271 INFO L226 Difference]: Without dead ends: 167 [2024-12-02 15:13:19,272 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1373 GetRequests, 1304 SyntacticMatches, 15 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 739 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=796, Invalid=2284, Unknown=0, NotChecked=0, Total=3080 [2024-12-02 15:13:19,272 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 299 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:13:19,272 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 173 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 15:13:19,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2024-12-02 15:13:19,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 131. [2024-12-02 15:13:19,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 105 states have (on average 1.0380952380952382) internal successors, (109), 104 states have internal predecessors, (109), 17 states have call successors, (17), 13 states have call predecessors, (17), 8 states have return successors, (36), 13 states have call predecessors, (36), 16 states have call successors, (36) [2024-12-02 15:13:19,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 162 transitions. [2024-12-02 15:13:19,281 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 162 transitions. Word has length 661 [2024-12-02 15:13:19,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:13:19,281 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 162 transitions. [2024-12-02 15:13:19,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 6.0) internal successors, (180), 30 states have internal predecessors, (180), 25 states have call successors, (32), 4 states have call predecessors, (32), 12 states have return successors, (37), 14 states have call predecessors, (37), 23 states have call successors, (37) [2024-12-02 15:13:19,281 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 162 transitions. [2024-12-02 15:13:19,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2024-12-02 15:13:19,282 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:13:19,282 INFO L218 NwaCegarLoop]: trace histogram [42, 40, 34, 21, 21, 21, 21, 20, 20, 20, 20, 20, 20, 20, 20, 19, 13, 8, 1, 1, 1, 1, 1] [2024-12-02 15:13:19,295 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-12-02 15:13:19,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-12-02 15:13:19,483 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-12-02 15:13:19,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:13:19,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1368637202, now seen corresponding path program 8 times [2024-12-02 15:13:19,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:13:19,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814260471] [2024-12-02 15:13:19,484 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:13:19,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:13:19,515 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:13:19,515 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:13:21,444 INFO L134 CoverageAnalysis]: Checked inductivity of 5803 backedges. 830 proven. 1470 refuted. 0 times theorem prover too weak. 3503 trivial. 0 not checked. [2024-12-02 15:13:21,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:13:21,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814260471] [2024-12-02 15:13:21,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814260471] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:13:21,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468557687] [2024-12-02 15:13:21,444 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:13:21,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:13:21,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:13:21,446 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:13:21,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-12-02 15:13:21,605 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:13:21,605 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:13:21,608 INFO L256 TraceCheckSpWp]: Trace formula consists of 767 conjuncts, 81 conjuncts are in the unsatisfiable core [2024-12-02 15:13:21,618 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:13:21,966 INFO L134 CoverageAnalysis]: Checked inductivity of 5803 backedges. 820 proven. 1112 refuted. 0 times theorem prover too weak. 3871 trivial. 0 not checked. [2024-12-02 15:13:21,966 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:13:28,549 INFO L134 CoverageAnalysis]: Checked inductivity of 5803 backedges. 1149 proven. 1015 refuted. 0 times theorem prover too weak. 3639 trivial. 0 not checked. [2024-12-02 15:13:28,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468557687] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:13:28,550 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:13:28,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 18, 29] total 45 [2024-12-02 15:13:28,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024910842] [2024-12-02 15:13:28,550 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:13:28,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-12-02 15:13:28,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:13:28,551 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-12-02 15:13:28,552 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=1607, Unknown=0, NotChecked=0, Total=2070 [2024-12-02 15:13:28,552 INFO L87 Difference]: Start difference. First operand 131 states and 162 transitions. Second operand has 46 states, 45 states have (on average 2.6444444444444444) internal successors, (119), 46 states have internal predecessors, (119), 12 states have call successors, (13), 1 states have call predecessors, (13), 13 states have return successors, (31), 31 states have call predecessors, (31), 12 states have call successors, (31) [2024-12-02 15:13:28,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:13:28,716 INFO L93 Difference]: Finished difference Result 162 states and 216 transitions. [2024-12-02 15:13:28,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-12-02 15:13:28,716 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.6444444444444444) internal successors, (119), 46 states have internal predecessors, (119), 12 states have call successors, (13), 1 states have call predecessors, (13), 13 states have return successors, (31), 31 states have call predecessors, (31), 12 states have call successors, (31) Word has length 405 [2024-12-02 15:13:28,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:13:28,717 INFO L225 Difference]: With dead ends: 162 [2024-12-02 15:13:28,718 INFO L226 Difference]: Without dead ends: 161 [2024-12-02 15:13:28,718 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 893 GetRequests, 794 SyntacticMatches, 51 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2454 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=544, Invalid=1906, Unknown=0, NotChecked=0, Total=2450 [2024-12-02 15:13:28,719 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 14 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:13:28,719 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 255 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:13:28,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-12-02 15:13:28,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 152. [2024-12-02 15:13:28,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 122 states have (on average 1.0327868852459017) internal successors, (126), 120 states have internal predecessors, (126), 19 states have call successors, (19), 13 states have call predecessors, (19), 10 states have return successors, (56), 18 states have call predecessors, (56), 18 states have call successors, (56) [2024-12-02 15:13:28,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 201 transitions. [2024-12-02 15:13:28,734 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 201 transitions. Word has length 405 [2024-12-02 15:13:28,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:13:28,735 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 201 transitions. [2024-12-02 15:13:28,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.6444444444444444) internal successors, (119), 46 states have internal predecessors, (119), 12 states have call successors, (13), 1 states have call predecessors, (13), 13 states have return successors, (31), 31 states have call predecessors, (31), 12 states have call successors, (31) [2024-12-02 15:13:28,735 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 201 transitions. [2024-12-02 15:13:28,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1243 [2024-12-02 15:13:28,747 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:13:28,747 INFO L218 NwaCegarLoop]: trace histogram [129, 123, 105, 66, 66, 66, 66, 62, 62, 62, 62, 62, 61, 61, 61, 60, 39, 24, 1, 1, 1, 1, 1] [2024-12-02 15:13:28,756 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-12-02 15:13:28,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-12-02 15:13:28,948 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-12-02 15:13:28,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:13:28,948 INFO L85 PathProgramCache]: Analyzing trace with hash 700024010, now seen corresponding path program 9 times [2024-12-02 15:13:28,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:13:28,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345302436] [2024-12-02 15:13:28,948 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:13:28,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:13:29,125 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 61 check-sat command(s) [2024-12-02 15:13:29,125 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:13:40,290 INFO L134 CoverageAnalysis]: Checked inductivity of 56467 backedges. 16280 proven. 6125 refuted. 0 times theorem prover too weak. 34062 trivial. 0 not checked. [2024-12-02 15:13:40,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:13:40,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345302436] [2024-12-02 15:13:40,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345302436] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:13:40,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846081479] [2024-12-02 15:13:40,290 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:13:40,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:13:40,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:13:40,292 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:13:40,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-12-02 15:13:40,677 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 61 check-sat command(s) [2024-12-02 15:13:40,678 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:13:40,684 INFO L256 TraceCheckSpWp]: Trace formula consists of 1562 conjuncts, 165 conjuncts are in the unsatisfiable core [2024-12-02 15:13:40,694 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:13:41,325 INFO L134 CoverageAnalysis]: Checked inductivity of 56467 backedges. 16360 proven. 4596 refuted. 0 times theorem prover too weak. 35511 trivial. 0 not checked. [2024-12-02 15:13:41,326 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:14:05,471 INFO L134 CoverageAnalysis]: Checked inductivity of 56467 backedges. 17227 proven. 4261 refuted. 0 times theorem prover too weak. 34979 trivial. 0 not checked. [2024-12-02 15:14:05,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846081479] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:14:05,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:14:05,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 21, 38] total 53 [2024-12-02 15:14:05,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368094689] [2024-12-02 15:14:05,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:14:05,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2024-12-02 15:14:05,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:14:05,475 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2024-12-02 15:14:05,476 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=642, Invalid=2220, Unknown=0, NotChecked=0, Total=2862 [2024-12-02 15:14:05,477 INFO L87 Difference]: Start difference. First operand 152 states and 201 transitions. Second operand has 54 states, 53 states have (on average 2.811320754716981) internal successors, (149), 54 states have internal predecessors, (149), 14 states have call successors, (16), 1 states have call predecessors, (16), 16 states have return successors, (39), 38 states have call predecessors, (39), 14 states have call successors, (39) [2024-12-02 15:14:05,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:14:05,731 INFO L93 Difference]: Finished difference Result 210 states and 312 transitions. [2024-12-02 15:14:05,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-12-02 15:14:05,731 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 53 states have (on average 2.811320754716981) internal successors, (149), 54 states have internal predecessors, (149), 14 states have call successors, (16), 1 states have call predecessors, (16), 16 states have return successors, (39), 38 states have call predecessors, (39), 14 states have call successors, (39) Word has length 1242 [2024-12-02 15:14:05,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:14:05,735 INFO L225 Difference]: With dead ends: 210 [2024-12-02 15:14:05,735 INFO L226 Difference]: Without dead ends: 209 [2024-12-02 15:14:05,737 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2654 GetRequests, 2476 SyntacticMatches, 119 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6502 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=784, Invalid=2876, Unknown=0, NotChecked=0, Total=3660 [2024-12-02 15:14:05,737 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 32 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:14:05,737 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 176 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:14:05,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2024-12-02 15:14:05,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 170. [2024-12-02 15:14:05,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 136 states have (on average 1.0294117647058822) internal successors, (140), 134 states have internal predecessors, (140), 21 states have call successors, (21), 13 states have call predecessors, (21), 12 states have return successors, (84), 22 states have call predecessors, (84), 20 states have call successors, (84) [2024-12-02 15:14:05,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 245 transitions. [2024-12-02 15:14:05,755 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 245 transitions. Word has length 1242 [2024-12-02 15:14:05,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:14:05,757 INFO L471 AbstractCegarLoop]: Abstraction has 170 states and 245 transitions. [2024-12-02 15:14:05,757 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 53 states have (on average 2.811320754716981) internal successors, (149), 54 states have internal predecessors, (149), 14 states have call successors, (16), 1 states have call predecessors, (16), 16 states have return successors, (39), 38 states have call predecessors, (39), 14 states have call successors, (39) [2024-12-02 15:14:05,757 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 245 transitions. [2024-12-02 15:14:05,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1642 [2024-12-02 15:14:05,776 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:14:05,777 INFO L218 NwaCegarLoop]: trace histogram [168, 166, 136, 84, 84, 84, 84, 83, 83, 83, 83, 83, 83, 83, 83, 82, 52, 32, 1, 1, 1, 1, 1] [2024-12-02 15:14:05,784 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-12-02 15:14:05,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:14:05,978 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-12-02 15:14:05,978 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:14:05,979 INFO L85 PathProgramCache]: Analyzing trace with hash -1964269653, now seen corresponding path program 10 times [2024-12-02 15:14:05,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:14:05,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963540440] [2024-12-02 15:14:05,979 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:14:05,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:14:06,077 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:14:06,077 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:14:07,712 INFO L134 CoverageAnalysis]: Checked inductivity of 98905 backedges. 2965 proven. 13238 refuted. 0 times theorem prover too weak. 82702 trivial. 0 not checked. [2024-12-02 15:14:07,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:14:07,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963540440] [2024-12-02 15:14:07,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963540440] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:14:07,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1356196182] [2024-12-02 15:14:07,712 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:14:07,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:14:07,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:14:07,713 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:14:07,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-12-02 15:14:08,311 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:14:08,312 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:14:08,317 INFO L256 TraceCheckSpWp]: Trace formula consists of 2033 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-12-02 15:14:08,339 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:14:08,571 INFO L134 CoverageAnalysis]: Checked inductivity of 98905 backedges. 3492 proven. 15226 refuted. 0 times theorem prover too weak. 80187 trivial. 0 not checked. [2024-12-02 15:14:08,571 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:14:13,283 INFO L134 CoverageAnalysis]: Checked inductivity of 98905 backedges. 3492 proven. 15394 refuted. 0 times theorem prover too weak. 80019 trivial. 0 not checked. [2024-12-02 15:14:13,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1356196182] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:14:13,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:14:13,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 31] total 36 [2024-12-02 15:14:13,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617487520] [2024-12-02 15:14:13,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:14:13,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-12-02 15:14:13,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:14:13,286 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-12-02 15:14:13,287 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=1052, Unknown=0, NotChecked=0, Total=1260 [2024-12-02 15:14:13,287 INFO L87 Difference]: Start difference. First operand 170 states and 245 transitions. Second operand has 36 states, 36 states have (on average 5.722222222222222) internal successors, (206), 36 states have internal predecessors, (206), 30 states have call successors, (35), 1 states have call predecessors, (35), 15 states have return successors, (46), 18 states have call predecessors, (46), 30 states have call successors, (46) [2024-12-02 15:14:13,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:14:13,924 INFO L93 Difference]: Finished difference Result 410 states and 685 transitions. [2024-12-02 15:14:13,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-12-02 15:14:13,925 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 5.722222222222222) internal successors, (206), 36 states have internal predecessors, (206), 30 states have call successors, (35), 1 states have call predecessors, (35), 15 states have return successors, (46), 18 states have call predecessors, (46), 30 states have call successors, (46) Word has length 1641 [2024-12-02 15:14:13,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:14:13,928 INFO L225 Difference]: With dead ends: 410 [2024-12-02 15:14:13,928 INFO L226 Difference]: Without dead ends: 246 [2024-12-02 15:14:13,932 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3343 GetRequests, 3263 SyntacticMatches, 15 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1126 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1076, Invalid=3346, Unknown=0, NotChecked=0, Total=4422 [2024-12-02 15:14:13,932 INFO L435 NwaCegarLoop]: 51 mSDtfsCounter, 585 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 287 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 585 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 287 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:14:13,932 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [585 Valid, 220 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [287 Valid, 462 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 15:14:13,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2024-12-02 15:14:13,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 221. [2024-12-02 15:14:13,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 178 states have (on average 1.0280898876404494) internal successors, (183), 174 states have internal predecessors, (183), 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) [2024-12-02 15:14:13,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 318 transitions. [2024-12-02 15:14:13,958 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 318 transitions. Word has length 1641 [2024-12-02 15:14:13,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:14:13,959 INFO L471 AbstractCegarLoop]: Abstraction has 221 states and 318 transitions. [2024-12-02 15:14:13,959 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 5.722222222222222) internal successors, (206), 36 states have internal predecessors, (206), 30 states have call successors, (35), 1 states have call predecessors, (35), 15 states have return successors, (46), 18 states have call predecessors, (46), 30 states have call successors, (46) [2024-12-02 15:14:13,959 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 318 transitions. [2024-12-02 15:14:13,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1806 [2024-12-02 15:14:13,984 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:14:13,985 INFO L218 NwaCegarLoop]: trace histogram [186, 181, 151, 94, 94, 94, 94, 91, 91, 91, 91, 91, 90, 90, 90, 89, 57, 35, 1, 1, 1, 1, 1] [2024-12-02 15:14:13,993 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-12-02 15:14:14,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:14:14,185 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-12-02 15:14:14,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:14:14,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1558366827, now seen corresponding path program 11 times [2024-12-02 15:14:14,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:14:14,186 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077922574] [2024-12-02 15:14:14,186 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:14:14,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:14:14,399 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 84 check-sat command(s) [2024-12-02 15:14:14,399 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:14:16,179 INFO L134 CoverageAnalysis]: Checked inductivity of 119823 backedges. 11173 proven. 8437 refuted. 0 times theorem prover too weak. 100213 trivial. 0 not checked. [2024-12-02 15:14:16,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:14:16,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077922574] [2024-12-02 15:14:16,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077922574] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:14:16,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616343624] [2024-12-02 15:14:16,179 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:14:16,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:14:16,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:14:16,181 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:14:16,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-12-02 15:14:17,056 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 84 check-sat command(s) [2024-12-02 15:14:17,056 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:14:17,062 INFO L256 TraceCheckSpWp]: Trace formula consists of 2022 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-12-02 15:14:17,083 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:14:17,275 INFO L134 CoverageAnalysis]: Checked inductivity of 119823 backedges. 59881 proven. 2661 refuted. 0 times theorem prover too weak. 57281 trivial. 0 not checked. [2024-12-02 15:14:17,275 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:14:23,088 INFO L134 CoverageAnalysis]: Checked inductivity of 119823 backedges. 11171 proven. 8528 refuted. 0 times theorem prover too weak. 100124 trivial. 0 not checked. [2024-12-02 15:14:23,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616343624] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:14:23,089 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:14:23,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 27] total 31 [2024-12-02 15:14:23,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458715149] [2024-12-02 15:14:23,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:14:23,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-12-02 15:14:23,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:14:23,091 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-12-02 15:14:23,091 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=746, Unknown=0, NotChecked=0, Total=930 [2024-12-02 15:14:23,091 INFO L87 Difference]: Start difference. First operand 221 states and 318 transitions. Second operand has 31 states, 31 states have (on average 5.967741935483871) internal successors, (185), 31 states have internal predecessors, (185), 26 states have call successors, (32), 2 states have call predecessors, (32), 14 states have return successors, (41), 16 states have call predecessors, (41), 26 states have call successors, (41) [2024-12-02 15:14:23,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:14:23,471 INFO L93 Difference]: Finished difference Result 424 states and 646 transitions. [2024-12-02 15:14:23,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-12-02 15:14:23,472 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 5.967741935483871) internal successors, (185), 31 states have internal predecessors, (185), 26 states have call successors, (32), 2 states have call predecessors, (32), 14 states have return successors, (41), 16 states have call predecessors, (41), 26 states have call successors, (41) Word has length 1805 [2024-12-02 15:14:23,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:14:23,475 INFO L225 Difference]: With dead ends: 424 [2024-12-02 15:14:23,475 INFO L226 Difference]: Without dead ends: 209 [2024-12-02 15:14:23,478 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3655 GetRequests, 3595 SyntacticMatches, 13 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 681 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=609, Invalid=1743, Unknown=0, NotChecked=0, Total=2352 [2024-12-02 15:14:23,479 INFO L435 NwaCegarLoop]: 58 mSDtfsCounter, 140 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 669 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 732 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 15:14:23,479 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 281 Invalid, 732 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 669 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 15:14:23,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2024-12-02 15:14:23,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 167. [2024-12-02 15:14:23,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 134 states have (on average 1.0223880597014925) internal successors, (137), 132 states have internal predecessors, (137), 21 states have call successors, (21), 14 states have call predecessors, (21), 11 states have return successors, (67), 20 states have call predecessors, (67), 20 states have call successors, (67) [2024-12-02 15:14:23,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 225 transitions. [2024-12-02 15:14:23,497 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 225 transitions. Word has length 1805 [2024-12-02 15:14:23,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:14:23,498 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 225 transitions. [2024-12-02 15:14:23,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 5.967741935483871) internal successors, (185), 31 states have internal predecessors, (185), 26 states have call successors, (32), 2 states have call predecessors, (32), 14 states have return successors, (41), 16 states have call predecessors, (41), 26 states have call successors, (41) [2024-12-02 15:14:23,498 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 225 transitions. [2024-12-02 15:14:23,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1990 [2024-12-02 15:14:23,525 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:14:23,526 INFO L218 NwaCegarLoop]: trace histogram [204, 201, 165, 102, 102, 102, 102, 101, 101, 101, 101, 101, 100, 100, 100, 99, 63, 39, 1, 1, 1, 1, 1] [2024-12-02 15:14:23,539 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-12-02 15:14:23,726 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-12-02 15:14:23,726 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-12-02 15:14:23,727 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:14:23,727 INFO L85 PathProgramCache]: Analyzing trace with hash 383414153, now seen corresponding path program 12 times [2024-12-02 15:14:23,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:14:23,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430928489] [2024-12-02 15:14:23,727 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:14:23,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:14:23,927 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 96 check-sat command(s) [2024-12-02 15:14:23,927 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:14:27,064 INFO L134 CoverageAnalysis]: Checked inductivity of 145645 backedges. 6440 proven. 17015 refuted. 0 times theorem prover too weak. 122190 trivial. 0 not checked. [2024-12-02 15:14:27,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:14:27,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430928489] [2024-12-02 15:14:27,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430928489] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:14:27,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088797099] [2024-12-02 15:14:27,064 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:14:27,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:14:27,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:14:27,066 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:14:27,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-12-02 15:14:28,129 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 96 check-sat command(s) [2024-12-02 15:14:28,129 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:14:28,136 INFO L256 TraceCheckSpWp]: Trace formula consists of 2386 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-12-02 15:14:28,149 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:14:28,385 INFO L134 CoverageAnalysis]: Checked inductivity of 145645 backedges. 71312 proven. 9390 refuted. 0 times theorem prover too weak. 64943 trivial. 0 not checked. [2024-12-02 15:14:28,386 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:14:33,335 INFO L134 CoverageAnalysis]: Checked inductivity of 145645 backedges. 6910 proven. 18240 refuted. 0 times theorem prover too weak. 120495 trivial. 0 not checked. [2024-12-02 15:14:33,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088797099] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:14:33,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:14:33,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22, 34] total 40 [2024-12-02 15:14:33,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481071642] [2024-12-02 15:14:33,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:14:33,337 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-12-02 15:14:33,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:14:33,338 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-12-02 15:14:33,338 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=234, Invalid=1326, Unknown=0, NotChecked=0, Total=1560 [2024-12-02 15:14:33,338 INFO L87 Difference]: Start difference. First operand 167 states and 225 transitions. Second operand has 40 states, 40 states have (on average 6.0) internal successors, (240), 39 states have internal predecessors, (240), 35 states have call successors, (43), 5 states have call predecessors, (43), 17 states have return successors, (51), 20 states have call predecessors, (51), 32 states have call successors, (51) [2024-12-02 15:14:34,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:14:34,276 INFO L93 Difference]: Finished difference Result 450 states and 692 transitions. [2024-12-02 15:14:34,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2024-12-02 15:14:34,277 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 6.0) internal successors, (240), 39 states have internal predecessors, (240), 35 states have call successors, (43), 5 states have call predecessors, (43), 17 states have return successors, (51), 20 states have call predecessors, (51), 32 states have call successors, (51) Word has length 1989 [2024-12-02 15:14:34,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:14:34,281 INFO L225 Difference]: With dead ends: 450 [2024-12-02 15:14:34,281 INFO L226 Difference]: Without dead ends: 289 [2024-12-02 15:14:34,285 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4065 GetRequests, 3959 SyntacticMatches, 16 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2300 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1892, Invalid=6480, Unknown=0, NotChecked=0, Total=8372 [2024-12-02 15:14:34,287 INFO L435 NwaCegarLoop]: 49 mSDtfsCounter, 779 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:14:34,287 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 265 Invalid, 844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 580 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 15:14:34,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2024-12-02 15:14:34,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 254. [2024-12-02 15:14:34,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 207 states have (on average 1.0338164251207729) internal successors, (214), 202 states have internal predecessors, (214), 33 states have call successors, (33), 26 states have call predecessors, (33), 13 states have return successors, (103), 25 states have call predecessors, (103), 32 states have call successors, (103) [2024-12-02 15:14:34,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 350 transitions. [2024-12-02 15:14:34,312 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 350 transitions. Word has length 1989 [2024-12-02 15:14:34,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:14:34,313 INFO L471 AbstractCegarLoop]: Abstraction has 254 states and 350 transitions. [2024-12-02 15:14:34,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 6.0) internal successors, (240), 39 states have internal predecessors, (240), 35 states have call successors, (43), 5 states have call predecessors, (43), 17 states have return successors, (51), 20 states have call predecessors, (51), 32 states have call successors, (51) [2024-12-02 15:14:34,314 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 350 transitions. [2024-12-02 15:14:34,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1426 [2024-12-02 15:14:34,328 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:14:34,329 INFO L218 NwaCegarLoop]: trace histogram [146, 144, 118, 73, 73, 73, 73, 72, 72, 72, 72, 72, 72, 72, 72, 71, 45, 28, 1, 1, 1, 1, 1] [2024-12-02 15:14:34,345 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-12-02 15:14:34,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-12-02 15:14:34,529 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-12-02 15:14:34,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:14:34,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1837213866, now seen corresponding path program 13 times [2024-12-02 15:14:34,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:14:34,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358245717] [2024-12-02 15:14:34,530 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:14:34,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:14:34,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:14:37,466 INFO L134 CoverageAnalysis]: Checked inductivity of 74441 backedges. 8076 proven. 3643 refuted. 0 times theorem prover too weak. 62722 trivial. 0 not checked. [2024-12-02 15:14:37,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:14:37,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358245717] [2024-12-02 15:14:37,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358245717] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:14:37,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633181093] [2024-12-02 15:14:37,467 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:14:37,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:14:37,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:14:37,469 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:14:37,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-12-02 15:14:38,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:14:38,199 INFO L256 TraceCheckSpWp]: Trace formula consists of 2651 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-12-02 15:14:38,207 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:14:38,422 INFO L134 CoverageAnalysis]: Checked inductivity of 74441 backedges. 38082 proven. 5527 refuted. 0 times theorem prover too weak. 30832 trivial. 0 not checked. [2024-12-02 15:14:38,422 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:14:44,630 INFO L134 CoverageAnalysis]: Checked inductivity of 74441 backedges. 5184 proven. 11737 refuted. 0 times theorem prover too weak. 57520 trivial. 0 not checked. [2024-12-02 15:14:44,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633181093] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:14:44,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:14:44,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 31] total 36 [2024-12-02 15:14:44,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9014712] [2024-12-02 15:14:44,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:14:44,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-12-02 15:14:44,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:14:44,632 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-12-02 15:14:44,632 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=1041, Unknown=0, NotChecked=0, Total=1260 [2024-12-02 15:14:44,632 INFO L87 Difference]: Start difference. First operand 254 states and 350 transitions. Second operand has 36 states, 36 states have (on average 5.916666666666667) internal successors, (213), 36 states have internal predecessors, (213), 30 states have call successors, (37), 2 states have call predecessors, (37), 16 states have return successors, (51), 18 states have call predecessors, (51), 30 states have call successors, (51) [2024-12-02 15:14:45,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:14:45,130 INFO L93 Difference]: Finished difference Result 514 states and 735 transitions. [2024-12-02 15:14:45,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-12-02 15:14:45,130 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), 30 states have call successors, (37), 2 states have call predecessors, (37), 16 states have return successors, (51), 18 states have call predecessors, (51), 30 states have call successors, (51) Word has length 1425 [2024-12-02 15:14:45,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:14:45,132 INFO L225 Difference]: With dead ends: 514 [2024-12-02 15:14:45,132 INFO L226 Difference]: Without dead ends: 266 [2024-12-02 15:14:45,134 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2895 GetRequests, 2825 SyntacticMatches, 15 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1029 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=805, Invalid=2387, Unknown=0, NotChecked=0, Total=3192 [2024-12-02 15:14:45,134 INFO L435 NwaCegarLoop]: 63 mSDtfsCounter, 263 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:14:45,134 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 281 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 15:14:45,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-12-02 15:14:45,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 218. [2024-12-02 15:14:45,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 177 states have (on average 1.0282485875706215) internal successors, (182), 174 states have internal predecessors, (182), 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) [2024-12-02 15:14:45,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 288 transitions. [2024-12-02 15:14:45,146 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 288 transitions. Word has length 1425 [2024-12-02 15:14:45,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:14:45,147 INFO L471 AbstractCegarLoop]: Abstraction has 218 states and 288 transitions. [2024-12-02 15:14:45,147 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), 30 states have call successors, (37), 2 states have call predecessors, (37), 16 states have return successors, (51), 18 states have call predecessors, (51), 30 states have call successors, (51) [2024-12-02 15:14:45,147 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 288 transitions. [2024-12-02 15:14:45,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1485 [2024-12-02 15:14:45,182 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:14:45,182 INFO L218 NwaCegarLoop]: trace histogram [152, 150, 123, 76, 76, 76, 76, 75, 75, 75, 75, 75, 75, 75, 75, 74, 47, 29, 1, 1, 1, 1, 1] [2024-12-02 15:14:45,195 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-12-02 15:14:45,382 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:14:45,382 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-12-02 15:14:45,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:14:45,385 INFO L85 PathProgramCache]: Analyzing trace with hash -391414713, now seen corresponding path program 14 times [2024-12-02 15:14:45,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:14:45,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303659901] [2024-12-02 15:14:45,385 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:14:45,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:14:45,526 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:14:45,526 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:14:49,161 INFO L134 CoverageAnalysis]: Checked inductivity of 80780 backedges. 6669 proven. 10102 refuted. 0 times theorem prover too weak. 64009 trivial. 0 not checked. [2024-12-02 15:14:49,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:14:49,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303659901] [2024-12-02 15:14:49,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303659901] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:14:49,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3899966] [2024-12-02 15:14:49,162 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:14:49,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:14:49,162 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:14:49,163 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:14:49,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-12-02 15:14:49,899 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:14:49,899 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:14:49,906 INFO L256 TraceCheckSpWp]: Trace formula consists of 2760 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-12-02 15:14:49,913 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:14:50,133 INFO L134 CoverageAnalysis]: Checked inductivity of 80780 backedges. 7451 proven. 10882 refuted. 0 times theorem prover too weak. 62447 trivial. 0 not checked. [2024-12-02 15:14:50,133 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:14:55,703 INFO L134 CoverageAnalysis]: Checked inductivity of 80780 backedges. 7451 proven. 11117 refuted. 0 times theorem prover too weak. 62212 trivial. 0 not checked. [2024-12-02 15:14:55,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3899966] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:14:55,703 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:14:55,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21, 35] total 40 [2024-12-02 15:14:55,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423373573] [2024-12-02 15:14:55,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:14:55,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-12-02 15:14:55,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:14:55,705 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-12-02 15:14:55,706 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=1297, Unknown=0, NotChecked=0, Total=1560 [2024-12-02 15:14:55,706 INFO L87 Difference]: Start difference. First operand 218 states and 288 transitions. Second operand has 40 states, 40 states have (on average 5.55) internal successors, (222), 40 states have internal predecessors, (222), 33 states have call successors, (37), 1 states have call predecessors, (37), 17 states have return successors, (50), 19 states have call predecessors, (50), 33 states have call successors, (50) [2024-12-02 15:14:56,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:14:56,374 INFO L93 Difference]: Finished difference Result 460 states and 629 transitions. [2024-12-02 15:14:56,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-12-02 15:14:56,374 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 5.55) internal successors, (222), 40 states have internal predecessors, (222), 33 states have call successors, (37), 1 states have call predecessors, (37), 17 states have return successors, (50), 19 states have call predecessors, (50), 33 states have call successors, (50) Word has length 1484 [2024-12-02 15:14:56,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:14:56,377 INFO L225 Difference]: With dead ends: 460 [2024-12-02 15:14:56,377 INFO L226 Difference]: Without dead ends: 248 [2024-12-02 15:14:56,378 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3024 GetRequests, 2945 SyntacticMatches, 17 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1234 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=999, Invalid=3033, Unknown=0, NotChecked=0, Total=4032 [2024-12-02 15:14:56,379 INFO L435 NwaCegarLoop]: 70 mSDtfsCounter, 330 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 975 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 1145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 15:14:56,379 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 408 Invalid, 1145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 975 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 15:14:56,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2024-12-02 15:14:56,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 188. [2024-12-02 15:14:56,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 151 states have (on average 1.0198675496688743) internal successors, (154), 150 states have internal predecessors, (154), 25 states have call successors, (25), 18 states have call predecessors, (25), 11 states have return successors, (68), 19 states have call predecessors, (68), 24 states have call successors, (68) [2024-12-02 15:14:56,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 247 transitions. [2024-12-02 15:14:56,393 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 247 transitions. Word has length 1484 [2024-12-02 15:14:56,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:14:56,393 INFO L471 AbstractCegarLoop]: Abstraction has 188 states and 247 transitions. [2024-12-02 15:14:56,393 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 5.55) internal successors, (222), 40 states have internal predecessors, (222), 33 states have call successors, (37), 1 states have call predecessors, (37), 17 states have return successors, (50), 19 states have call predecessors, (50), 33 states have call successors, (50) [2024-12-02 15:14:56,394 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 247 transitions. [2024-12-02 15:14:56,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1734 [2024-12-02 15:14:56,428 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:14:56,428 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, 1] [2024-12-02 15:14:56,443 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-12-02 15:14:56,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:14:56,628 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-12-02 15:14:56,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:14:56,630 INFO L85 PathProgramCache]: Analyzing trace with hash 747157656, now seen corresponding path program 15 times [2024-12-02 15:14:56,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:14:56,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259564663] [2024-12-02 15:14:56,631 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:14:56,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:14:56,916 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 122 check-sat command(s) [2024-12-02 15:14:56,916 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:16:21,310 INFO L134 CoverageAnalysis]: Checked inductivity of 110385 backedges. 20510 proven. 26132 refuted. 0 times theorem prover too weak. 63743 trivial. 0 not checked. [2024-12-02 15:16:21,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:16:21,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259564663] [2024-12-02 15:16:21,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259564663] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:16:21,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803058378] [2024-12-02 15:16:21,310 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 15:16:21,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:16:21,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:16:21,312 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:16:21,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-12-02 15:16:22,613 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 122 check-sat command(s) [2024-12-02 15:16:22,613 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:16:22,626 INFO L256 TraceCheckSpWp]: Trace formula consists of 3201 conjuncts, 353 conjuncts are in the unsatisfiable core [2024-12-02 15:16:22,637 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:16:23,888 INFO L134 CoverageAnalysis]: Checked inductivity of 110385 backedges. 18335 proven. 20554 refuted. 0 times theorem prover too weak. 71496 trivial. 0 not checked. [2024-12-02 15:16:23,888 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:18:25,231 INFO L134 CoverageAnalysis]: Checked inductivity of 110385 backedges. 20425 proven. 19669 refuted. 0 times theorem prover too weak. 70291 trivial. 0 not checked. [2024-12-02 15:18:25,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803058378] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:18:25,232 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:18:25,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 27, 47] total 67 [2024-12-02 15:18:25,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259738080] [2024-12-02 15:18:25,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:18:25,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2024-12-02 15:18:25,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:18:25,234 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2024-12-02 15:18:25,235 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=998, Invalid=3558, Unknown=0, NotChecked=0, Total=4556 [2024-12-02 15:18:25,235 INFO L87 Difference]: Start difference. First operand 188 states and 247 transitions. Second operand has 68 states, 67 states have (on average 2.582089552238806) internal successors, (173), 68 states have internal predecessors, (173), 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) [2024-12-02 15:18:25,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:18:25,458 INFO L93 Difference]: Finished difference Result 219 states and 307 transitions. [2024-12-02 15:18:25,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2024-12-02 15:18:25,458 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 67 states have (on average 2.582089552238806) internal successors, (173), 68 states have internal predecessors, (173), 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 1733 [2024-12-02 15:18:25,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:18:25,462 INFO L225 Difference]: With dead ends: 219 [2024-12-02 15:18:25,463 INFO L226 Difference]: Without dead ends: 218 [2024-12-02 15:18:25,464 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3821 GetRequests, 3426 SyntacticMatches, 325 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16620 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1112, Invalid=4000, Unknown=0, NotChecked=0, Total=5112 [2024-12-02 15:18:25,464 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 16 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 15:18:25,465 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 234 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 15:18:25,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2024-12-02 15:18:25,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 209. [2024-12-02 15:18:25,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 168 states have (on average 1.0178571428571428) internal successors, (171), 166 states have internal predecessors, (171), 27 states have call successors, (27), 18 states have call predecessors, (27), 13 states have return successors, (94), 24 states have call predecessors, (94), 26 states have call successors, (94) [2024-12-02 15:18:25,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 292 transitions. [2024-12-02 15:18:25,487 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 292 transitions. Word has length 1733 [2024-12-02 15:18:25,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:18:25,488 INFO L471 AbstractCegarLoop]: Abstraction has 209 states and 292 transitions. [2024-12-02 15:18:25,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 67 states have (on average 2.582089552238806) internal successors, (173), 68 states have internal predecessors, (173), 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) [2024-12-02 15:18:25,489 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 292 transitions. [2024-12-02 15:18:25,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5239 [2024-12-02 15:18:25,602 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:18:25,602 INFO L218 NwaCegarLoop]: trace histogram [536, 531, 434, 269, 269, 269, 269, 266, 266, 266, 266, 266, 265, 265, 265, 264, 165, 102, 1, 1, 1, 1, 1] [2024-12-02 15:18:25,613 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-12-02 15:18:25,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-12-02 15:18:25,803 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-12-02 15:18:25,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:18:25,805 INFO L85 PathProgramCache]: Analyzing trace with hash 2070085572, now seen corresponding path program 16 times [2024-12-02 15:18:25,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:18:25,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411434048] [2024-12-02 15:18:25,805 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:18:25,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:18:26,409 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:18:26,409 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:18:43,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1016209 backedges. 14311 proven. 58941 refuted. 0 times theorem prover too weak. 942957 trivial. 0 not checked. [2024-12-02 15:18:43,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:18:43,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411434048] [2024-12-02 15:18:43,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411434048] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:18:43,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721089226] [2024-12-02 15:18:43,955 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 15:18:43,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:18:43,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:18:43,957 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:18:43,958 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-12-02 15:18:45,852 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 15:18:45,852 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:18:45,870 INFO L256 TraceCheckSpWp]: Trace formula consists of 6481 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-12-02 15:18:45,894 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:18:46,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1016209 backedges. 467366 proven. 37337 refuted. 0 times theorem prover too weak. 511506 trivial. 0 not checked. [2024-12-02 15:18:46,232 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:18:57,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1016209 backedges. 17063 proven. 65322 refuted. 0 times theorem prover too weak. 933824 trivial. 0 not checked. [2024-12-02 15:18:57,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721089226] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:18:57,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:18:57,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 39] total 44 [2024-12-02 15:18:57,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94183849] [2024-12-02 15:18:57,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:18:57,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-12-02 15:18:57,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:18:57,421 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-12-02 15:18:57,421 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=1621, Unknown=0, NotChecked=0, Total=1892 [2024-12-02 15:18:57,422 INFO L87 Difference]: Start difference. First operand 209 states and 292 transitions. Second operand has 44 states, 44 states have (on average 5.954545454545454) internal successors, (262), 44 states have internal predecessors, (262), 39 states have call successors, (46), 6 states have call predecessors, (46), 18 states have return successors, (55), 20 states have call predecessors, (55), 35 states have call successors, (55) [2024-12-02 15:18:58,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:18:58,581 INFO L93 Difference]: Finished difference Result 542 states and 819 transitions. [2024-12-02 15:18:58,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2024-12-02 15:18:58,582 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 44 states have (on average 5.954545454545454) internal successors, (262), 44 states have internal predecessors, (262), 39 states have call successors, (46), 6 states have call predecessors, (46), 18 states have return successors, (55), 20 states have call predecessors, (55), 35 states have call successors, (55) Word has length 5238 [2024-12-02 15:18:58,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:18:58,585 INFO L225 Difference]: With dead ends: 542 [2024-12-02 15:18:58,585 INFO L226 Difference]: Without dead ends: 339 [2024-12-02 15:18:58,587 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10580 GetRequests, 10451 SyntacticMatches, 25 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3156 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=2660, Invalid=8470, Unknown=0, NotChecked=0, Total=11130 [2024-12-02 15:18:58,588 INFO L435 NwaCegarLoop]: 43 mSDtfsCounter, 640 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:18:58,588 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [640 Valid, 272 Invalid, 792 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 15:18:58,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2024-12-02 15:18:58,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 266. [2024-12-02 15:18:58,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 216 states have (on average 1.0231481481481481) internal successors, (221), 212 states have internal predecessors, (221), 35 states have call successors, (35), 26 states have call predecessors, (35), 14 states have return successors, (112), 27 states have call predecessors, (112), 34 states have call successors, (112) [2024-12-02 15:18:58,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 368 transitions. [2024-12-02 15:18:58,613 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 368 transitions. Word has length 5238 [2024-12-02 15:18:58,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:18:58,615 INFO L471 AbstractCegarLoop]: Abstraction has 266 states and 368 transitions. [2024-12-02 15:18:58,615 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 44 states have (on average 5.954545454545454) internal successors, (262), 44 states have internal predecessors, (262), 39 states have call successors, (46), 6 states have call predecessors, (46), 18 states have return successors, (55), 20 states have call predecessors, (55), 35 states have call successors, (55) [2024-12-02 15:18:58,615 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 368 transitions. [2024-12-02 15:18:58,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3480 [2024-12-02 15:18:58,682 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:18:58,684 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, 1] [2024-12-02 15:18:58,699 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-12-02 15:18:58,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-12-02 15:18:58,884 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-12-02 15:18:58,885 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:18:58,885 INFO L85 PathProgramCache]: Analyzing trace with hash -24414825, now seen corresponding path program 17 times [2024-12-02 15:18:58,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:18:58,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235001854] [2024-12-02 15:18:58,886 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:18:58,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:18:59,784 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 257 check-sat command(s) [2024-12-02 15:18:59,784 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:19:16,210 INFO L134 CoverageAnalysis]: Checked inductivity of 447433 backedges. 21833 proven. 27297 refuted. 0 times theorem prover too weak. 398303 trivial. 0 not checked. [2024-12-02 15:19:16,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:19:16,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235001854] [2024-12-02 15:19:16,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235001854] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:19:16,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [759559009] [2024-12-02 15:19:16,210 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 15:19:16,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:19:16,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:19:16,212 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:19:16,213 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-12-02 15:19:19,979 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 257 check-sat command(s) [2024-12-02 15:19:19,979 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:19:19,997 INFO L256 TraceCheckSpWp]: Trace formula consists of 6135 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-12-02 15:19:20,014 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:19:20,260 INFO L134 CoverageAnalysis]: Checked inductivity of 447433 backedges. 211382 proven. 11139 refuted. 0 times theorem prover too weak. 224912 trivial. 0 not checked. [2024-12-02 15:19:20,260 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:19:29,530 INFO L134 CoverageAnalysis]: Checked inductivity of 447433 backedges. 21352 proven. 26366 refuted. 0 times theorem prover too weak. 399715 trivial. 0 not checked. [2024-12-02 15:19:29,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [759559009] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:19:29,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:19:29,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 21, 35] total 43 [2024-12-02 15:19:29,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649597287] [2024-12-02 15:19:29,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:19:29,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2024-12-02 15:19:29,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:19:29,533 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2024-12-02 15:19:29,534 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=318, Invalid=1488, Unknown=0, NotChecked=0, Total=1806 [2024-12-02 15:19:29,534 INFO L87 Difference]: Start difference. First operand 266 states and 368 transitions. Second operand has 43 states, 43 states have (on average 5.72093023255814) internal successors, (246), 43 states have internal predecessors, (246), 34 states have call successors, (42), 2 states have call predecessors, (42), 19 states have return successors, (55), 23 states have call predecessors, (55), 34 states have call successors, (55) [2024-12-02 15:19:30,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:19:30,137 INFO L93 Difference]: Finished difference Result 565 states and 782 transitions. [2024-12-02 15:19:30,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-12-02 15:19:30,137 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 5.72093023255814) internal successors, (246), 43 states have internal predecessors, (246), 34 states have call successors, (42), 2 states have call predecessors, (42), 19 states have return successors, (55), 23 states have call predecessors, (55), 34 states have call successors, (55) Word has length 3479 [2024-12-02 15:19:30,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:19:30,141 INFO L225 Difference]: With dead ends: 565 [2024-12-02 15:19:30,141 INFO L226 Difference]: Without dead ends: 305 [2024-12-02 15:19:30,142 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7019 GetRequests, 6937 SyntacticMatches, 17 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1480 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1081, Invalid=3341, Unknown=0, NotChecked=0, Total=4422 [2024-12-02 15:19:30,143 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 409 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 15:19:30,143 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 377 Invalid, 989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 821 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 15:19:30,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2024-12-02 15:19:30,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 245. [2024-12-02 15:19:30,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 199 states have (on average 1.020100502512563) internal successors, (203), 196 states have internal predecessors, (203), 33 states have call successors, (33), 26 states have call predecessors, (33), 12 states have return successors, (77), 22 states have call predecessors, (77), 32 states have call successors, (77) [2024-12-02 15:19:30,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 313 transitions. [2024-12-02 15:19:30,157 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 313 transitions. Word has length 3479 [2024-12-02 15:19:30,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:19:30,158 INFO L471 AbstractCegarLoop]: Abstraction has 245 states and 313 transitions. [2024-12-02 15:19:30,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 5.72093023255814) internal successors, (246), 43 states have internal predecessors, (246), 34 states have call successors, (42), 2 states have call predecessors, (42), 19 states have return successors, (55), 23 states have call predecessors, (55), 34 states have call successors, (55) [2024-12-02 15:19:30,158 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 313 transitions. [2024-12-02 15:19:30,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7397 [2024-12-02 15:19:30,404 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:19:30,405 INFO L218 NwaCegarLoop]: trace histogram [756, 751, 612, 379, 379, 379, 379, 376, 376, 376, 376, 376, 375, 375, 375, 374, 233, 144, 1, 1, 1, 1, 1] [2024-12-02 15:19:30,428 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-12-02 15:19:30,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-12-02 15:19:30,606 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-12-02 15:19:30,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:19:30,608 INFO L85 PathProgramCache]: Analyzing trace with hash -46182676, now seen corresponding path program 18 times [2024-12-02 15:19:30,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:19:30,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613402358] [2024-12-02 15:19:30,608 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:19:30,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:19:32,228 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 364 check-sat command(s) [2024-12-02 15:19:32,228 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:20:11,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2028264 backedges. 48834 proven. 65367 refuted. 0 times theorem prover too weak. 1914063 trivial. 0 not checked. [2024-12-02 15:20:11,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:20:11,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613402358] [2024-12-02 15:20:11,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613402358] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:20:11,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946217802] [2024-12-02 15:20:11,284 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 15:20:11,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:20:11,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:20:11,286 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:20:11,286 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-12-02 15:20:18,199 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 364 check-sat command(s) [2024-12-02 15:20:18,199 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 15:20:18,232 INFO L256 TraceCheckSpWp]: Trace formula consists of 8844 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-12-02 15:20:18,268 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:20:18,590 INFO L134 CoverageAnalysis]: Checked inductivity of 2028264 backedges. 48034 proven. 65391 refuted. 0 times theorem prover too weak. 1914839 trivial. 0 not checked. [2024-12-02 15:20:18,590 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:20:33,304 INFO L134 CoverageAnalysis]: Checked inductivity of 2028264 backedges. 48058 proven. 65644 refuted. 0 times theorem prover too weak. 1914562 trivial. 0 not checked. [2024-12-02 15:20:33,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946217802] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:20:33,304 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:20:33,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 26, 43] total 53 [2024-12-02 15:20:33,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146557289] [2024-12-02 15:20:33,305 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:20:33,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2024-12-02 15:20:33,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:20:33,309 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2024-12-02 15:20:33,310 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=430, Invalid=2326, Unknown=0, NotChecked=0, Total=2756 [2024-12-02 15:20:33,310 INFO L87 Difference]: Start difference. First operand 245 states and 313 transitions. Second operand has 53 states, 53 states have (on average 5.377358490566038) internal successors, (285), 49 states have internal predecessors, (285), 39 states have call successors, (51), 9 states have call predecessors, (51), 18 states have return successors, (57), 30 states have call predecessors, (57), 32 states have call successors, (57) [2024-12-02 15:20:35,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:20:35,404 INFO L93 Difference]: Finished difference Result 808 states and 1310 transitions. [2024-12-02 15:20:35,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 109 states. [2024-12-02 15:20:35,404 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 5.377358490566038) internal successors, (285), 49 states have internal predecessors, (285), 39 states have call successors, (51), 9 states have call predecessors, (51), 18 states have return successors, (57), 30 states have call predecessors, (57), 32 states have call successors, (57) Word has length 7396 [2024-12-02 15:20:35,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:20:35,410 INFO L225 Difference]: With dead ends: 808 [2024-12-02 15:20:35,410 INFO L226 Difference]: Without dead ends: 569 [2024-12-02 15:20:35,414 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 14943 GetRequests, 14776 SyntacticMatches, 17 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7284 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=4864, Invalid=18088, Unknown=0, NotChecked=0, Total=22952 [2024-12-02 15:20:35,414 INFO L435 NwaCegarLoop]: 43 mSDtfsCounter, 1496 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 571 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 1266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 571 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-12-02 15:20:35,414 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 312 Invalid, 1266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [571 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-12-02 15:20:35,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2024-12-02 15:20:35,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 518. [2024-12-02 15:20:35,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 426 states have (on average 1.0328638497652582) internal successors, (440), 419 states have internal predecessors, (440), 74 states have call successors, (74), 66 states have call predecessors, (74), 17 states have return successors, (283), 32 states have call predecessors, (283), 73 states have call successors, (283) [2024-12-02 15:20:35,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 797 transitions. [2024-12-02 15:20:35,445 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 797 transitions. Word has length 7396 [2024-12-02 15:20:35,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:20:35,446 INFO L471 AbstractCegarLoop]: Abstraction has 518 states and 797 transitions. [2024-12-02 15:20:35,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 5.377358490566038) internal successors, (285), 49 states have internal predecessors, (285), 39 states have call successors, (51), 9 states have call predecessors, (51), 18 states have return successors, (57), 30 states have call predecessors, (57), 32 states have call successors, (57) [2024-12-02 15:20:35,446 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 797 transitions. [2024-12-02 15:20:35,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3898 [2024-12-02 15:20:35,505 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:20:35,505 INFO L218 NwaCegarLoop]: trace histogram [398, 396, 322, 199, 199, 199, 199, 198, 198, 198, 198, 198, 198, 198, 198, 197, 123, 76, 1, 1, 1, 1, 1] [2024-12-02 15:20:35,530 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-12-02 15:20:35,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-12-02 15:20:35,706 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-12-02 15:20:35,707 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:20:35,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1853873146, now seen corresponding path program 19 times [2024-12-02 15:20:35,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:20:35,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961426847] [2024-12-02 15:20:35,708 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:20:35,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:20:36,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:20:59,113 INFO L134 CoverageAnalysis]: Checked inductivity of 561731 backedges. 23451 proven. 36223 refuted. 0 times theorem prover too weak. 502057 trivial. 0 not checked. [2024-12-02 15:20:59,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 15:20:59,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961426847] [2024-12-02 15:20:59,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961426847] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 15:20:59,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402647471] [2024-12-02 15:20:59,113 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 15:20:59,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 15:20:59,113 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 15:20:59,115 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 15:20:59,116 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-12-02 15:21:00,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 15:21:01,015 INFO L256 TraceCheckSpWp]: Trace formula consists of 7217 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-12-02 15:21:01,034 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 15:21:01,345 INFO L134 CoverageAnalysis]: Checked inductivity of 561731 backedges. 25749 proven. 38497 refuted. 0 times theorem prover too weak. 497485 trivial. 0 not checked. [2024-12-02 15:21:01,345 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 15:21:13,890 INFO L134 CoverageAnalysis]: Checked inductivity of 561731 backedges. 25749 proven. 38888 refuted. 0 times theorem prover too weak. 497094 trivial. 0 not checked. [2024-12-02 15:21:13,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402647471] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 15:21:13,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 15:21:13,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25, 43] total 48 [2024-12-02 15:21:13,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713752158] [2024-12-02 15:21:13,891 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 15:21:13,893 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-12-02 15:21:13,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 15:21:13,893 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-12-02 15:21:13,894 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=363, Invalid=1893, Unknown=0, NotChecked=0, Total=2256 [2024-12-02 15:21:13,894 INFO L87 Difference]: Start difference. First operand 518 states and 797 transitions. Second operand has 48 states, 48 states have (on average 5.625) internal successors, (270), 48 states have internal predecessors, (270), 41 states have call successors, (45), 1 states have call predecessors, (45), 21 states have return successors, (62), 23 states have call predecessors, (62), 41 states have call successors, (62) [2024-12-02 15:21:14,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 15:21:14,657 INFO L93 Difference]: Finished difference Result 1126 states and 1832 transitions. [2024-12-02 15:21:14,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-12-02 15:21:14,658 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 5.625) internal successors, (270), 48 states have internal predecessors, (270), 41 states have call successors, (45), 1 states have call predecessors, (45), 21 states have return successors, (62), 23 states have call predecessors, (62), 41 states have call successors, (62) Word has length 3897 [2024-12-02 15:21:14,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 15:21:14,663 INFO L225 Difference]: With dead ends: 1126 [2024-12-02 15:21:14,663 INFO L226 Difference]: Without dead ends: 614 [2024-12-02 15:21:14,666 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7864 GetRequests, 7767 SyntacticMatches, 21 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1874 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1450, Invalid=4556, Unknown=0, NotChecked=0, Total=6006 [2024-12-02 15:21:14,666 INFO L435 NwaCegarLoop]: 84 mSDtfsCounter, 502 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 502 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 1303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 15:21:14,666 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [502 Valid, 466 Invalid, 1303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [218 Valid, 1085 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 15:21:14,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2024-12-02 15:21:14,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 494. [2024-12-02 15:21:14,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 405 states have (on average 1.0271604938271606) internal successors, (416), 400 states have internal predecessors, (416), 71 states have call successors, (71), 62 states have call predecessors, (71), 17 states have return successors, (275), 31 states have call predecessors, (275), 70 states have call successors, (275) [2024-12-02 15:21:14,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 762 transitions. [2024-12-02 15:21:14,697 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 762 transitions. Word has length 3897 [2024-12-02 15:21:14,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 15:21:14,698 INFO L471 AbstractCegarLoop]: Abstraction has 494 states and 762 transitions. [2024-12-02 15:21:14,698 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 5.625) internal successors, (270), 48 states have internal predecessors, (270), 41 states have call successors, (45), 1 states have call predecessors, (45), 21 states have return successors, (62), 23 states have call predecessors, (62), 41 states have call successors, (62) [2024-12-02 15:21:14,698 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 762 transitions. [2024-12-02 15:21:14,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4565 [2024-12-02 15:21:14,776 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 15:21:14,776 INFO L218 NwaCegarLoop]: trace histogram [466, 464, 377, 233, 233, 233, 233, 232, 232, 232, 232, 232, 232, 232, 232, 231, 144, 89, 1, 1, 1, 1, 1] [2024-12-02 15:21:14,800 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-12-02 15:21:14,977 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_700a3bad-1d74-47ce-9a11-db1b32d28c10/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-12-02 15:21:14,977 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting fibonacciErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fibonacciErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fibonacciErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2024-12-02 15:21:14,977 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 15:21:14,978 INFO L85 PathProgramCache]: Analyzing trace with hash 2119290130, now seen corresponding path program 20 times [2024-12-02 15:21:14,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 15:21:14,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642222229] [2024-12-02 15:21:14,978 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 15:21:14,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 15:21:15,837 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 15:21:15,837 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat