./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursified_nla-digbench/recursified_cohencu-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursified_nla-digbench/recursified_cohencu-ll.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 260777f6a7be1f16cc330a008300c11ebdea8f1cf9d8e96a0325274fd8fd5b2a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:00:58,892 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:00:58,952 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-28 04:00:58,958 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:00:58,958 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:00:58,982 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:00:58,983 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:00:58,983 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:00:58,983 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:00:58,983 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:00:58,984 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:00:58,984 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:00:58,984 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:00:58,984 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:00:58,984 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:00:58,985 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:00:58,985 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:00:58,985 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:00:58,985 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:00:58,985 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:00:58,985 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:00:58,986 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:00:58,986 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:00:58,986 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:00:58,986 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-28 04:00:58,986 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-28 04:00:58,986 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:00:58,986 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:00:58,987 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:00:58,987 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:00:58,987 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:00:58,988 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:00:58,988 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:00:58,988 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:00:58,988 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:00:58,988 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:00:58,988 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:00:58,989 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:00:58,989 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:00:58,989 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:00:58,989 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:00:58,989 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:00:58,989 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:00:58,989 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:00:58,989 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:00:58,990 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:00:58,990 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:00:58,990 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:00:58,990 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:00:58,990 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:00:58,991 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_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 260777f6a7be1f16cc330a008300c11ebdea8f1cf9d8e96a0325274fd8fd5b2a [2024-11-28 04:00:59,284 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:00:59,298 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:00:59,302 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:00:59,303 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:00:59,303 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:00:59,304 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/recursified_nla-digbench/recursified_cohencu-ll.c [2024-11-28 04:01:02,163 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/data/ffeb58d7b/3bfed63d27204bc6ae3adcd58d9fbd73/FLAG571855bc6 [2024-11-28 04:01:02,445 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:01:02,450 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/sv-benchmarks/c/recursified_nla-digbench/recursified_cohencu-ll.c [2024-11-28 04:01:02,478 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/data/ffeb58d7b/3bfed63d27204bc6ae3adcd58d9fbd73/FLAG571855bc6 [2024-11-28 04:01:02,502 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/data/ffeb58d7b/3bfed63d27204bc6ae3adcd58d9fbd73 [2024-11-28 04:01:02,505 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:01:02,507 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:01:02,509 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:01:02,510 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:01:02,515 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:01:02,516 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:01:02" (1/1) ... [2024-11-28 04:01:02,519 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@744b2308 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:02, skipping insertion in model container [2024-11-28 04:01:02,519 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:01:02" (1/1) ... [2024-11-28 04:01:02,538 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:01:02,732 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:01:02,742 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:01:02,787 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:01:02,805 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:01:02,806 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:02 WrapperNode [2024-11-28 04:01:02,807 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:01:02,809 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:01:02,809 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:01:02,809 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:01:02,817 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:02" (1/1) ... [2024-11-28 04:01:02,830 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:02" (1/1) ... [2024-11-28 04:01:02,874 INFO L138 Inliner]: procedures = 16, calls = 100, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 196 [2024-11-28 04:01:02,878 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:01:02,879 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:01:02,879 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:01:02,879 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:01:02,889 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:02" (1/1) ... [2024-11-28 04:01:02,889 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:02" (1/1) ... [2024-11-28 04:01:02,894 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:02" (1/1) ... [2024-11-28 04:01:02,915 INFO L175 MemorySlicer]: Split 66 memory accesses to 6 slices as follows [2, 12, 11, 21, 15, 5]. 32 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0]. The 9 writes are split as follows [0, 2, 2, 2, 2, 1]. [2024-11-28 04:01:02,923 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:02" (1/1) ... [2024-11-28 04:01:02,923 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:02" (1/1) ... [2024-11-28 04:01:02,934 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:02" (1/1) ... [2024-11-28 04:01:02,935 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:02" (1/1) ... [2024-11-28 04:01:02,941 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:02" (1/1) ... [2024-11-28 04:01:02,942 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:02" (1/1) ... [2024-11-28 04:01:02,947 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:02" (1/1) ... [2024-11-28 04:01:02,953 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:01:02,954 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:01:02,954 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:01:02,954 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:01:02,955 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:02" (1/1) ... [2024-11-28 04:01:02,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:01:02,974 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:01:02,990 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:01:02,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:01:03,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:01:03,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:01:03,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:01:03,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 04:01:03,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 04:01:03,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 04:01:03,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-28 04:01:03,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 04:01:03,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 04:01:03,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 04:01:03,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 04:01:03,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 04:01:03,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-28 04:01:03,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-28 04:01:03,025 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_29_to_41_0 [2024-11-28 04:01:03,025 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_29_to_41_0 [2024-11-28 04:01:03,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:01:03,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:01:03,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 04:01:03,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 04:01:03,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 04:01:03,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 04:01:03,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-28 04:01:03,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-28 04:01:03,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 04:01:03,025 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 04:01:03,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 04:01:03,163 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:01:03,165 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:01:04,088 INFO L? ?]: Removed 357 outVars from TransFormulas that were not future-live. [2024-11-28 04:01:04,088 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:01:04,113 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:01:04,113 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-28 04:01:04,114 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:01:04 BoogieIcfgContainer [2024-11-28 04:01:04,114 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:01:04,119 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:01:04,119 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:01:04,126 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:01:04,126 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:01:02" (1/3) ... [2024-11-28 04:01:04,126 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34384cff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:01:04, skipping insertion in model container [2024-11-28 04:01:04,126 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:01:02" (2/3) ... [2024-11-28 04:01:04,127 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34384cff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:01:04, skipping insertion in model container [2024-11-28 04:01:04,127 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:01:04" (3/3) ... [2024-11-28 04:01:04,128 INFO L128 eAbstractionObserver]: Analyzing ICFG recursified_cohencu-ll.c [2024-11-28 04:01:04,144 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:01:04,145 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG recursified_cohencu-ll.c that has 3 procedures, 317 locations, 1 initial locations, 0 loop locations, and 138 error locations. [2024-11-28 04:01:04,218 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:01:04,231 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;@7921c0d3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:01:04,231 INFO L334 AbstractCegarLoop]: Starting to check reachability of 138 error locations. [2024-11-28 04:01:04,235 INFO L276 IsEmpty]: Start isEmpty. Operand has 317 states, 163 states have (on average 1.8650306748466257) internal successors, (304), 302 states have internal predecessors, (304), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-28 04:01:04,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-28 04:01:04,241 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:01:04,241 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-28 04:01:04,242 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_29_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-28 04:01:04,246 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:04,247 INFO L85 PathProgramCache]: Analyzing trace with hash 476001869, now seen corresponding path program 1 times [2024-11-28 04:01:04,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:04,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254384634] [2024-11-28 04:01:04,255 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:04,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:04,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:04,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:01:04,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:04,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254384634] [2024-11-28 04:01:04,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254384634] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:01:04,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:01:04,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:01:04,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110983973] [2024-11-28 04:01:04,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:01:04,863 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:01:04,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:04,901 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:01:04,902 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:01:04,905 INFO L87 Difference]: Start difference. First operand has 317 states, 163 states have (on average 1.8650306748466257) internal successors, (304), 302 states have internal predecessors, (304), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:05,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:01:05,254 INFO L93 Difference]: Finished difference Result 738 states and 792 transitions. [2024-11-28 04:01:05,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:01:05,256 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-28 04:01:05,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:01:05,271 INFO L225 Difference]: With dead ends: 738 [2024-11-28 04:01:05,273 INFO L226 Difference]: Without dead ends: 418 [2024-11-28 04:01:05,281 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:01:05,286 INFO L435 NwaCegarLoop]: 311 mSDtfsCounter, 205 mSDsluCounter, 1219 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 1530 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:01:05,287 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 1530 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:01:05,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2024-11-28 04:01:05,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 371. [2024-11-28 04:01:05,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 213 states have (on average 1.8497652582159625) internal successors, (394), 351 states have internal predecessors, (394), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2024-11-28 04:01:05,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 429 transitions. [2024-11-28 04:01:05,377 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 429 transitions. Word has length 6 [2024-11-28 04:01:05,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:01:05,378 INFO L471 AbstractCegarLoop]: Abstraction has 371 states and 429 transitions. [2024-11-28 04:01:05,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:01:05,379 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 429 transitions. [2024-11-28 04:01:05,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-28 04:01:05,381 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:01:05,381 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:05,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:01:05,381 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_29_to_41_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-28 04:01:05,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:05,382 INFO L85 PathProgramCache]: Analyzing trace with hash 13280284, now seen corresponding path program 1 times [2024-11-28 04:01:05,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:05,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439447242] [2024-11-28 04:01:05,382 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:05,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:05,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:05,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:01:05,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:05,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439447242] [2024-11-28 04:01:05,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439447242] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:01:05,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:01:05,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:01:05,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846277772] [2024-11-28 04:01:05,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:01:05,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:01:05,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:05,736 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:01:05,736 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:01:05,737 INFO L87 Difference]: Start difference. First operand 371 states and 429 transitions. Second operand has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:01:05,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:01:05,981 INFO L93 Difference]: Finished difference Result 418 states and 434 transitions. [2024-11-28 04:01:05,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:01:05,982 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2024-11-28 04:01:05,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:01:05,984 INFO L225 Difference]: With dead ends: 418 [2024-11-28 04:01:05,984 INFO L226 Difference]: Without dead ends: 414 [2024-11-28 04:01:05,985 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:01:05,988 INFO L435 NwaCegarLoop]: 298 mSDtfsCounter, 200 mSDsluCounter, 1181 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 1479 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:01:05,988 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 1479 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:01:05,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2024-11-28 04:01:06,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 371. [2024-11-28 04:01:06,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 213 states have (on average 1.8309859154929577) internal successors, (390), 351 states have internal predecessors, (390), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2024-11-28 04:01:06,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 425 transitions. [2024-11-28 04:01:06,031 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 425 transitions. Word has length 16 [2024-11-28 04:01:06,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:01:06,032 INFO L471 AbstractCegarLoop]: Abstraction has 371 states and 425 transitions. [2024-11-28 04:01:06,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:01:06,032 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 425 transitions. [2024-11-28 04:01:06,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-28 04:01:06,032 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:01:06,033 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:06,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:01:06,034 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_29_to_41_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-28 04:01:06,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:06,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1803988512, now seen corresponding path program 1 times [2024-11-28 04:01:06,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:06,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774066362] [2024-11-28 04:01:06,038 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:06,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:06,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:06,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:01:06,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:06,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774066362] [2024-11-28 04:01:06,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774066362] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:01:06,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:01:06,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:01:06,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060400435] [2024-11-28 04:01:06,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:01:06,357 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:01:06,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:06,358 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:01:06,358 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:01:06,358 INFO L87 Difference]: Start difference. First operand 371 states and 425 transitions. Second operand has 6 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:01:06,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:01:06,601 INFO L93 Difference]: Finished difference Result 414 states and 430 transitions. [2024-11-28 04:01:06,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:01:06,602 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2024-11-28 04:01:06,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:01:06,605 INFO L225 Difference]: With dead ends: 414 [2024-11-28 04:01:06,606 INFO L226 Difference]: Without dead ends: 412 [2024-11-28 04:01:06,606 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:01:06,607 INFO L435 NwaCegarLoop]: 298 mSDtfsCounter, 186 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 1481 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:01:06,608 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 1481 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:01:06,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2024-11-28 04:01:06,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 371. [2024-11-28 04:01:06,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 213 states have (on average 1.8215962441314555) internal successors, (388), 351 states have internal predecessors, (388), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2024-11-28 04:01:06,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 423 transitions. [2024-11-28 04:01:06,640 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 423 transitions. Word has length 20 [2024-11-28 04:01:06,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:01:06,640 INFO L471 AbstractCegarLoop]: Abstraction has 371 states and 423 transitions. [2024-11-28 04:01:06,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 4.25) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:01:06,641 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 423 transitions. [2024-11-28 04:01:06,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-28 04:01:06,641 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:01:06,641 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:06,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:01:06,641 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_29_to_41_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-28 04:01:06,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:06,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1533829314, now seen corresponding path program 1 times [2024-11-28 04:01:06,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:06,644 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777895361] [2024-11-28 04:01:06,644 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:06,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:06,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:06,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:01:06,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:06,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777895361] [2024-11-28 04:01:06,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777895361] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:01:06,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:01:06,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:01:06,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779086547] [2024-11-28 04:01:06,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:01:06,957 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:01:06,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:06,957 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:01:06,957 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:01:06,958 INFO L87 Difference]: Start difference. First operand 371 states and 423 transitions. Second operand has 7 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:01:07,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:01:07,234 INFO L93 Difference]: Finished difference Result 412 states and 428 transitions. [2024-11-28 04:01:07,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:01:07,235 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2024-11-28 04:01:07,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:01:07,237 INFO L225 Difference]: With dead ends: 412 [2024-11-28 04:01:07,237 INFO L226 Difference]: Without dead ends: 410 [2024-11-28 04:01:07,237 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:01:07,240 INFO L435 NwaCegarLoop]: 298 mSDtfsCounter, 188 mSDsluCounter, 1251 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 1549 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:01:07,241 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 1549 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:01:07,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2024-11-28 04:01:07,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 371. [2024-11-28 04:01:07,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 213 states have (on average 1.812206572769953) internal successors, (386), 351 states have internal predecessors, (386), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2024-11-28 04:01:07,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 421 transitions. [2024-11-28 04:01:07,259 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 421 transitions. Word has length 22 [2024-11-28 04:01:07,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:01:07,260 INFO L471 AbstractCegarLoop]: Abstraction has 371 states and 421 transitions. [2024-11-28 04:01:07,260 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:01:07,260 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 421 transitions. [2024-11-28 04:01:07,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-28 04:01:07,261 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:01:07,261 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:07,261 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:01:07,261 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_29_to_41_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-28 04:01:07,261 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:07,262 INFO L85 PathProgramCache]: Analyzing trace with hash 304068537, now seen corresponding path program 1 times [2024-11-28 04:01:07,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:07,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057365355] [2024-11-28 04:01:07,262 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:07,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:07,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:07,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:01:07,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:07,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057365355] [2024-11-28 04:01:07,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057365355] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:01:07,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:01:07,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:01:07,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958294655] [2024-11-28 04:01:07,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:01:07,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:01:07,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:07,563 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:01:07,563 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:01:07,563 INFO L87 Difference]: Start difference. First operand 371 states and 421 transitions. Second operand has 6 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:01:07,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:01:07,777 INFO L93 Difference]: Finished difference Result 410 states and 426 transitions. [2024-11-28 04:01:07,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:01:07,778 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2024-11-28 04:01:07,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:01:07,780 INFO L225 Difference]: With dead ends: 410 [2024-11-28 04:01:07,780 INFO L226 Difference]: Without dead ends: 408 [2024-11-28 04:01:07,780 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:01:07,781 INFO L435 NwaCegarLoop]: 302 mSDtfsCounter, 175 mSDsluCounter, 1181 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 1483 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:01:07,781 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 1483 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:01:07,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2024-11-28 04:01:07,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 371. [2024-11-28 04:01:07,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 213 states have (on average 1.8028169014084507) internal successors, (384), 351 states have internal predecessors, (384), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2024-11-28 04:01:07,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 419 transitions. [2024-11-28 04:01:07,795 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 419 transitions. Word has length 23 [2024-11-28 04:01:07,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:01:07,795 INFO L471 AbstractCegarLoop]: Abstraction has 371 states and 419 transitions. [2024-11-28 04:01:07,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:01:07,795 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 419 transitions. [2024-11-28 04:01:07,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-28 04:01:07,796 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:01:07,796 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:07,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:01:07,796 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_29_to_41_0Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-28 04:01:07,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:07,797 INFO L85 PathProgramCache]: Analyzing trace with hash 952671999, now seen corresponding path program 1 times [2024-11-28 04:01:07,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:07,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107332738] [2024-11-28 04:01:07,797 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:07,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:07,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:01:07,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1783423407] [2024-11-28 04:01:07,832 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:07,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:01:07,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:01:07,836 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:01:07,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:01:07,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:07,953 INFO L256 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-28 04:01:07,961 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:01:08,004 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:01:08,223 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:01:08,223 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:01:08,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:08,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107332738] [2024-11-28 04:01:08,224 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:01:08,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783423407] [2024-11-28 04:01:08,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783423407] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:01:08,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:01:08,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:01:08,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236308837] [2024-11-28 04:01:08,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:01:08,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:01:08,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:08,225 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:01:08,225 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:01:08,225 INFO L87 Difference]: Start difference. First operand 371 states and 419 transitions. Second operand has 7 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:01:08,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:01:08,494 INFO L93 Difference]: Finished difference Result 590 states and 609 transitions. [2024-11-28 04:01:08,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:01:08,495 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 32 [2024-11-28 04:01:08,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:01:08,499 INFO L225 Difference]: With dead ends: 590 [2024-11-28 04:01:08,499 INFO L226 Difference]: Without dead ends: 586 [2024-11-28 04:01:08,500 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:01:08,501 INFO L435 NwaCegarLoop]: 300 mSDtfsCounter, 344 mSDsluCounter, 1468 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 1768 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:01:08,501 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 1768 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:01:08,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2024-11-28 04:01:08,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 453. [2024-11-28 04:01:08,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 289 states have (on average 1.8131487889273357) internal successors, (524), 427 states have internal predecessors, (524), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (23), 22 states have call predecessors, (23), 22 states have call successors, (23) [2024-11-28 04:01:08,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 569 transitions. [2024-11-28 04:01:08,535 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 569 transitions. Word has length 32 [2024-11-28 04:01:08,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:01:08,535 INFO L471 AbstractCegarLoop]: Abstraction has 453 states and 569 transitions. [2024-11-28 04:01:08,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:01:08,536 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 569 transitions. [2024-11-28 04:01:08,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-28 04:01:08,538 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:01:08,538 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:08,548 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 04:01:08,739 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:01:08,740 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_29_to_41_0Err18ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-28 04:01:08,740 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:08,741 INFO L85 PathProgramCache]: Analyzing trace with hash -1089407434, now seen corresponding path program 1 times [2024-11-28 04:01:08,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:08,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779797298] [2024-11-28 04:01:08,742 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:08,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:08,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:01:08,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1306449276] [2024-11-28 04:01:08,775 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:08,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:01:08,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:01:08,780 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:01:08,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:01:08,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:08,892 INFO L256 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 35 conjuncts are in the unsatisfiable core [2024-11-28 04:01:08,895 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:01:08,918 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 04:01:08,921 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:01:09,586 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 04:01:09,602 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:01:09,603 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2024-11-28 04:01:09,635 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:01:09,635 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:01:09,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:09,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779797298] [2024-11-28 04:01:09,753 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:01:09,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306449276] [2024-11-28 04:01:09,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306449276] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:01:09,753 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:01:09,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2024-11-28 04:01:09,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847614921] [2024-11-28 04:01:09,753 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 04:01:09,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 04:01:09,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:09,754 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 04:01:09,754 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-11-28 04:01:09,755 INFO L87 Difference]: Start difference. First operand 453 states and 569 transitions. Second operand has 12 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 04:01:14,601 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:01:18,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:01:22,958 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:01:26,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:01:30,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:01:34,972 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:01:38,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:01:42,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:01:43,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:01:43,093 INFO L93 Difference]: Finished difference Result 594 states and 613 transitions. [2024-11-28 04:01:43,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 04:01:43,093 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 42 [2024-11-28 04:01:43,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:01:43,096 INFO L225 Difference]: With dead ends: 594 [2024-11-28 04:01:43,096 INFO L226 Difference]: Without dead ends: 593 [2024-11-28 04:01:43,097 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 29 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2024-11-28 04:01:43,097 INFO L435 NwaCegarLoop]: 253 mSDtfsCounter, 449 mSDsluCounter, 2613 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 21 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 454 SdHoareTripleChecker+Valid, 2866 SdHoareTripleChecker+Invalid, 671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.9s IncrementalHoareTripleChecker+Time [2024-11-28 04:01:43,098 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [454 Valid, 2866 Invalid, 671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 642 Invalid, 8 Unknown, 0 Unchecked, 32.9s Time] [2024-11-28 04:01:43,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2024-11-28 04:01:43,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 453. [2024-11-28 04:01:43,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 289 states have (on average 1.8096885813148789) internal successors, (523), 427 states have internal predecessors, (523), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (23), 22 states have call predecessors, (23), 22 states have call successors, (23) [2024-11-28 04:01:43,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 568 transitions. [2024-11-28 04:01:43,119 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 568 transitions. Word has length 42 [2024-11-28 04:01:43,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:01:43,119 INFO L471 AbstractCegarLoop]: Abstraction has 453 states and 568 transitions. [2024-11-28 04:01:43,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.2) internal successors, (32), 10 states have internal predecessors, (32), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-28 04:01:43,120 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 568 transitions. [2024-11-28 04:01:43,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-28 04:01:43,121 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:01:43,121 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:43,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 04:01:43,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-28 04:01:43,325 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_29_to_41_0Err19ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-28 04:01:43,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:43,326 INFO L85 PathProgramCache]: Analyzing trace with hash 588107993, now seen corresponding path program 1 times [2024-11-28 04:01:43,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:43,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194892285] [2024-11-28 04:01:43,326 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:43,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:43,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:01:43,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [999224194] [2024-11-28 04:01:43,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:43,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:01:43,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:01:43,375 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:01:43,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:01:43,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:43,493 INFO L256 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-28 04:01:43,496 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:01:43,504 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:01:43,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:01:44,016 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 04:01:44,016 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:01:45,577 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 04:01:45,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:45,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194892285] [2024-11-28 04:01:45,578 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:01:45,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999224194] [2024-11-28 04:01:45,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999224194] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:01:45,578 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:01:45,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2024-11-28 04:01:45,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034195743] [2024-11-28 04:01:45,578 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:01:45,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 04:01:45,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:45,579 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 04:01:45,580 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2024-11-28 04:01:45,580 INFO L87 Difference]: Start difference. First operand 453 states and 568 transitions. Second operand has 18 states, 15 states have (on average 4.333333333333333) internal successors, (65), 16 states have internal predecessors, (65), 7 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-28 04:01:48,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:01:48,609 INFO L93 Difference]: Finished difference Result 593 states and 612 transitions. [2024-11-28 04:01:48,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 04:01:48,609 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 4.333333333333333) internal successors, (65), 16 states have internal predecessors, (65), 7 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) Word has length 43 [2024-11-28 04:01:48,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:01:48,613 INFO L225 Difference]: With dead ends: 593 [2024-11-28 04:01:48,613 INFO L226 Difference]: Without dead ends: 592 [2024-11-28 04:01:48,614 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 63 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=87, Invalid=333, Unknown=0, NotChecked=0, Total=420 [2024-11-28 04:01:48,614 INFO L435 NwaCegarLoop]: 264 mSDtfsCounter, 531 mSDsluCounter, 3219 mSDsCounter, 0 mSdLazyCounter, 905 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 537 SdHoareTripleChecker+Valid, 3483 SdHoareTripleChecker+Invalid, 929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:01:48,615 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [537 Valid, 3483 Invalid, 929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 905 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-28 04:01:48,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2024-11-28 04:01:48,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 453. [2024-11-28 04:01:48,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 289 states have (on average 1.806228373702422) internal successors, (522), 427 states have internal predecessors, (522), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (23), 22 states have call predecessors, (23), 22 states have call successors, (23) [2024-11-28 04:01:48,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 567 transitions. [2024-11-28 04:01:48,641 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 567 transitions. Word has length 43 [2024-11-28 04:01:48,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:01:48,641 INFO L471 AbstractCegarLoop]: Abstraction has 453 states and 567 transitions. [2024-11-28 04:01:48,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 4.333333333333333) internal successors, (65), 16 states have internal predecessors, (65), 7 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 3 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-28 04:01:48,642 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 567 transitions. [2024-11-28 04:01:48,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-28 04:01:48,643 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:01:48,643 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:48,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 04:01:48,843 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-28 04:01:48,844 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_29_to_41_0Err20ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-28 04:01:48,844 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:48,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1051478680, now seen corresponding path program 1 times [2024-11-28 04:01:48,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:48,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634346220] [2024-11-28 04:01:48,844 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:48,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:48,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:49,180 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 04:01:49,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:49,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634346220] [2024-11-28 04:01:49,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634346220] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:01:49,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:01:49,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:01:49,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082762695] [2024-11-28 04:01:49,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:01:49,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:01:49,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:49,182 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:01:49,182 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:01:49,183 INFO L87 Difference]: Start difference. First operand 453 states and 567 transitions. Second operand has 6 states, 4 states have (on average 7.75) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 04:01:49,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:01:49,425 INFO L93 Difference]: Finished difference Result 560 states and 580 transitions. [2024-11-28 04:01:49,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:01:49,425 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 7.75) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 44 [2024-11-28 04:01:49,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:01:49,428 INFO L225 Difference]: With dead ends: 560 [2024-11-28 04:01:49,428 INFO L226 Difference]: Without dead ends: 558 [2024-11-28 04:01:49,428 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:01:49,429 INFO L435 NwaCegarLoop]: 290 mSDtfsCounter, 313 mSDsluCounter, 1141 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 1431 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:01:49,429 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 1431 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:01:49,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2024-11-28 04:01:49,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 453. [2024-11-28 04:01:49,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 289 states have (on average 1.7993079584775087) internal successors, (520), 427 states have internal predecessors, (520), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (23), 22 states have call predecessors, (23), 22 states have call successors, (23) [2024-11-28 04:01:49,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 565 transitions. [2024-11-28 04:01:49,450 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 565 transitions. Word has length 44 [2024-11-28 04:01:49,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:01:49,450 INFO L471 AbstractCegarLoop]: Abstraction has 453 states and 565 transitions. [2024-11-28 04:01:49,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 7.75) internal successors, (31), 5 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 04:01:49,451 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 565 transitions. [2024-11-28 04:01:49,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-28 04:01:49,451 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:01:49,451 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:49,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 04:01:49,452 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_29_to_41_0Err22ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-28 04:01:49,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:49,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1153699578, now seen corresponding path program 1 times [2024-11-28 04:01:49,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:49,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628802084] [2024-11-28 04:01:49,453 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:49,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:49,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:49,721 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 04:01:49,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:49,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628802084] [2024-11-28 04:01:49,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628802084] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:01:49,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:01:49,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:01:49,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073206337] [2024-11-28 04:01:49,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:01:49,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:01:49,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:49,723 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:01:49,723 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:01:49,725 INFO L87 Difference]: Start difference. First operand 453 states and 565 transitions. Second operand has 7 states, 5 states have (on average 6.6) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 04:01:50,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:01:50,073 INFO L93 Difference]: Finished difference Result 558 states and 578 transitions. [2024-11-28 04:01:50,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:01:50,073 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 6.6) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 46 [2024-11-28 04:01:50,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:01:50,076 INFO L225 Difference]: With dead ends: 558 [2024-11-28 04:01:50,076 INFO L226 Difference]: Without dead ends: 557 [2024-11-28 04:01:50,076 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:01:50,077 INFO L435 NwaCegarLoop]: 291 mSDtfsCounter, 309 mSDsluCounter, 1404 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 1695 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:01:50,078 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 1695 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:01:50,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2024-11-28 04:01:50,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 453. [2024-11-28 04:01:50,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 289 states have (on average 1.7958477508650519) internal successors, (519), 427 states have internal predecessors, (519), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (23), 22 states have call predecessors, (23), 22 states have call successors, (23) [2024-11-28 04:01:50,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 564 transitions. [2024-11-28 04:01:50,118 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 564 transitions. Word has length 46 [2024-11-28 04:01:50,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:01:50,119 INFO L471 AbstractCegarLoop]: Abstraction has 453 states and 564 transitions. [2024-11-28 04:01:50,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 6.6) internal successors, (33), 6 states have internal predecessors, (33), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 04:01:50,119 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 564 transitions. [2024-11-28 04:01:50,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-28 04:01:50,120 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:01:50,120 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:50,120 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 04:01:50,120 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_29_to_41_0Err23ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-28 04:01:50,121 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:50,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1404948637, now seen corresponding path program 1 times [2024-11-28 04:01:50,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:50,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406562933] [2024-11-28 04:01:50,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:50,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:50,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:50,360 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 04:01:50,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:50,361 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406562933] [2024-11-28 04:01:50,361 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406562933] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:01:50,361 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:01:50,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:01:50,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984039327] [2024-11-28 04:01:50,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:01:50,362 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:01:50,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:50,363 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:01:50,363 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:01:50,363 INFO L87 Difference]: Start difference. First operand 453 states and 564 transitions. Second operand has 6 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 04:01:50,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:01:50,792 INFO L93 Difference]: Finished difference Result 557 states and 577 transitions. [2024-11-28 04:01:50,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:01:50,792 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 47 [2024-11-28 04:01:50,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:01:50,794 INFO L225 Difference]: With dead ends: 557 [2024-11-28 04:01:50,795 INFO L226 Difference]: Without dead ends: 556 [2024-11-28 04:01:50,795 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:01:50,796 INFO L435 NwaCegarLoop]: 292 mSDtfsCounter, 306 mSDsluCounter, 1139 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 1431 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:01:50,796 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 1431 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:01:50,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2024-11-28 04:01:50,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 453. [2024-11-28 04:01:50,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 289 states have (on average 1.792387543252595) internal successors, (518), 427 states have internal predecessors, (518), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (23), 22 states have call predecessors, (23), 22 states have call successors, (23) [2024-11-28 04:01:50,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 563 transitions. [2024-11-28 04:01:50,815 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 563 transitions. Word has length 47 [2024-11-28 04:01:50,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:01:50,815 INFO L471 AbstractCegarLoop]: Abstraction has 453 states and 563 transitions. [2024-11-28 04:01:50,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 04:01:50,816 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 563 transitions. [2024-11-28 04:01:50,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-28 04:01:50,816 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:01:50,816 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:50,816 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 04:01:50,817 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_29_to_41_0Err24ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-28 04:01:50,817 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:50,817 INFO L85 PathProgramCache]: Analyzing trace with hash 603734876, now seen corresponding path program 1 times [2024-11-28 04:01:50,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:50,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014359765] [2024-11-28 04:01:50,817 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:50,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:50,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:51,000 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 04:01:51,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:51,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014359765] [2024-11-28 04:01:51,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014359765] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:01:51,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:01:51,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:01:51,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118056885] [2024-11-28 04:01:51,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:01:51,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:01:51,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:51,001 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:01:51,001 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:01:51,002 INFO L87 Difference]: Start difference. First operand 453 states and 563 transitions. Second operand has 6 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 04:01:51,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:01:51,245 INFO L93 Difference]: Finished difference Result 568 states and 588 transitions. [2024-11-28 04:01:51,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:01:51,245 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 48 [2024-11-28 04:01:51,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:01:51,247 INFO L225 Difference]: With dead ends: 568 [2024-11-28 04:01:51,247 INFO L226 Difference]: Without dead ends: 566 [2024-11-28 04:01:51,248 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:01:51,248 INFO L435 NwaCegarLoop]: 290 mSDtfsCounter, 311 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:01:51,249 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 1423 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:01:51,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2024-11-28 04:01:51,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 453. [2024-11-28 04:01:51,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 289 states have (on average 1.7854671280276817) internal successors, (516), 427 states have internal predecessors, (516), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (23), 22 states have call predecessors, (23), 22 states have call successors, (23) [2024-11-28 04:01:51,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 561 transitions. [2024-11-28 04:01:51,267 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 561 transitions. Word has length 48 [2024-11-28 04:01:51,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:01:51,267 INFO L471 AbstractCegarLoop]: Abstraction has 453 states and 561 transitions. [2024-11-28 04:01:51,267 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 8.75) internal successors, (35), 5 states have internal predecessors, (35), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 04:01:51,268 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 561 transitions. [2024-11-28 04:01:51,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-28 04:01:51,268 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:01:51,268 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:01:51,268 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 04:01:51,268 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting func_to_recursive_line_29_to_41_0Err26ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-28 04:01:51,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:01:51,269 INFO L85 PathProgramCache]: Analyzing trace with hash 368633790, now seen corresponding path program 1 times [2024-11-28 04:01:51,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:01:51,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432454119] [2024-11-28 04:01:51,269 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:51,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:01:51,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:01:51,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1385083072] [2024-11-28 04:01:51,293 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:01:51,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:01:51,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:01:51,295 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:01:51,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:01:51,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:01:51,411 INFO L256 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-28 04:01:51,415 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:01:51,420 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:01:51,425 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:01:51,431 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:01:52,393 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 04:01:52,393 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:01:52,860 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 30 [2024-11-28 04:01:52,999 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 04:01:52,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:01:52,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432454119] [2024-11-28 04:01:52,999 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:01:53,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1385083072] [2024-11-28 04:01:53,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1385083072] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:01:53,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:01:53,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 23 [2024-11-28 04:01:53,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581639927] [2024-11-28 04:01:53,000 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:01:53,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-28 04:01:53,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:01:53,001 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-28 04:01:53,002 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2024-11-28 04:01:53,002 INFO L87 Difference]: Start difference. First operand 453 states and 561 transitions. Second operand has 24 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 6 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-28 04:01:59,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2024-11-28 04:02:01,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:02:01,547 INFO L93 Difference]: Finished difference Result 582 states and 601 transitions. [2024-11-28 04:02:01,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 04:02:01,547 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 6 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) Word has length 50 [2024-11-28 04:02:01,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:02:01,550 INFO L225 Difference]: With dead ends: 582 [2024-11-28 04:02:01,550 INFO L226 Difference]: Without dead ends: 581 [2024-11-28 04:02:01,550 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 73 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=202, Invalid=988, Unknown=0, NotChecked=0, Total=1190 [2024-11-28 04:02:01,551 INFO L435 NwaCegarLoop]: 249 mSDtfsCounter, 723 mSDsluCounter, 2742 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 2991 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:02:01,551 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [729 Valid, 2991 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 926 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2024-11-28 04:02:01,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2024-11-28 04:02:01,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 453. [2024-11-28 04:02:01,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 289 states have (on average 1.782006920415225) internal successors, (515), 427 states have internal predecessors, (515), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (23), 22 states have call predecessors, (23), 22 states have call successors, (23) [2024-11-28 04:02:01,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 560 transitions. [2024-11-28 04:02:01,570 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 560 transitions. Word has length 50 [2024-11-28 04:02:01,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:02:01,571 INFO L471 AbstractCegarLoop]: Abstraction has 453 states and 560 transitions. [2024-11-28 04:02:01,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 3.761904761904762) internal successors, (79), 21 states have internal predecessors, (79), 6 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (6), 2 states have call predecessors, (6), 4 states have call successors, (6) [2024-11-28 04:02:01,571 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 560 transitions. [2024-11-28 04:02:01,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-28 04:02:01,572 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:02:01,572 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:02:01,581 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 04:02:01,776 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:02:01,776 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting func_to_recursive_line_29_to_41_0Err27ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-28 04:02:01,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:01,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1457254303, now seen corresponding path program 1 times [2024-11-28 04:02:01,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:01,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157727056] [2024-11-28 04:02:01,778 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:01,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:01,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:02:01,987 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 04:02:01,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:01,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157727056] [2024-11-28 04:02:01,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157727056] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:02:01,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:02:01,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:02:01,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143392025] [2024-11-28 04:02:01,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:02:01,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:02:01,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:01,989 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:02:01,989 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:02:01,989 INFO L87 Difference]: Start difference. First operand 453 states and 560 transitions. Second operand has 6 states, 4 states have (on average 9.5) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 04:02:02,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:02:02,262 INFO L93 Difference]: Finished difference Result 565 states and 585 transitions. [2024-11-28 04:02:02,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:02:02,263 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 9.5) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 51 [2024-11-28 04:02:02,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:02:02,265 INFO L225 Difference]: With dead ends: 565 [2024-11-28 04:02:02,265 INFO L226 Difference]: Without dead ends: 564 [2024-11-28 04:02:02,265 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:02:02,266 INFO L435 NwaCegarLoop]: 292 mSDtfsCounter, 304 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 1416 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:02:02,266 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 1416 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:02:02,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2024-11-28 04:02:02,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 453. [2024-11-28 04:02:02,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 289 states have (on average 1.778546712802768) internal successors, (514), 427 states have internal predecessors, (514), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (23), 22 states have call predecessors, (23), 22 states have call successors, (23) [2024-11-28 04:02:02,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 559 transitions. [2024-11-28 04:02:02,285 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 559 transitions. Word has length 51 [2024-11-28 04:02:02,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:02:02,286 INFO L471 AbstractCegarLoop]: Abstraction has 453 states and 559 transitions. [2024-11-28 04:02:02,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 9.5) internal successors, (38), 5 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 04:02:02,286 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 559 transitions. [2024-11-28 04:02:02,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-28 04:02:02,286 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:02:02,286 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:02:02,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 04:02:02,287 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting func_to_recursive_line_29_to_41_0Err28ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-28 04:02:02,287 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:02,287 INFO L85 PathProgramCache]: Analyzing trace with hash 2069756960, now seen corresponding path program 1 times [2024-11-28 04:02:02,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:02,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900688953] [2024-11-28 04:02:02,287 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:02,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:02,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:02:02,493 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 04:02:02,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:02,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900688953] [2024-11-28 04:02:02,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900688953] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:02:02,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:02:02,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:02:02,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158617396] [2024-11-28 04:02:02,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:02:02,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:02:02,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:02,495 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:02:02,495 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:02:02,496 INFO L87 Difference]: Start difference. First operand 453 states and 559 transitions. Second operand has 6 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 04:02:02,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:02:02,748 INFO L93 Difference]: Finished difference Result 576 states and 596 transitions. [2024-11-28 04:02:02,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:02:02,748 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 52 [2024-11-28 04:02:02,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:02:02,750 INFO L225 Difference]: With dead ends: 576 [2024-11-28 04:02:02,750 INFO L226 Difference]: Without dead ends: 574 [2024-11-28 04:02:02,751 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:02:02,751 INFO L435 NwaCegarLoop]: 290 mSDtfsCounter, 309 mSDsluCounter, 1126 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 1416 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:02:02,751 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 1416 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:02:02,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2024-11-28 04:02:02,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 453. [2024-11-28 04:02:02,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 289 states have (on average 1.7716262975778547) internal successors, (512), 427 states have internal predecessors, (512), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (23), 22 states have call predecessors, (23), 22 states have call successors, (23) [2024-11-28 04:02:02,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 557 transitions. [2024-11-28 04:02:02,773 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 557 transitions. Word has length 52 [2024-11-28 04:02:02,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:02:02,774 INFO L471 AbstractCegarLoop]: Abstraction has 453 states and 557 transitions. [2024-11-28 04:02:02,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 9.75) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 04:02:02,774 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 557 transitions. [2024-11-28 04:02:02,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-28 04:02:02,775 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:02:02,775 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:02:02,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 04:02:02,775 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting func_to_recursive_line_29_to_41_0Err30ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-28 04:02:02,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:02,775 INFO L85 PathProgramCache]: Analyzing trace with hash 466583682, now seen corresponding path program 1 times [2024-11-28 04:02:02,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:02,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398832024] [2024-11-28 04:02:02,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:02,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:02,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:02:03,003 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 04:02:03,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:03,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398832024] [2024-11-28 04:02:03,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398832024] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:02:03,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:02:03,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:02:03,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354416082] [2024-11-28 04:02:03,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:02:03,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:02:03,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:03,006 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:02:03,007 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:02:03,007 INFO L87 Difference]: Start difference. First operand 453 states and 557 transitions. Second operand has 7 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 04:02:03,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:02:03,336 INFO L93 Difference]: Finished difference Result 574 states and 594 transitions. [2024-11-28 04:02:03,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:02:03,337 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 54 [2024-11-28 04:02:03,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:02:03,339 INFO L225 Difference]: With dead ends: 574 [2024-11-28 04:02:03,339 INFO L226 Difference]: Without dead ends: 572 [2024-11-28 04:02:03,339 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:02:03,340 INFO L435 NwaCegarLoop]: 292 mSDtfsCounter, 310 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 1461 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:02:03,340 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 1461 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:02:03,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2024-11-28 04:02:03,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 453. [2024-11-28 04:02:03,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 289 states have (on average 1.7647058823529411) internal successors, (510), 427 states have internal predecessors, (510), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (23), 22 states have call predecessors, (23), 22 states have call successors, (23) [2024-11-28 04:02:03,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 555 transitions. [2024-11-28 04:02:03,358 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 555 transitions. Word has length 54 [2024-11-28 04:02:03,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:02:03,358 INFO L471 AbstractCegarLoop]: Abstraction has 453 states and 555 transitions. [2024-11-28 04:02:03,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 8.2) internal successors, (41), 6 states have internal predecessors, (41), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 04:02:03,359 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 555 transitions. [2024-11-28 04:02:03,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-28 04:02:03,359 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:02:03,359 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:02:03,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-28 04:02:03,359 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting func_to_recursive_line_29_to_41_0Err31ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-28 04:02:03,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:03,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1579192357, now seen corresponding path program 1 times [2024-11-28 04:02:03,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:03,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994665395] [2024-11-28 04:02:03,360 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:03,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:03,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:02:03,936 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 04:02:03,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:03,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994665395] [2024-11-28 04:02:03,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994665395] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:02:03,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:02:03,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-28 04:02:03,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875098751] [2024-11-28 04:02:03,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:02:03,938 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:02:03,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:03,939 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:02:03,939 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:02:03,939 INFO L87 Difference]: Start difference. First operand 453 states and 555 transitions. Second operand has 8 states, 6 states have (on average 7.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 04:02:04,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:02:04,980 INFO L93 Difference]: Finished difference Result 548 states and 568 transitions. [2024-11-28 04:02:04,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:02:04,981 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 7.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 55 [2024-11-28 04:02:04,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:02:04,983 INFO L225 Difference]: With dead ends: 548 [2024-11-28 04:02:04,984 INFO L226 Difference]: Without dead ends: 546 [2024-11-28 04:02:04,984 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:02:04,985 INFO L435 NwaCegarLoop]: 275 mSDtfsCounter, 292 mSDsluCounter, 1522 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 1797 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:02:04,985 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 1797 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-28 04:02:04,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2024-11-28 04:02:05,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 453. [2024-11-28 04:02:05,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 289 states have (on average 1.7577854671280277) internal successors, (508), 427 states have internal predecessors, (508), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (23), 22 states have call predecessors, (23), 22 states have call successors, (23) [2024-11-28 04:02:05,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 553 transitions. [2024-11-28 04:02:05,006 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 553 transitions. Word has length 55 [2024-11-28 04:02:05,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:02:05,007 INFO L471 AbstractCegarLoop]: Abstraction has 453 states and 553 transitions. [2024-11-28 04:02:05,007 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 7.0) internal successors, (42), 7 states have internal predecessors, (42), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-28 04:02:05,007 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 553 transitions. [2024-11-28 04:02:05,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-28 04:02:05,008 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:02:05,008 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:02:05,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 04:02:05,008 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting func_to_recursive_line_29_to_41_0Err34ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-28 04:02:05,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:05,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1656337381, now seen corresponding path program 1 times [2024-11-28 04:02:05,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:05,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134671579] [2024-11-28 04:02:05,009 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:05,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:05,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:02:05,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [392150263] [2024-11-28 04:02:05,039 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:05,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:02:05,039 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:02:05,041 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:02:05,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:02:05,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:02:05,182 INFO L256 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 04:02:05,185 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:02:05,188 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:02:05,473 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 04:02:05,473 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:02:05,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:05,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134671579] [2024-11-28 04:02:05,474 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:02:05,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392150263] [2024-11-28 04:02:05,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392150263] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:02:05,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:02:05,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:02:05,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618340511] [2024-11-28 04:02:05,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:02:05,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:02:05,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:05,475 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:02:05,475 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:02:05,476 INFO L87 Difference]: Start difference. First operand 453 states and 553 transitions. Second operand has 7 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 04:02:05,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:02:05,775 INFO L93 Difference]: Finished difference Result 582 states and 601 transitions. [2024-11-28 04:02:05,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:02:05,775 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 64 [2024-11-28 04:02:05,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:02:05,777 INFO L225 Difference]: With dead ends: 582 [2024-11-28 04:02:05,778 INFO L226 Difference]: Without dead ends: 581 [2024-11-28 04:02:05,778 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 51 SyntacticMatches, 7 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:02:05,778 INFO L435 NwaCegarLoop]: 276 mSDtfsCounter, 358 mSDsluCounter, 1176 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 1452 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:02:05,778 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [363 Valid, 1452 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:02:05,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2024-11-28 04:02:05,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 453. [2024-11-28 04:02:05,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 289 states have (on average 1.754325259515571) internal successors, (507), 427 states have internal predecessors, (507), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (23), 22 states have call predecessors, (23), 22 states have call successors, (23) [2024-11-28 04:02:05,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 552 transitions. [2024-11-28 04:02:05,801 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 552 transitions. Word has length 64 [2024-11-28 04:02:05,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:02:05,801 INFO L471 AbstractCegarLoop]: Abstraction has 453 states and 552 transitions. [2024-11-28 04:02:05,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 9.2) internal successors, (46), 6 states have internal predecessors, (46), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 04:02:05,802 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 552 transitions. [2024-11-28 04:02:05,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-28 04:02:05,804 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:02:05,804 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:02:05,814 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 04:02:06,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 04:02:06,005 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting func_to_recursive_line_29_to_41_0Err35ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-28 04:02:06,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:06,006 INFO L85 PathProgramCache]: Analyzing trace with hash 193148854, now seen corresponding path program 1 times [2024-11-28 04:02:06,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:06,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451896775] [2024-11-28 04:02:06,006 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:06,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:06,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:02:06,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1750685585] [2024-11-28 04:02:06,033 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:06,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:02:06,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:02:06,035 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:02:06,043 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:02:06,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:02:06,175 INFO L256 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-11-28 04:02:06,179 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:02:06,183 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:02:06,523 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 04:02:06,523 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:02:06,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:06,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451896775] [2024-11-28 04:02:06,688 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:02:06,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750685585] [2024-11-28 04:02:06,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750685585] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:02:06,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:02:06,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-11-28 04:02:06,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038713449] [2024-11-28 04:02:06,688 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 04:02:06,688 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 04:02:06,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:06,689 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 04:02:06,689 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:02:06,689 INFO L87 Difference]: Start difference. First operand 453 states and 552 transitions. Second operand has 11 states, 9 states have (on average 5.555555555555555) internal successors, (50), 10 states have internal predecessors, (50), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 04:02:07,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:02:07,512 INFO L93 Difference]: Finished difference Result 581 states and 600 transitions. [2024-11-28 04:02:07,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-28 04:02:07,512 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 5.555555555555555) internal successors, (50), 10 states have internal predecessors, (50), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 65 [2024-11-28 04:02:07,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:02:07,515 INFO L225 Difference]: With dead ends: 581 [2024-11-28 04:02:07,515 INFO L226 Difference]: Without dead ends: 580 [2024-11-28 04:02:07,516 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 52 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2024-11-28 04:02:07,516 INFO L435 NwaCegarLoop]: 264 mSDtfsCounter, 420 mSDsluCounter, 2281 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 425 SdHoareTripleChecker+Valid, 2545 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:02:07,517 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [425 Valid, 2545 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:02:07,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2024-11-28 04:02:07,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 453. [2024-11-28 04:02:07,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 289 states have (on average 1.7508650519031141) internal successors, (506), 427 states have internal predecessors, (506), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (23), 22 states have call predecessors, (23), 22 states have call successors, (23) [2024-11-28 04:02:07,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 551 transitions. [2024-11-28 04:02:07,542 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 551 transitions. Word has length 65 [2024-11-28 04:02:07,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:02:07,543 INFO L471 AbstractCegarLoop]: Abstraction has 453 states and 551 transitions. [2024-11-28 04:02:07,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 5.555555555555555) internal successors, (50), 10 states have internal predecessors, (50), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 04:02:07,543 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 551 transitions. [2024-11-28 04:02:07,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-28 04:02:07,544 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:02:07,544 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:02:07,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-28 04:02:07,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:02:07,749 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting func_to_recursive_line_29_to_41_0Err36ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-28 04:02:07,749 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:07,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1692647293, now seen corresponding path program 1 times [2024-11-28 04:02:07,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:07,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417884219] [2024-11-28 04:02:07,750 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:07,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:07,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:02:08,002 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 04:02:08,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:08,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417884219] [2024-11-28 04:02:08,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417884219] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:02:08,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:02:08,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:02:08,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132608142] [2024-11-28 04:02:08,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:02:08,004 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:02:08,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:08,005 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:02:08,005 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:02:08,006 INFO L87 Difference]: Start difference. First operand 453 states and 551 transitions. Second operand has 6 states, 4 states have (on average 12.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 04:02:08,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:02:08,253 INFO L93 Difference]: Finished difference Result 556 states and 576 transitions. [2024-11-28 04:02:08,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:02:08,254 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 12.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 66 [2024-11-28 04:02:08,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:02:08,255 INFO L225 Difference]: With dead ends: 556 [2024-11-28 04:02:08,255 INFO L226 Difference]: Without dead ends: 554 [2024-11-28 04:02:08,256 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:02:08,256 INFO L435 NwaCegarLoop]: 290 mSDtfsCounter, 274 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:02:08,256 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 1423 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:02:08,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2024-11-28 04:02:08,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 453. [2024-11-28 04:02:08,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 289 states have (on average 1.7439446366782008) internal successors, (504), 427 states have internal predecessors, (504), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (23), 22 states have call predecessors, (23), 22 states have call successors, (23) [2024-11-28 04:02:08,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 549 transitions. [2024-11-28 04:02:08,274 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 549 transitions. Word has length 66 [2024-11-28 04:02:08,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:02:08,274 INFO L471 AbstractCegarLoop]: Abstraction has 453 states and 549 transitions. [2024-11-28 04:02:08,274 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 12.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 04:02:08,274 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 549 transitions. [2024-11-28 04:02:08,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-28 04:02:08,275 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:02:08,275 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:02:08,275 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-28 04:02:08,275 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting func_to_recursive_line_29_to_41_0Err38ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-28 04:02:08,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:08,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1158552865, now seen corresponding path program 1 times [2024-11-28 04:02:08,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:08,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683725532] [2024-11-28 04:02:08,276 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:08,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:08,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:02:08,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1621115568] [2024-11-28 04:02:08,305 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:08,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:02:08,305 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:02:08,307 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:02:08,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 04:02:08,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:02:08,439 INFO L256 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 04:02:08,443 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:02:08,449 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:02:08,797 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 04:02:08,830 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-28 04:02:08,830 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:02:08,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:08,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683725532] [2024-11-28 04:02:08,830 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:02:08,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621115568] [2024-11-28 04:02:08,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621115568] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:02:08,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:02:08,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-28 04:02:08,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762662223] [2024-11-28 04:02:08,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:02:08,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 04:02:08,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:08,831 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 04:02:08,831 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:02:08,831 INFO L87 Difference]: Start difference. First operand 453 states and 549 transitions. Second operand has 11 states, 9 states have (on average 5.888888888888889) internal successors, (53), 10 states have internal predecessors, (53), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 04:02:13,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:02:13,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:02:13,475 INFO L93 Difference]: Finished difference Result 578 states and 597 transitions. [2024-11-28 04:02:13,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 04:02:13,475 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 5.888888888888889) internal successors, (53), 10 states have internal predecessors, (53), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 68 [2024-11-28 04:02:13,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:02:13,478 INFO L225 Difference]: With dead ends: 578 [2024-11-28 04:02:13,478 INFO L226 Difference]: Without dead ends: 577 [2024-11-28 04:02:13,478 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 52 SyntacticMatches, 6 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2024-11-28 04:02:13,479 INFO L435 NwaCegarLoop]: 260 mSDtfsCounter, 698 mSDsluCounter, 1695 mSDsCounter, 0 mSdLazyCounter, 462 mSolverCounterSat, 39 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 1955 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 462 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:02:13,479 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 1955 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 462 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2024-11-28 04:02:13,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2024-11-28 04:02:13,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 453. [2024-11-28 04:02:13,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 289 states have (on average 1.740484429065744) internal successors, (503), 427 states have internal predecessors, (503), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (23), 22 states have call predecessors, (23), 22 states have call successors, (23) [2024-11-28 04:02:13,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 548 transitions. [2024-11-28 04:02:13,497 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 548 transitions. Word has length 68 [2024-11-28 04:02:13,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:02:13,497 INFO L471 AbstractCegarLoop]: Abstraction has 453 states and 548 transitions. [2024-11-28 04:02:13,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 5.888888888888889) internal successors, (53), 10 states have internal predecessors, (53), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 04:02:13,497 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 548 transitions. [2024-11-28 04:02:13,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-28 04:02:13,498 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:02:13,498 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:02:13,508 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 04:02:13,702 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:02:13,702 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting func_to_recursive_line_29_to_41_0Err39ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-28 04:02:13,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:13,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1555400326, now seen corresponding path program 1 times [2024-11-28 04:02:13,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:13,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041367872] [2024-11-28 04:02:13,703 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:13,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:13,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:02:13,968 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 04:02:13,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:13,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041367872] [2024-11-28 04:02:13,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041367872] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:02:13,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:02:13,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:02:13,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584224987] [2024-11-28 04:02:13,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:02:13,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:02:13,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:13,969 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:02:13,970 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:02:13,970 INFO L87 Difference]: Start difference. First operand 453 states and 548 transitions. Second operand has 6 states, 4 states have (on average 12.75) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 04:02:14,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:02:14,379 INFO L93 Difference]: Finished difference Result 553 states and 573 transitions. [2024-11-28 04:02:14,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:02:14,379 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 12.75) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 69 [2024-11-28 04:02:14,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:02:14,381 INFO L225 Difference]: With dead ends: 553 [2024-11-28 04:02:14,381 INFO L226 Difference]: Without dead ends: 552 [2024-11-28 04:02:14,381 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:02:14,383 INFO L435 NwaCegarLoop]: 292 mSDtfsCounter, 267 mSDsluCounter, 1131 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 1423 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:02:14,383 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 1423 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:02:14,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2024-11-28 04:02:14,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 453. [2024-11-28 04:02:14,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 289 states have (on average 1.7370242214532872) internal successors, (502), 427 states have internal predecessors, (502), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (23), 22 states have call predecessors, (23), 22 states have call successors, (23) [2024-11-28 04:02:14,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 547 transitions. [2024-11-28 04:02:14,402 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 547 transitions. Word has length 69 [2024-11-28 04:02:14,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:02:14,402 INFO L471 AbstractCegarLoop]: Abstraction has 453 states and 547 transitions. [2024-11-28 04:02:14,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 12.75) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 04:02:14,402 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 547 transitions. [2024-11-28 04:02:14,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-28 04:02:14,403 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:02:14,403 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:02:14,403 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-28 04:02:14,403 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting func_to_recursive_line_29_to_41_0Err40ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-28 04:02:14,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:14,403 INFO L85 PathProgramCache]: Analyzing trace with hash -972769727, now seen corresponding path program 1 times [2024-11-28 04:02:14,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:14,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625560864] [2024-11-28 04:02:14,404 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:14,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:14,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:02:14,571 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 04:02:14,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:14,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625560864] [2024-11-28 04:02:14,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625560864] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:02:14,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:02:14,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:02:14,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346064348] [2024-11-28 04:02:14,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:02:14,572 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:02:14,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:14,572 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:02:14,573 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:02:14,573 INFO L87 Difference]: Start difference. First operand 453 states and 547 transitions. Second operand has 6 states, 4 states have (on average 13.0) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 04:02:14,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:02:14,810 INFO L93 Difference]: Finished difference Result 564 states and 584 transitions. [2024-11-28 04:02:14,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:02:14,811 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 13.0) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 70 [2024-11-28 04:02:14,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:02:14,813 INFO L225 Difference]: With dead ends: 564 [2024-11-28 04:02:14,813 INFO L226 Difference]: Without dead ends: 562 [2024-11-28 04:02:14,813 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:02:14,814 INFO L435 NwaCegarLoop]: 290 mSDtfsCounter, 272 mSDsluCounter, 1125 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 277 SdHoareTripleChecker+Valid, 1415 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:02:14,814 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [277 Valid, 1415 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:02:14,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2024-11-28 04:02:14,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 453. [2024-11-28 04:02:14,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 289 states have (on average 1.7301038062283738) internal successors, (500), 427 states have internal predecessors, (500), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (23), 22 states have call predecessors, (23), 22 states have call successors, (23) [2024-11-28 04:02:14,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 545 transitions. [2024-11-28 04:02:14,831 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 545 transitions. Word has length 70 [2024-11-28 04:02:14,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:02:14,831 INFO L471 AbstractCegarLoop]: Abstraction has 453 states and 545 transitions. [2024-11-28 04:02:14,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 13.0) internal successors, (52), 5 states have internal predecessors, (52), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 04:02:14,832 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 545 transitions. [2024-11-28 04:02:14,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-28 04:02:14,832 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:02:14,832 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:02:14,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-28 04:02:14,833 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting func_to_recursive_line_29_to_41_0Err42ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-28 04:02:14,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:14,833 INFO L85 PathProgramCache]: Analyzing trace with hash 1471166883, now seen corresponding path program 1 times [2024-11-28 04:02:14,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:14,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71720578] [2024-11-28 04:02:14,833 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:14,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:14,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:02:14,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1739254532] [2024-11-28 04:02:14,858 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:14,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:02:14,858 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:02:14,860 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:02:14,862 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 04:02:14,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:02:14,995 INFO L256 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-28 04:02:14,998 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:02:15,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 04:02:15,013 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:02:15,497 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 04:02:15,588 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 04:02:15,588 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:02:15,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:15,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71720578] [2024-11-28 04:02:15,588 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:02:15,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739254532] [2024-11-28 04:02:15,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739254532] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:02:15,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:02:15,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 04:02:15,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613659926] [2024-11-28 04:02:15,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:02:15,589 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 04:02:15,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:15,590 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 04:02:15,590 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:02:15,590 INFO L87 Difference]: Start difference. First operand 453 states and 545 transitions. Second operand has 9 states, 7 states have (on average 7.714285714285714) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 04:02:16,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:02:16,097 INFO L93 Difference]: Finished difference Result 570 states and 589 transitions. [2024-11-28 04:02:16,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:02:16,098 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 7.714285714285714) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 72 [2024-11-28 04:02:16,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:02:16,099 INFO L225 Difference]: With dead ends: 570 [2024-11-28 04:02:16,099 INFO L226 Difference]: Without dead ends: 568 [2024-11-28 04:02:16,100 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 57 SyntacticMatches, 7 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:02:16,100 INFO L435 NwaCegarLoop]: 269 mSDtfsCounter, 450 mSDsluCounter, 1344 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 1613 SdHoareTripleChecker+Invalid, 364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:02:16,100 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [455 Valid, 1613 Invalid, 364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:02:16,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2024-11-28 04:02:16,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 453. [2024-11-28 04:02:16,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 289 states have (on average 1.7231833910034602) internal successors, (498), 427 states have internal predecessors, (498), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (23), 22 states have call predecessors, (23), 22 states have call successors, (23) [2024-11-28 04:02:16,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 543 transitions. [2024-11-28 04:02:16,119 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 543 transitions. Word has length 72 [2024-11-28 04:02:16,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:02:16,119 INFO L471 AbstractCegarLoop]: Abstraction has 453 states and 543 transitions. [2024-11-28 04:02:16,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 7.714285714285714) internal successors, (54), 8 states have internal predecessors, (54), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 04:02:16,119 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 543 transitions. [2024-11-28 04:02:16,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-28 04:02:16,120 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:02:16,120 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:02:16,130 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 04:02:16,320 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:02:16,321 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting func_to_recursive_line_29_to_41_0Err43ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-28 04:02:16,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:16,322 INFO L85 PathProgramCache]: Analyzing trace with hash -1638466754, now seen corresponding path program 1 times [2024-11-28 04:02:16,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:16,322 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372655775] [2024-11-28 04:02:16,322 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:16,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:16,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:02:16,854 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 04:02:16,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:16,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372655775] [2024-11-28 04:02:16,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372655775] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:02:16,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:02:16,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:02:16,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010475752] [2024-11-28 04:02:16,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:02:16,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:02:16,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:16,856 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:02:16,856 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:02:16,856 INFO L87 Difference]: Start difference. First operand 453 states and 543 transitions. Second operand has 7 states, 5 states have (on average 11.0) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 04:02:17,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:02:17,518 INFO L93 Difference]: Finished difference Result 548 states and 568 transitions. [2024-11-28 04:02:17,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:02:17,519 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 11.0) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 73 [2024-11-28 04:02:17,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:02:17,520 INFO L225 Difference]: With dead ends: 548 [2024-11-28 04:02:17,520 INFO L226 Difference]: Without dead ends: 546 [2024-11-28 04:02:17,521 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:02:17,521 INFO L435 NwaCegarLoop]: 283 mSDtfsCounter, 256 mSDsluCounter, 1328 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 1611 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:02:17,521 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 1611 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 04:02:17,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2024-11-28 04:02:17,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 453. [2024-11-28 04:02:17,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 289 states have (on average 1.7162629757785468) internal successors, (496), 427 states have internal predecessors, (496), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (23), 22 states have call predecessors, (23), 22 states have call successors, (23) [2024-11-28 04:02:17,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 541 transitions. [2024-11-28 04:02:17,541 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 541 transitions. Word has length 73 [2024-11-28 04:02:17,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:02:17,541 INFO L471 AbstractCegarLoop]: Abstraction has 453 states and 541 transitions. [2024-11-28 04:02:17,541 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 11.0) internal successors, (55), 6 states have internal predecessors, (55), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 04:02:17,541 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 541 transitions. [2024-11-28 04:02:17,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-28 04:02:17,542 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:02:17,542 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:02:17,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-28 04:02:17,543 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting func_to_recursive_line_29_to_41_0Err46ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-28 04:02:17,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:17,543 INFO L85 PathProgramCache]: Analyzing trace with hash -814628251, now seen corresponding path program 1 times [2024-11-28 04:02:17,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:17,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476281527] [2024-11-28 04:02:17,543 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:17,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:17,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:02:17,727 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-28 04:02:17,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:17,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476281527] [2024-11-28 04:02:17,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476281527] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:02:17,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:02:17,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:02:17,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201237317] [2024-11-28 04:02:17,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:02:17,728 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:02:17,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:17,729 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:02:17,729 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:02:17,729 INFO L87 Difference]: Start difference. First operand 453 states and 541 transitions. Second operand has 6 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-28 04:02:17,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:02:17,878 INFO L93 Difference]: Finished difference Result 457 states and 545 transitions. [2024-11-28 04:02:17,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:02:17,878 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 83 [2024-11-28 04:02:17,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:02:17,881 INFO L225 Difference]: With dead ends: 457 [2024-11-28 04:02:17,881 INFO L226 Difference]: Without dead ends: 455 [2024-11-28 04:02:17,882 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:02:17,883 INFO L435 NwaCegarLoop]: 307 mSDtfsCounter, 62 mSDsluCounter, 1201 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 1508 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:02:17,884 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 1508 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:02:17,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2024-11-28 04:02:17,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 455. [2024-11-28 04:02:17,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 291 states have (on average 1.711340206185567) internal successors, (498), 429 states have internal predecessors, (498), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (23), 22 states have call predecessors, (23), 22 states have call successors, (23) [2024-11-28 04:02:17,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 543 transitions. [2024-11-28 04:02:17,903 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 543 transitions. Word has length 83 [2024-11-28 04:02:17,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:02:17,904 INFO L471 AbstractCegarLoop]: Abstraction has 455 states and 543 transitions. [2024-11-28 04:02:17,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 15.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-28 04:02:17,904 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 543 transitions. [2024-11-28 04:02:17,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-28 04:02:17,905 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:02:17,905 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:02:17,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-28 04:02:17,905 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting func_to_recursive_line_29_to_41_0Err48ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-28 04:02:17,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:17,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1173696761, now seen corresponding path program 1 times [2024-11-28 04:02:17,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:17,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89954251] [2024-11-28 04:02:17,906 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:17,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:17,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:02:18,275 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-28 04:02:18,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:18,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89954251] [2024-11-28 04:02:18,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89954251] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:02:18,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:02:18,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:02:18,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826466170] [2024-11-28 04:02:18,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:02:18,277 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:02:18,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:18,277 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:02:18,277 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:02:18,278 INFO L87 Difference]: Start difference. First operand 455 states and 543 transitions. Second operand has 6 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-28 04:02:18,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:02:18,511 INFO L93 Difference]: Finished difference Result 532 states and 552 transitions. [2024-11-28 04:02:18,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:02:18,512 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 85 [2024-11-28 04:02:18,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:02:18,514 INFO L225 Difference]: With dead ends: 532 [2024-11-28 04:02:18,514 INFO L226 Difference]: Without dead ends: 530 [2024-11-28 04:02:18,514 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:02:18,514 INFO L435 NwaCegarLoop]: 297 mSDtfsCounter, 209 mSDsluCounter, 1130 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 1427 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:02:18,514 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 1427 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:02:18,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2024-11-28 04:02:18,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 457. [2024-11-28 04:02:18,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 293 states have (on average 1.7064846416382253) internal successors, (500), 431 states have internal predecessors, (500), 22 states have call successors, (22), 4 states have call predecessors, (22), 4 states have return successors, (23), 22 states have call predecessors, (23), 22 states have call successors, (23) [2024-11-28 04:02:18,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 545 transitions. [2024-11-28 04:02:18,532 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 545 transitions. Word has length 85 [2024-11-28 04:02:18,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:02:18,533 INFO L471 AbstractCegarLoop]: Abstraction has 457 states and 545 transitions. [2024-11-28 04:02:18,533 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-28 04:02:18,533 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 545 transitions. [2024-11-28 04:02:18,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-28 04:02:18,534 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:02:18,534 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:02:18,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-28 04:02:18,534 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-28 04:02:18,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:18,534 INFO L85 PathProgramCache]: Analyzing trace with hash -2024995937, now seen corresponding path program 1 times [2024-11-28 04:02:18,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:18,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293719492] [2024-11-28 04:02:18,534 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:18,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:18,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:02:18,682 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-28 04:02:18,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:18,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293719492] [2024-11-28 04:02:18,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293719492] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:02:18,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:02:18,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:02:18,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274576514] [2024-11-28 04:02:18,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:02:18,683 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:02:18,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:18,683 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:02:18,683 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:02:18,684 INFO L87 Difference]: Start difference. First operand 457 states and 545 transitions. Second operand has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-28 04:02:18,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:02:18,852 INFO L93 Difference]: Finished difference Result 463 states and 547 transitions. [2024-11-28 04:02:18,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:02:18,853 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 86 [2024-11-28 04:02:18,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:02:18,855 INFO L225 Difference]: With dead ends: 463 [2024-11-28 04:02:18,855 INFO L226 Difference]: Without dead ends: 459 [2024-11-28 04:02:18,855 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:02:18,855 INFO L435 NwaCegarLoop]: 297 mSDtfsCounter, 57 mSDsluCounter, 752 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 1049 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:02:18,859 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 1049 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:02:18,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2024-11-28 04:02:18,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 459. [2024-11-28 04:02:18,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 459 states, 294 states have (on average 1.6904761904761905) internal successors, (497), 432 states have internal predecessors, (497), 22 states have call successors, (22), 4 states have call predecessors, (22), 5 states have return successors, (24), 22 states have call predecessors, (24), 22 states have call successors, (24) [2024-11-28 04:02:18,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 459 states to 459 states and 543 transitions. [2024-11-28 04:02:18,909 INFO L78 Accepts]: Start accepts. Automaton has 459 states and 543 transitions. Word has length 86 [2024-11-28 04:02:18,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:02:18,912 INFO L471 AbstractCegarLoop]: Abstraction has 459 states and 543 transitions. [2024-11-28 04:02:18,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 15.5) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-28 04:02:18,913 INFO L276 IsEmpty]: Start isEmpty. Operand 459 states and 543 transitions. [2024-11-28 04:02:18,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-28 04:02:18,913 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:02:18,914 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:02:18,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-28 04:02:18,914 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting func_to_recursive_line_29_to_41_0Err50ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-28 04:02:18,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:18,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1653816233, now seen corresponding path program 1 times [2024-11-28 04:02:18,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:18,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191773546] [2024-11-28 04:02:18,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:18,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:18,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:02:19,274 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-28 04:02:19,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:19,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191773546] [2024-11-28 04:02:19,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191773546] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:02:19,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:02:19,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:02:19,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210361326] [2024-11-28 04:02:19,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:02:19,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:02:19,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:19,276 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:02:19,276 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:02:19,276 INFO L87 Difference]: Start difference. First operand 459 states and 543 transitions. Second operand has 6 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-28 04:02:19,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:02:19,583 INFO L93 Difference]: Finished difference Result 540 states and 560 transitions. [2024-11-28 04:02:19,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:02:19,584 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 87 [2024-11-28 04:02:19,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:02:19,586 INFO L225 Difference]: With dead ends: 540 [2024-11-28 04:02:19,586 INFO L226 Difference]: Without dead ends: 538 [2024-11-28 04:02:19,586 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:02:19,587 INFO L435 NwaCegarLoop]: 291 mSDtfsCounter, 215 mSDsluCounter, 1106 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 1397 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:02:19,587 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 1397 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:02:19,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2024-11-28 04:02:19,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 461. [2024-11-28 04:02:19,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 296 states have (on average 1.6858108108108107) internal successors, (499), 434 states have internal predecessors, (499), 22 states have call successors, (22), 4 states have call predecessors, (22), 5 states have return successors, (24), 22 states have call predecessors, (24), 22 states have call successors, (24) [2024-11-28 04:02:19,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 545 transitions. [2024-11-28 04:02:19,603 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 545 transitions. Word has length 87 [2024-11-28 04:02:19,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:02:19,604 INFO L471 AbstractCegarLoop]: Abstraction has 461 states and 545 transitions. [2024-11-28 04:02:19,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 16.0) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-28 04:02:19,604 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 545 transitions. [2024-11-28 04:02:19,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-28 04:02:19,605 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:02:19,605 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:02:19,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-28 04:02:19,605 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting func_to_recursive_line_29_to_41_0Err52ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-28 04:02:19,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:19,605 INFO L85 PathProgramCache]: Analyzing trace with hash 179505227, now seen corresponding path program 1 times [2024-11-28 04:02:19,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:19,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824878308] [2024-11-28 04:02:19,606 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:19,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:19,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:02:19,813 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-28 04:02:19,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:19,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824878308] [2024-11-28 04:02:19,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824878308] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:02:19,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:02:19,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:02:19,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76894467] [2024-11-28 04:02:19,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:02:19,814 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:02:19,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:19,814 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:02:19,815 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:02:19,815 INFO L87 Difference]: Start difference. First operand 461 states and 545 transitions. Second operand has 6 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-28 04:02:20,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:02:20,046 INFO L93 Difference]: Finished difference Result 550 states and 570 transitions. [2024-11-28 04:02:20,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:02:20,046 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 89 [2024-11-28 04:02:20,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:02:20,048 INFO L225 Difference]: With dead ends: 550 [2024-11-28 04:02:20,048 INFO L226 Difference]: Without dead ends: 548 [2024-11-28 04:02:20,049 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:02:20,049 INFO L435 NwaCegarLoop]: 299 mSDtfsCounter, 225 mSDsluCounter, 1144 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 1443 SdHoareTripleChecker+Invalid, 162 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:02:20,050 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 1443 Invalid, 162 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:02:20,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2024-11-28 04:02:20,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 463. [2024-11-28 04:02:20,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 298 states have (on average 1.6812080536912752) internal successors, (501), 436 states have internal predecessors, (501), 22 states have call successors, (22), 4 states have call predecessors, (22), 5 states have return successors, (24), 22 states have call predecessors, (24), 22 states have call successors, (24) [2024-11-28 04:02:20,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 547 transitions. [2024-11-28 04:02:20,068 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 547 transitions. Word has length 89 [2024-11-28 04:02:20,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:02:20,068 INFO L471 AbstractCegarLoop]: Abstraction has 463 states and 547 transitions. [2024-11-28 04:02:20,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 16.5) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-28 04:02:20,069 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 547 transitions. [2024-11-28 04:02:20,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-28 04:02:20,069 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:02:20,069 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:02:20,070 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-28 04:02:20,070 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting func_to_recursive_line_29_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-28 04:02:20,070 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:20,070 INFO L85 PathProgramCache]: Analyzing trace with hash -585186275, now seen corresponding path program 1 times [2024-11-28 04:02:20,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:20,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311456440] [2024-11-28 04:02:20,071 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:20,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:20,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:02:20,508 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-28 04:02:20,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:20,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311456440] [2024-11-28 04:02:20,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311456440] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:02:20,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116210358] [2024-11-28 04:02:20,509 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:20,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:02:20,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:02:20,512 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:02:20,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 04:02:20,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:02:20,671 INFO L256 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 04:02:20,674 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:02:21,157 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 15 [2024-11-28 04:02:21,205 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-28 04:02:21,222 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-28 04:02:21,222 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:02:21,518 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-28 04:02:21,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116210358] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:02:21,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:02:21,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 20 [2024-11-28 04:02:21,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827359213] [2024-11-28 04:02:21,519 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:02:21,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 04:02:21,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:21,520 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 04:02:21,520 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2024-11-28 04:02:21,521 INFO L87 Difference]: Start difference. First operand 463 states and 547 transitions. Second operand has 21 states, 19 states have (on average 10.68421052631579) internal successors, (203), 17 states have internal predecessors, (203), 7 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-28 04:02:22,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:02:22,164 INFO L93 Difference]: Finished difference Result 466 states and 554 transitions. [2024-11-28 04:02:22,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 04:02:22,165 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 10.68421052631579) internal successors, (203), 17 states have internal predecessors, (203), 7 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 94 [2024-11-28 04:02:22,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:02:22,167 INFO L225 Difference]: With dead ends: 466 [2024-11-28 04:02:22,167 INFO L226 Difference]: Without dead ends: 463 [2024-11-28 04:02:22,168 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 167 SyntacticMatches, 11 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=172, Invalid=584, Unknown=0, NotChecked=0, Total=756 [2024-11-28 04:02:22,169 INFO L435 NwaCegarLoop]: 347 mSDtfsCounter, 729 mSDsluCounter, 3028 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 3375 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:02:22,169 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [729 Valid, 3375 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:02:22,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2024-11-28 04:02:22,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 460. [2024-11-28 04:02:22,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 460 states, 298 states have (on average 1.6711409395973154) internal successors, (498), 433 states have internal predecessors, (498), 22 states have call successors, (22), 4 states have call predecessors, (22), 5 states have return successors, (24), 22 states have call predecessors, (24), 22 states have call successors, (24) [2024-11-28 04:02:22,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 544 transitions. [2024-11-28 04:02:22,189 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 544 transitions. Word has length 94 [2024-11-28 04:02:22,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:02:22,189 INFO L471 AbstractCegarLoop]: Abstraction has 460 states and 544 transitions. [2024-11-28 04:02:22,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 10.68421052631579) internal successors, (203), 17 states have internal predecessors, (203), 7 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2024-11-28 04:02:22,190 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 544 transitions. [2024-11-28 04:02:22,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-28 04:02:22,190 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:02:22,191 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:02:22,201 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 04:02:22,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-11-28 04:02:22,391 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting func_to_recursive_line_29_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-28 04:02:22,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:22,392 INFO L85 PathProgramCache]: Analyzing trace with hash -960905304, now seen corresponding path program 1 times [2024-11-28 04:02:22,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:22,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26022077] [2024-11-28 04:02:22,392 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:22,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:22,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:02:22,867 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-28 04:02:22,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:22,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26022077] [2024-11-28 04:02:22,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26022077] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:02:22,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351094150] [2024-11-28 04:02:22,867 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:22,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:02:22,868 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:02:22,870 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:02:22,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 04:02:23,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:02:23,038 INFO L256 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-28 04:02:23,040 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:02:23,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-28 04:02:23,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 04:02:23,571 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-28 04:02:23,571 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:02:23,915 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-28 04:02:23,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351094150] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:02:23,915 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:02:23,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 17 [2024-11-28 04:02:23,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524146445] [2024-11-28 04:02:23,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:02:23,916 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 04:02:23,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:23,917 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 04:02:23,917 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2024-11-28 04:02:23,917 INFO L87 Difference]: Start difference. First operand 460 states and 544 transitions. Second operand has 18 states, 16 states have (on average 9.3125) internal successors, (149), 15 states have internal predecessors, (149), 6 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 04:02:28,764 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:02:28,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:02:28,833 INFO L93 Difference]: Finished difference Result 591 states and 689 transitions. [2024-11-28 04:02:28,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-28 04:02:28,833 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 9.3125) internal successors, (149), 15 states have internal predecessors, (149), 6 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 95 [2024-11-28 04:02:28,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:02:28,836 INFO L225 Difference]: With dead ends: 591 [2024-11-28 04:02:28,836 INFO L226 Difference]: Without dead ends: 588 [2024-11-28 04:02:28,836 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 172 SyntacticMatches, 13 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=265, Invalid=791, Unknown=0, NotChecked=0, Total=1056 [2024-11-28 04:02:28,837 INFO L435 NwaCegarLoop]: 291 mSDtfsCounter, 732 mSDsluCounter, 2997 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 45 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 3288 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:02:28,837 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [732 Valid, 3288 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 408 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2024-11-28 04:02:28,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2024-11-28 04:02:28,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 524. [2024-11-28 04:02:28,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 355 states have (on average 1.6788732394366197) internal successors, (596), 489 states have internal predecessors, (596), 28 states have call successors, (28), 5 states have call predecessors, (28), 8 states have return successors, (34), 29 states have call predecessors, (34), 28 states have call successors, (34) [2024-11-28 04:02:28,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 658 transitions. [2024-11-28 04:02:28,869 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 658 transitions. Word has length 95 [2024-11-28 04:02:28,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:02:28,870 INFO L471 AbstractCegarLoop]: Abstraction has 524 states and 658 transitions. [2024-11-28 04:02:28,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 9.3125) internal successors, (149), 15 states have internal predecessors, (149), 6 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 04:02:28,871 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 658 transitions. [2024-11-28 04:02:28,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-28 04:02:28,873 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:02:28,873 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:02:28,884 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 04:02:29,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-28 04:02:29,074 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-28 04:02:29,075 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:29,075 INFO L85 PathProgramCache]: Analyzing trace with hash 431466758, now seen corresponding path program 1 times [2024-11-28 04:02:29,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:29,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905362392] [2024-11-28 04:02:29,075 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:29,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:29,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:02:29,223 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-28 04:02:29,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:29,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905362392] [2024-11-28 04:02:29,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905362392] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:02:29,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:02:29,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:02:29,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066217647] [2024-11-28 04:02:29,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:02:29,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:02:29,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:29,225 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:02:29,225 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:02:29,225 INFO L87 Difference]: Start difference. First operand 524 states and 658 transitions. Second operand has 4 states, 3 states have (on average 22.333333333333332) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 04:02:29,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:02:29,308 INFO L93 Difference]: Finished difference Result 524 states and 658 transitions. [2024-11-28 04:02:29,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:02:29,309 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 22.333333333333332) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 96 [2024-11-28 04:02:29,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:02:29,311 INFO L225 Difference]: With dead ends: 524 [2024-11-28 04:02:29,311 INFO L226 Difference]: Without dead ends: 523 [2024-11-28 04:02:29,311 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:02:29,312 INFO L435 NwaCegarLoop]: 296 mSDtfsCounter, 48 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:02:29,312 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 850 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:02:29,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2024-11-28 04:02:29,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 523. [2024-11-28 04:02:29,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 355 states have (on average 1.6732394366197183) internal successors, (594), 488 states have internal predecessors, (594), 28 states have call successors, (28), 5 states have call predecessors, (28), 8 states have return successors, (34), 29 states have call predecessors, (34), 28 states have call successors, (34) [2024-11-28 04:02:29,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 656 transitions. [2024-11-28 04:02:29,336 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 656 transitions. Word has length 96 [2024-11-28 04:02:29,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:02:29,336 INFO L471 AbstractCegarLoop]: Abstraction has 523 states and 656 transitions. [2024-11-28 04:02:29,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 22.333333333333332) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 04:02:29,337 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 656 transitions. [2024-11-28 04:02:29,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-28 04:02:29,341 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:02:29,342 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:02:29,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-28 04:02:29,342 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-28 04:02:29,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:29,342 INFO L85 PathProgramCache]: Analyzing trace with hash 490567789, now seen corresponding path program 1 times [2024-11-28 04:02:29,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:29,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798613729] [2024-11-28 04:02:29,343 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:29,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:29,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:02:29,796 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-28 04:02:29,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:02:29,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798613729] [2024-11-28 04:02:29,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798613729] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:02:29,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:02:29,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 04:02:29,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154882835] [2024-11-28 04:02:29,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:02:29,798 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 04:02:29,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:02:29,798 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 04:02:29,798 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:02:29,799 INFO L87 Difference]: Start difference. First operand 523 states and 656 transitions. Second operand has 9 states, 7 states have (on average 9.714285714285714) internal successors, (68), 8 states have internal predecessors, (68), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 04:02:30,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:02:30,274 INFO L93 Difference]: Finished difference Result 536 states and 656 transitions. [2024-11-28 04:02:30,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:02:30,275 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 9.714285714285714) internal successors, (68), 8 states have internal predecessors, (68), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) Word has length 97 [2024-11-28 04:02:30,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:02:30,277 INFO L225 Difference]: With dead ends: 536 [2024-11-28 04:02:30,277 INFO L226 Difference]: Without dead ends: 535 [2024-11-28 04:02:30,278 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:02:30,278 INFO L435 NwaCegarLoop]: 276 mSDtfsCounter, 93 mSDsluCounter, 1667 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 1943 SdHoareTripleChecker+Invalid, 359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:02:30,278 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 1943 Invalid, 359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:02:30,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2024-11-28 04:02:30,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 523. [2024-11-28 04:02:30,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 355 states have (on average 1.6704225352112676) internal successors, (593), 488 states have internal predecessors, (593), 28 states have call successors, (28), 5 states have call predecessors, (28), 8 states have return successors, (34), 29 states have call predecessors, (34), 28 states have call successors, (34) [2024-11-28 04:02:30,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 655 transitions. [2024-11-28 04:02:30,306 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 655 transitions. Word has length 97 [2024-11-28 04:02:30,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:02:30,307 INFO L471 AbstractCegarLoop]: Abstraction has 523 states and 655 transitions. [2024-11-28 04:02:30,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 9.714285714285714) internal successors, (68), 8 states have internal predecessors, (68), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 04:02:30,308 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 655 transitions. [2024-11-28 04:02:30,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-28 04:02:30,309 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:02:30,309 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:02:30,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-28 04:02:30,310 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-28 04:02:30,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:02:30,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1972267544, now seen corresponding path program 1 times [2024-11-28 04:02:30,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:02:30,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239432741] [2024-11-28 04:02:30,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:30,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:02:30,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:02:30,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1254809041] [2024-11-28 04:02:30,345 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:02:30,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:02:30,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:02:30,348 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:02:30,351 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 04:02:30,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:02:30,502 INFO L256 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-28 04:02:30,506 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:02:30,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 04:02:30,548 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:02:30,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:03:03,064 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-11-28 04:03:07,864 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:03:07,864 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 69 [2024-11-28 04:03:07,960 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 5 proven. 31 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 04:03:07,960 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:03:08,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:08,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239432741] [2024-11-28 04:03:08,385 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:03:08,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254809041] [2024-11-28 04:03:08,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254809041] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:03:08,385 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:03:08,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-11-28 04:03:08,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203629599] [2024-11-28 04:03:08,386 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 04:03:08,386 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-28 04:03:08,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:08,386 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-28 04:03:08,387 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=318, Unknown=3, NotChecked=0, Total=380 [2024-11-28 04:03:08,387 INFO L87 Difference]: Start difference. First operand 523 states and 655 transitions. Second operand has 17 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 4 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-28 04:03:14,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:03:20,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:20,394 INFO L93 Difference]: Finished difference Result 626 states and 693 transitions. [2024-11-28 04:03:20,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-28 04:03:20,394 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 4 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 4 states have call successors, (7) Word has length 98 [2024-11-28 04:03:20,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:20,396 INFO L225 Difference]: With dead ends: 626 [2024-11-28 04:03:20,396 INFO L226 Difference]: Without dead ends: 625 [2024-11-28 04:03:20,397 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 76 SyntacticMatches, 8 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 328 ImplicationChecksByTransitivity, 40.1s TimeCoverageRelationStatistics Valid=239, Invalid=1317, Unknown=4, NotChecked=0, Total=1560 [2024-11-28 04:03:20,397 INFO L435 NwaCegarLoop]: 251 mSDtfsCounter, 774 mSDsluCounter, 2299 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 54 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 2550 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:20,397 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [779 Valid, 2550 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 820 Invalid, 3 Unknown, 0 Unchecked, 6.2s Time] [2024-11-28 04:03:20,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2024-11-28 04:03:20,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 531. [2024-11-28 04:03:20,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 361 states have (on average 1.6565096952908587) internal successors, (598), 494 states have internal predecessors, (598), 28 states have call successors, (28), 7 states have call predecessors, (28), 10 states have return successors, (34), 29 states have call predecessors, (34), 28 states have call successors, (34) [2024-11-28 04:03:20,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 660 transitions. [2024-11-28 04:03:20,435 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 660 transitions. Word has length 98 [2024-11-28 04:03:20,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:20,435 INFO L471 AbstractCegarLoop]: Abstraction has 531 states and 660 transitions. [2024-11-28 04:03:20,436 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 5.0) internal successors, (75), 15 states have internal predecessors, (75), 4 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (7), 2 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-28 04:03:20,436 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 660 transitions. [2024-11-28 04:03:20,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-28 04:03:20,437 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:20,437 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:20,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-28 04:03:20,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-28 04:03:20,641 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-28 04:03:20,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:20,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1010751537, now seen corresponding path program 1 times [2024-11-28 04:03:20,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:20,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918346953] [2024-11-28 04:03:20,642 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:20,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:20,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:03:20,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [881726682] [2024-11-28 04:03:20,671 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:20,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:20,671 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:20,673 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:03:20,676 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 04:03:20,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:20,834 INFO L256 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-28 04:03:20,838 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:03:20,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:03:20,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:03:20,887 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 04:03:24,221 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:03:24,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 69 [2024-11-28 04:03:24,332 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-28 04:03:24,332 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:03:24,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:24,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918346953] [2024-11-28 04:03:24,332 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:03:24,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881726682] [2024-11-28 04:03:24,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881726682] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:24,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:03:24,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-28 04:03:24,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703028436] [2024-11-28 04:03:24,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:24,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-28 04:03:24,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:24,333 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-28 04:03:24,334 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:03:24,334 INFO L87 Difference]: Start difference. First operand 531 states and 660 transitions. Second operand has 12 states, 10 states have (on average 7.3) internal successors, (73), 11 states have internal predecessors, (73), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 04:03:25,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:25,730 INFO L93 Difference]: Finished difference Result 625 states and 692 transitions. [2024-11-28 04:03:25,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 04:03:25,730 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 7.3) internal successors, (73), 11 states have internal predecessors, (73), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) Word has length 99 [2024-11-28 04:03:25,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:25,732 INFO L225 Difference]: With dead ends: 625 [2024-11-28 04:03:25,732 INFO L226 Difference]: Without dead ends: 624 [2024-11-28 04:03:25,733 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 87 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2024-11-28 04:03:25,733 INFO L435 NwaCegarLoop]: 269 mSDtfsCounter, 610 mSDsluCounter, 1976 mSDsCounter, 0 mSdLazyCounter, 495 mSolverCounterSat, 24 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 619 SdHoareTripleChecker+Valid, 2245 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 495 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:25,733 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [619 Valid, 2245 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 495 Invalid, 2 Unknown, 0 Unchecked, 1.1s Time] [2024-11-28 04:03:25,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2024-11-28 04:03:25,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 531. [2024-11-28 04:03:25,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 361 states have (on average 1.6537396121883656) internal successors, (597), 494 states have internal predecessors, (597), 28 states have call successors, (28), 7 states have call predecessors, (28), 10 states have return successors, (34), 29 states have call predecessors, (34), 28 states have call successors, (34) [2024-11-28 04:03:25,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 659 transitions. [2024-11-28 04:03:25,778 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 659 transitions. Word has length 99 [2024-11-28 04:03:25,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:25,778 INFO L471 AbstractCegarLoop]: Abstraction has 531 states and 659 transitions. [2024-11-28 04:03:25,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 7.3) internal successors, (73), 11 states have internal predecessors, (73), 3 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 04:03:25,779 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 659 transitions. [2024-11-28 04:03:25,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-28 04:03:25,780 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:25,780 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:25,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-28 04:03:25,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-28 04:03:25,984 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-28 04:03:25,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:25,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1268526390, now seen corresponding path program 1 times [2024-11-28 04:03:25,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:25,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861299329] [2024-11-28 04:03:25,986 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:25,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:26,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:03:26,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [949230762] [2024-11-28 04:03:26,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:26,018 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:26,018 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:26,020 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:03:26,023 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 04:03:26,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:26,250 INFO L256 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 04:03:26,257 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:03:26,304 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:03:26,528 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-28 04:03:26,528 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:03:26,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:26,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861299329] [2024-11-28 04:03:26,528 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:03:26,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [949230762] [2024-11-28 04:03:26,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [949230762] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:26,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:03:26,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:03:26,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647519796] [2024-11-28 04:03:26,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:26,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:03:26,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:26,529 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:03:26,529 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:03:26,530 INFO L87 Difference]: Start difference. First operand 531 states and 659 transitions. Second operand has 6 states, 5 states have (on average 14.8) internal successors, (74), 6 states have internal predecessors, (74), 2 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 04:03:26,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:26,925 INFO L93 Difference]: Finished difference Result 624 states and 691 transitions. [2024-11-28 04:03:26,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:03:26,926 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.8) internal successors, (74), 6 states have internal predecessors, (74), 2 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 100 [2024-11-28 04:03:26,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:26,928 INFO L225 Difference]: With dead ends: 624 [2024-11-28 04:03:26,928 INFO L226 Difference]: Without dead ends: 622 [2024-11-28 04:03:26,929 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:03:26,930 INFO L435 NwaCegarLoop]: 281 mSDtfsCounter, 408 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 43 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 1091 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:26,930 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 1091 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 144 Invalid, 2 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:03:26,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2024-11-28 04:03:26,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 531. [2024-11-28 04:03:26,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 361 states have (on average 1.6481994459833795) internal successors, (595), 494 states have internal predecessors, (595), 28 states have call successors, (28), 7 states have call predecessors, (28), 10 states have return successors, (34), 29 states have call predecessors, (34), 28 states have call successors, (34) [2024-11-28 04:03:26,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 657 transitions. [2024-11-28 04:03:26,972 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 657 transitions. Word has length 100 [2024-11-28 04:03:26,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:26,973 INFO L471 AbstractCegarLoop]: Abstraction has 531 states and 657 transitions. [2024-11-28 04:03:26,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.8) internal successors, (74), 6 states have internal predecessors, (74), 2 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 04:03:26,973 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 657 transitions. [2024-11-28 04:03:26,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-28 04:03:26,973 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:26,974 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:26,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-28 04:03:27,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-28 04:03:27,177 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-28 04:03:27,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:27,178 INFO L85 PathProgramCache]: Analyzing trace with hash 716857260, now seen corresponding path program 1 times [2024-11-28 04:03:27,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:27,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1056797392] [2024-11-28 04:03:27,178 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:27,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:27,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:03:27,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1265047692] [2024-11-28 04:03:27,205 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:27,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:27,205 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:27,210 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:03:27,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 04:03:27,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:27,390 INFO L256 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-28 04:03:27,392 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:03:27,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:03:27,404 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:03:27,932 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-28 04:03:27,932 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:03:27,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:27,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1056797392] [2024-11-28 04:03:27,932 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:03:27,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1265047692] [2024-11-28 04:03:27,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1265047692] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:27,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:03:27,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:03:27,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507513094] [2024-11-28 04:03:27,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:27,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:03:27,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:27,934 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:03:27,934 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:03:27,934 INFO L87 Difference]: Start difference. First operand 531 states and 657 transitions. Second operand has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 7 states have internal predecessors, (76), 2 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 04:03:28,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:28,455 INFO L93 Difference]: Finished difference Result 622 states and 689 transitions. [2024-11-28 04:03:28,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:03:28,455 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 7 states have internal predecessors, (76), 2 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 102 [2024-11-28 04:03:28,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:28,457 INFO L225 Difference]: With dead ends: 622 [2024-11-28 04:03:28,458 INFO L226 Difference]: Without dead ends: 620 [2024-11-28 04:03:28,458 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 96 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:03:28,458 INFO L435 NwaCegarLoop]: 268 mSDtfsCounter, 289 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 40 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 1322 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:28,458 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 1322 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 246 Invalid, 2 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:03:28,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2024-11-28 04:03:28,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 531. [2024-11-28 04:03:28,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 361 states have (on average 1.6426592797783934) internal successors, (593), 494 states have internal predecessors, (593), 28 states have call successors, (28), 7 states have call predecessors, (28), 10 states have return successors, (34), 29 states have call predecessors, (34), 28 states have call successors, (34) [2024-11-28 04:03:28,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 655 transitions. [2024-11-28 04:03:28,501 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 655 transitions. Word has length 102 [2024-11-28 04:03:28,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:28,501 INFO L471 AbstractCegarLoop]: Abstraction has 531 states and 655 transitions. [2024-11-28 04:03:28,502 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 7 states have internal predecessors, (76), 2 states have call successors, (7), 3 states have call predecessors, (7), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 04:03:28,502 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 655 transitions. [2024-11-28 04:03:28,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-28 04:03:28,502 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:28,502 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:28,512 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-28 04:03:28,703 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-28 04:03:28,703 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting func_to_recursive_line_29_to_41_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-28 04:03:28,703 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:28,703 INFO L85 PathProgramCache]: Analyzing trace with hash 252653036, now seen corresponding path program 1 times [2024-11-28 04:03:28,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:28,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624527090] [2024-11-28 04:03:28,704 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:28,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:28,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:28,842 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-28 04:03:28,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:28,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624527090] [2024-11-28 04:03:28,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624527090] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:28,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:03:28,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:03:28,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580368287] [2024-11-28 04:03:28,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:28,843 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:03:28,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:28,843 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:03:28,843 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:03:28,843 INFO L87 Difference]: Start difference. First operand 531 states and 655 transitions. Second operand has 6 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-28 04:03:29,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:29,208 INFO L93 Difference]: Finished difference Result 531 states and 655 transitions. [2024-11-28 04:03:29,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:03:29,209 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 104 [2024-11-28 04:03:29,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:29,211 INFO L225 Difference]: With dead ends: 531 [2024-11-28 04:03:29,211 INFO L226 Difference]: Without dead ends: 530 [2024-11-28 04:03:29,212 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:03:29,213 INFO L435 NwaCegarLoop]: 287 mSDtfsCounter, 105 mSDsluCounter, 1024 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 1311 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:29,214 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 1311 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:03:29,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2024-11-28 04:03:29,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 530. [2024-11-28 04:03:29,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 361 states have (on average 1.6371191135734071) internal successors, (591), 493 states have internal predecessors, (591), 28 states have call successors, (28), 7 states have call predecessors, (28), 10 states have return successors, (34), 29 states have call predecessors, (34), 28 states have call successors, (34) [2024-11-28 04:03:29,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 653 transitions. [2024-11-28 04:03:29,254 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 653 transitions. Word has length 104 [2024-11-28 04:03:29,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:29,255 INFO L471 AbstractCegarLoop]: Abstraction has 530 states and 653 transitions. [2024-11-28 04:03:29,255 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-28 04:03:29,255 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 653 transitions. [2024-11-28 04:03:29,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-28 04:03:29,256 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:29,256 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:29,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-28 04:03:29,258 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-28 04:03:29,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:29,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1705065614, now seen corresponding path program 1 times [2024-11-28 04:03:29,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:29,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97513322] [2024-11-28 04:03:29,259 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:29,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:29,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:29,503 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-28 04:03:29,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:29,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97513322] [2024-11-28 04:03:29,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97513322] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:29,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:03:29,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:03:29,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360760373] [2024-11-28 04:03:29,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:29,505 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:03:29,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:29,506 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:03:29,506 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:03:29,506 INFO L87 Difference]: Start difference. First operand 530 states and 653 transitions. Second operand has 5 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 04:03:29,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:29,953 INFO L93 Difference]: Finished difference Result 591 states and 658 transitions. [2024-11-28 04:03:29,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:03:29,954 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 104 [2024-11-28 04:03:29,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:29,956 INFO L225 Difference]: With dead ends: 591 [2024-11-28 04:03:29,956 INFO L226 Difference]: Without dead ends: 589 [2024-11-28 04:03:29,956 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:03:29,958 INFO L435 NwaCegarLoop]: 283 mSDtfsCounter, 173 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 1008 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:29,958 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 1008 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:03:29,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2024-11-28 04:03:30,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 530. [2024-11-28 04:03:30,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 361 states have (on average 1.631578947368421) internal successors, (589), 493 states have internal predecessors, (589), 28 states have call successors, (28), 7 states have call predecessors, (28), 10 states have return successors, (34), 29 states have call predecessors, (34), 28 states have call successors, (34) [2024-11-28 04:03:30,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 651 transitions. [2024-11-28 04:03:30,005 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 651 transitions. Word has length 104 [2024-11-28 04:03:30,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:30,005 INFO L471 AbstractCegarLoop]: Abstraction has 530 states and 651 transitions. [2024-11-28 04:03:30,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 04:03:30,006 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 651 transitions. [2024-11-28 04:03:30,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-28 04:03:30,006 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:30,007 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:30,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-11-28 04:03:30,007 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting func_to_recursive_line_29_to_41_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-28 04:03:30,007 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:30,008 INFO L85 PathProgramCache]: Analyzing trace with hash -757690429, now seen corresponding path program 1 times [2024-11-28 04:03:30,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:30,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360602056] [2024-11-28 04:03:30,008 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:30,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:30,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:30,181 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-28 04:03:30,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:30,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360602056] [2024-11-28 04:03:30,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360602056] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:30,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:03:30,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:03:30,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81548859] [2024-11-28 04:03:30,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:30,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:03:30,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:30,186 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:03:30,187 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:03:30,187 INFO L87 Difference]: Start difference. First operand 530 states and 651 transitions. Second operand has 6 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-28 04:03:30,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:30,467 INFO L93 Difference]: Finished difference Result 530 states and 651 transitions. [2024-11-28 04:03:30,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:03:30,468 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 105 [2024-11-28 04:03:30,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:30,470 INFO L225 Difference]: With dead ends: 530 [2024-11-28 04:03:30,470 INFO L226 Difference]: Without dead ends: 529 [2024-11-28 04:03:30,470 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:03:30,471 INFO L435 NwaCegarLoop]: 287 mSDtfsCounter, 102 mSDsluCounter, 1024 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 1311 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:30,471 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 1311 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:03:30,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2024-11-28 04:03:30,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 529. [2024-11-28 04:03:30,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 361 states have (on average 1.626038781163435) internal successors, (587), 492 states have internal predecessors, (587), 28 states have call successors, (28), 7 states have call predecessors, (28), 10 states have return successors, (34), 29 states have call predecessors, (34), 28 states have call successors, (34) [2024-11-28 04:03:30,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 649 transitions. [2024-11-28 04:03:30,519 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 649 transitions. Word has length 105 [2024-11-28 04:03:30,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:30,520 INFO L471 AbstractCegarLoop]: Abstraction has 529 states and 649 transitions. [2024-11-28 04:03:30,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 18.75) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-28 04:03:30,520 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 649 transitions. [2024-11-28 04:03:30,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-28 04:03:30,521 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:30,521 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:30,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-11-28 04:03:30,521 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting func_to_recursive_line_29_to_41_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-28 04:03:30,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:30,522 INFO L85 PathProgramCache]: Analyzing trace with hash -2013566770, now seen corresponding path program 1 times [2024-11-28 04:03:30,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:30,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263157486] [2024-11-28 04:03:30,522 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:30,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:30,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:03:30,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1913002694] [2024-11-28 04:03:30,558 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:30,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:30,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:30,560 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:03:30,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 04:03:30,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:30,762 INFO L256 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-28 04:03:30,765 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:03:30,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:03:31,400 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-28 04:03:31,662 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-28 04:03:31,700 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 24 proven. 23 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 04:03:31,700 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:03:32,474 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2024-11-28 04:03:32,587 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-28 04:03:32,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:32,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263157486] [2024-11-28 04:03:32,588 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:03:32,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913002694] [2024-11-28 04:03:32,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913002694] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:03:32,588 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:03:32,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 26 [2024-11-28 04:03:32,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320064278] [2024-11-28 04:03:32,588 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:03:32,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-28 04:03:32,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:32,589 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-28 04:03:32,589 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=616, Unknown=0, NotChecked=0, Total=702 [2024-11-28 04:03:32,589 INFO L87 Difference]: Start difference. First operand 529 states and 649 transitions. Second operand has 27 states, 24 states have (on average 6.75) internal successors, (162), 23 states have internal predecessors, (162), 7 states have call successors, (16), 7 states have call predecessors, (16), 5 states have return successors, (12), 3 states have call predecessors, (12), 5 states have call successors, (12) [2024-11-28 04:03:36,616 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:03:40,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.50s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2024-11-28 04:03:43,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:43,523 INFO L93 Difference]: Finished difference Result 616 states and 681 transitions. [2024-11-28 04:03:43,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-28 04:03:43,524 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 24 states have (on average 6.75) internal successors, (162), 23 states have internal predecessors, (162), 7 states have call successors, (16), 7 states have call predecessors, (16), 5 states have return successors, (12), 3 states have call predecessors, (12), 5 states have call successors, (12) Word has length 106 [2024-11-28 04:03:43,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:43,526 INFO L225 Difference]: With dead ends: 616 [2024-11-28 04:03:43,526 INFO L226 Difference]: Without dead ends: 615 [2024-11-28 04:03:43,527 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 175 SyntacticMatches, 10 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=280, Invalid=1700, Unknown=0, NotChecked=0, Total=1980 [2024-11-28 04:03:43,527 INFO L435 NwaCegarLoop]: 474 mSDtfsCounter, 1271 mSDsluCounter, 7055 mSDsCounter, 0 mSdLazyCounter, 1665 mSolverCounterSat, 74 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1276 SdHoareTripleChecker+Valid, 7529 SdHoareTripleChecker+Invalid, 1741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1665 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:43,528 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1276 Valid, 7529 Invalid, 1741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1665 Invalid, 2 Unknown, 0 Unchecked, 10.1s Time] [2024-11-28 04:03:43,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2024-11-28 04:03:43,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 528. [2024-11-28 04:03:43,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 361 states have (on average 1.6204986149584488) internal successors, (585), 491 states have internal predecessors, (585), 28 states have call successors, (28), 7 states have call predecessors, (28), 10 states have return successors, (34), 29 states have call predecessors, (34), 28 states have call successors, (34) [2024-11-28 04:03:43,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 647 transitions. [2024-11-28 04:03:43,569 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 647 transitions. Word has length 106 [2024-11-28 04:03:43,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:43,569 INFO L471 AbstractCegarLoop]: Abstraction has 528 states and 647 transitions. [2024-11-28 04:03:43,570 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 24 states have (on average 6.75) internal successors, (162), 23 states have internal predecessors, (162), 7 states have call successors, (16), 7 states have call predecessors, (16), 5 states have return successors, (12), 3 states have call predecessors, (12), 5 states have call successors, (12) [2024-11-28 04:03:43,570 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 647 transitions. [2024-11-28 04:03:43,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2024-11-28 04:03:43,571 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:43,571 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:43,582 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-28 04:03:43,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:43,775 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-28 04:03:43,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:43,776 INFO L85 PathProgramCache]: Analyzing trace with hash -2109445776, now seen corresponding path program 1 times [2024-11-28 04:03:43,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:43,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509922145] [2024-11-28 04:03:43,776 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:43,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:43,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:44,007 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-28 04:03:44,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:44,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509922145] [2024-11-28 04:03:44,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509922145] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:44,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:03:44,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:03:44,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718824795] [2024-11-28 04:03:44,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:44,009 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:03:44,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:44,010 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:03:44,010 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:03:44,010 INFO L87 Difference]: Start difference. First operand 528 states and 647 transitions. Second operand has 6 states, 5 states have (on average 15.4) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 04:03:44,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:44,539 INFO L93 Difference]: Finished difference Result 587 states and 652 transitions. [2024-11-28 04:03:44,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:03:44,540 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 15.4) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 106 [2024-11-28 04:03:44,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:44,541 INFO L225 Difference]: With dead ends: 587 [2024-11-28 04:03:44,541 INFO L226 Difference]: Without dead ends: 586 [2024-11-28 04:03:44,542 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:03:44,542 INFO L435 NwaCegarLoop]: 282 mSDtfsCounter, 168 mSDsluCounter, 965 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 1247 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:44,542 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 1247 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:03:44,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2024-11-28 04:03:44,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 528. [2024-11-28 04:03:44,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 361 states have (on average 1.6177285318559558) internal successors, (584), 491 states have internal predecessors, (584), 28 states have call successors, (28), 7 states have call predecessors, (28), 10 states have return successors, (34), 29 states have call predecessors, (34), 28 states have call successors, (34) [2024-11-28 04:03:44,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 646 transitions. [2024-11-28 04:03:44,593 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 646 transitions. Word has length 106 [2024-11-28 04:03:44,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:44,594 INFO L471 AbstractCegarLoop]: Abstraction has 528 states and 646 transitions. [2024-11-28 04:03:44,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 15.4) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 04:03:44,594 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 646 transitions. [2024-11-28 04:03:44,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-28 04:03:44,595 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:44,595 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:44,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-11-28 04:03:44,596 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting func_to_recursive_line_29_to_41_0Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-28 04:03:44,596 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:44,596 INFO L85 PathProgramCache]: Analyzing trace with hash 2003939621, now seen corresponding path program 1 times [2024-11-28 04:03:44,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:44,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724787617] [2024-11-28 04:03:44,597 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:44,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:44,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 04:03:44,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1583672891] [2024-11-28 04:03:44,677 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:44,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:03:44,678 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:03:44,687 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:03:44,688 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 04:03:44,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:44,890 INFO L256 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-28 04:03:44,894 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:03:44,898 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:03:44,905 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 04:03:45,537 INFO L349 Elim1Store]: treesize reduction 29, result has 34.1 percent of original size [2024-11-28 04:03:45,537 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 29 [2024-11-28 04:03:45,719 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 6 proven. 44 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-28 04:03:45,719 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:03:45,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:45,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724787617] [2024-11-28 04:03:45,854 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 04:03:45,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583672891] [2024-11-28 04:03:45,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583672891] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:03:45,854 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:03:45,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2024-11-28 04:03:45,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188456025] [2024-11-28 04:03:45,854 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-28 04:03:45,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 04:03:45,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:45,857 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 04:03:45,858 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2024-11-28 04:03:45,858 INFO L87 Difference]: Start difference. First operand 528 states and 646 transitions. Second operand has 16 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-28 04:03:47,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:47,051 INFO L93 Difference]: Finished difference Result 843 states and 870 transitions. [2024-11-28 04:03:47,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 04:03:47,052 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Word has length 107 [2024-11-28 04:03:47,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:47,055 INFO L225 Difference]: With dead ends: 843 [2024-11-28 04:03:47,055 INFO L226 Difference]: Without dead ends: 842 [2024-11-28 04:03:47,055 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 90 SyntacticMatches, 5 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=122, Invalid=528, Unknown=0, NotChecked=0, Total=650 [2024-11-28 04:03:47,056 INFO L435 NwaCegarLoop]: 491 mSDtfsCounter, 733 mSDsluCounter, 3968 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 4459 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:47,056 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [738 Valid, 4459 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 795 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-28 04:03:47,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2024-11-28 04:03:47,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 614. [2024-11-28 04:03:47,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 440 states have (on average 1.6568181818181817) internal successors, (729), 570 states have internal predecessors, (729), 33 states have call successors, (33), 9 states have call predecessors, (33), 12 states have return successors, (39), 34 states have call predecessors, (39), 33 states have call successors, (39) [2024-11-28 04:03:47,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 801 transitions. [2024-11-28 04:03:47,105 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 801 transitions. Word has length 107 [2024-11-28 04:03:47,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:47,105 INFO L471 AbstractCegarLoop]: Abstraction has 614 states and 801 transitions. [2024-11-28 04:03:47,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 6.0) internal successors, (84), 14 states have internal predecessors, (84), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-28 04:03:47,106 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 801 transitions. [2024-11-28 04:03:47,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-28 04:03:47,106 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:47,106 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:47,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-28 04:03:47,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_96e91c43-2725-4974-a3b1-a3cf55901f72/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2024-11-28 04:03:47,307 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-28 04:03:47,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:47,308 INFO L85 PathProgramCache]: Analyzing trace with hash -968309417, now seen corresponding path program 1 times [2024-11-28 04:03:47,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:47,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156773915] [2024-11-28 04:03:47,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:47,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:47,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:47,586 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-28 04:03:47,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:47,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156773915] [2024-11-28 04:03:47,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156773915] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:47,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:03:47,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:03:47,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006177972] [2024-11-28 04:03:47,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:47,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:03:47,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:47,588 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:03:47,588 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:03:47,588 INFO L87 Difference]: Start difference. First operand 614 states and 801 transitions. Second operand has 5 states, 4 states have (on average 19.5) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 04:03:47,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:47,998 INFO L93 Difference]: Finished difference Result 672 states and 806 transitions. [2024-11-28 04:03:47,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:03:47,999 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 19.5) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 107 [2024-11-28 04:03:47,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:48,001 INFO L225 Difference]: With dead ends: 672 [2024-11-28 04:03:48,002 INFO L226 Difference]: Without dead ends: 671 [2024-11-28 04:03:48,002 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:03:48,002 INFO L435 NwaCegarLoop]: 283 mSDtfsCounter, 166 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 993 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:48,003 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 993 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:03:48,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2024-11-28 04:03:48,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 614. [2024-11-28 04:03:48,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 614 states, 440 states have (on average 1.6545454545454545) internal successors, (728), 570 states have internal predecessors, (728), 33 states have call successors, (33), 9 states have call predecessors, (33), 12 states have return successors, (39), 34 states have call predecessors, (39), 33 states have call successors, (39) [2024-11-28 04:03:48,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 800 transitions. [2024-11-28 04:03:48,058 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 800 transitions. Word has length 107 [2024-11-28 04:03:48,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:48,058 INFO L471 AbstractCegarLoop]: Abstraction has 614 states and 800 transitions. [2024-11-28 04:03:48,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 19.5) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 04:03:48,058 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 800 transitions. [2024-11-28 04:03:48,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-28 04:03:48,059 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:48,059 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:48,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-11-28 04:03:48,059 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting func_to_recursive_line_29_to_41_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-28 04:03:48,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:48,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1992586160, now seen corresponding path program 1 times [2024-11-28 04:03:48,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:48,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660496353] [2024-11-28 04:03:48,060 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:48,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:48,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:48,202 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-28 04:03:48,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:48,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660496353] [2024-11-28 04:03:48,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660496353] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:48,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:03:48,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:03:48,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27099454] [2024-11-28 04:03:48,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:48,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:03:48,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:48,204 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:03:48,204 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:03:48,204 INFO L87 Difference]: Start difference. First operand 614 states and 800 transitions. Second operand has 6 states, 5 states have (on average 15.6) internal successors, (78), 6 states have internal predecessors, (78), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-28 04:03:48,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:48,432 INFO L93 Difference]: Finished difference Result 614 states and 800 transitions. [2024-11-28 04:03:48,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:03:48,432 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 15.6) internal successors, (78), 6 states have internal predecessors, (78), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 108 [2024-11-28 04:03:48,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:48,435 INFO L225 Difference]: With dead ends: 614 [2024-11-28 04:03:48,435 INFO L226 Difference]: Without dead ends: 613 [2024-11-28 04:03:48,436 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:03:48,436 INFO L435 NwaCegarLoop]: 286 mSDtfsCounter, 92 mSDsluCounter, 1025 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 1311 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:48,436 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 1311 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:03:48,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2024-11-28 04:03:48,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 613. [2024-11-28 04:03:48,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 613 states, 440 states have (on average 1.65) internal successors, (726), 569 states have internal predecessors, (726), 33 states have call successors, (33), 9 states have call predecessors, (33), 12 states have return successors, (39), 34 states have call predecessors, (39), 33 states have call successors, (39) [2024-11-28 04:03:48,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 613 states to 613 states and 798 transitions. [2024-11-28 04:03:48,479 INFO L78 Accepts]: Start accepts. Automaton has 613 states and 798 transitions. Word has length 108 [2024-11-28 04:03:48,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:48,479 INFO L471 AbstractCegarLoop]: Abstraction has 613 states and 798 transitions. [2024-11-28 04:03:48,479 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 15.6) internal successors, (78), 6 states have internal predecessors, (78), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-28 04:03:48,479 INFO L276 IsEmpty]: Start isEmpty. Operand 613 states and 798 transitions. [2024-11-28 04:03:48,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-28 04:03:48,480 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:48,480 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:48,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-11-28 04:03:48,480 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting func_to_recursive_line_29_to_41_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-28 04:03:48,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:48,481 INFO L85 PathProgramCache]: Analyzing trace with hash 1640628871, now seen corresponding path program 1 times [2024-11-28 04:03:48,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:48,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151922780] [2024-11-28 04:03:48,481 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:48,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:48,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:03:48,638 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-28 04:03:48,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:03:48,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151922780] [2024-11-28 04:03:48,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151922780] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:03:48,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:03:48,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:03:48,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695033018] [2024-11-28 04:03:48,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:03:48,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:03:48,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:03:48,640 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:03:48,640 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:03:48,640 INFO L87 Difference]: Start difference. First operand 613 states and 798 transitions. Second operand has 6 states, 4 states have (on average 19.75) internal successors, (79), 6 states have internal predecessors, (79), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-28 04:03:48,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:03:48,908 INFO L93 Difference]: Finished difference Result 613 states and 798 transitions. [2024-11-28 04:03:48,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:03:48,908 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 19.75) internal successors, (79), 6 states have internal predecessors, (79), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 109 [2024-11-28 04:03:48,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:03:48,915 INFO L225 Difference]: With dead ends: 613 [2024-11-28 04:03:48,915 INFO L226 Difference]: Without dead ends: 612 [2024-11-28 04:03:48,915 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:03:48,915 INFO L435 NwaCegarLoop]: 286 mSDtfsCounter, 89 mSDsluCounter, 1025 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 1311 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:03:48,916 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 1311 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:03:48,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2024-11-28 04:03:48,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 612. [2024-11-28 04:03:48,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 440 states have (on average 1.6454545454545455) internal successors, (724), 568 states have internal predecessors, (724), 33 states have call successors, (33), 9 states have call predecessors, (33), 12 states have return successors, (39), 34 states have call predecessors, (39), 33 states have call successors, (39) [2024-11-28 04:03:48,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 796 transitions. [2024-11-28 04:03:48,977 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 796 transitions. Word has length 109 [2024-11-28 04:03:48,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:03:48,979 INFO L471 AbstractCegarLoop]: Abstraction has 612 states and 796 transitions. [2024-11-28 04:03:48,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 19.75) internal successors, (79), 6 states have internal predecessors, (79), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-28 04:03:48,979 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 796 transitions. [2024-11-28 04:03:48,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-28 04:03:48,980 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:03:48,980 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:03:48,980 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-11-28 04:03:48,980 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting func_to_recursive_line_29_to_41_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_41_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_41_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 136 more)] === [2024-11-28 04:03:48,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:03:48,980 INFO L85 PathProgramCache]: Analyzing trace with hash -680112494, now seen corresponding path program 1 times [2024-11-28 04:03:48,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:03:48,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194549864] [2024-11-28 04:03:48,981 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:03:48,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:03:49,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat