./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_sqrt1-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 803cd42f 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 ../sv-benchmarks/c/recursified_nla-digbench/recursified_sqrt1-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 ac02a57e98f6481647f49b84c91fda6d0505e35fbffb37ed6b508f20e911a1af --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 23:09:51,336 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 23:09:51,387 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-11-22 23:09:51,392 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 23:09:51,393 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 23:09:51,413 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 23:09:51,414 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 23:09:51,414 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 23:09:51,415 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 23:09:51,417 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 23:09:51,417 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 23:09:51,417 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 23:09:51,418 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 23:09:51,418 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 23:09:51,418 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 23:09:51,420 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 23:09:51,420 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-22 23:09:51,420 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 23:09:51,420 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 23:09:51,420 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 23:09:51,421 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 23:09:51,421 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-22 23:09:51,421 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 23:09:51,421 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-22 23:09:51,421 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 23:09:51,422 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-11-22 23:09:51,422 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-22 23:09:51,425 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 23:09:51,425 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-22 23:09:51,425 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 23:09:51,425 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 23:09:51,426 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 23:09:51,426 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 23:09:51,426 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 23:09:51,426 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 23:09:51,426 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 23:09:51,426 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 23:09:51,427 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-22 23:09:51,427 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 23:09:51,427 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 23:09:51,427 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 23:09:51,428 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 23:09:51,428 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 23:09:51,428 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 23:09:51,428 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac02a57e98f6481647f49b84c91fda6d0505e35fbffb37ed6b508f20e911a1af [2024-11-22 23:09:51,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 23:09:51,644 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 23:09:51,647 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 23:09:51,648 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 23:09:51,648 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 23:09:51,649 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursified_nla-digbench/recursified_sqrt1-ll.c [2024-11-22 23:09:52,877 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 23:09:53,018 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 23:09:53,019 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_sqrt1-ll.c [2024-11-22 23:09:53,027 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc5ec9980/25f8e6d47c1d4c67a72759aeae56fa11/FLAG0074f346f [2024-11-22 23:09:53,037 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc5ec9980/25f8e6d47c1d4c67a72759aeae56fa11 [2024-11-22 23:09:53,039 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 23:09:53,040 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 23:09:53,041 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 23:09:53,041 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 23:09:53,045 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 23:09:53,046 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:09:53" (1/1) ... [2024-11-22 23:09:53,047 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@602622fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:09:53, skipping insertion in model container [2024-11-22 23:09:53,047 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 11:09:53" (1/1) ... [2024-11-22 23:09:53,063 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 23:09:53,251 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 23:09:53,262 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 23:09:53,286 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 23:09:53,298 INFO L204 MainTranslator]: Completed translation [2024-11-22 23:09:53,299 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:09:53 WrapperNode [2024-11-22 23:09:53,299 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 23:09:53,300 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 23:09:53,300 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 23:09:53,300 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 23:09:53,305 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:09:53" (1/1) ... [2024-11-22 23:09:53,314 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:09:53" (1/1) ... [2024-11-22 23:09:53,329 INFO L138 Inliner]: procedures = 16, calls = 59, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 88 [2024-11-22 23:09:53,329 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 23:09:53,330 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 23:09:53,330 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 23:09:53,330 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 23:09:53,338 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:09:53" (1/1) ... [2024-11-22 23:09:53,338 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:09:53" (1/1) ... [2024-11-22 23:09:53,340 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:09:53" (1/1) ... [2024-11-22 23:09:53,354 INFO L175 MemorySlicer]: Split 33 memory accesses to 5 slices as follows [2, 8, 12, 2, 9]. 36 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 7 writes are split as follows [0, 2, 2, 1, 2]. [2024-11-22 23:09:53,354 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:09:53" (1/1) ... [2024-11-22 23:09:53,354 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:09:53" (1/1) ... [2024-11-22 23:09:53,358 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:09:53" (1/1) ... [2024-11-22 23:09:53,359 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:09:53" (1/1) ... [2024-11-22 23:09:53,360 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:09:53" (1/1) ... [2024-11-22 23:09:53,361 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:09:53" (1/1) ... [2024-11-22 23:09:53,363 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 23:09:53,365 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 23:09:53,365 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 23:09:53,365 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 23:09:53,365 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:09:53" (1/1) ... [2024-11-22 23:09:53,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 23:09:53,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:09:53,395 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) [2024-11-22 23:09:53,397 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 [2024-11-22 23:09:53,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 23:09:53,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 23:09:53,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 23:09:53,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-22 23:09:53,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-22 23:09:53,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-22 23:09:53,432 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-22 23:09:53,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 23:09:53,432 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 23:09:53,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-22 23:09:53,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-22 23:09:53,433 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-22 23:09:53,433 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_29_to_40_0 [2024-11-22 23:09:53,434 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_29_to_40_0 [2024-11-22 23:09:53,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 23:09:53,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 23:09:53,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-22 23:09:53,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-22 23:09:53,434 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-22 23:09:53,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-22 23:09:53,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-22 23:09:53,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-22 23:09:53,435 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-22 23:09:53,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-22 23:09:53,512 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 23:09:53,514 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 23:09:53,781 INFO L? ?]: Removed 99 outVars from TransFormulas that were not future-live. [2024-11-22 23:09:53,782 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 23:09:53,795 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 23:09:53,795 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-22 23:09:53,795 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:09:53 BoogieIcfgContainer [2024-11-22 23:09:53,795 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 23:09:53,796 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 23:09:53,797 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 23:09:53,800 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 23:09:53,800 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 11:09:53" (1/3) ... [2024-11-22 23:09:53,801 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2146e11c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:09:53, skipping insertion in model container [2024-11-22 23:09:53,801 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 11:09:53" (2/3) ... [2024-11-22 23:09:53,802 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2146e11c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 11:09:53, skipping insertion in model container [2024-11-22 23:09:53,802 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 11:09:53" (3/3) ... [2024-11-22 23:09:53,803 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_sqrt1-ll.c [2024-11-22 23:09:53,814 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 23:09:53,815 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 50 error locations. [2024-11-22 23:09:53,865 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 23:09:53,870 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;@deb4439, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 23:09:53,870 INFO L334 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2024-11-22 23:09:53,873 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 70 states have (on average 1.7571428571428571) internal successors, (123), 121 states have internal predecessors, (123), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-22 23:09:53,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-22 23:09:53,877 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:09:53,877 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-22 23:09:53,877 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-22 23:09:53,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:09:53,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1184608053, now seen corresponding path program 1 times [2024-11-22 23:09:53,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:09:53,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946112058] [2024-11-22 23:09:53,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:09:53,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:09:53,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:09:54,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:09:54,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:09:54,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946112058] [2024-11-22 23:09:54,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946112058] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:09:54,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:09:54,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 23:09:54,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427778735] [2024-11-22 23:09:54,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:09:54,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 23:09:54,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:09:54,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 23:09:54,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 23:09:54,257 INFO L87 Difference]: Start difference. First operand has 131 states, 70 states have (on average 1.7571428571428571) internal successors, (123), 121 states have internal predecessors, (123), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 23:09:54,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:09:54,428 INFO L93 Difference]: Finished difference Result 328 states and 365 transitions. [2024-11-22 23:09:54,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 23:09:54,430 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-11-22 23:09:54,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:09:54,435 INFO L225 Difference]: With dead ends: 328 [2024-11-22 23:09:54,435 INFO L226 Difference]: Without dead ends: 194 [2024-11-22 23:09:54,440 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-22 23:09:54,445 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 118 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:09:54,446 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 588 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:09:54,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-11-22 23:09:54,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 157. [2024-11-22 23:09:54,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 94 states have (on average 1.7340425531914894) internal successors, (163), 144 states have internal predecessors, (163), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-11-22 23:09:54,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 184 transitions. [2024-11-22 23:09:54,495 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 184 transitions. Word has length 6 [2024-11-22 23:09:54,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:09:54,499 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 184 transitions. [2024-11-22 23:09:54,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 5 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-22 23:09:54,499 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 184 transitions. [2024-11-22 23:09:54,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-22 23:09:54,500 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:09:54,500 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:09:54,501 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 23:09:54,501 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_29_to_40_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-22 23:09:54,501 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:09:54,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1492751008, now seen corresponding path program 1 times [2024-11-22 23:09:54,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:09:54,501 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618052639] [2024-11-22 23:09:54,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:09:54,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:09:54,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:09:54,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:09:54,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:09:54,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618052639] [2024-11-22 23:09:54,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618052639] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:09:54,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:09:54,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 23:09:54,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040182105] [2024-11-22 23:09:54,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:09:54,661 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 23:09:54,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:09:54,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 23:09:54,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 23:09:54,662 INFO L87 Difference]: Start difference. First operand 157 states and 184 transitions. Second operand has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 23:09:54,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:09:54,779 INFO L93 Difference]: Finished difference Result 194 states and 204 transitions. [2024-11-22 23:09:54,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 23:09:54,779 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2024-11-22 23:09:54,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:09:54,782 INFO L225 Difference]: With dead ends: 194 [2024-11-22 23:09:54,782 INFO L226 Difference]: Without dead ends: 192 [2024-11-22 23:09:54,783 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-22 23:09:54,783 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 113 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:09:54,784 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 553 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:09:54,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2024-11-22 23:09:54,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 157. [2024-11-22 23:09:54,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 94 states have (on average 1.7127659574468086) internal successors, (161), 144 states have internal predecessors, (161), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-11-22 23:09:54,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 182 transitions. [2024-11-22 23:09:54,796 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 182 transitions. Word has length 16 [2024-11-22 23:09:54,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:09:54,796 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 182 transitions. [2024-11-22 23:09:54,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.25) internal successors, (13), 5 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 23:09:54,797 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 182 transitions. [2024-11-22 23:09:54,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-22 23:09:54,797 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:09:54,797 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:09:54,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 23:09:54,798 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_29_to_40_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-22 23:09:54,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:09:54,798 INFO L85 PathProgramCache]: Analyzing trace with hash -14640318, now seen corresponding path program 1 times [2024-11-22 23:09:54,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:09:54,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924842348] [2024-11-22 23:09:54,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:09:54,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:09:54,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:09:54,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:09:54,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:09:54,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924842348] [2024-11-22 23:09:54,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924842348] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:09:54,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:09:54,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 23:09:54,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435979568] [2024-11-22 23:09:54,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:09:54,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 23:09:54,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:09:54,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 23:09:54,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 23:09:54,949 INFO L87 Difference]: Start difference. First operand 157 states and 182 transitions. Second operand has 6 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 23:09:55,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:09:55,056 INFO L93 Difference]: Finished difference Result 192 states and 202 transitions. [2024-11-22 23:09:55,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 23:09:55,057 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 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 18 [2024-11-22 23:09:55,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:09:55,058 INFO L225 Difference]: With dead ends: 192 [2024-11-22 23:09:55,058 INFO L226 Difference]: Without dead ends: 190 [2024-11-22 23:09:55,059 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-22 23:09:55,060 INFO L432 NwaCegarLoop]: 113 mSDtfsCounter, 103 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:09:55,060 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 550 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:09:55,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-11-22 23:09:55,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 157. [2024-11-22 23:09:55,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 94 states have (on average 1.6914893617021276) internal successors, (159), 144 states have internal predecessors, (159), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-11-22 23:09:55,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 180 transitions. [2024-11-22 23:09:55,072 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 180 transitions. Word has length 18 [2024-11-22 23:09:55,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:09:55,073 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 180 transitions. [2024-11-22 23:09:55,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 23:09:55,073 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 180 transitions. [2024-11-22 23:09:55,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-22 23:09:55,073 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:09:55,074 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] [2024-11-22 23:09:55,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 23:09:55,074 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_29_to_40_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-22 23:09:55,074 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:09:55,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1184442076, now seen corresponding path program 1 times [2024-11-22 23:09:55,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:09:55,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002925087] [2024-11-22 23:09:55,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:09:55,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:09:55,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 23:09:55,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1533599997] [2024-11-22 23:09:55,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:09:55,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:09:55,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:09:55,106 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) [2024-11-22 23:09:55,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 23:09:55,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:09:55,173 INFO L255 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-11-22 23:09:55,177 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:09:55,213 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-22 23:09:55,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:09:55,363 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 23:09:55,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:09:55,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002925087] [2024-11-22 23:09:55,364 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 23:09:55,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1533599997] [2024-11-22 23:09:55,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1533599997] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:09:55,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:09:55,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-22 23:09:55,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097508134] [2024-11-22 23:09:55,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:09:55,365 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 23:09:55,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:09:55,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 23:09:55,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-22 23:09:55,365 INFO L87 Difference]: Start difference. First operand 157 states and 180 transitions. Second operand has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 23:09:55,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:09:55,648 INFO L93 Difference]: Finished difference Result 216 states and 227 transitions. [2024-11-22 23:09:55,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 23:09:55,648 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2024-11-22 23:09:55,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:09:55,649 INFO L225 Difference]: With dead ends: 216 [2024-11-22 23:09:55,649 INFO L226 Difference]: Without dead ends: 214 [2024-11-22 23:09:55,650 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2024-11-22 23:09:55,651 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 170 mSDsluCounter, 875 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 976 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 23:09:55,651 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 976 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 23:09:55,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2024-11-22 23:09:55,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 157. [2024-11-22 23:09:55,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 94 states have (on average 1.6702127659574468) internal successors, (157), 144 states have internal predecessors, (157), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2024-11-22 23:09:55,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 178 transitions. [2024-11-22 23:09:55,658 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 178 transitions. Word has length 20 [2024-11-22 23:09:55,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:09:55,658 INFO L471 AbstractCegarLoop]: Abstraction has 157 states and 178 transitions. [2024-11-22 23:09:55,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 9 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 23:09:55,658 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 178 transitions. [2024-11-22 23:09:55,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-22 23:09:55,659 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:09:55,659 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] [2024-11-22 23:09:55,670 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-22 23:09:55,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:09:55,860 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_29_to_40_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-22 23:09:55,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:09:55,860 INFO L85 PathProgramCache]: Analyzing trace with hash -744717107, now seen corresponding path program 1 times [2024-11-22 23:09:55,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:09:55,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918033318] [2024-11-22 23:09:55,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:09:55,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:09:55,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 23:09:55,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [353647266] [2024-11-22 23:09:55,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:09:55,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:09:55,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:09:55,880 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) [2024-11-22 23:09:55,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 23:09:55,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:09:55,941 INFO L255 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-22 23:09:55,943 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:09:55,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-22 23:09:56,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-22 23:09:56,083 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 23:09:56,083 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:09:56,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:09:56,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918033318] [2024-11-22 23:09:56,167 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 23:09:56,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353647266] [2024-11-22 23:09:56,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [353647266] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:09:56,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-22 23:09:56,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-11-22 23:09:56,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946705885] [2024-11-22 23:09:56,167 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-22 23:09:56,167 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 23:09:56,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:09:56,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 23:09:56,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-11-22 23:09:56,168 INFO L87 Difference]: Start difference. First operand 157 states and 178 transitions. Second operand has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:10:00,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-22 23:10:04,509 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-22 23:10:08,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-22 23:10:08,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:10:08,532 INFO L93 Difference]: Finished difference Result 230 states and 239 transitions. [2024-11-22 23:10:08,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 23:10:08,533 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2024-11-22 23:10:08,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:10:08,534 INFO L225 Difference]: With dead ends: 230 [2024-11-22 23:10:08,534 INFO L226 Difference]: Without dead ends: 229 [2024-11-22 23:10:08,535 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=373, Unknown=0, NotChecked=0, Total=462 [2024-11-22 23:10:08,538 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 239 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 19 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 871 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2024-11-22 23:10:08,538 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 871 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 348 Invalid, 3 Unknown, 0 Unchecked, 12.2s Time] [2024-11-22 23:10:08,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2024-11-22 23:10:08,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 175. [2024-11-22 23:10:08,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 109 states have (on average 1.6605504587155964) internal successors, (181), 159 states have internal predecessors, (181), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-22 23:10:08,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 206 transitions. [2024-11-22 23:10:08,548 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 206 transitions. Word has length 28 [2024-11-22 23:10:08,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:10:08,548 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 206 transitions. [2024-11-22 23:10:08,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:10:08,549 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 206 transitions. [2024-11-22 23:10:08,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-22 23:10:08,549 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:10:08,549 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] [2024-11-22 23:10:08,555 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-22 23:10:08,753 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:10:08,755 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_29_to_40_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-22 23:10:08,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:10:08,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1611393776, now seen corresponding path program 1 times [2024-11-22 23:10:08,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:10:08,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164036646] [2024-11-22 23:10:08,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:10:08,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:10:08,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 23:10:08,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [43739150] [2024-11-22 23:10:08,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:10:08,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:10:08,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:10:08,775 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) [2024-11-22 23:10:08,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 23:10:08,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:10:08,839 INFO L255 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-22 23:10:08,840 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:10:08,848 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-22 23:10:09,021 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 23:10:09,022 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:10:09,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:10:09,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164036646] [2024-11-22 23:10:09,163 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 23:10:09,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43739150] [2024-11-22 23:10:09,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43739150] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:10:09,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-22 23:10:09,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2024-11-22 23:10:09,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321511751] [2024-11-22 23:10:09,163 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-22 23:10:09,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 23:10:09,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:10:09,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 23:10:09,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-11-22 23:10:09,164 INFO L87 Difference]: Start difference. First operand 175 states and 206 transitions. Second operand has 11 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:10:09,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:10:09,459 INFO L93 Difference]: Finished difference Result 229 states and 238 transitions. [2024-11-22 23:10:09,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 23:10:09,460 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 29 [2024-11-22 23:10:09,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:10:09,461 INFO L225 Difference]: With dead ends: 229 [2024-11-22 23:10:09,461 INFO L226 Difference]: Without dead ends: 228 [2024-11-22 23:10:09,461 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2024-11-22 23:10:09,461 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 247 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 584 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 23:10:09,462 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 584 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 23:10:09,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-11-22 23:10:09,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 175. [2024-11-22 23:10:09,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 109 states have (on average 1.651376146788991) internal successors, (180), 159 states have internal predecessors, (180), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-22 23:10:09,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 205 transitions. [2024-11-22 23:10:09,473 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 205 transitions. Word has length 29 [2024-11-22 23:10:09,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:10:09,473 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 205 transitions. [2024-11-22 23:10:09,474 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 23:10:09,474 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 205 transitions. [2024-11-22 23:10:09,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-22 23:10:09,475 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:10:09,475 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] [2024-11-22 23:10:09,485 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 23:10:09,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:10:09,676 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_29_to_40_0Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-22 23:10:09,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:10:09,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1586400559, now seen corresponding path program 1 times [2024-11-22 23:10:09,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:10:09,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539376062] [2024-11-22 23:10:09,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:10:09,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:10:09,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:10:09,773 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 23:10:09,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:10:09,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539376062] [2024-11-22 23:10:09,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539376062] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:10:09,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:10:09,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 23:10:09,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786016960] [2024-11-22 23:10:09,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:10:09,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 23:10:09,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:10:09,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 23:10:09,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 23:10:09,775 INFO L87 Difference]: Start difference. First operand 175 states and 205 transitions. Second operand has 6 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-22 23:10:09,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:10:09,879 INFO L93 Difference]: Finished difference Result 212 states and 222 transitions. [2024-11-22 23:10:09,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 23:10:09,879 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 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 30 [2024-11-22 23:10:09,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:10:09,880 INFO L225 Difference]: With dead ends: 212 [2024-11-22 23:10:09,880 INFO L226 Difference]: Without dead ends: 210 [2024-11-22 23:10:09,880 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-22 23:10:09,881 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 121 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:10:09,881 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 527 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:10:09,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2024-11-22 23:10:09,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 175. [2024-11-22 23:10:09,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 109 states have (on average 1.6330275229357798) internal successors, (178), 159 states have internal predecessors, (178), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-22 23:10:09,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 203 transitions. [2024-11-22 23:10:09,887 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 203 transitions. Word has length 30 [2024-11-22 23:10:09,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:10:09,887 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 203 transitions. [2024-11-22 23:10:09,887 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 5.5) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-22 23:10:09,888 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 203 transitions. [2024-11-22 23:10:09,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-22 23:10:09,888 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:10:09,888 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, 1] [2024-11-22 23:10:09,888 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 23:10:09,889 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_29_to_40_0Err14ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-22 23:10:09,889 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:10:09,889 INFO L85 PathProgramCache]: Analyzing trace with hash -182450799, now seen corresponding path program 1 times [2024-11-22 23:10:09,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:10:09,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718168357] [2024-11-22 23:10:09,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:10:09,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:10:09,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 23:10:09,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1097781110] [2024-11-22 23:10:09,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:10:09,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:10:09,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:10:09,905 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) [2024-11-22 23:10:09,906 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 23:10:09,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:10:09,962 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 42 conjuncts are in the unsatisfiable core [2024-11-22 23:10:09,963 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:10:09,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-22 23:10:09,974 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-22 23:10:10,007 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 7 treesize of output 3 [2024-11-22 23:10:10,212 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 23:10:10,212 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:10:10,400 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 16 treesize of output 12 [2024-11-22 23:10:10,662 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 23:10:10,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:10:10,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718168357] [2024-11-22 23:10:10,662 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 23:10:10,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097781110] [2024-11-22 23:10:10,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097781110] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:10:10,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-22 23:10:10,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 19 [2024-11-22 23:10:10,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450991849] [2024-11-22 23:10:10,663 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-22 23:10:10,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-22 23:10:10,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:10:10,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-22 23:10:10,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2024-11-22 23:10:10,664 INFO L87 Difference]: Start difference. First operand 175 states and 203 transitions. Second operand has 20 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 18 states have internal predecessors, (53), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-22 23:10:11,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:10:11,780 INFO L93 Difference]: Finished difference Result 230 states and 239 transitions. [2024-11-22 23:10:11,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 23:10:11,781 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 18 states have internal predecessors, (53), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) Word has length 32 [2024-11-22 23:10:11,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:10:11,783 INFO L225 Difference]: With dead ends: 230 [2024-11-22 23:10:11,783 INFO L226 Difference]: Without dead ends: 228 [2024-11-22 23:10:11,787 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=120, Invalid=480, Unknown=0, NotChecked=0, Total=600 [2024-11-22 23:10:11,788 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 234 mSDsluCounter, 1015 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 1109 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-22 23:10:11,788 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 1109 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-22 23:10:11,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2024-11-22 23:10:11,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 175. [2024-11-22 23:10:11,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 109 states have (on average 1.614678899082569) internal successors, (176), 159 states have internal predecessors, (176), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-22 23:10:11,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 201 transitions. [2024-11-22 23:10:11,795 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 201 transitions. Word has length 32 [2024-11-22 23:10:11,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:10:11,796 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 201 transitions. [2024-11-22 23:10:11,796 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 3.1176470588235294) internal successors, (53), 18 states have internal predecessors, (53), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (4), 2 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-22 23:10:11,797 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 201 transitions. [2024-11-22 23:10:11,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-22 23:10:11,798 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:10:11,798 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, 1, 1, 1] [2024-11-22 23:10:11,804 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-22 23:10:11,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:10:11,998 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_29_to_40_0Err16ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-22 23:10:11,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:10:11,998 INFO L85 PathProgramCache]: Analyzing trace with hash 758443507, now seen corresponding path program 1 times [2024-11-22 23:10:11,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:10:11,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904572855] [2024-11-22 23:10:11,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:10:11,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:10:12,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:10:12,131 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 23:10:12,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:10:12,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904572855] [2024-11-22 23:10:12,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904572855] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:10:12,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:10:12,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 23:10:12,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817183976] [2024-11-22 23:10:12,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:10:12,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 23:10:12,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:10:12,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 23:10:12,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 23:10:12,133 INFO L87 Difference]: Start difference. First operand 175 states and 201 transitions. Second operand has 6 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-22 23:10:12,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:10:12,221 INFO L93 Difference]: Finished difference Result 212 states and 222 transitions. [2024-11-22 23:10:12,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 23:10:12,222 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 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 34 [2024-11-22 23:10:12,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:10:12,223 INFO L225 Difference]: With dead ends: 212 [2024-11-22 23:10:12,223 INFO L226 Difference]: Without dead ends: 210 [2024-11-22 23:10:12,223 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-22 23:10:12,223 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 103 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 533 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:10:12,223 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 533 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:10:12,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2024-11-22 23:10:12,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 175. [2024-11-22 23:10:12,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 109 states have (on average 1.5963302752293578) internal successors, (174), 159 states have internal predecessors, (174), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-22 23:10:12,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 199 transitions. [2024-11-22 23:10:12,229 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 199 transitions. Word has length 34 [2024-11-22 23:10:12,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:10:12,229 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 199 transitions. [2024-11-22 23:10:12,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-22 23:10:12,229 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 199 transitions. [2024-11-22 23:10:12,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-22 23:10:12,230 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:10:12,230 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, 1, 1, 1, 1, 1] [2024-11-22 23:10:12,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 23:10:12,230 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_29_to_40_0Err18ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-22 23:10:12,230 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:10:12,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1280227755, now seen corresponding path program 1 times [2024-11-22 23:10:12,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:10:12,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192025907] [2024-11-22 23:10:12,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:10:12,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:10:12,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:10:12,354 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 23:10:12,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:10:12,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192025907] [2024-11-22 23:10:12,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192025907] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:10:12,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:10:12,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 23:10:12,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136068322] [2024-11-22 23:10:12,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:10:12,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 23:10:12,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:10:12,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 23:10:12,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-22 23:10:12,355 INFO L87 Difference]: Start difference. First operand 175 states and 199 transitions. Second operand has 7 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-22 23:10:12,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:10:12,488 INFO L93 Difference]: Finished difference Result 210 states and 220 transitions. [2024-11-22 23:10:12,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 23:10:12,488 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 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 36 [2024-11-22 23:10:12,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:10:12,489 INFO L225 Difference]: With dead ends: 210 [2024-11-22 23:10:12,489 INFO L226 Difference]: Without dead ends: 208 [2024-11-22 23:10:12,490 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-22 23:10:12,490 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 97 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:10:12,490 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 614 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:10:12,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2024-11-22 23:10:12,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 175. [2024-11-22 23:10:12,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 109 states have (on average 1.5779816513761469) internal successors, (172), 159 states have internal predecessors, (172), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-22 23:10:12,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 197 transitions. [2024-11-22 23:10:12,495 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 197 transitions. Word has length 36 [2024-11-22 23:10:12,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:10:12,495 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 197 transitions. [2024-11-22 23:10:12,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.6) internal successors, (28), 6 states have internal predecessors, (28), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-22 23:10:12,496 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 197 transitions. [2024-11-22 23:10:12,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-22 23:10:12,496 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:10:12,496 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, 1, 1, 1, 1, 1, 1] [2024-11-22 23:10:12,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 23:10:12,496 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_29_to_40_0Err19ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-22 23:10:12,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:10:12,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1032354664, now seen corresponding path program 1 times [2024-11-22 23:10:12,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:10:12,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484771335] [2024-11-22 23:10:12,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:10:12,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:10:12,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:10:12,717 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 23:10:12,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:10:12,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484771335] [2024-11-22 23:10:12,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484771335] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:10:12,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:10:12,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 23:10:12,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772550262] [2024-11-22 23:10:12,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:10:12,718 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 23:10:12,718 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:10:12,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 23:10:12,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 23:10:12,718 INFO L87 Difference]: Start difference. First operand 175 states and 197 transitions. Second operand has 7 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-22 23:10:13,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:10:13,007 INFO L93 Difference]: Finished difference Result 200 states and 210 transitions. [2024-11-22 23:10:13,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 23:10:13,007 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 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 37 [2024-11-22 23:10:13,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:10:13,008 INFO L225 Difference]: With dead ends: 200 [2024-11-22 23:10:13,008 INFO L226 Difference]: Without dead ends: 198 [2024-11-22 23:10:13,008 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-22 23:10:13,009 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 95 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 23:10:13,009 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 585 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 23:10:13,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-22 23:10:13,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 175. [2024-11-22 23:10:13,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 109 states have (on average 1.5596330275229358) internal successors, (170), 159 states have internal predecessors, (170), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-22 23:10:13,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 195 transitions. [2024-11-22 23:10:13,014 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 195 transitions. Word has length 37 [2024-11-22 23:10:13,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:10:13,014 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 195 transitions. [2024-11-22 23:10:13,014 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 5.8) internal successors, (29), 6 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-22 23:10:13,014 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 195 transitions. [2024-11-22 23:10:13,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-22 23:10:13,015 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:10:13,015 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] [2024-11-22 23:10:13,015 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 23:10:13,015 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_29_to_40_0Err22ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-22 23:10:13,015 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:10:13,015 INFO L85 PathProgramCache]: Analyzing trace with hash 2054185613, now seen corresponding path program 1 times [2024-11-22 23:10:13,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:10:13,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108276581] [2024-11-22 23:10:13,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:10:13,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:10:13,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:10:13,122 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-22 23:10:13,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:10:13,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108276581] [2024-11-22 23:10:13,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108276581] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:10:13,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:10:13,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 23:10:13,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983531741] [2024-11-22 23:10:13,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:10:13,123 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 23:10:13,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:10:13,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 23:10:13,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 23:10:13,125 INFO L87 Difference]: Start difference. First operand 175 states and 195 transitions. Second operand has 6 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-22 23:10:13,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:10:13,191 INFO L93 Difference]: Finished difference Result 185 states and 199 transitions. [2024-11-22 23:10:13,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 23:10:13,192 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 47 [2024-11-22 23:10:13,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:10:13,193 INFO L225 Difference]: With dead ends: 185 [2024-11-22 23:10:13,194 INFO L226 Difference]: Without dead ends: 183 [2024-11-22 23:10:13,194 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-22 23:10:13,195 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 49 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 566 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:10:13,195 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 566 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:10:13,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-22 23:10:13,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 177. [2024-11-22 23:10:13,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 111 states have (on average 1.5495495495495495) internal successors, (172), 161 states have internal predecessors, (172), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-22 23:10:13,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 197 transitions. [2024-11-22 23:10:13,200 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 197 transitions. Word has length 47 [2024-11-22 23:10:13,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:10:13,201 INFO L471 AbstractCegarLoop]: Abstraction has 177 states and 197 transitions. [2024-11-22 23:10:13,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 8.5) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-22 23:10:13,201 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 197 transitions. [2024-11-22 23:10:13,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-22 23:10:13,204 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:10:13,204 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] [2024-11-22 23:10:13,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 23:10:13,204 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting func_to_recursive_line_29_to_40_0Err24ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-22 23:10:13,204 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:10:13,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1612579153, now seen corresponding path program 1 times [2024-11-22 23:10:13,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:10:13,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127167918] [2024-11-22 23:10:13,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:10:13,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:10:13,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:10:13,302 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-22 23:10:13,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:10:13,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127167918] [2024-11-22 23:10:13,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127167918] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:10:13,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:10:13,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 23:10:13,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128546968] [2024-11-22 23:10:13,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:10:13,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 23:10:13,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:10:13,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 23:10:13,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-22 23:10:13,304 INFO L87 Difference]: Start difference. First operand 177 states and 197 transitions. Second operand has 6 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-22 23:10:13,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:10:13,371 INFO L93 Difference]: Finished difference Result 204 states and 214 transitions. [2024-11-22 23:10:13,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 23:10:13,371 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 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 49 [2024-11-22 23:10:13,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:10:13,372 INFO L225 Difference]: With dead ends: 204 [2024-11-22 23:10:13,372 INFO L226 Difference]: Without dead ends: 202 [2024-11-22 23:10:13,373 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-22 23:10:13,373 INFO L432 NwaCegarLoop]: 118 mSDtfsCounter, 72 mSDsluCounter, 443 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:10:13,373 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 561 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:10:13,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-11-22 23:10:13,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 179. [2024-11-22 23:10:13,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 113 states have (on average 1.5398230088495575) internal successors, (174), 163 states have internal predecessors, (174), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (13), 12 states have call predecessors, (13), 12 states have call successors, (13) [2024-11-22 23:10:13,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 199 transitions. [2024-11-22 23:10:13,378 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 199 transitions. Word has length 49 [2024-11-22 23:10:13,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:10:13,378 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 199 transitions. [2024-11-22 23:10:13,379 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-22 23:10:13,379 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 199 transitions. [2024-11-22 23:10:13,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-22 23:10:13,379 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:10:13,379 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] [2024-11-22 23:10:13,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-22 23:10:13,379 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-22 23:10:13,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:10:13,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1549267133, now seen corresponding path program 1 times [2024-11-22 23:10:13,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:10:13,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836255172] [2024-11-22 23:10:13,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:10:13,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:10:13,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:10:13,444 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-22 23:10:13,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:10:13,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836255172] [2024-11-22 23:10:13,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836255172] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:10:13,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:10:13,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 23:10:13,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128644487] [2024-11-22 23:10:13,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:10:13,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 23:10:13,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:10:13,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 23:10:13,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 23:10:13,446 INFO L87 Difference]: Start difference. First operand 179 states and 199 transitions. Second operand has 5 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-22 23:10:13,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:10:13,513 INFO L93 Difference]: Finished difference Result 187 states and 201 transitions. [2024-11-22 23:10:13,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 23:10:13,513 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 50 [2024-11-22 23:10:13,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:10:13,514 INFO L225 Difference]: With dead ends: 187 [2024-11-22 23:10:13,514 INFO L226 Difference]: Without dead ends: 183 [2024-11-22 23:10:13,514 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 23:10:13,515 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 42 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:10:13,515 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 366 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:10:13,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2024-11-22 23:10:13,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 181. [2024-11-22 23:10:13,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 114 states have (on average 1.5) internal successors, (171), 164 states have internal predecessors, (171), 12 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2024-11-22 23:10:13,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 197 transitions. [2024-11-22 23:10:13,520 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 197 transitions. Word has length 50 [2024-11-22 23:10:13,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:10:13,520 INFO L471 AbstractCegarLoop]: Abstraction has 181 states and 197 transitions. [2024-11-22 23:10:13,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.0) internal successors, (36), 5 states have internal predecessors, (36), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-22 23:10:13,520 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 197 transitions. [2024-11-22 23:10:13,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-22 23:10:13,521 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:10:13,521 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] [2024-11-22 23:10:13,521 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 23:10:13,521 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting func_to_recursive_line_29_to_40_0Err26ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-22 23:10:13,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:10:13,521 INFO L85 PathProgramCache]: Analyzing trace with hash 794630865, now seen corresponding path program 1 times [2024-11-22 23:10:13,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:10:13,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958036954] [2024-11-22 23:10:13,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:10:13,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:10:13,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:10:13,749 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-22 23:10:13,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:10:13,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958036954] [2024-11-22 23:10:13,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958036954] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:10:13,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:10:13,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 23:10:13,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081025328] [2024-11-22 23:10:13,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:10:13,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 23:10:13,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:10:13,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 23:10:13,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 23:10:13,751 INFO L87 Difference]: Start difference. First operand 181 states and 197 transitions. Second operand has 7 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-22 23:10:13,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:10:13,884 INFO L93 Difference]: Finished difference Result 195 states and 206 transitions. [2024-11-22 23:10:13,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 23:10:13,885 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 51 [2024-11-22 23:10:13,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:10:13,885 INFO L225 Difference]: With dead ends: 195 [2024-11-22 23:10:13,885 INFO L226 Difference]: Without dead ends: 194 [2024-11-22 23:10:13,887 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-22 23:10:13,887 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 60 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:10:13,887 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 621 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:10:13,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-11-22 23:10:13,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 182. [2024-11-22 23:10:13,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 115 states have (on average 1.4956521739130435) internal successors, (172), 165 states have internal predecessors, (172), 12 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2024-11-22 23:10:13,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 198 transitions. [2024-11-22 23:10:13,894 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 198 transitions. Word has length 51 [2024-11-22 23:10:13,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:10:13,894 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 198 transitions. [2024-11-22 23:10:13,894 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 7.6) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-22 23:10:13,894 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 198 transitions. [2024-11-22 23:10:13,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-22 23:10:13,895 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:10:13,895 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] [2024-11-22 23:10:13,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-22 23:10:13,895 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting func_to_recursive_line_29_to_40_0Err27ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-22 23:10:13,896 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:10:13,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1136246862, now seen corresponding path program 1 times [2024-11-22 23:10:13,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:10:13,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188752961] [2024-11-22 23:10:13,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:10:13,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:10:13,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:10:14,108 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-22 23:10:14,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:10:14,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188752961] [2024-11-22 23:10:14,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188752961] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:10:14,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:10:14,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 23:10:14,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044255644] [2024-11-22 23:10:14,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:10:14,110 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 23:10:14,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:10:14,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 23:10:14,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 23:10:14,111 INFO L87 Difference]: Start difference. First operand 182 states and 198 transitions. Second operand has 7 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-22 23:10:14,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:10:14,224 INFO L93 Difference]: Finished difference Result 195 states and 205 transitions. [2024-11-22 23:10:14,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 23:10:14,224 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 52 [2024-11-22 23:10:14,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:10:14,225 INFO L225 Difference]: With dead ends: 195 [2024-11-22 23:10:14,225 INFO L226 Difference]: Without dead ends: 194 [2024-11-22 23:10:14,225 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-22 23:10:14,226 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 59 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 626 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:10:14,226 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 626 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:10:14,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2024-11-22 23:10:14,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 183. [2024-11-22 23:10:14,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 116 states have (on average 1.4913793103448276) internal successors, (173), 166 states have internal predecessors, (173), 12 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2024-11-22 23:10:14,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 199 transitions. [2024-11-22 23:10:14,232 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 199 transitions. Word has length 52 [2024-11-22 23:10:14,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:10:14,233 INFO L471 AbstractCegarLoop]: Abstraction has 183 states and 199 transitions. [2024-11-22 23:10:14,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 7.8) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-22 23:10:14,233 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 199 transitions. [2024-11-22 23:10:14,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-22 23:10:14,233 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:10:14,233 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:10:14,233 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-22 23:10:14,234 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-22 23:10:14,234 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:10:14,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1423060323, now seen corresponding path program 1 times [2024-11-22 23:10:14,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:10:14,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461715218] [2024-11-22 23:10:14,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:10:14,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:10:14,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:10:14,431 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-22 23:10:14,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:10:14,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461715218] [2024-11-22 23:10:14,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461715218] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:10:14,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734809685] [2024-11-22 23:10:14,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:10:14,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:10:14,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:10:14,434 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:10:14,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 23:10:14,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:10:14,515 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-22 23:10:14,518 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:10:14,521 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-22 23:10:14,554 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-22 23:10:14,747 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-22 23:10:14,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-22 23:10:14,760 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 23:10:14,761 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:10:14,992 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2024-11-22 23:10:15,047 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-22 23:10:15,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734809685] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:10:15,047 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:10:15,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 12] total 28 [2024-11-22 23:10:15,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137180602] [2024-11-22 23:10:15,048 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:10:15,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-22 23:10:15,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:10:15,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-22 23:10:15,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=719, Unknown=0, NotChecked=0, Total=812 [2024-11-22 23:10:15,049 INFO L87 Difference]: Start difference. First operand 183 states and 199 transitions. Second operand has 29 states, 25 states have (on average 4.8) internal successors, (120), 24 states have internal predecessors, (120), 10 states have call successors, (14), 7 states have call predecessors, (14), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-22 23:10:15,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:10:15,617 INFO L93 Difference]: Finished difference Result 205 states and 219 transitions. [2024-11-22 23:10:15,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-22 23:10:15,618 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 25 states have (on average 4.8) internal successors, (120), 24 states have internal predecessors, (120), 10 states have call successors, (14), 7 states have call predecessors, (14), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) Word has length 56 [2024-11-22 23:10:15,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:10:15,620 INFO L225 Difference]: With dead ends: 205 [2024-11-22 23:10:15,620 INFO L226 Difference]: Without dead ends: 202 [2024-11-22 23:10:15,620 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 89 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=237, Invalid=1485, Unknown=0, NotChecked=0, Total=1722 [2024-11-22 23:10:15,621 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 600 mSDsluCounter, 1823 mSDsCounter, 0 mSdLazyCounter, 850 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 1949 SdHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 850 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 23:10:15,621 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [602 Valid, 1949 Invalid, 905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 850 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 23:10:15,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2024-11-22 23:10:15,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 180. [2024-11-22 23:10:15,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 116 states have (on average 1.4655172413793103) internal successors, (170), 163 states have internal predecessors, (170), 12 states have call successors, (12), 4 states have call predecessors, (12), 5 states have return successors, (14), 12 states have call predecessors, (14), 12 states have call successors, (14) [2024-11-22 23:10:15,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 196 transitions. [2024-11-22 23:10:15,627 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 196 transitions. Word has length 56 [2024-11-22 23:10:15,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:10:15,627 INFO L471 AbstractCegarLoop]: Abstraction has 180 states and 196 transitions. [2024-11-22 23:10:15,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 25 states have (on average 4.8) internal successors, (120), 24 states have internal predecessors, (120), 10 states have call successors, (14), 7 states have call predecessors, (14), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-22 23:10:15,627 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 196 transitions. [2024-11-22 23:10:15,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-22 23:10:15,628 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:10:15,628 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:10:15,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-22 23:10:15,831 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-22 23:10:15,832 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-22 23:10:15,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:10:15,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1165197016, now seen corresponding path program 1 times [2024-11-22 23:10:15,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:10:15,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221752381] [2024-11-22 23:10:15,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:10:15,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:10:15,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:10:16,042 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-22 23:10:16,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:10:16,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221752381] [2024-11-22 23:10:16,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221752381] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:10:16,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [30591168] [2024-11-22 23:10:16,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:10:16,043 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:10:16,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:10:16,045 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:10:16,046 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 23:10:16,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:10:16,123 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-22 23:10:16,126 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:10:16,133 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-22 23:10:16,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-22 23:10:16,354 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-22 23:10:16,367 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-22 23:10:16,371 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 23:10:16,371 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:10:16,557 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-11-22 23:10:16,603 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-22 23:10:16,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [30591168] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:10:16,604 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:10:16,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 12] total 28 [2024-11-22 23:10:16,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473026284] [2024-11-22 23:10:16,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:10:16,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-22 23:10:16,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:10:16,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-22 23:10:16,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=719, Unknown=0, NotChecked=0, Total=812 [2024-11-22 23:10:16,605 INFO L87 Difference]: Start difference. First operand 180 states and 196 transitions. Second operand has 29 states, 25 states have (on average 4.88) internal successors, (122), 24 states have internal predecessors, (122), 10 states have call successors, (14), 7 states have call predecessors, (14), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-22 23:10:17,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:10:17,120 INFO L93 Difference]: Finished difference Result 334 states and 356 transitions. [2024-11-22 23:10:17,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-22 23:10:17,121 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 25 states have (on average 4.88) internal successors, (122), 24 states have internal predecessors, (122), 10 states have call successors, (14), 7 states have call predecessors, (14), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) Word has length 57 [2024-11-22 23:10:17,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:10:17,122 INFO L225 Difference]: With dead ends: 334 [2024-11-22 23:10:17,122 INFO L226 Difference]: Without dead ends: 331 [2024-11-22 23:10:17,122 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 91 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=252, Invalid=1554, Unknown=0, NotChecked=0, Total=1806 [2024-11-22 23:10:17,123 INFO L432 NwaCegarLoop]: 98 mSDtfsCounter, 464 mSDsluCounter, 1844 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 1942 SdHoareTripleChecker+Invalid, 731 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 23:10:17,123 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [465 Valid, 1942 Invalid, 731 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 23:10:17,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2024-11-22 23:10:17,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 257. [2024-11-22 23:10:17,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 182 states have (on average 1.521978021978022) internal successors, (277), 230 states have internal predecessors, (277), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-11-22 23:10:17,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 323 transitions. [2024-11-22 23:10:17,132 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 323 transitions. Word has length 57 [2024-11-22 23:10:17,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:10:17,132 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 323 transitions. [2024-11-22 23:10:17,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 25 states have (on average 4.88) internal successors, (122), 24 states have internal predecessors, (122), 10 states have call successors, (14), 7 states have call predecessors, (14), 4 states have return successors, (9), 3 states have call predecessors, (9), 5 states have call successors, (9) [2024-11-22 23:10:17,133 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 323 transitions. [2024-11-22 23:10:17,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-22 23:10:17,133 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:10:17,133 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:10:17,141 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-22 23:10:17,337 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-22 23:10:17,338 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-22 23:10:17,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:10:17,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1285119462, now seen corresponding path program 1 times [2024-11-22 23:10:17,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:10:17,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845662827] [2024-11-22 23:10:17,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:10:17,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:10:17,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:10:17,412 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-22 23:10:17,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:10:17,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845662827] [2024-11-22 23:10:17,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845662827] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:10:17,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:10:17,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 23:10:17,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686166925] [2024-11-22 23:10:17,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:10:17,414 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 23:10:17,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:10:17,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 23:10:17,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 23:10:17,414 INFO L87 Difference]: Start difference. First operand 257 states and 323 transitions. Second operand has 5 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 23:10:17,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:10:17,491 INFO L93 Difference]: Finished difference Result 262 states and 324 transitions. [2024-11-22 23:10:17,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 23:10:17,492 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 60 [2024-11-22 23:10:17,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:10:17,493 INFO L225 Difference]: With dead ends: 262 [2024-11-22 23:10:17,493 INFO L226 Difference]: Without dead ends: 260 [2024-11-22 23:10:17,493 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 23:10:17,494 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 35 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:10:17,494 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 348 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:10:17,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2024-11-22 23:10:17,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 257. [2024-11-22 23:10:17,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 182 states have (on average 1.510989010989011) internal successors, (275), 230 states have internal predecessors, (275), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-11-22 23:10:17,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 321 transitions. [2024-11-22 23:10:17,503 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 321 transitions. Word has length 60 [2024-11-22 23:10:17,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:10:17,503 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 321 transitions. [2024-11-22 23:10:17,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.25) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 23:10:17,503 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 321 transitions. [2024-11-22 23:10:17,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-22 23:10:17,504 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:10:17,504 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:10:17,504 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-22 23:10:17,504 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-22 23:10:17,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:10:17,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1950782204, now seen corresponding path program 1 times [2024-11-22 23:10:17,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:10:17,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071250325] [2024-11-22 23:10:17,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:10:17,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:10:17,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:10:17,586 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-22 23:10:17,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:10:17,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071250325] [2024-11-22 23:10:17,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071250325] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:10:17,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:10:17,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 23:10:17,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234866546] [2024-11-22 23:10:17,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:10:17,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 23:10:17,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:10:17,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 23:10:17,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 23:10:17,588 INFO L87 Difference]: Start difference. First operand 257 states and 321 transitions. Second operand has 5 states, 4 states have (on average 10.75) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 23:10:17,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:10:17,673 INFO L93 Difference]: Finished difference Result 260 states and 322 transitions. [2024-11-22 23:10:17,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 23:10:17,673 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 10.75) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 62 [2024-11-22 23:10:17,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:10:17,675 INFO L225 Difference]: With dead ends: 260 [2024-11-22 23:10:17,676 INFO L226 Difference]: Without dead ends: 258 [2024-11-22 23:10:17,676 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 23:10:17,677 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 29 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 343 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:10:17,677 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 343 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:10:17,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2024-11-22 23:10:17,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 257. [2024-11-22 23:10:17,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 182 states have (on average 1.5) internal successors, (273), 230 states have internal predecessors, (273), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-11-22 23:10:17,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 319 transitions. [2024-11-22 23:10:17,691 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 319 transitions. Word has length 62 [2024-11-22 23:10:17,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:10:17,691 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 319 transitions. [2024-11-22 23:10:17,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 10.75) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 23:10:17,691 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 319 transitions. [2024-11-22 23:10:17,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-22 23:10:17,692 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:10:17,692 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:10:17,692 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-22 23:10:17,692 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-22 23:10:17,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:10:17,693 INFO L85 PathProgramCache]: Analyzing trace with hash 2095961054, now seen corresponding path program 1 times [2024-11-22 23:10:17,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:10:17,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695548972] [2024-11-22 23:10:17,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:10:17,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:10:17,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 23:10:17,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2052051092] [2024-11-22 23:10:17,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:10:17,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:10:17,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:10:17,716 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:10:17,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 23:10:17,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:10:17,796 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-22 23:10:17,798 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:10:17,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-22 23:10:17,879 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-22 23:10:17,879 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 23:10:17,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:10:17,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695548972] [2024-11-22 23:10:17,879 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 23:10:17,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052051092] [2024-11-22 23:10:17,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052051092] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:10:17,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:10:17,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 23:10:17,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823070583] [2024-11-22 23:10:17,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:10:17,880 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 23:10:17,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:10:17,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 23:10:17,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-22 23:10:17,880 INFO L87 Difference]: Start difference. First operand 257 states and 319 transitions. Second operand has 7 states, 6 states have (on average 8.0) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 23:10:17,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:10:17,988 INFO L93 Difference]: Finished difference Result 284 states and 343 transitions. [2024-11-22 23:10:17,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 23:10:17,989 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 64 [2024-11-22 23:10:17,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:10:17,990 INFO L225 Difference]: With dead ends: 284 [2024-11-22 23:10:17,990 INFO L226 Difference]: Without dead ends: 282 [2024-11-22 23:10:17,990 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-11-22 23:10:17,991 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 92 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 22 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:10:17,991 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 454 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 131 Invalid, 4 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:10:17,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2024-11-22 23:10:17,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 257. [2024-11-22 23:10:17,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 182 states have (on average 1.489010989010989) internal successors, (271), 230 states have internal predecessors, (271), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-11-22 23:10:17,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 317 transitions. [2024-11-22 23:10:17,998 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 317 transitions. Word has length 64 [2024-11-22 23:10:17,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:10:17,998 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 317 transitions. [2024-11-22 23:10:17,999 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 7 states have internal predecessors, (48), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-22 23:10:17,999 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 317 transitions. [2024-11-22 23:10:17,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-22 23:10:17,999 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:10:17,999 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:10:18,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-22 23:10:18,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:10:18,200 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting func_to_recursive_line_29_to_40_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-22 23:10:18,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:10:18,200 INFO L85 PathProgramCache]: Analyzing trace with hash 322785458, now seen corresponding path program 1 times [2024-11-22 23:10:18,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:10:18,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944005149] [2024-11-22 23:10:18,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:10:18,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:10:18,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:10:18,258 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-22 23:10:18,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:10:18,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944005149] [2024-11-22 23:10:18,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944005149] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:10:18,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:10:18,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 23:10:18,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808698693] [2024-11-22 23:10:18,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:10:18,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 23:10:18,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:10:18,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 23:10:18,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 23:10:18,260 INFO L87 Difference]: Start difference. First operand 257 states and 317 transitions. Second operand has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-22 23:10:18,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:10:18,315 INFO L93 Difference]: Finished difference Result 257 states and 317 transitions. [2024-11-22 23:10:18,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 23:10:18,317 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 66 [2024-11-22 23:10:18,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:10:18,318 INFO L225 Difference]: With dead ends: 257 [2024-11-22 23:10:18,318 INFO L226 Difference]: Without dead ends: 256 [2024-11-22 23:10:18,319 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-22 23:10:18,319 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 52 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 23:10:18,319 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 369 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 23:10:18,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2024-11-22 23:10:18,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 256. [2024-11-22 23:10:18,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 182 states have (on average 1.4725274725274726) internal successors, (268), 229 states have internal predecessors, (268), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-11-22 23:10:18,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 314 transitions. [2024-11-22 23:10:18,329 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 314 transitions. Word has length 66 [2024-11-22 23:10:18,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:10:18,330 INFO L471 AbstractCegarLoop]: Abstraction has 256 states and 314 transitions. [2024-11-22 23:10:18,330 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-22 23:10:18,330 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 314 transitions. [2024-11-22 23:10:18,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-22 23:10:18,330 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:10:18,330 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:10:18,330 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-22 23:10:18,330 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting func_to_recursive_line_29_to_40_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-22 23:10:18,331 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:10:18,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1416414653, now seen corresponding path program 1 times [2024-11-22 23:10:18,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:10:18,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514175103] [2024-11-22 23:10:18,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:10:18,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:10:18,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:10:18,391 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-22 23:10:18,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:10:18,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514175103] [2024-11-22 23:10:18,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514175103] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:10:18,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:10:18,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 23:10:18,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022512851] [2024-11-22 23:10:18,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:10:18,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 23:10:18,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:10:18,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 23:10:18,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 23:10:18,392 INFO L87 Difference]: Start difference. First operand 256 states and 314 transitions. Second operand has 6 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-22 23:10:18,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:10:18,447 INFO L93 Difference]: Finished difference Result 256 states and 314 transitions. [2024-11-22 23:10:18,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 23:10:18,448 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 67 [2024-11-22 23:10:18,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:10:18,449 INFO L225 Difference]: With dead ends: 256 [2024-11-22 23:10:18,449 INFO L226 Difference]: Without dead ends: 255 [2024-11-22 23:10:18,449 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-22 23:10:18,449 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 49 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 23:10:18,449 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 369 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 23:10:18,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2024-11-22 23:10:18,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2024-11-22 23:10:18,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 182 states have (on average 1.456043956043956) internal successors, (265), 228 states have internal predecessors, (265), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-11-22 23:10:18,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 311 transitions. [2024-11-22 23:10:18,456 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 311 transitions. Word has length 67 [2024-11-22 23:10:18,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:10:18,457 INFO L471 AbstractCegarLoop]: Abstraction has 255 states and 311 transitions. [2024-11-22 23:10:18,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-22 23:10:18,457 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 311 transitions. [2024-11-22 23:10:18,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-22 23:10:18,457 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:10:18,457 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:10:18,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-22 23:10:18,457 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting func_to_recursive_line_29_to_40_0Err6ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-22 23:10:18,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:10:18,458 INFO L85 PathProgramCache]: Analyzing trace with hash 959181332, now seen corresponding path program 1 times [2024-11-22 23:10:18,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:10:18,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51062068] [2024-11-22 23:10:18,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:10:18,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:10:18,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:10:18,518 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-22 23:10:18,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:10:18,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51062068] [2024-11-22 23:10:18,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51062068] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:10:18,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:10:18,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 23:10:18,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029514219] [2024-11-22 23:10:18,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:10:18,519 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 23:10:18,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:10:18,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 23:10:18,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 23:10:18,519 INFO L87 Difference]: Start difference. First operand 255 states and 311 transitions. Second operand has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-22 23:10:18,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:10:18,588 INFO L93 Difference]: Finished difference Result 255 states and 311 transitions. [2024-11-22 23:10:18,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 23:10:18,589 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 68 [2024-11-22 23:10:18,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:10:18,590 INFO L225 Difference]: With dead ends: 255 [2024-11-22 23:10:18,590 INFO L226 Difference]: Without dead ends: 254 [2024-11-22 23:10:18,590 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-22 23:10:18,591 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 44 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:10:18,591 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 456 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:10:18,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2024-11-22 23:10:18,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2024-11-22 23:10:18,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 182 states have (on average 1.4395604395604396) internal successors, (262), 227 states have internal predecessors, (262), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-11-22 23:10:18,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 308 transitions. [2024-11-22 23:10:18,600 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 308 transitions. Word has length 68 [2024-11-22 23:10:18,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:10:18,600 INFO L471 AbstractCegarLoop]: Abstraction has 254 states and 308 transitions. [2024-11-22 23:10:18,600 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.6) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-22 23:10:18,600 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 308 transitions. [2024-11-22 23:10:18,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-22 23:10:18,601 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:10:18,601 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:10:18,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-22 23:10:18,601 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting func_to_recursive_line_29_to_40_0Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-22 23:10:18,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:10:18,602 INFO L85 PathProgramCache]: Analyzing trace with hash -330149729, now seen corresponding path program 1 times [2024-11-22 23:10:18,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:10:18,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256189070] [2024-11-22 23:10:18,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:10:18,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:10:18,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:10:18,658 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-22 23:10:18,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:10:18,659 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256189070] [2024-11-22 23:10:18,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256189070] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:10:18,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:10:18,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 23:10:18,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008272667] [2024-11-22 23:10:18,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:10:18,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 23:10:18,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:10:18,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 23:10:18,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-22 23:10:18,660 INFO L87 Difference]: Start difference. First operand 254 states and 308 transitions. Second operand has 6 states, 5 states have (on average 9.8) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-22 23:10:18,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:10:18,724 INFO L93 Difference]: Finished difference Result 254 states and 308 transitions. [2024-11-22 23:10:18,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 23:10:18,724 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 69 [2024-11-22 23:10:18,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:10:18,725 INFO L225 Difference]: With dead ends: 254 [2024-11-22 23:10:18,725 INFO L226 Difference]: Without dead ends: 253 [2024-11-22 23:10:18,725 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-22 23:10:18,725 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 41 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:10:18,726 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 456 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:10:18,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2024-11-22 23:10:18,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 253. [2024-11-22 23:10:18,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 182 states have (on average 1.4230769230769231) internal successors, (259), 226 states have internal predecessors, (259), 20 states have call successors, (20), 6 states have call predecessors, (20), 9 states have return successors, (26), 20 states have call predecessors, (26), 20 states have call successors, (26) [2024-11-22 23:10:18,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 305 transitions. [2024-11-22 23:10:18,733 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 305 transitions. Word has length 69 [2024-11-22 23:10:18,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:10:18,733 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 305 transitions. [2024-11-22 23:10:18,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 9.8) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-22 23:10:18,733 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 305 transitions. [2024-11-22 23:10:18,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-11-22 23:10:18,733 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:10:18,733 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:10:18,734 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-22 23:10:18,734 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting func_to_recursive_line_29_to_40_0Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-22 23:10:18,734 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:10:18,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1644706954, now seen corresponding path program 1 times [2024-11-22 23:10:18,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:10:18,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986470521] [2024-11-22 23:10:18,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:10:18,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:10:18,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 23:10:18,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [113174443] [2024-11-22 23:10:18,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:10:18,755 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:10:18,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:10:18,757 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:10:18,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 23:10:18,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:10:18,842 INFO L255 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-22 23:10:18,844 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:10:18,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-22 23:10:18,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 13 [2024-11-22 23:10:18,958 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-22 23:10:19,014 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-22 23:10:19,032 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 23 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-22 23:10:19,032 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:10:19,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:10:19,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986470521] [2024-11-22 23:10:19,191 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 23:10:19,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113174443] [2024-11-22 23:10:19,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113174443] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:10:19,192 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-22 23:10:19,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2024-11-22 23:10:19,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815486000] [2024-11-22 23:10:19,192 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-22 23:10:19,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-22 23:10:19,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:10:19,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-22 23:10:19,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2024-11-22 23:10:19,193 INFO L87 Difference]: Start difference. First operand 253 states and 305 transitions. Second operand has 15 states, 13 states have (on average 4.153846153846154) internal successors, (54), 12 states have internal predecessors, (54), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-22 23:10:19,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:10:19,692 INFO L93 Difference]: Finished difference Result 268 states and 321 transitions. [2024-11-22 23:10:19,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-22 23:10:19,692 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 4.153846153846154) internal successors, (54), 12 states have internal predecessors, (54), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 70 [2024-11-22 23:10:19,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:10:19,693 INFO L225 Difference]: With dead ends: 268 [2024-11-22 23:10:19,693 INFO L226 Difference]: Without dead ends: 266 [2024-11-22 23:10:19,694 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 54 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=177, Invalid=753, Unknown=0, NotChecked=0, Total=930 [2024-11-22 23:10:19,694 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 274 mSDsluCounter, 986 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 1106 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 23:10:19,696 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [278 Valid, 1106 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 23:10:19,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2024-11-22 23:10:19,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 253. [2024-11-22 23:10:19,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 183 states have (on average 1.3934426229508197) internal successors, (255), 225 states have internal predecessors, (255), 20 states have call successors, (20), 6 states have call predecessors, (20), 10 states have return successors, (28), 21 states have call predecessors, (28), 20 states have call successors, (28) [2024-11-22 23:10:19,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 303 transitions. [2024-11-22 23:10:19,706 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 303 transitions. Word has length 70 [2024-11-22 23:10:19,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:10:19,706 INFO L471 AbstractCegarLoop]: Abstraction has 253 states and 303 transitions. [2024-11-22 23:10:19,706 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 4.153846153846154) internal successors, (54), 12 states have internal predecessors, (54), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-22 23:10:19,707 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 303 transitions. [2024-11-22 23:10:19,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-22 23:10:19,710 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:10:19,710 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:10:19,718 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-22 23:10:19,910 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-22 23:10:19,911 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting func_to_recursive_line_29_to_40_0Err9ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-22 23:10:19,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:10:19,911 INFO L85 PathProgramCache]: Analyzing trace with hash 553692033, now seen corresponding path program 1 times [2024-11-22 23:10:19,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:10:19,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461138638] [2024-11-22 23:10:19,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:10:19,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:10:19,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 23:10:19,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [83543548] [2024-11-22 23:10:19,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:10:19,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:10:19,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:10:19,928 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:10:19,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-22 23:10:20,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:10:20,026 INFO L255 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 66 conjuncts are in the unsatisfiable core [2024-11-22 23:10:20,028 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:10:20,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-22 23:10:20,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-22 23:10:20,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 3 [2024-11-22 23:10:20,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-22 23:10:20,397 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-22 23:10:20,397 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:10:20,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:10:20,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461138638] [2024-11-22 23:10:20,507 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 23:10:20,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83543548] [2024-11-22 23:10:20,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83543548] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:10:20,507 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-22 23:10:20,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2024-11-22 23:10:20,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145408381] [2024-11-22 23:10:20,507 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-22 23:10:20,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 23:10:20,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:10:20,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 23:10:20,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2024-11-22 23:10:20,510 INFO L87 Difference]: Start difference. First operand 253 states and 303 transitions. Second operand has 17 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 13 states have internal predecessors, (55), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-22 23:10:24,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-22 23:10:28,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-22 23:10:33,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-22 23:10:33,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:10:33,053 INFO L93 Difference]: Finished difference Result 344 states and 380 transitions. [2024-11-22 23:10:33,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-22 23:10:33,056 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 13 states have internal predecessors, (55), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 71 [2024-11-22 23:10:33,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:10:33,057 INFO L225 Difference]: With dead ends: 344 [2024-11-22 23:10:33,057 INFO L226 Difference]: Without dead ends: 343 [2024-11-22 23:10:33,058 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 54 SyntacticMatches, 5 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=142, Invalid=670, Unknown=0, NotChecked=0, Total=812 [2024-11-22 23:10:33,058 INFO L432 NwaCegarLoop]: 153 mSDtfsCounter, 247 mSDsluCounter, 1529 mSDsCounter, 0 mSdLazyCounter, 712 mSolverCounterSat, 21 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 1682 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 712 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2024-11-22 23:10:33,058 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 1682 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 712 Invalid, 3 Unknown, 0 Unchecked, 12.4s Time] [2024-11-22 23:10:33,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2024-11-22 23:10:33,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 271. [2024-11-22 23:10:33,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 198 states have (on average 1.4090909090909092) internal successors, (279), 240 states have internal predecessors, (279), 22 states have call successors, (22), 7 states have call predecessors, (22), 11 states have return successors, (30), 23 states have call predecessors, (30), 22 states have call successors, (30) [2024-11-22 23:10:33,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 331 transitions. [2024-11-22 23:10:33,068 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 331 transitions. Word has length 71 [2024-11-22 23:10:33,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:10:33,068 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 331 transitions. [2024-11-22 23:10:33,068 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 3.6666666666666665) internal successors, (55), 13 states have internal predecessors, (55), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-22 23:10:33,068 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 331 transitions. [2024-11-22 23:10:33,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-22 23:10:33,069 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:10:33,069 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:10:33,076 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-22 23:10:33,273 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-22 23:10:33,274 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-22 23:10:33,274 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:10:33,274 INFO L85 PathProgramCache]: Analyzing trace with hash 656013135, now seen corresponding path program 1 times [2024-11-22 23:10:33,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:10:33,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446845705] [2024-11-22 23:10:33,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:10:33,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:10:33,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 23:10:33,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1033578076] [2024-11-22 23:10:33,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:10:33,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:10:33,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:10:33,290 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:10:33,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-22 23:10:33,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:10:33,369 INFO L255 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-22 23:10:33,370 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:10:33,377 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-22 23:10:33,443 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-11-22 23:10:33,449 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-22 23:10:33,449 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 23:10:33,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:10:33,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446845705] [2024-11-22 23:10:33,449 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 23:10:33,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1033578076] [2024-11-22 23:10:33,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1033578076] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:10:33,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:10:33,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 23:10:33,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192162554] [2024-11-22 23:10:33,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:10:33,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 23:10:33,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:10:33,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 23:10:33,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 23:10:33,450 INFO L87 Difference]: Start difference. First operand 271 states and 331 transitions. Second operand has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-22 23:10:37,487 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-22 23:10:41,547 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-22 23:10:45,551 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-22 23:10:45,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:10:45,572 INFO L93 Difference]: Finished difference Result 296 states and 355 transitions. [2024-11-22 23:10:45,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 23:10:45,572 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 72 [2024-11-22 23:10:45,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:10:45,573 INFO L225 Difference]: With dead ends: 296 [2024-11-22 23:10:45,574 INFO L226 Difference]: Without dead ends: 295 [2024-11-22 23:10:45,574 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 65 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 23:10:45,574 INFO L432 NwaCegarLoop]: 89 mSDtfsCounter, 112 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 18 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:10:45,575 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 342 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 126 Invalid, 4 Unknown, 0 Unchecked, 12.1s Time] [2024-11-22 23:10:45,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2024-11-22 23:10:45,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 273. [2024-11-22 23:10:45,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 200 states have (on average 1.405) internal successors, (281), 241 states have internal predecessors, (281), 22 states have call successors, (22), 7 states have call predecessors, (22), 11 states have return successors, (30), 24 states have call predecessors, (30), 22 states have call successors, (30) [2024-11-22 23:10:45,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 333 transitions. [2024-11-22 23:10:45,588 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 333 transitions. Word has length 72 [2024-11-22 23:10:45,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:10:45,588 INFO L471 AbstractCegarLoop]: Abstraction has 273 states and 333 transitions. [2024-11-22 23:10:45,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.2) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-22 23:10:45,588 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 333 transitions. [2024-11-22 23:10:45,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-22 23:10:45,589 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:10:45,589 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:10:45,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-22 23:10:45,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-22 23:10:45,789 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-22 23:10:45,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:10:45,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1138429158, now seen corresponding path program 1 times [2024-11-22 23:10:45,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:10:45,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375732069] [2024-11-22 23:10:45,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:10:45,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:10:45,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 23:10:45,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [279961313] [2024-11-22 23:10:45,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:10:45,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:10:45,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:10:45,811 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:10:45,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-22 23:10:45,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:10:45,897 INFO L255 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-22 23:10:45,899 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:10:45,901 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-22 23:10:45,978 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-22 23:10:45,979 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 23:10:45,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:10:45,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375732069] [2024-11-22 23:10:45,979 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 23:10:45,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279961313] [2024-11-22 23:10:45,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279961313] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:10:45,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:10:45,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 23:10:45,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898552366] [2024-11-22 23:10:45,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:10:45,979 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 23:10:45,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:10:45,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 23:10:45,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 23:10:45,983 INFO L87 Difference]: Start difference. First operand 273 states and 333 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-22 23:10:46,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:10:46,115 INFO L93 Difference]: Finished difference Result 295 states and 354 transitions. [2024-11-22 23:10:46,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 23:10:46,115 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 73 [2024-11-22 23:10:46,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:10:46,116 INFO L225 Difference]: With dead ends: 295 [2024-11-22 23:10:46,116 INFO L226 Difference]: Without dead ends: 294 [2024-11-22 23:10:46,116 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 66 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-22 23:10:46,117 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 109 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 18 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:10:46,117 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 344 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 123 Invalid, 3 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:10:46,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2024-11-22 23:10:46,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 274. [2024-11-22 23:10:46,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 201 states have (on average 1.4029850746268657) internal successors, (282), 242 states have internal predecessors, (282), 22 states have call successors, (22), 7 states have call predecessors, (22), 11 states have return successors, (30), 24 states have call predecessors, (30), 22 states have call successors, (30) [2024-11-22 23:10:46,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 334 transitions. [2024-11-22 23:10:46,126 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 334 transitions. Word has length 73 [2024-11-22 23:10:46,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:10:46,126 INFO L471 AbstractCegarLoop]: Abstraction has 274 states and 334 transitions. [2024-11-22 23:10:46,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-22 23:10:46,127 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 334 transitions. [2024-11-22 23:10:46,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-22 23:10:46,127 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:10:46,127 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:10:46,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-22 23:10:46,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-22 23:10:46,332 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-22 23:10:46,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:10:46,332 INFO L85 PathProgramCache]: Analyzing trace with hash -931565391, now seen corresponding path program 1 times [2024-11-22 23:10:46,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:10:46,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566094235] [2024-11-22 23:10:46,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:10:46,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:10:46,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:10:46,408 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-22 23:10:46,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:10:46,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566094235] [2024-11-22 23:10:46,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566094235] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:10:46,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:10:46,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 23:10:46,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228284328] [2024-11-22 23:10:46,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:10:46,409 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 23:10:46,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:10:46,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 23:10:46,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 23:10:46,409 INFO L87 Difference]: Start difference. First operand 274 states and 334 transitions. Second operand has 5 states, 4 states have (on average 12.5) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-22 23:10:46,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:10:46,503 INFO L93 Difference]: Finished difference Result 288 states and 353 transitions. [2024-11-22 23:10:46,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 23:10:46,504 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 12.5) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 74 [2024-11-22 23:10:46,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:10:46,505 INFO L225 Difference]: With dead ends: 288 [2024-11-22 23:10:46,505 INFO L226 Difference]: Without dead ends: 286 [2024-11-22 23:10:46,505 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 23:10:46,505 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 38 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:10:46,506 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 292 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:10:46,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2024-11-22 23:10:46,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 276. [2024-11-22 23:10:46,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 203 states have (on average 1.3990147783251232) internal successors, (284), 244 states have internal predecessors, (284), 22 states have call successors, (22), 7 states have call predecessors, (22), 11 states have return successors, (30), 24 states have call predecessors, (30), 22 states have call successors, (30) [2024-11-22 23:10:46,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 336 transitions. [2024-11-22 23:10:46,516 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 336 transitions. Word has length 74 [2024-11-22 23:10:46,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:10:46,516 INFO L471 AbstractCegarLoop]: Abstraction has 276 states and 336 transitions. [2024-11-22 23:10:46,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 12.5) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-22 23:10:46,516 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 336 transitions. [2024-11-22 23:10:46,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-22 23:10:46,517 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:10:46,517 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:10:46,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-22 23:10:46,517 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-22 23:10:46,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:10:46,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1881138669, now seen corresponding path program 1 times [2024-11-22 23:10:46,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:10:46,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433969216] [2024-11-22 23:10:46,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:10:46,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:10:46,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 23:10:46,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1064085174] [2024-11-22 23:10:46,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:10:46,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:10:46,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:10:46,539 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:10:46,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-22 23:10:46,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:10:46,623 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-22 23:10:46,625 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:10:46,628 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-22 23:10:46,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-22 23:10:46,835 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-22 23:10:46,836 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 23:10:46,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:10:46,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433969216] [2024-11-22 23:10:46,836 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 23:10:46,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064085174] [2024-11-22 23:10:46,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064085174] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:10:46,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:10:46,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 23:10:46,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749134989] [2024-11-22 23:10:46,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:10:46,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 23:10:46,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:10:46,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 23:10:46,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-22 23:10:46,837 INFO L87 Difference]: Start difference. First operand 276 states and 336 transitions. Second operand has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 7 states have internal predecessors, (55), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-22 23:10:47,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:10:47,025 INFO L93 Difference]: Finished difference Result 292 states and 351 transitions. [2024-11-22 23:10:47,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 23:10:47,025 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 7 states have internal predecessors, (55), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 76 [2024-11-22 23:10:47,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:10:47,026 INFO L225 Difference]: With dead ends: 292 [2024-11-22 23:10:47,026 INFO L226 Difference]: Without dead ends: 290 [2024-11-22 23:10:47,027 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 68 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-11-22 23:10:47,027 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 92 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:10:47,027 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 394 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:10:47,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2024-11-22 23:10:47,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 278. [2024-11-22 23:10:47,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 205 states have (on average 1.395121951219512) internal successors, (286), 246 states have internal predecessors, (286), 22 states have call successors, (22), 7 states have call predecessors, (22), 11 states have return successors, (30), 24 states have call predecessors, (30), 22 states have call successors, (30) [2024-11-22 23:10:47,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 338 transitions. [2024-11-22 23:10:47,037 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 338 transitions. Word has length 76 [2024-11-22 23:10:47,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:10:47,038 INFO L471 AbstractCegarLoop]: Abstraction has 278 states and 338 transitions. [2024-11-22 23:10:47,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.166666666666666) internal successors, (55), 7 states have internal predecessors, (55), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-22 23:10:47,038 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 338 transitions. [2024-11-22 23:10:47,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-22 23:10:47,038 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:10:47,038 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:10:47,049 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-22 23:10:47,239 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:10:47,239 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting func_to_recursive_line_29_to_40_0Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-22 23:10:47,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:10:47,240 INFO L85 PathProgramCache]: Analyzing trace with hash 865008927, now seen corresponding path program 1 times [2024-11-22 23:10:47,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:10:47,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306370498] [2024-11-22 23:10:47,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:10:47,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:10:47,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 23:10:47,263 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [772908451] [2024-11-22 23:10:47,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:10:47,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:10:47,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:10:47,265 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:10:47,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-22 23:10:47,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:10:47,361 INFO L255 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-11-22 23:10:47,363 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:10:47,367 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-22 23:10:47,693 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 11 [2024-11-22 23:10:47,783 INFO L349 Elim1Store]: treesize reduction 20, result has 58.3 percent of original size [2024-11-22 23:10:47,784 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 54 treesize of output 50 [2024-11-22 23:10:47,837 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 7 treesize of output 3 [2024-11-22 23:10:48,069 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 23:10:48,069 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 32 [2024-11-22 23:10:48,085 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 10 proven. 43 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 23:10:48,085 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:10:48,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:10:48,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306370498] [2024-11-22 23:10:48,140 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 23:10:48,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772908451] [2024-11-22 23:10:48,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772908451] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:10:48,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-22 23:10:48,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2024-11-22 23:10:48,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394072528] [2024-11-22 23:10:48,141 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-22 23:10:48,141 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-22 23:10:48,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:10:48,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-22 23:10:48,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2024-11-22 23:10:48,141 INFO L87 Difference]: Start difference. First operand 278 states and 338 transitions. Second operand has 22 states, 20 states have (on average 3.15) internal successors, (63), 18 states have internal predecessors, (63), 6 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 2 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-22 23:10:52,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-22 23:10:56,476 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-22 23:11:00,484 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-22 23:11:05,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-22 23:11:05,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:11:05,324 INFO L93 Difference]: Finished difference Result 298 states and 355 transitions. [2024-11-22 23:11:05,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-22 23:11:05,324 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 3.15) internal successors, (63), 18 states have internal predecessors, (63), 6 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 2 states have call predecessors, (5), 4 states have call successors, (5) Word has length 78 [2024-11-22 23:11:05,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:11:05,325 INFO L225 Difference]: With dead ends: 298 [2024-11-22 23:11:05,325 INFO L226 Difference]: Without dead ends: 297 [2024-11-22 23:11:05,326 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 54 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=354, Invalid=1716, Unknown=0, NotChecked=0, Total=2070 [2024-11-22 23:11:05,326 INFO L432 NwaCegarLoop]: 133 mSDtfsCounter, 400 mSDsluCounter, 1389 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 46 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 1522 SdHoareTripleChecker+Invalid, 1035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.8s IncrementalHoareTripleChecker+Time [2024-11-22 23:11:05,327 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 1522 Invalid, 1035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 985 Invalid, 4 Unknown, 0 Unchecked, 16.8s Time] [2024-11-22 23:11:05,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2024-11-22 23:11:05,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 285. [2024-11-22 23:11:05,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 211 states have (on average 1.3696682464454977) internal successors, (289), 251 states have internal predecessors, (289), 22 states have call successors, (22), 9 states have call predecessors, (22), 13 states have return successors, (30), 24 states have call predecessors, (30), 22 states have call successors, (30) [2024-11-22 23:11:05,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 341 transitions. [2024-11-22 23:11:05,342 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 341 transitions. Word has length 78 [2024-11-22 23:11:05,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:11:05,343 INFO L471 AbstractCegarLoop]: Abstraction has 285 states and 341 transitions. [2024-11-22 23:11:05,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 3.15) internal successors, (63), 18 states have internal predecessors, (63), 6 states have call successors, (7), 6 states have call predecessors, (7), 4 states have return successors, (5), 2 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-22 23:11:05,343 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 341 transitions. [2024-11-22 23:11:05,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2024-11-22 23:11:05,344 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:11:05,344 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:11:05,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-22 23:11:05,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-22 23:11:05,544 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-22 23:11:05,545 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:11:05,545 INFO L85 PathProgramCache]: Analyzing trace with hash 406975349, now seen corresponding path program 1 times [2024-11-22 23:11:05,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:11:05,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256368918] [2024-11-22 23:11:05,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:11:05,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:11:05,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:11:05,638 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-22 23:11:05,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:11:05,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256368918] [2024-11-22 23:11:05,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256368918] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 23:11:05,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 23:11:05,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 23:11:05,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846135168] [2024-11-22 23:11:05,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 23:11:05,639 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 23:11:05,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:11:05,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 23:11:05,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 23:11:05,640 INFO L87 Difference]: Start difference. First operand 285 states and 341 transitions. Second operand has 5 states, 4 states have (on average 13.5) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-22 23:11:05,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:11:05,737 INFO L93 Difference]: Finished difference Result 293 states and 352 transitions. [2024-11-22 23:11:05,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 23:11:05,738 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.5) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 78 [2024-11-22 23:11:05,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:11:05,739 INFO L225 Difference]: With dead ends: 293 [2024-11-22 23:11:05,739 INFO L226 Difference]: Without dead ends: 291 [2024-11-22 23:11:05,739 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-22 23:11:05,739 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 27 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 23:11:05,739 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 305 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 23:11:05,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2024-11-22 23:11:05,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 287. [2024-11-22 23:11:05,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 213 states have (on average 1.3661971830985915) internal successors, (291), 253 states have internal predecessors, (291), 22 states have call successors, (22), 9 states have call predecessors, (22), 13 states have return successors, (30), 24 states have call predecessors, (30), 22 states have call successors, (30) [2024-11-22 23:11:05,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 343 transitions. [2024-11-22 23:11:05,754 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 343 transitions. Word has length 78 [2024-11-22 23:11:05,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:11:05,754 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 343 transitions. [2024-11-22 23:11:05,754 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.5) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-22 23:11:05,754 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 343 transitions. [2024-11-22 23:11:05,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-22 23:11:05,755 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:11:05,755 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:11:05,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-22 23:11:05,755 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting func_to_recursive_line_29_to_40_0Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-22 23:11:05,755 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:11:05,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1045473022, now seen corresponding path program 1 times [2024-11-22 23:11:05,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:11:05,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973621697] [2024-11-22 23:11:05,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:11:05,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:11:05,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-22 23:11:05,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [971021488] [2024-11-22 23:11:05,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:11:05,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:11:05,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:11:05,773 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:11:05,774 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-22 23:11:05,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:11:05,882 INFO L255 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 76 conjuncts are in the unsatisfiable core [2024-11-22 23:11:05,884 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:11:05,888 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-22 23:11:05,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-22 23:11:06,146 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-22 23:11:06,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-22 23:11:06,373 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-22 23:11:06,373 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:11:06,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:11:06,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973621697] [2024-11-22 23:11:06,538 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-22 23:11:06,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971021488] [2024-11-22 23:11:06,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [971021488] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:11:06,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-22 23:11:06,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2024-11-22 23:11:06,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482205577] [2024-11-22 23:11:06,539 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-22 23:11:06,539 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-22 23:11:06,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:11:06,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-22 23:11:06,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2024-11-22 23:11:06,540 INFO L87 Difference]: Start difference. First operand 287 states and 343 transitions. Second operand has 19 states, 17 states have (on average 3.764705882352941) internal successors, (64), 17 states have internal predecessors, (64), 6 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (5), 2 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-22 23:11:07,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 23:11:07,203 INFO L93 Difference]: Finished difference Result 344 states and 376 transitions. [2024-11-22 23:11:07,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-22 23:11:07,203 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.764705882352941) internal successors, (64), 17 states have internal predecessors, (64), 6 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (5), 2 states have call predecessors, (5), 4 states have call successors, (5) Word has length 79 [2024-11-22 23:11:07,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 23:11:07,204 INFO L225 Difference]: With dead ends: 344 [2024-11-22 23:11:07,204 INFO L226 Difference]: Without dead ends: 343 [2024-11-22 23:11:07,205 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 57 SyntacticMatches, 6 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=122, Invalid=690, Unknown=0, NotChecked=0, Total=812 [2024-11-22 23:11:07,205 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 244 mSDsluCounter, 1247 mSDsCounter, 0 mSdLazyCounter, 842 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 1376 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 23:11:07,205 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 1376 Invalid, 863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 842 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 23:11:07,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2024-11-22 23:11:07,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 287. [2024-11-22 23:11:07,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 213 states have (on average 1.3615023474178405) internal successors, (290), 253 states have internal predecessors, (290), 22 states have call successors, (22), 9 states have call predecessors, (22), 13 states have return successors, (30), 24 states have call predecessors, (30), 22 states have call successors, (30) [2024-11-22 23:11:07,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 342 transitions. [2024-11-22 23:11:07,217 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 342 transitions. Word has length 79 [2024-11-22 23:11:07,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 23:11:07,218 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 342 transitions. [2024-11-22 23:11:07,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.764705882352941) internal successors, (64), 17 states have internal predecessors, (64), 6 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (5), 2 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-22 23:11:07,218 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 342 transitions. [2024-11-22 23:11:07,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2024-11-22 23:11:07,218 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 23:11:07,218 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 23:11:07,226 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-22 23:11:07,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:11:07,422 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting func_to_recursive_line_29_to_40_0Err12ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_29_to_40_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_29_to_40_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 48 more)] === [2024-11-22 23:11:07,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 23:11:07,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1950074623, now seen corresponding path program 1 times [2024-11-22 23:11:07,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 23:11:07,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728135412] [2024-11-22 23:11:07,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:11:07,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 23:11:07,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:11:07,753 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-22 23:11:07,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 23:11:07,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728135412] [2024-11-22 23:11:07,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728135412] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 23:11:07,754 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480637669] [2024-11-22 23:11:07,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 23:11:07,754 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 23:11:07,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 23:11:07,756 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 23:11:07,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-22 23:11:07,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 23:11:07,847 INFO L255 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-22 23:11:07,849 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 23:11:07,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-22 23:11:07,854 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-22 23:11:07,896 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 7 treesize of output 3 [2024-11-22 23:11:08,592 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 23:11:08,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 31 [2024-11-22 23:11:08,650 INFO L349 Elim1Store]: treesize reduction 33, result has 31.3 percent of original size [2024-11-22 23:11:08,650 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 30 treesize of output 22 [2024-11-22 23:11:08,756 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-22 23:11:08,758 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 2 proven. 49 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-22 23:11:08,758 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 23:11:09,032 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 16 treesize of output 12 [2024-11-22 23:11:09,128 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-22 23:11:09,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480637669] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 23:11:09,128 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 23:11:09,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 16, 13] total 33 [2024-11-22 23:11:09,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198645831] [2024-11-22 23:11:09,129 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 23:11:09,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2024-11-22 23:11:09,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 23:11:09,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2024-11-22 23:11:09,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=989, Unknown=0, NotChecked=0, Total=1122 [2024-11-22 23:11:09,130 INFO L87 Difference]: Start difference. First operand 287 states and 342 transitions. Second operand has 34 states, 30 states have (on average 5.166666666666667) internal successors, (155), 28 states have internal predecessors, (155), 10 states have call successors, (20), 9 states have call predecessors, (20), 5 states have return successors, (15), 5 states have call predecessors, (15), 7 states have call successors, (15) [2024-11-22 23:11:13,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-22 23:11:17,459 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-22 23:11:21,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-22 23:11:26,177 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-22 23:11:30,417 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]