./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_fermat1-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 61a67961 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_fermat1-ll.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 82b98e74657ce84706a43470df686c21fc227d1db1df507636ad5f146dee0144 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 21:14:33,043 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 21:14:33,102 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-14 21:14:33,106 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 21:14:33,106 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 21:14:33,129 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 21:14:33,129 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 21:14:33,130 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 21:14:33,131 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 21:14:33,131 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 21:14:33,131 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 21:14:33,132 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 21:14:33,132 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 21:14:33,132 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 21:14:33,133 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 21:14:33,133 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 21:14:33,133 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 21:14:33,133 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 21:14:33,134 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 21:14:33,134 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 21:14:33,134 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 21:14:33,135 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 21:14:33,135 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 21:14:33,135 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 21:14:33,135 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 21:14:33,136 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-14 21:14:33,136 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 21:14:33,136 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 21:14:33,136 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 21:14:33,136 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 21:14:33,137 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 21:14:33,137 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 21:14:33,137 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 21:14:33,137 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 21:14:33,137 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 21:14:33,138 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 21:14:33,138 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 21:14:33,138 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 21:14:33,138 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 21:14:33,138 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 21:14:33,139 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 21:14:33,139 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 21:14:33,139 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 21:14:33,139 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 21:14:33,139 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 82b98e74657ce84706a43470df686c21fc227d1db1df507636ad5f146dee0144 [2024-10-14 21:14:33,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 21:14:33,391 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 21:14:33,393 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 21:14:33,395 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 21:14:33,396 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 21:14:33,397 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_fermat1-ll.c [2024-10-14 21:14:34,701 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 21:14:34,893 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 21:14:34,893 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_fermat1-ll.c [2024-10-14 21:14:34,901 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5cd02d75/616d4a3ab6544111a3d99227927bb0df/FLAG76cd58c58 [2024-10-14 21:14:35,290 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5cd02d75/616d4a3ab6544111a3d99227927bb0df [2024-10-14 21:14:35,293 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 21:14:35,294 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 21:14:35,295 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 21:14:35,295 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 21:14:35,299 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 21:14:35,300 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:14:35" (1/1) ... [2024-10-14 21:14:35,301 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@502c23a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:35, skipping insertion in model container [2024-10-14 21:14:35,301 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:14:35" (1/1) ... [2024-10-14 21:14:35,319 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 21:14:35,471 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 21:14:35,484 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 21:14:35,521 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 21:14:35,540 INFO L204 MainTranslator]: Completed translation [2024-10-14 21:14:35,541 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:35 WrapperNode [2024-10-14 21:14:35,541 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 21:14:35,542 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 21:14:35,542 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 21:14:35,543 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 21:14:35,549 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:35" (1/1) ... [2024-10-14 21:14:35,565 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:35" (1/1) ... [2024-10-14 21:14:35,593 INFO L138 Inliner]: procedures = 18, calls = 83, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 103 [2024-10-14 21:14:35,593 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 21:14:35,594 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 21:14:35,594 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 21:14:35,594 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 21:14:35,604 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:35" (1/1) ... [2024-10-14 21:14:35,604 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:35" (1/1) ... [2024-10-14 21:14:35,612 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:35" (1/1) ... [2024-10-14 21:14:35,642 INFO L175 MemorySlicer]: Split 53 memory accesses to 5 slices as follows [2, 16, 16, 8, 11]. 30 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 8 writes are split as follows [0, 2, 2, 1, 3]. [2024-10-14 21:14:35,643 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:35" (1/1) ... [2024-10-14 21:14:35,643 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:35" (1/1) ... [2024-10-14 21:14:35,649 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:35" (1/1) ... [2024-10-14 21:14:35,657 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:35" (1/1) ... [2024-10-14 21:14:35,659 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:35" (1/1) ... [2024-10-14 21:14:35,660 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:35" (1/1) ... [2024-10-14 21:14:35,662 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 21:14:35,663 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 21:14:35,664 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 21:14:35,664 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 21:14:35,665 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:35" (1/1) ... [2024-10-14 21:14:35,673 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 21:14:35,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:14:35,701 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) [2024-10-14 21:14:35,705 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 [2024-10-14 21:14:35,751 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 21:14:35,751 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_33_to_36_0 [2024-10-14 21:14:35,751 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_33_to_36_0 [2024-10-14 21:14:35,751 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-14 21:14:35,751 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-14 21:14:35,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 21:14:35,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 21:14:35,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-14 21:14:35,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-14 21:14:35,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-14 21:14:35,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-14 21:14:35,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-14 21:14:35,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-14 21:14:35,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-14 21:14:35,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-14 21:14:35,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-10-14 21:14:35,754 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_38_to_43_0 [2024-10-14 21:14:35,754 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_38_to_43_0 [2024-10-14 21:14:35,754 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_46_to_51_0 [2024-10-14 21:14:35,754 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_46_to_51_0 [2024-10-14 21:14:35,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 21:14:35,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 21:14:35,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-14 21:14:35,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-14 21:14:35,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-14 21:14:35,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-14 21:14:35,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-10-14 21:14:35,755 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-14 21:14:35,756 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-14 21:14:35,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-14 21:14:35,874 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 21:14:35,877 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 21:14:36,525 INFO L? ?]: Removed 229 outVars from TransFormulas that were not future-live. [2024-10-14 21:14:36,525 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 21:14:36,571 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 21:14:36,572 INFO L314 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-14 21:14:36,572 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:14:36 BoogieIcfgContainer [2024-10-14 21:14:36,572 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 21:14:36,574 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 21:14:36,574 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 21:14:36,579 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 21:14:36,579 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:14:35" (1/3) ... [2024-10-14 21:14:36,580 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4433f3f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:14:36, skipping insertion in model container [2024-10-14 21:14:36,580 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:14:35" (2/3) ... [2024-10-14 21:14:36,581 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4433f3f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:14:36, skipping insertion in model container [2024-10-14 21:14:36,582 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:14:36" (3/3) ... [2024-10-14 21:14:36,583 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_fermat1-ll.c [2024-10-14 21:14:36,598 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 21:14:36,599 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 92 error locations. [2024-10-14 21:14:36,670 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 21:14:36,677 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;@5a296dbf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 21:14:36,677 INFO L334 AbstractCegarLoop]: Starting to check reachability of 92 error locations. [2024-10-14 21:14:36,683 INFO L276 IsEmpty]: Start isEmpty. Operand has 228 states, 118 states have (on average 1.847457627118644) internal successors, (218), 213 states have internal predecessors, (218), 12 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-10-14 21:14:36,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2024-10-14 21:14:36,688 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:14:36,688 INFO L215 NwaCegarLoop]: trace histogram [1, 1] [2024-10-14 21:14:36,689 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_36_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_36_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 90 more)] === [2024-10-14 21:14:36,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:14:36,693 INFO L85 PathProgramCache]: Analyzing trace with hash 10133, now seen corresponding path program 1 times [2024-10-14 21:14:36,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:14:36,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712341931] [2024-10-14 21:14:36,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:14:36,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:14:36,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:14:36,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:14:36,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:14:36,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712341931] [2024-10-14 21:14:36,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712341931] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:14:36,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:14:36,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 21:14:36,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445282168] [2024-10-14 21:14:36,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:14:36,941 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 21:14:36,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:14:36,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 21:14:36,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 21:14:36,961 INFO L87 Difference]: Start difference. First operand has 228 states, 118 states have (on average 1.847457627118644) internal successors, (218), 213 states have internal predecessors, (218), 12 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2024-10-14 21:14:37,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:14:37,057 INFO L93 Difference]: Finished difference Result 439 states and 481 transitions. [2024-10-14 21:14:37,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 21:14:37,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) Word has length 2 [2024-10-14 21:14:37,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:14:37,067 INFO L225 Difference]: With dead ends: 439 [2024-10-14 21:14:37,067 INFO L226 Difference]: Without dead ends: 219 [2024-10-14 21:14:37,071 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 21:14:37,075 INFO L432 NwaCegarLoop]: 207 mSDtfsCounter, 15 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 21:14:37,076 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 410 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 21:14:37,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2024-10-14 21:14:37,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 219. [2024-10-14 21:14:37,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 117 states have (on average 1.7521367521367521) internal successors, (205), 205 states have internal predecessors, (205), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-10-14 21:14:37,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 227 transitions. [2024-10-14 21:14:37,116 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 227 transitions. Word has length 2 [2024-10-14 21:14:37,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:14:37,117 INFO L471 AbstractCegarLoop]: Abstraction has 219 states and 227 transitions. [2024-10-14 21:14:37,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 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) [2024-10-14 21:14:37,117 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 227 transitions. [2024-10-14 21:14:37,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-10-14 21:14:37,118 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:14:37,118 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-10-14 21:14:37,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 21:14:37,118 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_36_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_36_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 90 more)] === [2024-10-14 21:14:37,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:14:37,119 INFO L85 PathProgramCache]: Analyzing trace with hash 314338, now seen corresponding path program 1 times [2024-10-14 21:14:37,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:14:37,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533876356] [2024-10-14 21:14:37,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:14:37,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:14:37,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:14:37,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:14:37,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:14:37,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533876356] [2024-10-14 21:14:37,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533876356] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:14:37,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:14:37,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 21:14:37,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620061930] [2024-10-14 21:14:37,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:14:37,202 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 21:14:37,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:14:37,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 21:14:37,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 21:14:37,203 INFO L87 Difference]: Start difference. First operand 219 states and 227 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2024-10-14 21:14:37,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:14:37,254 INFO L93 Difference]: Finished difference Result 219 states and 227 transitions. [2024-10-14 21:14:37,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 21:14:37,257 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) Word has length 3 [2024-10-14 21:14:37,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:14:37,258 INFO L225 Difference]: With dead ends: 219 [2024-10-14 21:14:37,258 INFO L226 Difference]: Without dead ends: 215 [2024-10-14 21:14:37,258 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 21:14:37,259 INFO L432 NwaCegarLoop]: 204 mSDtfsCounter, 14 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 21:14:37,260 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 404 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 21:14:37,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2024-10-14 21:14:37,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2024-10-14 21:14:37,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 117 states have (on average 1.7179487179487178) internal successors, (201), 201 states have internal predecessors, (201), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-10-14 21:14:37,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 223 transitions. [2024-10-14 21:14:37,280 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 223 transitions. Word has length 3 [2024-10-14 21:14:37,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:14:37,280 INFO L471 AbstractCegarLoop]: Abstraction has 215 states and 223 transitions. [2024-10-14 21:14:37,280 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2024-10-14 21:14:37,280 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 223 transitions. [2024-10-14 21:14:37,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-10-14 21:14:37,281 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:14:37,281 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:14:37,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 21:14:37,281 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_36_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_36_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 90 more)] === [2024-10-14 21:14:37,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:14:37,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1753349850, now seen corresponding path program 1 times [2024-10-14 21:14:37,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:14:37,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290877766] [2024-10-14 21:14:37,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:14:37,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:14:37,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 21:14:37,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1905719511] [2024-10-14 21:14:37,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:14:37,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:14:37,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:14:37,309 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) [2024-10-14 21:14:37,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-14 21:14:37,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:14:37,377 INFO L255 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-10-14 21:14:37,380 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 21:14:37,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:14:37,427 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 21:14:37,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:14:37,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290877766] [2024-10-14 21:14:37,428 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 21:14:37,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905719511] [2024-10-14 21:14:37,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1905719511] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:14:37,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:14:37,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 21:14:37,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598590155] [2024-10-14 21:14:37,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:14:37,429 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 21:14:37,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:14:37,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 21:14:37,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 21:14:37,430 INFO L87 Difference]: Start difference. First operand 215 states and 223 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2024-10-14 21:14:37,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:14:37,471 INFO L93 Difference]: Finished difference Result 215 states and 223 transitions. [2024-10-14 21:14:37,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 21:14:37,475 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) Word has length 7 [2024-10-14 21:14:37,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:14:37,476 INFO L225 Difference]: With dead ends: 215 [2024-10-14 21:14:37,476 INFO L226 Difference]: Without dead ends: 213 [2024-10-14 21:14:37,476 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 21:14:37,477 INFO L432 NwaCegarLoop]: 204 mSDtfsCounter, 10 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 21:14:37,477 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 404 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 21:14:37,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2024-10-14 21:14:37,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2024-10-14 21:14:37,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 117 states have (on average 1.7008547008547008) internal successors, (199), 199 states have internal predecessors, (199), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-10-14 21:14:37,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 221 transitions. [2024-10-14 21:14:37,492 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 221 transitions. Word has length 7 [2024-10-14 21:14:37,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:14:37,493 INFO L471 AbstractCegarLoop]: Abstraction has 213 states and 221 transitions. [2024-10-14 21:14:37,493 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 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) [2024-10-14 21:14:37,493 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 221 transitions. [2024-10-14 21:14:37,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-10-14 21:14:37,496 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:14:37,497 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:14:37,511 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-14 21:14:37,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:14:37,702 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_36_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_36_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 90 more)] === [2024-10-14 21:14:37,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:14:37,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1126516953, now seen corresponding path program 1 times [2024-10-14 21:14:37,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:14:37,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925827475] [2024-10-14 21:14:37,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:14:37,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:14:37,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 21:14:37,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [564340842] [2024-10-14 21:14:37,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:14:37,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:14:37,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:14:37,755 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) [2024-10-14 21:14:37,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-14 21:14:37,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:14:37,829 INFO L255 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-10-14 21:14:37,830 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 21:14:37,881 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 [2024-10-14 21:14:37,984 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 [2024-10-14 21:14:37,993 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-14 21:14:37,993 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 21:14:37,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:14:37,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925827475] [2024-10-14 21:14:37,994 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 21:14:37,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564340842] [2024-10-14 21:14:37,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564340842] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:14:37,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:14:37,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 21:14:37,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509429017] [2024-10-14 21:14:37,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:14:37,995 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 21:14:37,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:14:37,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 21:14:37,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-10-14 21:14:37,996 INFO L87 Difference]: Start difference. First operand 213 states and 221 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-14 21:14:38,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:14:38,102 INFO L93 Difference]: Finished difference Result 213 states and 221 transitions. [2024-10-14 21:14:38,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 21:14:38,102 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 26 [2024-10-14 21:14:38,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:14:38,104 INFO L225 Difference]: With dead ends: 213 [2024-10-14 21:14:38,104 INFO L226 Difference]: Without dead ends: 212 [2024-10-14 21:14:38,104 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-10-14 21:14:38,105 INFO L432 NwaCegarLoop]: 206 mSDtfsCounter, 198 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 21:14:38,105 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 588 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 21:14:38,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2024-10-14 21:14:38,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2024-10-14 21:14:38,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 117 states have (on average 1.6923076923076923) internal successors, (198), 198 states have internal predecessors, (198), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-10-14 21:14:38,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 220 transitions. [2024-10-14 21:14:38,117 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 220 transitions. Word has length 26 [2024-10-14 21:14:38,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:14:38,118 INFO L471 AbstractCegarLoop]: Abstraction has 212 states and 220 transitions. [2024-10-14 21:14:38,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-14 21:14:38,119 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 220 transitions. [2024-10-14 21:14:38,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-10-14 21:14:38,119 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:14:38,119 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:14:38,133 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-10-14 21:14:38,320 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,SelfDestructingSolverStorable3 [2024-10-14 21:14:38,320 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_36_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_36_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 90 more)] === [2024-10-14 21:14:38,321 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:14:38,321 INFO L85 PathProgramCache]: Analyzing trace with hash 562287418, now seen corresponding path program 1 times [2024-10-14 21:14:38,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:14:38,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141500222] [2024-10-14 21:14:38,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:14:38,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:14:38,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:14:38,718 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-14 21:14:38,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:14:38,722 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-10-14 21:14:38,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:14:38,789 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-14 21:14:38,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:14:38,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141500222] [2024-10-14 21:14:38,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141500222] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:14:38,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:14:38,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 21:14:38,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800055102] [2024-10-14 21:14:38,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:14:38,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 21:14:38,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:14:38,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 21:14:38,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 21:14:38,793 INFO L87 Difference]: Start difference. First operand 212 states and 220 transitions. Second operand has 7 states, 5 states have (on average 4.6) internal successors, (23), 7 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-14 21:14:38,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:14:38,900 INFO L93 Difference]: Finished difference Result 212 states and 220 transitions. [2024-10-14 21:14:38,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 21:14:38,901 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 4.6) internal successors, (23), 7 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 27 [2024-10-14 21:14:38,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:14:38,902 INFO L225 Difference]: With dead ends: 212 [2024-10-14 21:14:38,902 INFO L226 Difference]: Without dead ends: 211 [2024-10-14 21:14:38,903 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-10-14 21:14:38,905 INFO L432 NwaCegarLoop]: 211 mSDtfsCounter, 3 mSDsluCounter, 1014 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1225 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 21:14:38,905 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1225 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 21:14:38,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2024-10-14 21:14:38,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2024-10-14 21:14:38,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 211 states, 117 states have (on average 1.6837606837606838) internal successors, (197), 197 states have internal predecessors, (197), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-10-14 21:14:38,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 219 transitions. [2024-10-14 21:14:38,926 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 219 transitions. Word has length 27 [2024-10-14 21:14:38,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:14:38,926 INFO L471 AbstractCegarLoop]: Abstraction has 211 states and 219 transitions. [2024-10-14 21:14:38,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 4.6) internal successors, (23), 7 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-14 21:14:38,926 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 219 transitions. [2024-10-14 21:14:38,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-10-14 21:14:38,927 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:14:38,927 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:14:38,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 21:14:38,927 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_33_to_36_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_33_to_36_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_33_to_36_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 90 more)] === [2024-10-14 21:14:38,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:14:38,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1227049951, now seen corresponding path program 1 times [2024-10-14 21:14:38,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:14:38,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597770245] [2024-10-14 21:14:38,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:14:38,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:14:38,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat