./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_loop-simple/recursified_nested_3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a046e57d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_loop-simple/recursified_nested_3.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 9a8e2b8a66923dd7d46d9db92fbd8b38c75eb8108da5237ec87b15cd1ae67985 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 14:01:31,473 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 14:01:31,521 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-13 14:01:31,526 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 14:01:31,526 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 14:01:31,548 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 14:01:31,550 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 14:01:31,550 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 14:01:31,551 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 14:01:31,554 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 14:01:31,554 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 14:01:31,554 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 14:01:31,554 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 14:01:31,555 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 14:01:31,555 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 14:01:31,555 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 14:01:31,555 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 14:01:31,556 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 14:01:31,556 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 14:01:31,557 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 14:01:31,557 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 14:01:31,557 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 14:01:31,557 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 14:01:31,557 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 14:01:31,558 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 14:01:31,558 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-13 14:01:31,558 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 14:01:31,558 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 14:01:31,558 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 14:01:31,559 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 14:01:31,559 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 14:01:31,559 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 14:01:31,559 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 14:01:31,560 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 14:01:31,560 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 14:01:31,560 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 14:01:31,560 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 14:01:31,561 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 14:01:31,561 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 14:01:31,561 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 14:01:31,561 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 14:01:31,561 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 14:01:31,562 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 14:01:31,562 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 14:01:31,562 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9a8e2b8a66923dd7d46d9db92fbd8b38c75eb8108da5237ec87b15cd1ae67985 [2024-10-13 14:01:31,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 14:01:31,806 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 14:01:31,809 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 14:01:31,809 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 14:01:31,810 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 14:01:31,811 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_loop-simple/recursified_nested_3.c [2024-10-13 14:01:32,973 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 14:01:33,155 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 14:01:33,155 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_loop-simple/recursified_nested_3.c [2024-10-13 14:01:33,160 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93f48ac07/11aeefb2061a483397c21887f188f726/FLAGb48df5ba5 [2024-10-13 14:01:33,170 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93f48ac07/11aeefb2061a483397c21887f188f726 [2024-10-13 14:01:33,172 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 14:01:33,173 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 14:01:33,174 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 14:01:33,174 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 14:01:33,178 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 14:01:33,178 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:01:33" (1/1) ... [2024-10-13 14:01:33,180 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@621943bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:33, skipping insertion in model container [2024-10-13 14:01:33,180 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:01:33" (1/1) ... [2024-10-13 14:01:33,196 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 14:01:33,314 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 14:01:33,322 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 14:01:33,337 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 14:01:33,353 INFO L204 MainTranslator]: Completed translation [2024-10-13 14:01:33,354 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:33 WrapperNode [2024-10-13 14:01:33,354 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 14:01:33,355 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 14:01:33,355 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 14:01:33,355 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 14:01:33,360 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:33" (1/1) ... [2024-10-13 14:01:33,369 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:33" (1/1) ... [2024-10-13 14:01:33,384 INFO L138 Inliner]: procedures = 14, calls = 41, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 53 [2024-10-13 14:01:33,384 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 14:01:33,385 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 14:01:33,385 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 14:01:33,385 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 14:01:33,392 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:33" (1/1) ... [2024-10-13 14:01:33,393 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:33" (1/1) ... [2024-10-13 14:01:33,394 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:33" (1/1) ... [2024-10-13 14:01:33,408 INFO L175 MemorySlicer]: Split 20 memory accesses to 4 slices as follows [2, 6, 6, 6]. 30 percent of accesses are in the largest equivalence class. The 5 initializations are split as follows [2, 1, 1, 1]. The 6 writes are split as follows [0, 2, 2, 2]. [2024-10-13 14:01:33,408 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:33" (1/1) ... [2024-10-13 14:01:33,408 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:33" (1/1) ... [2024-10-13 14:01:33,412 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:33" (1/1) ... [2024-10-13 14:01:33,413 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:33" (1/1) ... [2024-10-13 14:01:33,414 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:33" (1/1) ... [2024-10-13 14:01:33,415 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:33" (1/1) ... [2024-10-13 14:01:33,416 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 14:01:33,417 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 14:01:33,417 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 14:01:33,417 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 14:01:33,418 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:33" (1/1) ... [2024-10-13 14:01:33,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 14:01:33,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:01:33,445 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-13 14:01:33,455 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-13 14:01:33,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 14:01:33,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 14:01:33,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 14:01:33,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-13 14:01:33,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-13 14:01:33,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-13 14:01:33,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 14:01:33,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 14:01:33,489 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-13 14:01:33,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-13 14:01:33,490 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_23_to_23_0 [2024-10-13 14:01:33,490 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_23_to_23_0 [2024-10-13 14:01:33,490 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_22_to_23_0 [2024-10-13 14:01:33,490 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_22_to_23_0 [2024-10-13 14:01:33,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 14:01:33,490 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 14:01:33,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 14:01:33,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 14:01:33,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-13 14:01:33,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-13 14:01:33,490 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_21_to_22_0 [2024-10-13 14:01:33,491 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_21_to_22_0 [2024-10-13 14:01:33,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-13 14:01:33,568 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 14:01:33,570 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 14:01:33,789 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2024-10-13 14:01:33,789 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 14:01:33,820 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 14:01:33,821 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-13 14:01:33,821 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:01:33 BoogieIcfgContainer [2024-10-13 14:01:33,822 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 14:01:33,824 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 14:01:33,824 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 14:01:33,827 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 14:01:33,827 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:01:33" (1/3) ... [2024-10-13 14:01:33,828 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fa5d15e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:01:33, skipping insertion in model container [2024-10-13 14:01:33,828 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:01:33" (2/3) ... [2024-10-13 14:01:33,829 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fa5d15e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:01:33, skipping insertion in model container [2024-10-13 14:01:33,829 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:01:33" (3/3) ... [2024-10-13 14:01:33,831 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_nested_3.c [2024-10-13 14:01:33,843 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 14:01:33,843 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2024-10-13 14:01:33,883 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 14:01:33,888 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;@7baa36da, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 14:01:33,888 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-10-13 14:01:33,893 INFO L276 IsEmpty]: Start isEmpty. Operand has 40 states, 24 states have (on average 1.5) internal successors, (36), 33 states have internal predecessors, (36), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-13 14:01:33,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-10-13 14:01:33,898 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:01:33,899 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:01:33,899 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_23_to_23_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_23_to_23_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_23_to_23_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-10-13 14:01:33,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:01:33,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1687961075, now seen corresponding path program 1 times [2024-10-13 14:01:33,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:01:33,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269654228] [2024-10-13 14:01:33,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:01:33,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:01:34,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:34,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 14:01:34,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:01:34,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269654228] [2024-10-13 14:01:34,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269654228] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:01:34,291 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:01:34,292 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 14:01:34,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725427614] [2024-10-13 14:01:34,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:01:34,296 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 14:01:34,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:01:34,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 14:01:34,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-13 14:01:34,322 INFO L87 Difference]: Start difference. First operand has 40 states, 24 states have (on average 1.5) internal successors, (36), 33 states have internal predecessors, (36), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 6 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 14:01:34,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:01:34,446 INFO L93 Difference]: Finished difference Result 56 states and 65 transitions. [2024-10-13 14:01:34,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 14:01:34,448 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-10-13 14:01:34,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:01:34,455 INFO L225 Difference]: With dead ends: 56 [2024-10-13 14:01:34,455 INFO L226 Difference]: Without dead ends: 43 [2024-10-13 14:01:34,458 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-13 14:01:34,461 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 15 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 14:01:34,462 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 185 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 14:01:34,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-10-13 14:01:34,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 37. [2024-10-13 14:01:34,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 30 states have internal predecessors, (31), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-10-13 14:01:34,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2024-10-13 14:01:34,497 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 11 [2024-10-13 14:01:34,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:01:34,497 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2024-10-13 14:01:34,497 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 14:01:34,498 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2024-10-13 14:01:34,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-10-13 14:01:34,498 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:01:34,499 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:01:34,499 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-13 14:01:34,499 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_21_to_22_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_23_to_23_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_23_to_23_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-10-13 14:01:34,500 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:01:34,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1680998632, now seen corresponding path program 1 times [2024-10-13 14:01:34,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:01:34,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776665172] [2024-10-13 14:01:34,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:01:34,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:01:34,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:34,670 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-13 14:01:34,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:34,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 14:01:34,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:01:34,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776665172] [2024-10-13 14:01:34,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776665172] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:01:34,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:01:34,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 14:01:34,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483421079] [2024-10-13 14:01:34,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:01:34,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 14:01:34,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:01:34,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 14:01:34,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-13 14:01:34,684 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-13 14:01:34,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:01:34,849 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2024-10-13 14:01:34,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 14:01:34,850 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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 11 [2024-10-13 14:01:34,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:01:34,852 INFO L225 Difference]: With dead ends: 49 [2024-10-13 14:01:34,852 INFO L226 Difference]: Without dead ends: 47 [2024-10-13 14:01:34,853 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-10-13 14:01:34,854 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 19 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 14:01:34,854 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 85 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 14:01:34,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-10-13 14:01:34,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2024-10-13 14:01:34,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 35 states have internal predecessors, (37), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-10-13 14:01:34,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2024-10-13 14:01:34,866 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 11 [2024-10-13 14:01:34,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:01:34,866 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2024-10-13 14:01:34,867 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-13 14:01:34,867 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2024-10-13 14:01:34,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-13 14:01:34,867 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:01:34,867 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:01:34,868 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-13 14:01:34,868 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_22_to_23_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_23_to_23_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_23_to_23_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-10-13 14:01:34,869 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:01:34,869 INFO L85 PathProgramCache]: Analyzing trace with hash -564507169, now seen corresponding path program 1 times [2024-10-13 14:01:34,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:01:34,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178252983] [2024-10-13 14:01:34,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:01:34,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:01:34,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:34,953 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-13 14:01:34,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:34,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 14:01:34,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:01:34,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178252983] [2024-10-13 14:01:34,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178252983] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:01:34,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:01:34,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 14:01:34,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883558815] [2024-10-13 14:01:34,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:01:34,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 14:01:34,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:01:34,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 14:01:34,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-13 14:01:34,994 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-13 14:01:35,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:01:35,071 INFO L93 Difference]: Finished difference Result 96 states and 112 transitions. [2024-10-13 14:01:35,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 14:01:35,072 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2024-10-13 14:01:35,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:01:35,073 INFO L225 Difference]: With dead ends: 96 [2024-10-13 14:01:35,073 INFO L226 Difference]: Without dead ends: 54 [2024-10-13 14:01:35,073 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-10-13 14:01:35,074 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 17 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 14:01:35,074 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 103 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 14:01:35,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-10-13 14:01:35,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 43. [2024-10-13 14:01:35,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 33 states have internal predecessors, (35), 7 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-13 14:01:35,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2024-10-13 14:01:35,082 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 14 [2024-10-13 14:01:35,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:01:35,083 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2024-10-13 14:01:35,083 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-10-13 14:01:35,083 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2024-10-13 14:01:35,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-10-13 14:01:35,083 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:01:35,083 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:01:35,084 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-13 14:01:35,084 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_23_to_23_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_23_to_23_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_23_to_23_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-10-13 14:01:35,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:01:35,084 INFO L85 PathProgramCache]: Analyzing trace with hash 789392049, now seen corresponding path program 1 times [2024-10-13 14:01:35,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:01:35,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869182554] [2024-10-13 14:01:35,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:01:35,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:01:35,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:35,368 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 14:01:35,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:01:35,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869182554] [2024-10-13 14:01:35,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869182554] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 14:01:35,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696132792] [2024-10-13 14:01:35,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:01:35,369 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:01:35,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:01:35,371 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 14:01:35,372 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-13 14:01:35,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:35,435 INFO L255 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-10-13 14:01:35,439 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:01:35,470 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 14:01:35,520 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 [2024-10-13 14:01:35,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-13 14:01:35,534 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 14:01:35,534 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 14:01:35,642 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-13 14:01:35,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696132792] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-13 14:01:35,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-13 14:01:35,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9, 8] total 17 [2024-10-13 14:01:35,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862272061] [2024-10-13 14:01:35,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:01:35,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-13 14:01:35,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:01:35,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-13 14:01:35,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2024-10-13 14:01:35,647 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 14:01:35,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:01:35,793 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2024-10-13 14:01:35,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-10-13 14:01:35,794 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-10-13 14:01:35,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:01:35,795 INFO L225 Difference]: With dead ends: 46 [2024-10-13 14:01:35,795 INFO L226 Difference]: Without dead ends: 45 [2024-10-13 14:01:35,795 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=450, Unknown=0, NotChecked=0, Total=552 [2024-10-13 14:01:35,796 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 17 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 14:01:35,796 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 164 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 14:01:35,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-10-13 14:01:35,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2024-10-13 14:01:35,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 32 states have internal predecessors, (34), 7 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-13 14:01:35,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2024-10-13 14:01:35,801 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 16 [2024-10-13 14:01:35,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:01:35,801 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2024-10-13 14:01:35,801 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 7 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 14:01:35,801 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2024-10-13 14:01:35,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-13 14:01:35,802 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:01:35,802 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:01:35,815 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-13 14:01:36,002 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 [2024-10-13 14:01:36,004 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_23_to_23_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_23_to_23_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_23_to_23_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-10-13 14:01:36,004 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:01:36,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1298650220, now seen corresponding path program 1 times [2024-10-13 14:01:36,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:01:36,005 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080223282] [2024-10-13 14:01:36,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:01:36,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:01:36,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:36,050 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-13 14:01:36,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:01:36,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080223282] [2024-10-13 14:01:36,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080223282] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:01:36,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:01:36,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-13 14:01:36,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462521270] [2024-10-13 14:01:36,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:01:36,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-13 14:01:36,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:01:36,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-13 14:01:36,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 14:01:36,052 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 14:01:36,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:01:36,066 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2024-10-13 14:01:36,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-13 14:01:36,066 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-10-13 14:01:36,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:01:36,067 INFO L225 Difference]: With dead ends: 42 [2024-10-13 14:01:36,067 INFO L226 Difference]: Without dead ends: 41 [2024-10-13 14:01:36,068 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-13 14:01:36,068 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 0 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 14:01:36,069 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 14:01:36,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2024-10-13 14:01:36,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2024-10-13 14:01:36,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 25 states have (on average 1.24) internal successors, (31), 29 states have internal predecessors, (31), 7 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2024-10-13 14:01:36,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2024-10-13 14:01:36,078 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 17 [2024-10-13 14:01:36,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:01:36,078 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2024-10-13 14:01:36,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (4), 1 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 14:01:36,079 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2024-10-13 14:01:36,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-13 14:01:36,081 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:01:36,081 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:01:36,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-13 14:01:36,082 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_22_to_23_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_23_to_23_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_23_to_23_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-10-13 14:01:36,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:01:36,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1900896519, now seen corresponding path program 1 times [2024-10-13 14:01:36,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:01:36,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021018874] [2024-10-13 14:01:36,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:01:36,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:01:36,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:36,178 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-13 14:01:36,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:36,184 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-13 14:01:36,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:36,185 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-13 14:01:36,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:01:36,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021018874] [2024-10-13 14:01:36,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021018874] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:01:36,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:01:36,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 14:01:36,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134533315] [2024-10-13 14:01:36,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:01:36,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 14:01:36,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:01:36,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 14:01:36,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-13 14:01:36,187 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand has 7 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-13 14:01:36,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:01:36,287 INFO L93 Difference]: Finished difference Result 60 states and 68 transitions. [2024-10-13 14:01:36,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 14:01:36,287 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 21 [2024-10-13 14:01:36,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:01:36,288 INFO L225 Difference]: With dead ends: 60 [2024-10-13 14:01:36,288 INFO L226 Difference]: Without dead ends: 58 [2024-10-13 14:01:36,288 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-10-13 14:01:36,289 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 34 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 14:01:36,289 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 110 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 14:01:36,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2024-10-13 14:01:36,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 49. [2024-10-13 14:01:36,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 32 states have (on average 1.21875) internal successors, (39), 36 states have internal predecessors, (39), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2024-10-13 14:01:36,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2024-10-13 14:01:36,296 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 21 [2024-10-13 14:01:36,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:01:36,296 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2024-10-13 14:01:36,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-13 14:01:36,296 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2024-10-13 14:01:36,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-10-13 14:01:36,298 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:01:36,299 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-13 14:01:36,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-13 14:01:36,299 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_21_to_22_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_23_to_23_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_23_to_23_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-10-13 14:01:36,299 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:01:36,299 INFO L85 PathProgramCache]: Analyzing trace with hash -26304215, now seen corresponding path program 1 times [2024-10-13 14:01:36,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:01:36,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890383715] [2024-10-13 14:01:36,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:01:36,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:01:36,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:36,377 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-13 14:01:36,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:36,411 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-10-13 14:01:36,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:36,415 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-13 14:01:36,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:01:36,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890383715] [2024-10-13 14:01:36,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890383715] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 14:01:36,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721720240] [2024-10-13 14:01:36,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:01:36,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:01:36,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:01:36,432 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 14:01:36,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-13 14:01:36,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:36,495 INFO L255 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-13 14:01:36,497 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:01:36,505 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 14:01:36,541 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-13 14:01:36,541 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 14:01:36,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721720240] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:01:36,542 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 14:01:36,542 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2024-10-13 14:01:36,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332664295] [2024-10-13 14:01:36,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:01:36,542 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 14:01:36,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:01:36,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 14:01:36,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-10-13 14:01:36,543 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-13 14:01:36,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:01:36,607 INFO L93 Difference]: Finished difference Result 93 states and 107 transitions. [2024-10-13 14:01:36,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 14:01:36,607 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2024-10-13 14:01:36,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:01:36,608 INFO L225 Difference]: With dead ends: 93 [2024-10-13 14:01:36,608 INFO L226 Difference]: Without dead ends: 47 [2024-10-13 14:01:36,608 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-10-13 14:01:36,609 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 13 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 14:01:36,609 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 57 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 14:01:36,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-10-13 14:01:36,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-10-13 14:01:36,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 31 states have (on average 1.1935483870967742) internal successors, (37), 34 states have internal predecessors, (37), 8 states have call successors, (8), 6 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 6 states have call successors, (8) [2024-10-13 14:01:36,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2024-10-13 14:01:36,618 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 22 [2024-10-13 14:01:36,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:01:36,618 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2024-10-13 14:01:36,618 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-13 14:01:36,618 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2024-10-13 14:01:36,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-13 14:01:36,619 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:01:36,619 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:01:36,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-13 14:01:36,819 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-13 14:01:36,820 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_22_to_23_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_23_to_23_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_23_to_23_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-10-13 14:01:36,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:01:36,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1958164554, now seen corresponding path program 1 times [2024-10-13 14:01:36,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:01:36,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726406090] [2024-10-13 14:01:36,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:01:36,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:01:36,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:36,949 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-13 14:01:36,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:37,043 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-13 14:01:37,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:37,080 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-10-13 14:01:37,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:37,086 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-13 14:01:37,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:37,088 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 3 proven. 18 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-13 14:01:37,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:01:37,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726406090] [2024-10-13 14:01:37,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726406090] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 14:01:37,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796254705] [2024-10-13 14:01:37,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:01:37,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:01:37,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:01:37,091 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 14:01:37,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-13 14:01:37,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:37,162 INFO L255 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-10-13 14:01:37,164 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:01:37,168 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 14:01:37,303 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-10-13 14:01:37,303 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 14:01:37,642 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 22 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-13 14:01:37,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796254705] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 14:01:37,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 14:01:37,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 11] total 24 [2024-10-13 14:01:37,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308645470] [2024-10-13 14:01:37,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 14:01:37,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-10-13 14:01:37,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:01:37,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-10-13 14:01:37,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2024-10-13 14:01:37,644 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand has 24 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 21 states have internal predecessors, (46), 7 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (9), 5 states have call predecessors, (9), 7 states have call successors, (9) [2024-10-13 14:01:37,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:01:37,823 INFO L93 Difference]: Finished difference Result 93 states and 111 transitions. [2024-10-13 14:01:37,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-13 14:01:37,823 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 21 states have internal predecessors, (46), 7 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (9), 5 states have call predecessors, (9), 7 states have call successors, (9) Word has length 39 [2024-10-13 14:01:37,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:01:37,824 INFO L225 Difference]: With dead ends: 93 [2024-10-13 14:01:37,824 INFO L226 Difference]: Without dead ends: 51 [2024-10-13 14:01:37,825 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=163, Invalid=649, Unknown=0, NotChecked=0, Total=812 [2024-10-13 14:01:37,825 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 17 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 14:01:37,825 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 206 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 14:01:37,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-10-13 14:01:37,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-10-13 14:01:37,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 33 states have (on average 1.1818181818181819) internal successors, (39), 36 states have internal predecessors, (39), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (10), 8 states have call predecessors, (10), 6 states have call successors, (10) [2024-10-13 14:01:37,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2024-10-13 14:01:37,830 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 39 [2024-10-13 14:01:37,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:01:37,831 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2024-10-13 14:01:37,831 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 21 states have internal predecessors, (46), 7 states have call successors, (13), 5 states have call predecessors, (13), 6 states have return successors, (9), 5 states have call predecessors, (9), 7 states have call successors, (9) [2024-10-13 14:01:37,831 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2024-10-13 14:01:37,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-10-13 14:01:37,832 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:01:37,832 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:01:37,844 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-13 14:01:38,032 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:01:38,033 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_22_to_23_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_23_to_23_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_23_to_23_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-10-13 14:01:38,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:01:38,033 INFO L85 PathProgramCache]: Analyzing trace with hash 909113838, now seen corresponding path program 2 times [2024-10-13 14:01:38,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:01:38,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322418584] [2024-10-13 14:01:38,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:01:38,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:01:38,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:38,334 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-13 14:01:38,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:38,502 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-13 14:01:38,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:38,630 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-13 14:01:38,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:38,704 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-13 14:01:38,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:38,733 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-13 14:01:38,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:38,739 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-13 14:01:38,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:38,743 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-13 14:01:38,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:38,745 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-13 14:01:38,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:38,747 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 11 proven. 90 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-10-13 14:01:38,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:01:38,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322418584] [2024-10-13 14:01:38,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322418584] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 14:01:38,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115348871] [2024-10-13 14:01:38,747 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 14:01:38,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:01:38,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:01:38,749 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-13 14:01:38,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-13 14:01:38,829 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 14:01:38,829 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 14:01:38,831 INFO L255 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-13 14:01:38,833 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:01:38,851 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-13 14:01:38,998 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-10-13 14:01:39,012 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-10-13 14:01:39,012 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 14:01:39,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115348871] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:01:39,013 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 14:01:39,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [15] total 20 [2024-10-13 14:01:39,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794346587] [2024-10-13 14:01:39,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:01:39,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 14:01:39,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:01:39,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 14:01:39,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2024-10-13 14:01:39,014 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-13 14:01:39,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:01:39,114 INFO L93 Difference]: Finished difference Result 54 states and 65 transitions. [2024-10-13 14:01:39,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 14:01:39,115 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 67 [2024-10-13 14:01:39,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:01:39,116 INFO L225 Difference]: With dead ends: 54 [2024-10-13 14:01:39,118 INFO L226 Difference]: Without dead ends: 53 [2024-10-13 14:01:39,118 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2024-10-13 14:01:39,119 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 34 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 14:01:39,119 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 84 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 14:01:39,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-10-13 14:01:39,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2024-10-13 14:01:39,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 33 states have (on average 1.1515151515151516) internal successors, (38), 35 states have internal predecessors, (38), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (10), 8 states have call predecessors, (10), 6 states have call successors, (10) [2024-10-13 14:01:39,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 56 transitions. [2024-10-13 14:01:39,130 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 56 transitions. Word has length 67 [2024-10-13 14:01:39,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:01:39,130 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 56 transitions. [2024-10-13 14:01:39,130 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.0) internal successors, (24), 6 states have internal predecessors, (24), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-13 14:01:39,130 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 56 transitions. [2024-10-13 14:01:39,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-10-13 14:01:39,131 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:01:39,131 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:01:39,146 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-13 14:01:39,331 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:01:39,332 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_22_to_23_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_23_to_23_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_23_to_23_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-10-13 14:01:39,332 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:01:39,332 INFO L85 PathProgramCache]: Analyzing trace with hash -1882242042, now seen corresponding path program 1 times [2024-10-13 14:01:39,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:01:39,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675267938] [2024-10-13 14:01:39,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:01:39,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:01:39,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:39,493 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-13 14:01:39,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:39,501 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-13 14:01:39,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:39,505 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-13 14:01:39,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:39,507 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-13 14:01:39,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:39,508 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-10-13 14:01:39,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:39,531 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-13 14:01:39,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:39,536 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-13 14:01:39,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:39,540 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-13 14:01:39,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:39,542 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2024-10-13 14:01:39,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:01:39,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675267938] [2024-10-13 14:01:39,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675267938] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 14:01:39,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305130969] [2024-10-13 14:01:39,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:01:39,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:01:39,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:01:39,545 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) [2024-10-13 14:01:39,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-13 14:01:39,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:39,641 INFO L255 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 14:01:39,644 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:01:39,765 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-13 14:01:39,776 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2024-10-13 14:01:39,777 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 14:01:39,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305130969] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:01:39,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 14:01:39,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 13 [2024-10-13 14:01:39,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377050561] [2024-10-13 14:01:39,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:01:39,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 14:01:39,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:01:39,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 14:01:39,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-10-13 14:01:39,779 INFO L87 Difference]: Start difference. First operand 50 states and 56 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-13 14:01:39,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:01:39,839 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2024-10-13 14:01:39,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 14:01:39,840 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 68 [2024-10-13 14:01:39,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:01:39,841 INFO L225 Difference]: With dead ends: 50 [2024-10-13 14:01:39,842 INFO L226 Difference]: Without dead ends: 49 [2024-10-13 14:01:39,842 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 79 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2024-10-13 14:01:39,843 INFO L432 NwaCegarLoop]: 23 mSDtfsCounter, 4 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 14:01:39,843 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 94 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 14:01:39,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-10-13 14:01:39,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2024-10-13 14:01:39,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 31 states have internal predecessors, (34), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (9), 7 states have call predecessors, (9), 5 states have call successors, (9) [2024-10-13 14:01:39,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2024-10-13 14:01:39,852 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 68 [2024-10-13 14:01:39,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:01:39,852 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2024-10-13 14:01:39,852 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 3 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-13 14:01:39,852 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2024-10-13 14:01:39,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-10-13 14:01:39,853 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:01:39,853 INFO L215 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-13 14:01:39,866 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-13 14:01:40,057 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,SelfDestructingSolverStorable9 [2024-10-13 14:01:40,058 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_21_to_22_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_23_to_23_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_23_to_23_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-10-13 14:01:40,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:01:40,058 INFO L85 PathProgramCache]: Analyzing trace with hash -209581975, now seen corresponding path program 1 times [2024-10-13 14:01:40,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:01:40,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511875674] [2024-10-13 14:01:40,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:01:40,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:01:40,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:40,206 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-13 14:01:40,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:40,334 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-13 14:01:40,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:40,460 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-13 14:01:40,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:40,588 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-13 14:01:40,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:40,642 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-13 14:01:40,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:40,673 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-13 14:01:40,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:40,675 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-10-13 14:01:40,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:40,682 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-13 14:01:40,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:40,686 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-13 14:01:40,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:40,690 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-13 14:01:40,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:40,692 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-13 14:01:40,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:40,693 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-10-13 14:01:40,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:40,695 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 13 proven. 99 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2024-10-13 14:01:40,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:01:40,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511875674] [2024-10-13 14:01:40,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511875674] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 14:01:40,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420675365] [2024-10-13 14:01:40,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:01:40,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:01:40,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:01:40,697 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) [2024-10-13 14:01:40,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-13 14:01:40,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:40,795 INFO L255 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 28 conjuncts are in the unsatisfiable core [2024-10-13 14:01:40,798 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:01:40,800 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-10-13 14:01:40,974 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 115 proven. 3 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2024-10-13 14:01:40,976 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-13 14:01:41,416 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2024-10-13 14:01:41,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420675365] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-13 14:01:41,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-13 14:01:41,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 10, 11] total 33 [2024-10-13 14:01:41,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246073802] [2024-10-13 14:01:41,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-13 14:01:41,418 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-10-13 14:01:41,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:01:41,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-10-13 14:01:41,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=923, Unknown=0, NotChecked=0, Total=1056 [2024-10-13 14:01:41,419 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand has 33 states, 26 states have (on average 2.730769230769231) internal successors, (71), 28 states have internal predecessors, (71), 11 states have call successors, (25), 7 states have call predecessors, (25), 10 states have return successors, (20), 9 states have call predecessors, (20), 11 states have call successors, (20) [2024-10-13 14:01:41,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:01:41,819 INFO L93 Difference]: Finished difference Result 89 states and 104 transitions. [2024-10-13 14:01:41,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-10-13 14:01:41,820 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 26 states have (on average 2.730769230769231) internal successors, (71), 28 states have internal predecessors, (71), 11 states have call successors, (25), 7 states have call predecessors, (25), 10 states have return successors, (20), 9 states have call predecessors, (20), 11 states have call successors, (20) Word has length 90 [2024-10-13 14:01:41,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:01:41,821 INFO L225 Difference]: With dead ends: 89 [2024-10-13 14:01:41,821 INFO L226 Difference]: Without dead ends: 49 [2024-10-13 14:01:41,822 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 229 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 457 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=269, Invalid=1711, Unknown=0, NotChecked=0, Total=1980 [2024-10-13 14:01:41,822 INFO L432 NwaCegarLoop]: 13 mSDtfsCounter, 38 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-13 14:01:41,822 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 146 Invalid, 393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-13 14:01:41,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-10-13 14:01:41,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-10-13 14:01:41,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 32 states have (on average 1.125) internal successors, (36), 33 states have internal predecessors, (36), 7 states have call successors, (7), 6 states have call predecessors, (7), 8 states have return successors, (11), 9 states have call predecessors, (11), 5 states have call successors, (11) [2024-10-13 14:01:41,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2024-10-13 14:01:41,832 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 90 [2024-10-13 14:01:41,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:01:41,832 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2024-10-13 14:01:41,832 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 26 states have (on average 2.730769230769231) internal successors, (71), 28 states have internal predecessors, (71), 11 states have call successors, (25), 7 states have call predecessors, (25), 10 states have return successors, (20), 9 states have call predecessors, (20), 11 states have call successors, (20) [2024-10-13 14:01:41,833 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2024-10-13 14:01:41,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2024-10-13 14:01:41,835 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:01:41,835 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 16, 16, 16, 16, 16, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2024-10-13 14:01:41,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-13 14:01:42,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:01:42,040 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting func_to_recursive_line_21_to_22_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_23_to_23_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_23_to_23_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-10-13 14:01:42,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:01:42,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1245795159, now seen corresponding path program 2 times [2024-10-13 14:01:42,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:01:42,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279743520] [2024-10-13 14:01:42,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:01:42,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:01:42,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:42,445 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-13 14:01:42,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:42,722 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-13 14:01:42,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:42,890 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-13 14:01:42,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:43,030 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-13 14:01:43,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:43,124 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-13 14:01:43,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:43,177 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-13 14:01:43,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:43,218 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-13 14:01:43,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:43,228 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-13 14:01:43,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:43,232 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-13 14:01:43,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:43,237 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-13 14:01:43,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:43,240 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-13 14:01:43,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:43,242 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-13 14:01:43,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:43,243 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-13 14:01:43,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:43,244 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-10-13 14:01:43,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:43,257 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-13 14:01:43,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:43,262 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-13 14:01:43,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:43,266 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-13 14:01:43,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:43,269 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-13 14:01:43,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:43,271 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-13 14:01:43,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:43,274 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-13 14:01:43,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:43,282 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-13 14:01:43,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:43,287 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-13 14:01:43,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:43,291 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-13 14:01:43,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:43,294 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-13 14:01:43,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:43,296 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-13 14:01:43,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:43,298 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-13 14:01:43,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:43,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1215 backedges. 19 proven. 414 refuted. 0 times theorem prover too weak. 782 trivial. 0 not checked. [2024-10-13 14:01:43,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:01:43,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279743520] [2024-10-13 14:01:43,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279743520] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 14:01:43,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066865106] [2024-10-13 14:01:43,301 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-13 14:01:43,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:01:43,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:01:43,303 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) [2024-10-13 14:01:43,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-13 14:01:43,444 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-13 14:01:43,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-13 14:01:43,446 INFO L255 TraceCheckSpWp]: Trace formula consists of 774 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-13 14:01:43,450 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:01:43,475 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-13 14:01:43,681 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-10-13 14:01:43,696 INFO L134 CoverageAnalysis]: Checked inductivity of 1215 backedges. 653 proven. 0 refuted. 0 times theorem prover too weak. 562 trivial. 0 not checked. [2024-10-13 14:01:43,697 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 14:01:43,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066865106] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:01:43,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 14:01:43,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [18] total 23 [2024-10-13 14:01:43,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894808043] [2024-10-13 14:01:43,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:01:43,697 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 14:01:43,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:01:43,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 14:01:43,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2024-10-13 14:01:43,698 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-10-13 14:01:43,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:01:43,773 INFO L93 Difference]: Finished difference Result 50 states and 55 transitions. [2024-10-13 14:01:43,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 14:01:43,773 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 186 [2024-10-13 14:01:43,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:01:43,774 INFO L225 Difference]: With dead ends: 50 [2024-10-13 14:01:43,775 INFO L226 Difference]: Without dead ends: 49 [2024-10-13 14:01:43,775 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 235 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=564, Unknown=0, NotChecked=0, Total=650 [2024-10-13 14:01:43,775 INFO L432 NwaCegarLoop]: 28 mSDtfsCounter, 17 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 110 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 14:01:43,775 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 110 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 14:01:43,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-10-13 14:01:43,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 48. [2024-10-13 14:01:43,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 32 states have (on average 1.09375) internal successors, (35), 32 states have internal predecessors, (35), 7 states have call successors, (7), 6 states have call predecessors, (7), 8 states have return successors, (11), 9 states have call predecessors, (11), 5 states have call successors, (11) [2024-10-13 14:01:43,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 53 transitions. [2024-10-13 14:01:43,781 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 53 transitions. Word has length 186 [2024-10-13 14:01:43,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:01:43,782 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 53 transitions. [2024-10-13 14:01:43,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-10-13 14:01:43,782 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 53 transitions. [2024-10-13 14:01:43,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-10-13 14:01:43,783 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:01:43,783 INFO L215 NwaCegarLoop]: trace histogram [20, 20, 16, 16, 16, 16, 16, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2024-10-13 14:01:43,797 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-13 14:01:43,983 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:01:43,983 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting func_to_recursive_line_21_to_22_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_23_to_23_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_23_to_23_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2024-10-13 14:01:43,984 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:01:43,984 INFO L85 PathProgramCache]: Analyzing trace with hash 35055832, now seen corresponding path program 1 times [2024-10-13 14:01:43,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:01:43,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501411176] [2024-10-13 14:01:43,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:01:43,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:01:44,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:44,285 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-13 14:01:44,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:44,310 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-13 14:01:44,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:44,315 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-13 14:01:44,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:44,319 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-13 14:01:44,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:44,322 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-13 14:01:44,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:44,324 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-13 14:01:44,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:44,325 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-13 14:01:44,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:44,331 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-13 14:01:44,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:44,336 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-13 14:01:44,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:44,340 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-13 14:01:44,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:44,342 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-13 14:01:44,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:44,344 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-13 14:01:44,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:44,345 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-13 14:01:44,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:44,347 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2024-10-13 14:01:44,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:44,362 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-13 14:01:44,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:44,368 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-13 14:01:44,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:44,372 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-13 14:01:44,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:44,374 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-13 14:01:44,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:44,376 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-13 14:01:44,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:44,377 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-13 14:01:44,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:44,383 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-13 14:01:44,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:44,387 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-13 14:01:44,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:44,391 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-13 14:01:44,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:44,394 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-13 14:01:44,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:44,395 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-10-13 14:01:44,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:44,404 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2024-10-13 14:01:44,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:44,407 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 1210 trivial. 0 not checked. [2024-10-13 14:01:44,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:01:44,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501411176] [2024-10-13 14:01:44,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501411176] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-13 14:01:44,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144278656] [2024-10-13 14:01:44,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:01:44,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:01:44,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:01:44,410 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) [2024-10-13 14:01:44,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-13 14:01:44,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:01:44,561 INFO L255 TraceCheckSpWp]: Trace formula consists of 775 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-10-13 14:01:44,564 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:01:44,722 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-10-13 14:01:44,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1216 backedges. 653 proven. 0 refuted. 0 times theorem prover too weak. 563 trivial. 0 not checked. [2024-10-13 14:01:44,733 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 14:01:44,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [144278656] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:01:44,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-10-13 14:01:44,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 14 [2024-10-13 14:01:44,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15612127] [2024-10-13 14:01:44,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:01:44,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 14:01:44,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:01:44,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 14:01:44,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2024-10-13 14:01:44,734 INFO L87 Difference]: Start difference. First operand 48 states and 53 transitions. Second operand has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-10-13 14:01:44,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:01:44,780 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2024-10-13 14:01:44,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 14:01:44,780 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 187 [2024-10-13 14:01:44,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:01:44,781 INFO L225 Difference]: With dead ends: 48 [2024-10-13 14:01:44,781 INFO L226 Difference]: Without dead ends: 0 [2024-10-13 14:01:44,781 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 232 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2024-10-13 14:01:44,781 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 4 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-13 14:01:44,782 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 73 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-13 14:01:44,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-13 14:01:44,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-13 14:01:44,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 14:01:44,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-13 14:01:44,782 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 187 [2024-10-13 14:01:44,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:01:44,782 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-13 14:01:44,782 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.4) internal successors, (37), 6 states have internal predecessors, (37), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-10-13 14:01:44,782 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-13 14:01:44,782 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-13 14:01:44,786 INFO L782 garLoopResultBuilder]: Registering result SAFE for location func_to_recursive_line_23_to_23_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 6 remaining) [2024-10-13 14:01:44,786 INFO L782 garLoopResultBuilder]: Registering result SAFE for location func_to_recursive_line_23_to_23_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 6 remaining) [2024-10-13 14:01:44,787 INFO L782 garLoopResultBuilder]: Registering result SAFE for location func_to_recursive_line_22_to_23_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 6 remaining) [2024-10-13 14:01:44,787 INFO L782 garLoopResultBuilder]: Registering result SAFE for location func_to_recursive_line_22_to_23_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 6 remaining) [2024-10-13 14:01:44,787 INFO L782 garLoopResultBuilder]: Registering result SAFE for location func_to_recursive_line_21_to_22_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 6 remaining) [2024-10-13 14:01:44,787 INFO L782 garLoopResultBuilder]: Registering result SAFE for location func_to_recursive_line_21_to_22_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 6 remaining) [2024-10-13 14:01:44,800 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-13 14:01:44,987 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,SelfDestructingSolverStorable12 [2024-10-13 14:01:44,991 INFO L407 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:01:44,992 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-10-13 14:02:13,296 WARN L286 SmtUtils]: Spent 28.14s on a formula simplification. DAG size of input: 112 DAG size of output: 40 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-10-13 14:02:33,429 WARN L286 SmtUtils]: Spent 20.10s on a formula simplification. DAG size of input: 72 DAG size of output: 42 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-10-13 14:02:57,755 WARN L286 SmtUtils]: Spent 24.10s on a formula simplification. DAG size of input: 88 DAG size of output: 58 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter)