./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/no-overflow.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_geo1-u2.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_nla-digbench/recursified_geo1-u2.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 c67c252daff5c7ee06d488793b0dcb7582651cc84d24dd97a82d484d18291433 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-mul-div-a046e57-m [2024-10-13 14:02:57,532 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-13 14:02:57,582 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-13 14:02:57,587 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-13 14:02:57,588 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-13 14:02:57,607 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-13 14:02:57,608 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-13 14:02:57,608 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-13 14:02:57,609 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-13 14:02:57,610 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-13 14:02:57,611 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-13 14:02:57,611 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-13 14:02:57,611 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-13 14:02:57,612 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-13 14:02:57,612 INFO L153 SettingsManager]: * Use SBE=true [2024-10-13 14:02:57,612 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-13 14:02:57,615 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-13 14:02:57,615 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-13 14:02:57,615 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-13 14:02:57,616 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-13 14:02:57,616 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-13 14:02:57,616 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-13 14:02:57,616 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-13 14:02:57,616 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-13 14:02:57,616 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-13 14:02:57,617 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-13 14:02:57,617 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-13 14:02:57,617 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-13 14:02:57,617 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-13 14:02:57,617 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-13 14:02:57,617 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-13 14:02:57,617 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-13 14:02:57,618 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-13 14:02:57,618 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-13 14:02:57,618 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 14:02:57,618 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-13 14:02:57,619 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-13 14:02:57,619 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-13 14:02:57,620 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-13 14:02:57,620 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-13 14:02:57,620 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-13 14:02:57,620 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-13 14:02:57,620 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-13 14:02:57,621 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-13 14:02:57,621 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c67c252daff5c7ee06d488793b0dcb7582651cc84d24dd97a82d484d18291433 [2024-10-13 14:02:57,829 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-13 14:02:57,848 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-13 14:02:57,850 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-13 14:02:57,850 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-13 14:02:57,851 INFO L274 PluginConnector]: CDTParser initialized [2024-10-13 14:02:57,852 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_geo1-u2.c [2024-10-13 14:02:59,033 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-13 14:02:59,163 INFO L384 CDTParser]: Found 1 translation units. [2024-10-13 14:02:59,164 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_geo1-u2.c [2024-10-13 14:02:59,169 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e785f1fd/148c95819e014f3bb372377e4810ac6f/FLAG67986a735 [2024-10-13 14:02:59,179 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e785f1fd/148c95819e014f3bb372377e4810ac6f [2024-10-13 14:02:59,181 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-13 14:02:59,182 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-13 14:02:59,184 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-13 14:02:59,184 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-13 14:02:59,187 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-13 14:02:59,188 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:02:59" (1/1) ... [2024-10-13 14:02:59,188 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@666b0a00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:59, skipping insertion in model container [2024-10-13 14:02:59,189 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 02:02:59" (1/1) ... [2024-10-13 14:02:59,202 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-13 14:02:59,339 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 14:02:59,346 INFO L200 MainTranslator]: Completed pre-run [2024-10-13 14:02:59,362 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-13 14:02:59,374 INFO L204 MainTranslator]: Completed translation [2024-10-13 14:02:59,374 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:59 WrapperNode [2024-10-13 14:02:59,375 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-13 14:02:59,375 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-13 14:02:59,376 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-13 14:02:59,376 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-13 14:02:59,381 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:59" (1/1) ... [2024-10-13 14:02:59,387 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:59" (1/1) ... [2024-10-13 14:02:59,401 INFO L138 Inliner]: procedures = 16, calls = 52, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2024-10-13 14:02:59,401 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-13 14:02:59,402 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-13 14:02:59,402 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-13 14:02:59,402 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-13 14:02:59,410 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:59" (1/1) ... [2024-10-13 14:02:59,410 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:59" (1/1) ... [2024-10-13 14:02:59,412 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:59" (1/1) ... [2024-10-13 14:02:59,423 INFO L175 MemorySlicer]: Split 27 memory accesses to 6 slices as follows [2, 4, 5, 8, 2, 6]. 30 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0]. The 9 writes are split as follows [0, 2, 2, 3, 1, 1]. [2024-10-13 14:02:59,423 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:59" (1/1) ... [2024-10-13 14:02:59,424 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:59" (1/1) ... [2024-10-13 14:02:59,428 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:59" (1/1) ... [2024-10-13 14:02:59,429 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:59" (1/1) ... [2024-10-13 14:02:59,430 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:59" (1/1) ... [2024-10-13 14:02:59,431 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:59" (1/1) ... [2024-10-13 14:02:59,432 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-13 14:02:59,433 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-13 14:02:59,433 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-13 14:02:59,433 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-13 14:02:59,434 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:59" (1/1) ... [2024-10-13 14:02:59,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-13 14:02:59,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:02:59,460 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 14:02:59,462 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 14:02:59,494 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_28_to_36_0 [2024-10-13 14:02:59,494 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_28_to_36_0 [2024-10-13 14:02:59,494 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-13 14:02:59,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-13 14:02:59,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-13 14:02:59,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-13 14:02:59,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-13 14:02:59,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-13 14:02:59,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-13 14:02:59,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-13 14:02:59,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-13 14:02:59,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-13 14:02:59,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-13 14:02:59,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-13 14:02:59,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-10-13 14:02:59,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-10-13 14:02:59,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-13 14:02:59,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-13 14:02:59,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-13 14:02:59,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-13 14:02:59,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-13 14:02:59,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-13 14:02:59,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-10-13 14:02:59,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-10-13 14:02:59,497 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-13 14:02:59,497 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-13 14:02:59,498 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-13 14:02:59,565 INFO L238 CfgBuilder]: Building ICFG [2024-10-13 14:02:59,566 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-13 14:02:59,815 INFO L? ?]: Removed 57 outVars from TransFormulas that were not future-live. [2024-10-13 14:02:59,815 INFO L287 CfgBuilder]: Performing block encoding [2024-10-13 14:02:59,846 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-13 14:02:59,847 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-13 14:02:59,847 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:02:59 BoogieIcfgContainer [2024-10-13 14:02:59,847 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-13 14:02:59,849 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-13 14:02:59,849 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-13 14:02:59,851 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-13 14:02:59,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 02:02:59" (1/3) ... [2024-10-13 14:02:59,851 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e5bd42a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:02:59, skipping insertion in model container [2024-10-13 14:02:59,852 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 02:02:59" (2/3) ... [2024-10-13 14:02:59,852 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e5bd42a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 02:02:59, skipping insertion in model container [2024-10-13 14:02:59,852 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 02:02:59" (3/3) ... [2024-10-13 14:02:59,853 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_geo1-u2.c [2024-10-13 14:02:59,864 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-13 14:02:59,864 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2024-10-13 14:02:59,914 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-13 14:02:59,919 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;@7ffb26f3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-13 14:02:59,919 INFO L334 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2024-10-13 14:02:59,922 INFO L276 IsEmpty]: Start isEmpty. Operand has 62 states, 33 states have (on average 1.7575757575757576) internal successors, (58), 56 states have internal predecessors, (58), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-10-13 14:02:59,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-10-13 14:02:59,926 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:02:59,926 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-10-13 14:02:59,926 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_28_to_36_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_36_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_36_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-13 14:02:59,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:02:59,930 INFO L85 PathProgramCache]: Analyzing trace with hash 113354852, now seen corresponding path program 1 times [2024-10-13 14:02:59,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:02:59,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008811666] [2024-10-13 14:02:59,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:02:59,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:03:00,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:03:00,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [557835669] [2024-10-13 14:03:00,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:00,046 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:03:00,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:03:00,047 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 14:03:00,048 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 14:03:00,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:03:00,121 INFO L255 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-13 14:03:00,125 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:03:00,175 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 14:03:00,211 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 14:03:00,223 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 14:03:00,223 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 14:03:00,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:03:00,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008811666] [2024-10-13 14:03:00,224 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:03:00,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557835669] [2024-10-13 14:03:00,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557835669] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:03:00,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:03:00,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 14:03:00,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415918973] [2024-10-13 14:03:00,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:03:00,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 14:03:00,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:03:00,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 14:03:00,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-13 14:03:00,252 INFO L87 Difference]: Start difference. First operand has 62 states, 33 states have (on average 1.7575757575757576) internal successors, (58), 56 states have internal predecessors, (58), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 14:03:00,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:03:00,425 INFO L93 Difference]: Finished difference Result 161 states and 177 transitions. [2024-10-13 14:03:00,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 14:03:00,428 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-10-13 14:03:00,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:03:00,435 INFO L225 Difference]: With dead ends: 161 [2024-10-13 14:03:00,435 INFO L226 Difference]: Without dead ends: 98 [2024-10-13 14:03:00,438 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-13 14:03:00,440 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 75 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 14:03:00,441 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 218 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 14:03:00,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2024-10-13 14:03:00,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 74. [2024-10-13 14:03:00,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 45 states have (on average 1.6666666666666667) internal successors, (75), 67 states have internal predecessors, (75), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-10-13 14:03:00,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 84 transitions. [2024-10-13 14:03:00,481 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 84 transitions. Word has length 5 [2024-10-13 14:03:00,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:03:00,482 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 84 transitions. [2024-10-13 14:03:00,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.0) internal successors, (4), 4 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 14:03:00,483 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 84 transitions. [2024-10-13 14:03:00,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-13 14:03:00,483 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:03:00,483 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-13 14:03:00,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-13 14:03:00,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-10-13 14:03:00,686 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_28_to_36_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_36_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_36_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-13 14:03:00,686 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:03:00,686 INFO L85 PathProgramCache]: Analyzing trace with hash -780966847, now seen corresponding path program 1 times [2024-10-13 14:03:00,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:03:00,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979193478] [2024-10-13 14:03:00,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:00,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:03:00,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:03:00,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1790210754] [2024-10-13 14:03:00,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:00,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:03:00,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:03:00,743 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 14:03:00,744 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 14:03:00,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:03:00,824 INFO L255 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-13 14:03:00,826 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:03:00,838 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 14:03:00,871 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 14:03:00,881 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 14:03:00,881 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 14:03:00,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:03:00,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979193478] [2024-10-13 14:03:00,882 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:03:00,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790210754] [2024-10-13 14:03:00,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790210754] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:03:00,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:03:00,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-13 14:03:00,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346009109] [2024-10-13 14:03:00,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:03:00,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-13 14:03:00,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:03:00,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-13 14:03:00,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-13 14:03:00,884 INFO L87 Difference]: Start difference. First operand 74 states and 84 transitions. Second operand has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 14:03:00,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:03:00,994 INFO L93 Difference]: Finished difference Result 98 states and 101 transitions. [2024-10-13 14:03:00,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-13 14:03:00,995 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-10-13 14:03:00,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:03:00,996 INFO L225 Difference]: With dead ends: 98 [2024-10-13 14:03:00,996 INFO L226 Difference]: Without dead ends: 97 [2024-10-13 14:03:00,996 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-13 14:03:00,997 INFO L432 NwaCegarLoop]: 38 mSDtfsCounter, 72 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 14:03:00,997 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 205 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 14:03:00,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-10-13 14:03:01,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 74. [2024-10-13 14:03:01,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 45 states have (on average 1.6444444444444444) internal successors, (74), 67 states have internal predecessors, (74), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-10-13 14:03:01,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 83 transitions. [2024-10-13 14:03:01,005 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 83 transitions. Word has length 6 [2024-10-13 14:03:01,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:03:01,006 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 83 transitions. [2024-10-13 14:03:01,006 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 1.25) internal successors, (5), 4 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 14:03:01,006 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 83 transitions. [2024-10-13 14:03:01,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-13 14:03:01,006 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:03:01,006 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:03:01,020 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-13 14:03:01,210 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,SelfDestructingSolverStorable1 [2024-10-13 14:03:01,211 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_28_to_36_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_36_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_36_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-13 14:03:01,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:03:01,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1559831558, now seen corresponding path program 1 times [2024-10-13 14:03:01,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:03:01,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140625656] [2024-10-13 14:03:01,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:01,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:03:01,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:03:01,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1688507573] [2024-10-13 14:03:01,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:01,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:03:01,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:03:01,243 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 14:03:01,243 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 14:03:01,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:03:01,310 INFO L255 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-10-13 14:03:01,311 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:03:01,317 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 14:03:01,403 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 14:03:01,403 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 14:03:01,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:03:01,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140625656] [2024-10-13 14:03:01,403 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:03:01,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688507573] [2024-10-13 14:03:01,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1688507573] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:03:01,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:03:01,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-13 14:03:01,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177107513] [2024-10-13 14:03:01,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:03:01,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-13 14:03:01,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:03:01,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-13 14:03:01,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-13 14:03:01,404 INFO L87 Difference]: Start difference. First operand 74 states and 83 transitions. Second operand has 7 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 14:03:01,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:03:01,545 INFO L93 Difference]: Finished difference Result 97 states and 100 transitions. [2024-10-13 14:03:01,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-13 14:03:01,545 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2024-10-13 14:03:01,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:03:01,546 INFO L225 Difference]: With dead ends: 97 [2024-10-13 14:03:01,546 INFO L226 Difference]: Without dead ends: 95 [2024-10-13 14:03:01,546 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-10-13 14:03:01,550 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 65 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 14:03:01,551 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 242 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 14:03:01,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-10-13 14:03:01,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 74. [2024-10-13 14:03:01,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 45 states have (on average 1.6) internal successors, (72), 67 states have internal predecessors, (72), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-10-13 14:03:01,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 81 transitions. [2024-10-13 14:03:01,559 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 81 transitions. Word has length 7 [2024-10-13 14:03:01,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:03:01,560 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 81 transitions. [2024-10-13 14:03:01,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 14:03:01,560 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 81 transitions. [2024-10-13 14:03:01,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-13 14:03:01,560 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:03:01,560 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:03:01,576 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 14:03:01,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:03:01,765 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_28_to_36_0Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_36_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_36_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-13 14:03:01,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:03:01,765 INFO L85 PathProgramCache]: Analyzing trace with hash 54542248, now seen corresponding path program 1 times [2024-10-13 14:03:01,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:03:01,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885188849] [2024-10-13 14:03:01,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:01,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:03:01,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-13 14:03:01,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [881484906] [2024-10-13 14:03:01,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:01,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:03:01,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-13 14:03:01,803 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 14:03:01,803 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 14:03:01,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-13 14:03:01,871 INFO L255 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-10-13 14:03:01,873 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-13 14:03:01,881 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 13 treesize of output 9 [2024-10-13 14:03:01,895 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 14:03:01,900 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 14:03:01,999 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 14:03:02,010 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 14:03:02,010 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-13 14:03:02,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-13 14:03:02,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885188849] [2024-10-13 14:03:02,010 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-13 14:03:02,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [881484906] [2024-10-13 14:03:02,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [881484906] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-13 14:03:02,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-13 14:03:02,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-13 14:03:02,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661846522] [2024-10-13 14:03:02,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-13 14:03:02,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-13 14:03:02,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-13 14:03:02,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-13 14:03:02,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-13 14:03:02,012 INFO L87 Difference]: Start difference. First operand 74 states and 81 transitions. Second operand has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 14:03:02,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-13 14:03:02,186 INFO L93 Difference]: Finished difference Result 95 states and 98 transitions. [2024-10-13 14:03:02,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-13 14:03:02,186 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-10-13 14:03:02,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-13 14:03:02,188 INFO L225 Difference]: With dead ends: 95 [2024-10-13 14:03:02,188 INFO L226 Difference]: Without dead ends: 93 [2024-10-13 14:03:02,188 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-10-13 14:03:02,189 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 64 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-13 14:03:02,189 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 267 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-13 14:03:02,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-10-13 14:03:02,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 74. [2024-10-13 14:03:02,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 45 states have (on average 1.5555555555555556) internal successors, (70), 67 states have internal predecessors, (70), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-10-13 14:03:02,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 79 transitions. [2024-10-13 14:03:02,200 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 79 transitions. Word has length 9 [2024-10-13 14:03:02,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-13 14:03:02,201 INFO L471 AbstractCegarLoop]: Abstraction has 74 states and 79 transitions. [2024-10-13 14:03:02,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-13 14:03:02,201 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 79 transitions. [2024-10-13 14:03:02,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2024-10-13 14:03:02,201 INFO L207 NwaCegarLoop]: Found error trace [2024-10-13 14:03:02,201 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-13 14:03:02,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-13 14:03:02,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-13 14:03:02,402 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_28_to_36_0Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_28_to_36_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_28_to_36_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 20 more)] === [2024-10-13 14:03:02,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-13 14:03:02,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1690809733, now seen corresponding path program 1 times [2024-10-13 14:03:02,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-13 14:03:02,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695135190] [2024-10-13 14:03:02,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-13 14:03:02,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-13 14:03:02,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat