./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_cohencu-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_cohencu-ll.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 0.2.5-dev-4a390ef-m [2024-10-24 20:43:16,656 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 20:43:16,720 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-24 20:43:16,724 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 20:43:16,724 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 20:43:16,758 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 20:43:16,758 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 20:43:16,759 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 20:43:16,759 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 20:43:16,760 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 20:43:16,760 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 20:43:16,761 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 20:43:16,761 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 20:43:16,761 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 20:43:16,761 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 20:43:16,763 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 20:43:16,763 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 20:43:16,764 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 20:43:16,764 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 20:43:16,764 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 20:43:16,764 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 20:43:16,768 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 20:43:16,768 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 20:43:16,768 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 20:43:16,768 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 20:43:16,768 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-24 20:43:16,769 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 20:43:16,769 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 20:43:16,769 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 20:43:16,769 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 20:43:16,769 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 20:43:16,769 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 20:43:16,769 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 20:43:16,770 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 20:43:16,770 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 20:43:16,770 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 20:43:16,770 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 20:43:16,770 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 20:43:16,770 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 20:43:16,771 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 20:43:16,771 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 20:43:16,771 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 20:43:16,771 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 20:43:16,772 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 20:43:16,772 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 260777f6a7be1f16cc330a008300c11ebdea8f1cf9d8e96a0325274fd8fd5b2a [2024-10-24 20:43:16,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 20:43:16,986 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 20:43:16,988 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 20:43:16,989 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 20:43:16,989 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 20:43:16,990 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_cohencu-ll.c [2024-10-24 20:43:18,254 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 20:43:18,400 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 20:43:18,400 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_cohencu-ll.c [2024-10-24 20:43:18,406 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86aaa357e/124eeb8140ad4598bfbed28ce677abbe/FLAG2e7037520 [2024-10-24 20:43:18,822 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86aaa357e/124eeb8140ad4598bfbed28ce677abbe [2024-10-24 20:43:18,824 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 20:43:18,825 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 20:43:18,826 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 20:43:18,826 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 20:43:18,830 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 20:43:18,831 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 08:43:18" (1/1) ... [2024-10-24 20:43:18,833 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3192edb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:43:18, skipping insertion in model container [2024-10-24 20:43:18,833 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 08:43:18" (1/1) ... [2024-10-24 20:43:18,853 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 20:43:19,002 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 20:43:19,010 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 20:43:19,037 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 20:43:19,049 INFO L204 MainTranslator]: Completed translation [2024-10-24 20:43:19,050 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:43:19 WrapperNode [2024-10-24 20:43:19,050 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 20:43:19,051 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 20:43:19,051 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 20:43:19,051 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 20:43:19,057 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:43:19" (1/1) ... [2024-10-24 20:43:19,068 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:43:19" (1/1) ... [2024-10-24 20:43:19,096 INFO L138 Inliner]: procedures = 16, calls = 100, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 196 [2024-10-24 20:43:19,096 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 20:43:19,097 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 20:43:19,097 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 20:43:19,097 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 20:43:19,105 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:43:19" (1/1) ... [2024-10-24 20:43:19,106 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:43:19" (1/1) ... [2024-10-24 20:43:19,109 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:43:19" (1/1) ... [2024-10-24 20:43:19,124 INFO L175 MemorySlicer]: Split 66 memory accesses to 6 slices as follows [2, 12, 15, 21, 11, 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]. [2024-10-24 20:43:19,125 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:43:19" (1/1) ... [2024-10-24 20:43:19,125 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:43:19" (1/1) ... [2024-10-24 20:43:19,135 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:43:19" (1/1) ... [2024-10-24 20:43:19,140 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:43:19" (1/1) ... [2024-10-24 20:43:19,142 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:43:19" (1/1) ... [2024-10-24 20:43:19,143 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:43:19" (1/1) ... [2024-10-24 20:43:19,149 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 20:43:19,150 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 20:43:19,150 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 20:43:19,150 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 20:43:19,151 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:43:19" (1/1) ... [2024-10-24 20:43:19,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 20:43:19,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 20:43:19,177 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 20:43:19,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 20:43:19,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 20:43:19,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 20:43:19,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 20:43:19,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-24 20:43:19,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-24 20:43:19,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-24 20:43:19,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-24 20:43:19,223 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-24 20:43:19,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 20:43:19,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 20:43:19,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-24 20:43:19,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-24 20:43:19,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-10-24 20:43:19,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-10-24 20:43:19,225 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_29_to_41_0 [2024-10-24 20:43:19,225 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_29_to_41_0 [2024-10-24 20:43:19,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 20:43:19,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 20:43:19,226 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 20:43:19,226 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 20:43:19,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-24 20:43:19,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-24 20:43:19,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-10-24 20:43:19,227 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-10-24 20:43:19,227 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-24 20:43:19,227 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-24 20:43:19,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-24 20:43:19,321 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 20:43:19,322 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 20:43:20,074 INFO L? ?]: Removed 357 outVars from TransFormulas that were not future-live. [2024-10-24 20:43:20,075 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 20:43:20,106 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 20:43:20,107 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-24 20:43:20,107 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 08:43:20 BoogieIcfgContainer [2024-10-24 20:43:20,107 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 20:43:20,109 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 20:43:20,109 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 20:43:20,111 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 20:43:20,111 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 08:43:18" (1/3) ... [2024-10-24 20:43:20,112 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@121b97d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 08:43:20, skipping insertion in model container [2024-10-24 20:43:20,112 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:43:19" (2/3) ... [2024-10-24 20:43:20,113 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@121b97d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 08:43:20, skipping insertion in model container [2024-10-24 20:43:20,113 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 08:43:20" (3/3) ... [2024-10-24 20:43:20,114 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_cohencu-ll.c [2024-10-24 20:43:20,126 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 20:43:20,126 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 138 error locations. [2024-10-24 20:43:20,179 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 20:43:20,183 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;@41c13c6e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 20:43:20,184 INFO L334 AbstractCegarLoop]: Starting to check reachability of 138 error locations. [2024-10-24 20:43:20,187 INFO L276 IsEmpty]: Start isEmpty. Operand has 312 states, 158 states have (on average 1.8924050632911393) internal successors, (299), 297 states have internal predecessors, (299), 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) [2024-10-24 20:43:20,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-10-24 20:43:20,191 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:43:20,191 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-10-24 20:43:20,192 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)] === [2024-10-24 20:43:20,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:43:20,195 INFO L85 PathProgramCache]: Analyzing trace with hash 370391600, now seen corresponding path program 1 times [2024-10-24 20:43:20,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:43:20,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453242278] [2024-10-24 20:43:20,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:43:20,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:43:20,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:20,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 20:43:20,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:43:20,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453242278] [2024-10-24 20:43:20,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453242278] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 20:43:20,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 20:43:20,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-24 20:43:20,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317874484] [2024-10-24 20:43:20,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 20:43:20,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 20:43:20,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:43:20,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 20:43:20,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 20:43:20,567 INFO L87 Difference]: Start difference. First operand has 312 states, 158 states have (on average 1.8924050632911393) internal successors, (299), 297 states have internal predecessors, (299), 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 1.0) internal successors, (4), 4 states have internal predecessors, (4), 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) [2024-10-24 20:43:20,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:43:20,798 INFO L93 Difference]: Finished difference Result 730 states and 784 transitions. [2024-10-24 20:43:20,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 20:43:20,802 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 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 5 [2024-10-24 20:43:20,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:43:20,811 INFO L225 Difference]: With dead ends: 730 [2024-10-24 20:43:20,812 INFO L226 Difference]: Without dead ends: 417 [2024-10-24 20:43:20,816 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-24 20:43:20,818 INFO L432 NwaCegarLoop]: 305 mSDtfsCounter, 205 mSDsluCounter, 1200 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 1505 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 20:43:20,818 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 1505 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 20:43:20,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2024-10-24 20:43:20,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 370. [2024-10-24 20:43:20,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 212 states have (on average 1.8537735849056605) internal successors, (393), 350 states have internal predecessors, (393), 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) [2024-10-24 20:43:20,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 428 transitions. [2024-10-24 20:43:20,877 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 428 transitions. Word has length 5 [2024-10-24 20:43:20,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:43:20,878 INFO L471 AbstractCegarLoop]: Abstraction has 370 states and 428 transitions. [2024-10-24 20:43:20,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 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) [2024-10-24 20:43:20,878 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 428 transitions. [2024-10-24 20:43:20,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-24 20:43:20,879 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:43:20,879 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 20:43:20,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 20:43:20,879 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)] === [2024-10-24 20:43:20,894 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:43:20,895 INFO L85 PathProgramCache]: Analyzing trace with hash 2009196607, now seen corresponding path program 1 times [2024-10-24 20:43:20,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:43:20,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014779430] [2024-10-24 20:43:20,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:43:20,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:43:20,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:21,055 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-24 20:43:21,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:21,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 20:43:21,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:43:21,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014779430] [2024-10-24 20:43:21,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014779430] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 20:43:21,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 20:43:21,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 20:43:21,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253500929] [2024-10-24 20:43:21,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 20:43:21,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 20:43:21,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:43:21,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 20:43:21,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 20:43:21,064 INFO L87 Difference]: Start difference. First operand 370 states and 428 transitions. Second operand has 6 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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) [2024-10-24 20:43:21,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:43:21,218 INFO L93 Difference]: Finished difference Result 417 states and 433 transitions. [2024-10-24 20:43:21,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 20:43:21,219 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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 15 [2024-10-24 20:43:21,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:43:21,221 INFO L225 Difference]: With dead ends: 417 [2024-10-24 20:43:21,222 INFO L226 Difference]: Without dead ends: 413 [2024-10-24 20:43:21,222 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-24 20:43:21,223 INFO L432 NwaCegarLoop]: 296 mSDtfsCounter, 200 mSDsluCounter, 1176 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 20:43:21,225 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 1472 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 20:43:21,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2024-10-24 20:43:21,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 370. [2024-10-24 20:43:21,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 212 states have (on average 1.8349056603773586) internal successors, (389), 350 states have internal predecessors, (389), 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) [2024-10-24 20:43:21,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 424 transitions. [2024-10-24 20:43:21,250 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 424 transitions. Word has length 15 [2024-10-24 20:43:21,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:43:21,251 INFO L471 AbstractCegarLoop]: Abstraction has 370 states and 424 transitions. [2024-10-24 20:43:21,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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) [2024-10-24 20:43:21,251 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 424 transitions. [2024-10-24 20:43:21,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-24 20:43:21,251 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:43:21,251 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 20:43:21,251 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-24 20:43:21,252 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)] === [2024-10-24 20:43:21,254 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:43:21,254 INFO L85 PathProgramCache]: Analyzing trace with hash 2015087747, now seen corresponding path program 1 times [2024-10-24 20:43:21,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:43:21,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685904353] [2024-10-24 20:43:21,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:43:21,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:43:21,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:21,399 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-24 20:43:21,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:21,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 20:43:21,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:43:21,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685904353] [2024-10-24 20:43:21,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685904353] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 20:43:21,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 20:43:21,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 20:43:21,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332664709] [2024-10-24 20:43:21,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 20:43:21,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 20:43:21,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:43:21,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 20:43:21,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 20:43:21,410 INFO L87 Difference]: Start difference. First operand 370 states and 424 transitions. Second operand has 6 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2024-10-24 20:43:21,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:43:21,607 INFO L93 Difference]: Finished difference Result 413 states and 429 transitions. [2024-10-24 20:43:21,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 20:43:21,608 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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 19 [2024-10-24 20:43:21,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:43:21,609 INFO L225 Difference]: With dead ends: 413 [2024-10-24 20:43:21,610 INFO L226 Difference]: Without dead ends: 411 [2024-10-24 20:43:21,610 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-24 20:43:21,611 INFO L432 NwaCegarLoop]: 296 mSDtfsCounter, 186 mSDsluCounter, 1178 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 1474 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 20:43:21,611 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 1474 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 20:43:21,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 411 states. [2024-10-24 20:43:21,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 411 to 370. [2024-10-24 20:43:21,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 212 states have (on average 1.8254716981132075) internal successors, (387), 350 states have internal predecessors, (387), 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) [2024-10-24 20:43:21,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 422 transitions. [2024-10-24 20:43:21,621 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 422 transitions. Word has length 19 [2024-10-24 20:43:21,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:43:21,621 INFO L471 AbstractCegarLoop]: Abstraction has 370 states and 422 transitions. [2024-10-24 20:43:21,622 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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) [2024-10-24 20:43:21,622 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 422 transitions. [2024-10-24 20:43:21,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-24 20:43:21,622 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:43:21,622 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 20:43:21,622 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-24 20:43:21,623 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)] === [2024-10-24 20:43:21,623 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:43:21,623 INFO L85 PathProgramCache]: Analyzing trace with hash -530923867, now seen corresponding path program 1 times [2024-10-24 20:43:21,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:43:21,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52294084] [2024-10-24 20:43:21,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:43:21,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:43:21,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:21,765 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-24 20:43:21,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:21,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 20:43:21,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:43:21,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52294084] [2024-10-24 20:43:21,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52294084] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 20:43:21,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 20:43:21,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 20:43:21,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894949349] [2024-10-24 20:43:21,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 20:43:21,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 20:43:21,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:43:21,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 20:43:21,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 20:43:21,773 INFO L87 Difference]: Start difference. First operand 370 states and 422 transitions. Second operand has 7 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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) [2024-10-24 20:43:21,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:43:21,946 INFO L93 Difference]: Finished difference Result 411 states and 427 transitions. [2024-10-24 20:43:21,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 20:43:21,946 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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 21 [2024-10-24 20:43:21,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:43:21,948 INFO L225 Difference]: With dead ends: 411 [2024-10-24 20:43:21,949 INFO L226 Difference]: Without dead ends: 409 [2024-10-24 20:43:21,949 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-24 20:43:21,952 INFO L432 NwaCegarLoop]: 296 mSDtfsCounter, 181 mSDsluCounter, 1454 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 1750 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 20:43:21,953 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 1750 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 20:43:21,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2024-10-24 20:43:21,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 370. [2024-10-24 20:43:21,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 212 states have (on average 1.8160377358490567) internal successors, (385), 350 states have internal predecessors, (385), 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) [2024-10-24 20:43:21,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 420 transitions. [2024-10-24 20:43:21,962 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 420 transitions. Word has length 21 [2024-10-24 20:43:21,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:43:21,962 INFO L471 AbstractCegarLoop]: Abstraction has 370 states and 420 transitions. [2024-10-24 20:43:21,962 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 3.6) internal successors, (18), 6 states have internal predecessors, (18), 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) [2024-10-24 20:43:21,962 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 420 transitions. [2024-10-24 20:43:21,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-10-24 20:43:21,963 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:43:21,963 INFO L215 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] [2024-10-24 20:43:21,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-24 20:43:21,963 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)] === [2024-10-24 20:43:21,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:43:21,963 INFO L85 PathProgramCache]: Analyzing trace with hash 721229366, now seen corresponding path program 1 times [2024-10-24 20:43:21,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:43:21,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442167414] [2024-10-24 20:43:21,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:43:21,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:43:21,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:22,077 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-24 20:43:22,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:22,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 20:43:22,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:43:22,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442167414] [2024-10-24 20:43:22,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442167414] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 20:43:22,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 20:43:22,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 20:43:22,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336381470] [2024-10-24 20:43:22,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 20:43:22,084 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 20:43:22,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:43:22,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 20:43:22,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 20:43:22,085 INFO L87 Difference]: Start difference. First operand 370 states and 420 transitions. Second operand has 6 states, 4 states have (on average 4.75) internal successors, (19), 5 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) [2024-10-24 20:43:22,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:43:22,216 INFO L93 Difference]: Finished difference Result 409 states and 425 transitions. [2024-10-24 20:43:22,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 20:43:22,216 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 4.75) internal successors, (19), 5 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 [2024-10-24 20:43:22,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:43:22,218 INFO L225 Difference]: With dead ends: 409 [2024-10-24 20:43:22,218 INFO L226 Difference]: Without dead ends: 407 [2024-10-24 20:43:22,218 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-24 20:43:22,219 INFO L432 NwaCegarLoop]: 300 mSDtfsCounter, 175 mSDsluCounter, 1176 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 1476 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 20:43:22,221 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 1476 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 20:43:22,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2024-10-24 20:43:22,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 370. [2024-10-24 20:43:22,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 212 states have (on average 1.8066037735849056) internal successors, (383), 350 states have internal predecessors, (383), 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) [2024-10-24 20:43:22,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 418 transitions. [2024-10-24 20:43:22,232 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 418 transitions. Word has length 22 [2024-10-24 20:43:22,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:43:22,233 INFO L471 AbstractCegarLoop]: Abstraction has 370 states and 418 transitions. [2024-10-24 20:43:22,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 4.75) internal successors, (19), 5 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) [2024-10-24 20:43:22,234 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 418 transitions. [2024-10-24 20:43:22,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-10-24 20:43:22,235 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:43:22,235 INFO L215 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] [2024-10-24 20:43:22,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-24 20:43:22,236 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)] === [2024-10-24 20:43:22,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:43:22,236 INFO L85 PathProgramCache]: Analyzing trace with hash 133250338, now seen corresponding path program 1 times [2024-10-24 20:43:22,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:43:22,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680008179] [2024-10-24 20:43:22,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:43:22,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:43:22,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 20:43:22,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1241127417] [2024-10-24 20:43:22,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:43:22,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:43:22,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 20:43:22,260 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 20:43:22,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 20:43:22,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:22,335 INFO L255 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-24 20:43:22,340 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 20:43:22,378 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 [2024-10-24 20:43:22,508 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 20:43:22,509 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 20:43:22,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:43:22,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680008179] [2024-10-24 20:43:22,510 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 20:43:22,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241127417] [2024-10-24 20:43:22,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241127417] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 20:43:22,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 20:43:22,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 20:43:22,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438602589] [2024-10-24 20:43:22,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 20:43:22,511 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 20:43:22,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:43:22,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 20:43:22,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-24 20:43:22,512 INFO L87 Difference]: Start difference. First operand 370 states and 418 transitions. Second operand has 7 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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) [2024-10-24 20:43:22,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:43:22,759 INFO L93 Difference]: Finished difference Result 589 states and 608 transitions. [2024-10-24 20:43:22,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 20:43:22,760 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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 31 [2024-10-24 20:43:22,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:43:22,762 INFO L225 Difference]: With dead ends: 589 [2024-10-24 20:43:22,762 INFO L226 Difference]: Without dead ends: 585 [2024-10-24 20:43:22,762 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-10-24 20:43:22,763 INFO L432 NwaCegarLoop]: 298 mSDtfsCounter, 344 mSDsluCounter, 1348 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 1646 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 20:43:22,763 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 1646 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 20:43:22,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2024-10-24 20:43:22,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 452. [2024-10-24 20:43:22,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 288 states have (on average 1.8159722222222223) internal successors, (523), 426 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) [2024-10-24 20:43:22,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 568 transitions. [2024-10-24 20:43:22,772 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 568 transitions. Word has length 31 [2024-10-24 20:43:22,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:43:22,773 INFO L471 AbstractCegarLoop]: Abstraction has 452 states and 568 transitions. [2024-10-24 20:43:22,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 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) [2024-10-24 20:43:22,773 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 568 transitions. [2024-10-24 20:43:22,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-10-24 20:43:22,774 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:43:22,774 INFO L215 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] [2024-10-24 20:43:22,788 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 20:43:22,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-10-24 20:43:22,975 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)] === [2024-10-24 20:43:22,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:43:22,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1037075609, now seen corresponding path program 1 times [2024-10-24 20:43:22,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:43:22,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312236301] [2024-10-24 20:43:22,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:43:22,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:43:22,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 20:43:22,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1188716803] [2024-10-24 20:43:22,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:43:22,996 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:43:22,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 20:43:22,998 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 20:43:23,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 20:43:23,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:23,079 INFO L255 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-10-24 20:43:23,081 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 20:43:23,092 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 [2024-10-24 20:43:23,095 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 [2024-10-24 20:43:23,293 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 [2024-10-24 20:43:23,298 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 [2024-10-24 20:43:23,307 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-24 20:43:23,307 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 20:43:23,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:43:23,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312236301] [2024-10-24 20:43:23,308 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 20:43:23,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188716803] [2024-10-24 20:43:23,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1188716803] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 20:43:23,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 20:43:23,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 20:43:23,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253674057] [2024-10-24 20:43:23,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 20:43:23,309 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 20:43:23,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:43:23,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 20:43:23,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-10-24 20:43:23,309 INFO L87 Difference]: Start difference. First operand 452 states and 568 transitions. Second operand has 7 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 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) [2024-10-24 20:43:27,463 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] [2024-10-24 20:43:31,474 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 20:43:35,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 20:43:39,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 20:43:43,611 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 20:43:43,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:43:43,662 INFO L93 Difference]: Finished difference Result 593 states and 612 transitions. [2024-10-24 20:43:43,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 20:43:43,662 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 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 41 [2024-10-24 20:43:43,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:43:43,664 INFO L225 Difference]: With dead ends: 593 [2024-10-24 20:43:43,664 INFO L226 Difference]: Without dead ends: 592 [2024-10-24 20:43:43,664 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 5 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-10-24 20:43:43,665 INFO L432 NwaCegarLoop]: 262 mSDtfsCounter, 361 mSDsluCounter, 1237 mSDsCounter, 0 mSdLazyCounter, 286 mSolverCounterSat, 16 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 1499 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 286 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.3s IncrementalHoareTripleChecker+Time [2024-10-24 20:43:43,665 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 1499 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 286 Invalid, 5 Unknown, 0 Unchecked, 20.3s Time] [2024-10-24 20:43:43,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2024-10-24 20:43:43,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 452. [2024-10-24 20:43:43,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 288 states have (on average 1.8125) internal successors, (522), 426 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) [2024-10-24 20:43:43,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 567 transitions. [2024-10-24 20:43:43,674 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 567 transitions. Word has length 41 [2024-10-24 20:43:43,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:43:43,675 INFO L471 AbstractCegarLoop]: Abstraction has 452 states and 567 transitions. [2024-10-24 20:43:43,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 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) [2024-10-24 20:43:43,675 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 567 transitions. [2024-10-24 20:43:43,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-10-24 20:43:43,675 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:43:43,676 INFO L215 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] [2024-10-24 20:43:43,690 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-24 20:43:43,876 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-24 20:43:43,877 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)] === [2024-10-24 20:43:43,877 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:43:43,877 INFO L85 PathProgramCache]: Analyzing trace with hash 2084572886, now seen corresponding path program 1 times [2024-10-24 20:43:43,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:43:43,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720519848] [2024-10-24 20:43:43,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:43:43,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:43:43,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 20:43:43,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1020872395] [2024-10-24 20:43:43,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:43:43,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:43:43,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 20:43:43,903 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 20:43:43,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 20:43:43,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:43,986 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-10-24 20:43:43,988 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 20:43:43,993 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 [2024-10-24 20:43:43,998 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 [2024-10-24 20:43:44,498 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 20:43:44,499 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 20:43:44,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:43:44,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720519848] [2024-10-24 20:43:44,831 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 20:43:44,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020872395] [2024-10-24 20:43:44,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1020872395] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 20:43:44,831 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-24 20:43:44,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2024-10-24 20:43:44,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906949851] [2024-10-24 20:43:44,832 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-24 20:43:44,832 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-24 20:43:44,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:43:44,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-24 20:43:44,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2024-10-24 20:43:44,832 INFO L87 Difference]: Start difference. First operand 452 states and 567 transitions. Second operand has 15 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 12 states have internal predecessors, (35), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 1 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-24 20:43:45,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:43:45,760 INFO L93 Difference]: Finished difference Result 592 states and 611 transitions. [2024-10-24 20:43:45,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 20:43:45,761 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 12 states have internal predecessors, (35), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 1 states have call predecessors, (3), 3 states have call successors, (3) Word has length 42 [2024-10-24 20:43:45,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:43:45,773 INFO L225 Difference]: With dead ends: 592 [2024-10-24 20:43:45,774 INFO L226 Difference]: Without dead ends: 591 [2024-10-24 20:43:45,774 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=126, Invalid=474, Unknown=0, NotChecked=0, Total=600 [2024-10-24 20:43:45,775 INFO L432 NwaCegarLoop]: 252 mSDtfsCounter, 445 mSDsluCounter, 3002 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 450 SdHoareTripleChecker+Valid, 3254 SdHoareTripleChecker+Invalid, 843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-24 20:43:45,775 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [450 Valid, 3254 Invalid, 843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 821 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-24 20:43:45,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 591 states. [2024-10-24 20:43:45,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 591 to 452. [2024-10-24 20:43:45,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 288 states have (on average 1.8090277777777777) internal successors, (521), 426 states have internal predecessors, (521), 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) [2024-10-24 20:43:45,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 566 transitions. [2024-10-24 20:43:45,787 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 566 transitions. Word has length 42 [2024-10-24 20:43:45,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:43:45,787 INFO L471 AbstractCegarLoop]: Abstraction has 452 states and 566 transitions. [2024-10-24 20:43:45,788 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.6923076923076925) internal successors, (35), 12 states have internal predecessors, (35), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 1 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-24 20:43:45,788 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 566 transitions. [2024-10-24 20:43:45,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-10-24 20:43:45,789 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:43:45,789 INFO L215 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] [2024-10-24 20:43:45,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-10-24 20:43:45,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:43:45,994 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)] === [2024-10-24 20:43:45,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:43:45,994 INFO L85 PathProgramCache]: Analyzing trace with hash 197250107, now seen corresponding path program 1 times [2024-10-24 20:43:45,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:43:45,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874687828] [2024-10-24 20:43:45,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:43:45,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:43:46,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:46,130 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-24 20:43:46,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:46,133 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-24 20:43:46,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:46,140 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-24 20:43:46,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:46,142 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-24 20:43:46,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:43:46,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874687828] [2024-10-24 20:43:46,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874687828] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 20:43:46,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 20:43:46,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 20:43:46,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291153528] [2024-10-24 20:43:46,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 20:43:46,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 20:43:46,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:43:46,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 20:43:46,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 20:43:46,144 INFO L87 Difference]: Start difference. First operand 452 states and 566 transitions. Second operand has 6 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 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) [2024-10-24 20:43:46,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:43:46,344 INFO L93 Difference]: Finished difference Result 559 states and 579 transitions. [2024-10-24 20:43:46,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 20:43:46,345 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 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 43 [2024-10-24 20:43:46,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:43:46,348 INFO L225 Difference]: With dead ends: 559 [2024-10-24 20:43:46,348 INFO L226 Difference]: Without dead ends: 557 [2024-10-24 20:43:46,348 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-24 20:43:46,348 INFO L432 NwaCegarLoop]: 288 mSDtfsCounter, 313 mSDsluCounter, 1136 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 1424 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 20:43:46,349 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 1424 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 20:43:46,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2024-10-24 20:43:46,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 452. [2024-10-24 20:43:46,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 288 states have (on average 1.8020833333333333) internal successors, (519), 426 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) [2024-10-24 20:43:46,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 564 transitions. [2024-10-24 20:43:46,361 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 564 transitions. Word has length 43 [2024-10-24 20:43:46,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:43:46,362 INFO L471 AbstractCegarLoop]: Abstraction has 452 states and 564 transitions. [2024-10-24 20:43:46,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 7.5) internal successors, (30), 5 states have internal predecessors, (30), 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) [2024-10-24 20:43:46,362 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 564 transitions. [2024-10-24 20:43:46,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-10-24 20:43:46,363 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:43:46,364 INFO L215 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] [2024-10-24 20:43:46,364 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-24 20:43:46,364 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)] === [2024-10-24 20:43:46,364 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:43:46,364 INFO L85 PathProgramCache]: Analyzing trace with hash 578794461, now seen corresponding path program 1 times [2024-10-24 20:43:46,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:43:46,365 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294909515] [2024-10-24 20:43:46,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:43:46,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:43:46,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:46,513 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-24 20:43:46,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:46,516 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-24 20:43:46,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:46,520 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-24 20:43:46,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:46,524 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-24 20:43:46,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:43:46,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294909515] [2024-10-24 20:43:46,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294909515] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 20:43:46,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 20:43:46,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 20:43:46,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35016198] [2024-10-24 20:43:46,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 20:43:46,527 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 20:43:46,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:43:46,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 20:43:46,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 20:43:46,529 INFO L87 Difference]: Start difference. First operand 452 states and 564 transitions. Second operand has 7 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 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) [2024-10-24 20:43:46,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:43:46,919 INFO L93 Difference]: Finished difference Result 557 states and 577 transitions. [2024-10-24 20:43:46,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 20:43:46,921 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 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 45 [2024-10-24 20:43:46,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:43:46,922 INFO L225 Difference]: With dead ends: 557 [2024-10-24 20:43:46,923 INFO L226 Difference]: Without dead ends: 556 [2024-10-24 20:43:46,923 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-24 20:43:46,923 INFO L432 NwaCegarLoop]: 289 mSDtfsCounter, 309 mSDsluCounter, 1398 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 1687 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-24 20:43:46,924 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 1687 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-24 20:43:46,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2024-10-24 20:43:46,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 452. [2024-10-24 20:43:46,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 288 states have (on average 1.7986111111111112) internal successors, (518), 426 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) [2024-10-24 20:43:46,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 563 transitions. [2024-10-24 20:43:46,933 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 563 transitions. Word has length 45 [2024-10-24 20:43:46,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:43:46,933 INFO L471 AbstractCegarLoop]: Abstraction has 452 states and 563 transitions. [2024-10-24 20:43:46,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 6.4) internal successors, (32), 6 states have internal predecessors, (32), 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) [2024-10-24 20:43:46,934 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 563 transitions. [2024-10-24 20:43:46,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-10-24 20:43:46,934 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:43:46,934 INFO L215 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] [2024-10-24 20:43:46,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-24 20:43:46,935 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)] === [2024-10-24 20:43:46,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:43:46,935 INFO L85 PathProgramCache]: Analyzing trace with hash 762759194, now seen corresponding path program 1 times [2024-10-24 20:43:46,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:43:46,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585215751] [2024-10-24 20:43:46,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:43:46,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:43:46,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:47,135 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-24 20:43:47,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:47,138 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-24 20:43:47,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:47,140 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-24 20:43:47,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:47,142 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-24 20:43:47,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:43:47,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585215751] [2024-10-24 20:43:47,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585215751] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 20:43:47,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 20:43:47,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 20:43:47,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287321097] [2024-10-24 20:43:47,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 20:43:47,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 20:43:47,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:43:47,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 20:43:47,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 20:43:47,144 INFO L87 Difference]: Start difference. First operand 452 states and 563 transitions. Second operand has 6 states, 4 states have (on average 8.25) internal successors, (33), 5 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) [2024-10-24 20:43:47,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:43:47,601 INFO L93 Difference]: Finished difference Result 556 states and 576 transitions. [2024-10-24 20:43:47,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 20:43:47,602 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 8.25) internal successors, (33), 5 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 [2024-10-24 20:43:47,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:43:47,603 INFO L225 Difference]: With dead ends: 556 [2024-10-24 20:43:47,603 INFO L226 Difference]: Without dead ends: 555 [2024-10-24 20:43:47,604 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-24 20:43:47,604 INFO L432 NwaCegarLoop]: 290 mSDtfsCounter, 306 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 1424 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-24 20:43:47,605 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 1424 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-24 20:43:47,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2024-10-24 20:43:47,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 452. [2024-10-24 20:43:47,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 288 states have (on average 1.7951388888888888) internal successors, (517), 426 states have internal predecessors, (517), 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) [2024-10-24 20:43:47,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 562 transitions. [2024-10-24 20:43:47,615 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 562 transitions. Word has length 46 [2024-10-24 20:43:47,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:43:47,616 INFO L471 AbstractCegarLoop]: Abstraction has 452 states and 562 transitions. [2024-10-24 20:43:47,616 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 8.25) internal successors, (33), 5 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) [2024-10-24 20:43:47,617 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 562 transitions. [2024-10-24 20:43:47,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-10-24 20:43:47,618 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:43:47,618 INFO L215 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] [2024-10-24 20:43:47,618 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-24 20:43:47,618 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)] === [2024-10-24 20:43:47,619 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:43:47,619 INFO L85 PathProgramCache]: Analyzing trace with hash -2124268673, now seen corresponding path program 1 times [2024-10-24 20:43:47,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:43:47,619 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048655118] [2024-10-24 20:43:47,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:43:47,619 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:43:47,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:47,729 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-24 20:43:47,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:47,732 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-24 20:43:47,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:47,735 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-24 20:43:47,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:47,737 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-24 20:43:47,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:43:47,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048655118] [2024-10-24 20:43:47,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048655118] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 20:43:47,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 20:43:47,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 20:43:47,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772014577] [2024-10-24 20:43:47,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 20:43:47,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 20:43:47,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:43:47,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 20:43:47,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 20:43:47,743 INFO L87 Difference]: Start difference. First operand 452 states and 562 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) [2024-10-24 20:43:47,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:43:47,895 INFO L93 Difference]: Finished difference Result 567 states and 587 transitions. [2024-10-24 20:43:47,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 20:43:47,896 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 [2024-10-24 20:43:47,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:43:47,898 INFO L225 Difference]: With dead ends: 567 [2024-10-24 20:43:47,898 INFO L226 Difference]: Without dead ends: 565 [2024-10-24 20:43:47,898 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-24 20:43:47,898 INFO L432 NwaCegarLoop]: 288 mSDtfsCounter, 311 mSDsluCounter, 1128 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 1416 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 20:43:47,899 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 1416 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 20:43:47,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2024-10-24 20:43:47,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 452. [2024-10-24 20:43:47,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 288 states have (on average 1.7881944444444444) internal successors, (515), 426 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) [2024-10-24 20:43:47,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 560 transitions. [2024-10-24 20:43:47,908 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 560 transitions. Word has length 47 [2024-10-24 20:43:47,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:43:47,908 INFO L471 AbstractCegarLoop]: Abstraction has 452 states and 560 transitions. [2024-10-24 20:43:47,908 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) [2024-10-24 20:43:47,908 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 560 transitions. [2024-10-24 20:43:47,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-10-24 20:43:47,909 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:43:47,909 INFO L215 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] [2024-10-24 20:43:47,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-24 20:43:47,909 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)] === [2024-10-24 20:43:47,909 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:43:47,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1312726239, now seen corresponding path program 1 times [2024-10-24 20:43:47,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:43:47,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818230305] [2024-10-24 20:43:47,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:43:47,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:43:47,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 20:43:47,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1978610293] [2024-10-24 20:43:47,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:43:47,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:43:47,924 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 20:43:47,925 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 20:43:47,926 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 20:43:48,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:48,017 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-10-24 20:43:48,020 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 20:43:48,023 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 [2024-10-24 20:43:48,027 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 [2024-10-24 20:43:48,682 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 20:43:48,682 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 20:43:49,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:43:49,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818230305] [2024-10-24 20:43:49,015 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 20:43:49,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978610293] [2024-10-24 20:43:49,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978610293] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 20:43:49,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-24 20:43:49,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2024-10-24 20:43:49,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082980813] [2024-10-24 20:43:49,016 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-24 20:43:49,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-10-24 20:43:49,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:43:49,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-10-24 20:43:49,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2024-10-24 20:43:49,017 INFO L87 Difference]: Start difference. First operand 452 states and 560 transitions. Second operand has 17 states, 15 states have (on average 2.6) internal successors, (39), 13 states have internal predecessors, (39), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-24 20:43:50,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:43:50,309 INFO L93 Difference]: Finished difference Result 585 states and 604 transitions. [2024-10-24 20:43:50,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-10-24 20:43:50,310 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 2.6) internal successors, (39), 13 states have internal predecessors, (39), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 49 [2024-10-24 20:43:50,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:43:50,312 INFO L225 Difference]: With dead ends: 585 [2024-10-24 20:43:50,312 INFO L226 Difference]: Without dead ends: 584 [2024-10-24 20:43:50,312 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=267, Invalid=1215, Unknown=0, NotChecked=0, Total=1482 [2024-10-24 20:43:50,313 INFO L432 NwaCegarLoop]: 249 mSDtfsCounter, 700 mSDsluCounter, 2645 mSDsCounter, 0 mSdLazyCounter, 856 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 2894 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 856 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-10-24 20:43:50,313 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 2894 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 856 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-10-24 20:43:50,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2024-10-24 20:43:50,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 452. [2024-10-24 20:43:50,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 288 states have (on average 1.7847222222222223) internal successors, (514), 426 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) [2024-10-24 20:43:50,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 559 transitions. [2024-10-24 20:43:50,324 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 559 transitions. Word has length 49 [2024-10-24 20:43:50,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:43:50,325 INFO L471 AbstractCegarLoop]: Abstraction has 452 states and 559 transitions. [2024-10-24 20:43:50,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 2.6) internal successors, (39), 13 states have internal predecessors, (39), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-10-24 20:43:50,325 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 559 transitions. [2024-10-24 20:43:50,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-10-24 20:43:50,325 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:43:50,326 INFO L215 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] [2024-10-24 20:43:50,339 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-24 20:43:50,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:43:50,530 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)] === [2024-10-24 20:43:50,530 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:43:50,530 INFO L85 PathProgramCache]: Analyzing trace with hash -2039807650, now seen corresponding path program 1 times [2024-10-24 20:43:50,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:43:50,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661902428] [2024-10-24 20:43:50,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:43:50,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:43:50,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:50,687 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-24 20:43:50,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:50,689 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-24 20:43:50,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:50,691 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-24 20:43:50,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:50,692 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-24 20:43:50,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:43:50,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661902428] [2024-10-24 20:43:50,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661902428] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 20:43:50,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 20:43:50,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 20:43:50,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470799276] [2024-10-24 20:43:50,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 20:43:50,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 20:43:50,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:43:50,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 20:43:50,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 20:43:50,694 INFO L87 Difference]: Start difference. First operand 452 states and 559 transitions. Second operand has 6 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 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) [2024-10-24 20:43:50,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:43:50,866 INFO L93 Difference]: Finished difference Result 564 states and 584 transitions. [2024-10-24 20:43:50,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 20:43:50,867 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 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 50 [2024-10-24 20:43:50,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:43:50,868 INFO L225 Difference]: With dead ends: 564 [2024-10-24 20:43:50,868 INFO L226 Difference]: Without dead ends: 563 [2024-10-24 20:43:50,869 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-24 20:43:50,869 INFO L432 NwaCegarLoop]: 290 mSDtfsCounter, 304 mSDsluCounter, 1119 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 1409 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 20:43:50,869 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 1409 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 20:43:50,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2024-10-24 20:43:50,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 452. [2024-10-24 20:43:50,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 288 states have (on average 1.78125) internal successors, (513), 426 states have internal predecessors, (513), 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) [2024-10-24 20:43:50,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 558 transitions. [2024-10-24 20:43:50,878 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 558 transitions. Word has length 50 [2024-10-24 20:43:50,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:43:50,879 INFO L471 AbstractCegarLoop]: Abstraction has 452 states and 558 transitions. [2024-10-24 20:43:50,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 9.25) internal successors, (37), 5 states have internal predecessors, (37), 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) [2024-10-24 20:43:50,879 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 558 transitions. [2024-10-24 20:43:50,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-10-24 20:43:50,879 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:43:50,879 INFO L215 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] [2024-10-24 20:43:50,879 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-24 20:43:50,880 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)] === [2024-10-24 20:43:50,880 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:43:50,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1190472387, now seen corresponding path program 1 times [2024-10-24 20:43:50,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:43:50,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295872282] [2024-10-24 20:43:50,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:43:50,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:43:50,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:51,019 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-24 20:43:51,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:51,022 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-24 20:43:51,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:51,024 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-24 20:43:51,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:51,026 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-24 20:43:51,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:43:51,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295872282] [2024-10-24 20:43:51,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295872282] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 20:43:51,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 20:43:51,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 20:43:51,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556496243] [2024-10-24 20:43:51,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 20:43:51,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 20:43:51,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:43:51,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 20:43:51,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 20:43:51,027 INFO L87 Difference]: Start difference. First operand 452 states and 558 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) [2024-10-24 20:43:51,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:43:51,197 INFO L93 Difference]: Finished difference Result 575 states and 595 transitions. [2024-10-24 20:43:51,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 20:43:51,197 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 [2024-10-24 20:43:51,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:43:51,199 INFO L225 Difference]: With dead ends: 575 [2024-10-24 20:43:51,199 INFO L226 Difference]: Without dead ends: 574 [2024-10-24 20:43:51,199 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-24 20:43:51,201 INFO L432 NwaCegarLoop]: 287 mSDtfsCounter, 311 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 1407 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 20:43:51,201 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 1407 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 20:43:51,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2024-10-24 20:43:51,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 452. [2024-10-24 20:43:51,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 288 states have (on average 1.7777777777777777) internal successors, (512), 426 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) [2024-10-24 20:43:51,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 557 transitions. [2024-10-24 20:43:51,212 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 557 transitions. Word has length 51 [2024-10-24 20:43:51,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:43:51,212 INFO L471 AbstractCegarLoop]: Abstraction has 452 states and 557 transitions. [2024-10-24 20:43:51,212 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) [2024-10-24 20:43:51,212 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 557 transitions. [2024-10-24 20:43:51,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-10-24 20:43:51,212 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:43:51,212 INFO L215 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] [2024-10-24 20:43:51,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-24 20:43:51,213 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting func_to_recursive_line_29_to_41_0Err29ASSERT_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)] === [2024-10-24 20:43:51,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:43:51,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1750061568, now seen corresponding path program 1 times [2024-10-24 20:43:51,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:43:51,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444443069] [2024-10-24 20:43:51,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:43:51,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:43:51,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:51,305 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-24 20:43:51,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:51,308 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-24 20:43:51,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:51,310 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-24 20:43:51,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:51,312 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-24 20:43:51,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:43:51,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444443069] [2024-10-24 20:43:51,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444443069] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 20:43:51,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 20:43:51,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 20:43:51,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338228516] [2024-10-24 20:43:51,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 20:43:51,313 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 20:43:51,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:43:51,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 20:43:51,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 20:43:51,314 INFO L87 Difference]: Start difference. First operand 452 states and 557 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) [2024-10-24 20:43:51,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:43:51,476 INFO L93 Difference]: Finished difference Result 574 states and 594 transitions. [2024-10-24 20:43:51,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 20:43:51,476 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 [2024-10-24 20:43:51,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:43:51,478 INFO L225 Difference]: With dead ends: 574 [2024-10-24 20:43:51,478 INFO L226 Difference]: Without dead ends: 573 [2024-10-24 20:43:51,478 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-24 20:43:51,479 INFO L432 NwaCegarLoop]: 288 mSDtfsCounter, 308 mSDsluCounter, 1121 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 1409 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-24 20:43:51,479 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 1409 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-24 20:43:51,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2024-10-24 20:43:51,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 452. [2024-10-24 20:43:51,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 288 states have (on average 1.7743055555555556) internal successors, (511), 426 states have internal predecessors, (511), 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) [2024-10-24 20:43:51,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 556 transitions. [2024-10-24 20:43:51,489 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 556 transitions. Word has length 52 [2024-10-24 20:43:51,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:43:51,489 INFO L471 AbstractCegarLoop]: Abstraction has 452 states and 556 transitions. [2024-10-24 20:43:51,489 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) [2024-10-24 20:43:51,489 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 556 transitions. [2024-10-24 20:43:51,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-10-24 20:43:51,489 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:43:51,490 INFO L215 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] [2024-10-24 20:43:51,490 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-24 20:43:51,490 INFO L396 AbstractCegarLoop]: === Iteration 17 === 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)] === [2024-10-24 20:43:51,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:43:51,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1582666341, now seen corresponding path program 1 times [2024-10-24 20:43:51,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:43:51,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413615133] [2024-10-24 20:43:51,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:43:51,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:43:51,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:51,615 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2024-10-24 20:43:51,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:51,618 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-10-24 20:43:51,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:51,621 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-10-24 20:43:51,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:51,624 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-24 20:43:51,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:43:51,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413615133] [2024-10-24 20:43:51,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413615133] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 20:43:51,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 20:43:51,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 20:43:51,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786313861] [2024-10-24 20:43:51,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 20:43:51,625 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 20:43:51,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:43:51,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 20:43:51,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-24 20:43:51,625 INFO L87 Difference]: Start difference. First operand 452 states and 556 transitions. Second operand has 7 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 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) [2024-10-24 20:43:51,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:43:51,836 INFO L93 Difference]: Finished difference Result 573 states and 593 transitions. [2024-10-24 20:43:51,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-24 20:43:51,836 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 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 53 [2024-10-24 20:43:51,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:43:51,838 INFO L225 Difference]: With dead ends: 573 [2024-10-24 20:43:51,838 INFO L226 Difference]: Without dead ends: 571 [2024-10-24 20:43:51,838 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-24 20:43:51,839 INFO L432 NwaCegarLoop]: 290 mSDtfsCounter, 310 mSDsluCounter, 1164 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 1454 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 20:43:51,839 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 1454 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 20:43:51,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2024-10-24 20:43:51,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 452. [2024-10-24 20:43:51,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 288 states have (on average 1.7673611111111112) internal successors, (509), 426 states have internal predecessors, (509), 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) [2024-10-24 20:43:51,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 554 transitions. [2024-10-24 20:43:51,859 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 554 transitions. Word has length 53 [2024-10-24 20:43:51,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:43:51,860 INFO L471 AbstractCegarLoop]: Abstraction has 452 states and 554 transitions. [2024-10-24 20:43:51,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 8.0) internal successors, (40), 6 states have internal predecessors, (40), 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) [2024-10-24 20:43:51,860 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 554 transitions. [2024-10-24 20:43:51,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-10-24 20:43:51,860 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:43:51,860 INFO L215 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] [2024-10-24 20:43:51,860 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-24 20:43:51,861 INFO L396 AbstractCegarLoop]: === Iteration 18 === 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)] === [2024-10-24 20:43:51,862 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:43:51,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1818016418, now seen corresponding path program 1 times [2024-10-24 20:43:51,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:43:51,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220975311] [2024-10-24 20:43:51,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:43:51,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:43:51,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat