./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_egcd2-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_egcd2-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 020f2d3a270ed8dfae4a7c8fa8db16a8ad645d088f685c7c500cf3124112cf45 --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 21:13:45,527 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 21:13:45,608 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-14 21:13:45,615 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 21:13:45,617 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 21:13:45,646 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 21:13:45,646 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 21:13:45,647 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 21:13:45,647 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 21:13:45,648 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 21:13:45,648 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 21:13:45,648 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 21:13:45,649 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 21:13:45,649 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 21:13:45,649 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 21:13:45,650 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 21:13:45,650 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-14 21:13:45,650 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 21:13:45,651 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 21:13:45,653 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 21:13:45,656 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 21:13:45,656 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-14 21:13:45,657 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 21:13:45,657 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-14 21:13:45,658 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 21:13:45,658 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-14 21:13:45,658 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 21:13:45,658 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 21:13:45,659 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-14 21:13:45,659 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 21:13:45,659 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 21:13:45,659 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 21:13:45,660 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 21:13:45,660 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 21:13:45,660 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 21:13:45,661 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 21:13:45,661 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 21:13:45,661 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-14 21:13:45,662 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 21:13:45,662 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 21:13:45,662 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 21:13:45,662 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 21:13:45,663 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 21:13:45,663 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 21:13:45,663 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 020f2d3a270ed8dfae4a7c8fa8db16a8ad645d088f685c7c500cf3124112cf45 [2024-10-14 21:13:45,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 21:13:45,939 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 21:13:45,942 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 21:13:45,943 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 21:13:45,944 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 21:13:45,945 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd2-ll.c [2024-10-14 21:13:47,453 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 21:13:47,678 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 21:13:47,680 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd2-ll.c [2024-10-14 21:13:47,691 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e9c6ea73/05d8993bcaa34760a33cf4d49755bfda/FLAGe11218787 [2024-10-14 21:13:48,034 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e9c6ea73/05d8993bcaa34760a33cf4d49755bfda [2024-10-14 21:13:48,036 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 21:13:48,038 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 21:13:48,039 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 21:13:48,039 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 21:13:48,043 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 21:13:48,044 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:13:48" (1/1) ... [2024-10-14 21:13:48,045 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@121d6a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:48, skipping insertion in model container [2024-10-14 21:13:48,045 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:13:48" (1/1) ... [2024-10-14 21:13:48,071 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 21:13:48,251 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 21:13:48,265 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 21:13:48,305 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 21:13:48,325 INFO L204 MainTranslator]: Completed translation [2024-10-14 21:13:48,326 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:48 WrapperNode [2024-10-14 21:13:48,329 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 21:13:48,330 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 21:13:48,330 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 21:13:48,330 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 21:13:48,337 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:48" (1/1) ... [2024-10-14 21:13:48,350 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:48" (1/1) ... [2024-10-14 21:13:48,373 INFO L138 Inliner]: procedures = 17, calls = 142, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 159 [2024-10-14 21:13:48,374 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 21:13:48,375 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 21:13:48,375 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 21:13:48,375 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 21:13:48,383 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:48" (1/1) ... [2024-10-14 21:13:48,383 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:48" (1/1) ... [2024-10-14 21:13:48,387 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:48" (1/1) ... [2024-10-14 21:13:48,409 INFO L175 MemorySlicer]: Split 86 memory accesses to 13 slices as follows [2, 12, 9, 3, 7, 3, 10, 7, 7, 8, 5, 8, 5]. 14 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. The 22 writes are split as follows [0, 1, 1, 1, 3, 1, 2, 2, 3, 2, 2, 2, 2]. [2024-10-14 21:13:48,409 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:48" (1/1) ... [2024-10-14 21:13:48,410 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:48" (1/1) ... [2024-10-14 21:13:48,425 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:48" (1/1) ... [2024-10-14 21:13:48,433 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:48" (1/1) ... [2024-10-14 21:13:48,435 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:48" (1/1) ... [2024-10-14 21:13:48,437 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:48" (1/1) ... [2024-10-14 21:13:48,444 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 21:13:48,445 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 21:13:48,445 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 21:13:48,445 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 21:13:48,446 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:48" (1/1) ... [2024-10-14 21:13:48,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 21:13:48,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:13:48,473 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 21:13:48,476 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 21:13:48,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 21:13:48,517 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-14 21:13:48,517 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-14 21:13:48,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 21:13:48,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 21:13:48,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-14 21:13:48,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-14 21:13:48,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-14 21:13:48,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-14 21:13:48,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-14 21:13:48,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-10-14 21:13:48,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-10-14 21:13:48,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-10-14 21:13:48,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-10-14 21:13:48,520 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-10-14 21:13:48,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-10-14 21:13:48,521 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-14 21:13:48,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-14 21:13:48,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-14 21:13:48,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-14 21:13:48,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-14 21:13:48,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-10-14 21:13:48,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-10-14 21:13:48,521 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-10-14 21:13:48,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-10-14 21:13:48,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-10-14 21:13:48,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-10-14 21:13:48,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-10-14 21:13:48,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-10-14 21:13:48,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-10-14 21:13:48,522 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_45_to_53_0 [2024-10-14 21:13:48,522 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_45_to_53_0 [2024-10-14 21:13:48,522 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_39_to_65_0 [2024-10-14 21:13:48,523 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_39_to_65_0 [2024-10-14 21:13:48,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 21:13:48,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 21:13:48,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-14 21:13:48,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-14 21:13:48,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-14 21:13:48,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-14 21:13:48,526 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-10-14 21:13:48,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-10-14 21:13:48,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-10-14 21:13:48,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-10-14 21:13:48,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-10-14 21:13:48,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-10-14 21:13:48,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-10-14 21:13:48,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-10-14 21:13:48,528 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-10-14 21:13:48,528 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-14 21:13:48,528 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-14 21:13:48,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-14 21:13:48,693 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 21:13:48,695 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 21:13:49,710 INFO L? ?]: Removed 217 outVars from TransFormulas that were not future-live. [2024-10-14 21:13:49,710 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 21:13:49,754 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 21:13:49,754 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-14 21:13:49,754 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:13:49 BoogieIcfgContainer [2024-10-14 21:13:49,754 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 21:13:49,758 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 21:13:49,758 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 21:13:49,761 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 21:13:49,762 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:13:48" (1/3) ... [2024-10-14 21:13:49,762 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16fd5088 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:13:49, skipping insertion in model container [2024-10-14 21:13:49,763 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:13:48" (2/3) ... [2024-10-14 21:13:49,763 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16fd5088 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:13:49, skipping insertion in model container [2024-10-14 21:13:49,764 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:13:49" (3/3) ... [2024-10-14 21:13:49,765 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_egcd2-ll.c [2024-10-14 21:13:49,781 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 21:13:49,782 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 64 error locations. [2024-10-14 21:13:49,854 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 21:13:49,861 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;@3f73a0e4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 21:13:49,861 INFO L334 AbstractCegarLoop]: Starting to check reachability of 64 error locations. [2024-10-14 21:13:49,866 INFO L276 IsEmpty]: Start isEmpty. Operand has 174 states, 91 states have (on average 1.7692307692307692) internal successors, (161), 157 states have internal predecessors, (161), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2024-10-14 21:13:49,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-14 21:13:49,874 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:13:49,874 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:13:49,876 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_39_to_65_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_39_to_65_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2024-10-14 21:13:49,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:13:49,881 INFO L85 PathProgramCache]: Analyzing trace with hash -235006959, now seen corresponding path program 1 times [2024-10-14 21:13:49,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:13:49,888 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592856088] [2024-10-14 21:13:49,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:13:49,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:13:50,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:13:50,122 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 21:13:50,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:13:50,131 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-14 21:13:50,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:13:50,141 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 21:13:50,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:13:50,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592856088] [2024-10-14 21:13:50,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592856088] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:13:50,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:13:50,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 21:13:50,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780381079] [2024-10-14 21:13:50,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:13:50,153 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-14 21:13:50,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:13:50,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-14 21:13:50,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 21:13:50,181 INFO L87 Difference]: Start difference. First operand has 174 states, 91 states have (on average 1.7692307692307692) internal successors, (161), 157 states have internal predecessors, (161), 14 states have call successors, (14), 4 states have call predecessors, (14), 4 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-14 21:13:50,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:13:50,246 INFO L93 Difference]: Finished difference Result 346 states and 389 transitions. [2024-10-14 21:13:50,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-14 21:13:50,249 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 14 [2024-10-14 21:13:50,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:13:50,257 INFO L225 Difference]: With dead ends: 346 [2024-10-14 21:13:50,257 INFO L226 Difference]: Without dead ends: 171 [2024-10-14 21:13:50,266 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-14 21:13:50,271 INFO L432 NwaCegarLoop]: 183 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 21:13:50,272 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 183 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 21:13:50,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-10-14 21:13:50,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2024-10-14 21:13:50,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 90 states have (on average 1.7222222222222223) internal successors, (155), 155 states have internal predecessors, (155), 13 states have call successors, (13), 4 states have call predecessors, (13), 4 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-14 21:13:50,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 181 transitions. [2024-10-14 21:13:50,320 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 181 transitions. Word has length 14 [2024-10-14 21:13:50,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:13:50,320 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 181 transitions. [2024-10-14 21:13:50,321 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-14 21:13:50,321 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 181 transitions. [2024-10-14 21:13:50,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-14 21:13:50,322 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:13:50,322 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:13:50,322 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 21:13:50,322 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_39_to_65_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_39_to_65_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2024-10-14 21:13:50,323 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:13:50,323 INFO L85 PathProgramCache]: Analyzing trace with hash 467904661, now seen corresponding path program 1 times [2024-10-14 21:13:50,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:13:50,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477546475] [2024-10-14 21:13:50,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:13:50,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:13:50,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 21:13:50,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [21336328] [2024-10-14 21:13:50,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:13:50,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:13:50,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:13:50,444 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 21:13:50,452 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 21:13:50,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:13:50,625 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-14 21:13:50,633 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 21:13:50,696 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 21:13:50,928 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 21:13:50,947 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 21:13:50,948 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2024-10-14 21:13:50,978 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 21:13:50,978 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 21:13:50,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:13:50,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477546475] [2024-10-14 21:13:50,979 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 21:13:50,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21336328] [2024-10-14 21:13:50,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21336328] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:13:50,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:13:50,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-14 21:13:50,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729267756] [2024-10-14 21:13:50,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:13:50,982 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-14 21:13:50,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:13:50,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-14 21:13:50,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-10-14 21:13:50,983 INFO L87 Difference]: Start difference. First operand 171 states and 181 transitions. Second operand has 12 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 2 states have call successors, (2), 2 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 21:13:55,009 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-14 21:13:55,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:13:55,388 INFO L93 Difference]: Finished difference Result 175 states and 184 transitions. [2024-10-14 21:13:55,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-14 21:13:55,389 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 2 states have call successors, (2), 2 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 14 [2024-10-14 21:13:55,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:13:55,390 INFO L225 Difference]: With dead ends: 175 [2024-10-14 21:13:55,391 INFO L226 Difference]: Without dead ends: 174 [2024-10-14 21:13:55,391 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-10-14 21:13:55,392 INFO L432 NwaCegarLoop]: 164 mSDtfsCounter, 212 mSDsluCounter, 905 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 1069 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2024-10-14 21:13:55,396 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 1069 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 200 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2024-10-14 21:13:55,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-10-14 21:13:55,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2024-10-14 21:13:55,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 93 states have (on average 1.6881720430107527) internal successors, (157), 157 states have internal predecessors, (157), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-14 21:13:55,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 183 transitions. [2024-10-14 21:13:55,416 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 183 transitions. Word has length 14 [2024-10-14 21:13:55,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:13:55,416 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 183 transitions. [2024-10-14 21:13:55,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 8 states have internal predecessors, (10), 2 states have call successors, (2), 2 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 21:13:55,416 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 183 transitions. [2024-10-14 21:13:55,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-14 21:13:55,417 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:13:55,417 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:13:55,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-10-14 21:13:55,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:13:55,622 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_39_to_65_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_39_to_65_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2024-10-14 21:13:55,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:13:55,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1620142783, now seen corresponding path program 1 times [2024-10-14 21:13:55,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:13:55,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739476674] [2024-10-14 21:13:55,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:13:55,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:13:55,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 21:13:55,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1541109287] [2024-10-14 21:13:55,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:13:55,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:13:55,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:13:55,688 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 21:13:55,689 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 21:13:55,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:13:55,843 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-14 21:13:55,845 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 21:13:55,861 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 21:13:55,870 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 21:13:56,093 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 21:13:56,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 25 [2024-10-14 21:13:56,114 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 21:13:56,114 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2024-10-14 21:13:56,138 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 21:13:56,138 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 21:13:56,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:13:56,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739476674] [2024-10-14 21:13:56,139 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 21:13:56,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1541109287] [2024-10-14 21:13:56,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1541109287] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:13:56,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:13:56,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-14 21:13:56,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950075484] [2024-10-14 21:13:56,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:13:56,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-14 21:13:56,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:13:56,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-14 21:13:56,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-14 21:13:56,141 INFO L87 Difference]: Start difference. First operand 174 states and 183 transitions. Second operand has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 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 21:13:56,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:13:56,563 INFO L93 Difference]: Finished difference Result 174 states and 183 transitions. [2024-10-14 21:13:56,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 21:13:56,564 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 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 15 [2024-10-14 21:13:56,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:13:56,565 INFO L225 Difference]: With dead ends: 174 [2024-10-14 21:13:56,565 INFO L226 Difference]: Without dead ends: 173 [2024-10-14 21:13:56,565 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-10-14 21:13:56,566 INFO L432 NwaCegarLoop]: 156 mSDtfsCounter, 162 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 955 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 21:13:56,567 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 955 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 21:13:56,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-10-14 21:13:56,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2024-10-14 21:13:56,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 93 states have (on average 1.6774193548387097) internal successors, (156), 156 states have internal predecessors, (156), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-14 21:13:56,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 182 transitions. [2024-10-14 21:13:56,590 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 182 transitions. Word has length 15 [2024-10-14 21:13:56,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:13:56,594 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 182 transitions. [2024-10-14 21:13:56,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 7 states have internal predecessors, (11), 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 21:13:56,595 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 182 transitions. [2024-10-14 21:13:56,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-10-14 21:13:56,595 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:13:56,595 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:13:56,617 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 21:13:56,796 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,SelfDestructingSolverStorable2 [2024-10-14 21:13:56,796 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_39_to_65_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_39_to_65_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2024-10-14 21:13:56,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:13:56,797 INFO L85 PathProgramCache]: Analyzing trace with hash -1315181097, now seen corresponding path program 1 times [2024-10-14 21:13:56,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:13:56,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982511722] [2024-10-14 21:13:56,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:13:56,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:13:56,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 21:13:56,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1218215118] [2024-10-14 21:13:56,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:13:56,850 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:13:56,850 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:13:56,854 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) [2024-10-14 21:13:56,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-14 21:13:56,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:13:56,992 INFO L255 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-14 21:13:56,994 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 21:13:57,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2024-10-14 21:13:57,043 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 21:13:57,044 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 21:13:57,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:13:57,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982511722] [2024-10-14 21:13:57,044 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 21:13:57,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218215118] [2024-10-14 21:13:57,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218215118] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:13:57,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:13:57,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 21:13:57,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487273468] [2024-10-14 21:13:57,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:13:57,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 21:13:57,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:13:57,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 21:13:57,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 21:13:57,046 INFO L87 Difference]: Start difference. First operand 173 states and 182 transitions. Second operand has 7 states, 5 states have (on average 2.4) internal successors, (12), 7 states have internal predecessors, (12), 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 21:13:57,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:13:57,195 INFO L93 Difference]: Finished difference Result 173 states and 182 transitions. [2024-10-14 21:13:57,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 21:13:57,196 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 7 states have internal predecessors, (12), 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 16 [2024-10-14 21:13:57,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:13:57,197 INFO L225 Difference]: With dead ends: 173 [2024-10-14 21:13:57,197 INFO L226 Difference]: Without dead ends: 172 [2024-10-14 21:13:57,197 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 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 21:13:57,198 INFO L432 NwaCegarLoop]: 165 mSDtfsCounter, 24 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 21:13:57,198 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 936 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 21:13:57,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-10-14 21:13:57,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2024-10-14 21:13:57,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 93 states have (on average 1.6666666666666667) internal successors, (155), 155 states have internal predecessors, (155), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-14 21:13:57,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 181 transitions. [2024-10-14 21:13:57,212 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 181 transitions. Word has length 16 [2024-10-14 21:13:57,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:13:57,213 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 181 transitions. [2024-10-14 21:13:57,213 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.4) internal successors, (12), 7 states have internal predecessors, (12), 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 21:13:57,213 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 181 transitions. [2024-10-14 21:13:57,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-14 21:13:57,213 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:13:57,214 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:13:57,231 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-14 21:13:57,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:13:57,414 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_39_to_65_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_39_to_65_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2024-10-14 21:13:57,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:13:57,415 INFO L85 PathProgramCache]: Analyzing trace with hash -2115908159, now seen corresponding path program 1 times [2024-10-14 21:13:57,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:13:57,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526233609] [2024-10-14 21:13:57,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:13:57,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:13:57,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 21:13:57,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1907185151] [2024-10-14 21:13:57,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:13:57,455 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:13:57,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:13:57,457 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) [2024-10-14 21:13:57,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-14 21:13:57,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:13:57,603 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-10-14 21:13:57,605 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 21:13:57,612 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 21:13:57,731 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-14 21:13:57,731 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 28 [2024-10-14 21:13:57,760 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 21:13:57,760 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 21:13:57,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:13:57,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526233609] [2024-10-14 21:13:57,761 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 21:13:57,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907185151] [2024-10-14 21:13:57,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907185151] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:13:57,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:13:57,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-14 21:13:57,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423379503] [2024-10-14 21:13:57,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:13:57,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-14 21:13:57,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:13:57,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-14 21:13:57,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-14 21:13:57,766 INFO L87 Difference]: Start difference. First operand 172 states and 181 transitions. Second operand has 9 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 8 states have internal predecessors, (13), 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 21:13:58,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:13:58,076 INFO L93 Difference]: Finished difference Result 172 states and 181 transitions. [2024-10-14 21:13:58,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-14 21:13:58,077 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 8 states have internal predecessors, (13), 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 17 [2024-10-14 21:13:58,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:13:58,078 INFO L225 Difference]: With dead ends: 172 [2024-10-14 21:13:58,078 INFO L226 Difference]: Without dead ends: 171 [2024-10-14 21:13:58,079 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-10-14 21:13:58,080 INFO L432 NwaCegarLoop]: 158 mSDtfsCounter, 158 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-14 21:13:58,080 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 846 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-14 21:13:58,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-10-14 21:13:58,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2024-10-14 21:13:58,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 93 states have (on average 1.6559139784946237) internal successors, (154), 154 states have internal predecessors, (154), 13 states have call successors, (13), 5 states have call predecessors, (13), 5 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-10-14 21:13:58,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 180 transitions. [2024-10-14 21:13:58,090 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 180 transitions. Word has length 17 [2024-10-14 21:13:58,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:13:58,090 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 180 transitions. [2024-10-14 21:13:58,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.8571428571428572) internal successors, (13), 8 states have internal predecessors, (13), 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 21:13:58,091 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 180 transitions. [2024-10-14 21:13:58,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-14 21:13:58,091 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:13:58,092 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:13:58,109 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-14 21:13:58,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:13:58,292 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_45_to_53_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_39_to_65_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_39_to_65_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2024-10-14 21:13:58,293 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:13:58,293 INFO L85 PathProgramCache]: Analyzing trace with hash 397010718, now seen corresponding path program 1 times [2024-10-14 21:13:58,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:13:58,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582404966] [2024-10-14 21:13:58,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:13:58,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:13:58,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-14 21:13:58,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [13187494] [2024-10-14 21:13:58,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:13:58,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:13:58,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:13:58,360 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 21:13:58,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-14 21:13:58,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:13:58,531 INFO L255 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-14 21:13:58,533 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 21:13:58,545 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 [2024-10-14 21:13:58,570 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-14 21:13:58,570 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-14 21:13:58,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:13:58,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582404966] [2024-10-14 21:13:58,571 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-14 21:13:58,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13187494] [2024-10-14 21:13:58,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13187494] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 21:13:58,571 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 21:13:58,571 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-14 21:13:58,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843157620] [2024-10-14 21:13:58,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 21:13:58,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-14 21:13:58,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:13:58,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-14 21:13:58,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-14 21:13:58,572 INFO L87 Difference]: Start difference. First operand 171 states and 180 transitions. Second operand has 6 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-14 21:13:58,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:13:58,732 INFO L93 Difference]: Finished difference Result 282 states and 297 transitions. [2024-10-14 21:13:58,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 21:13:58,734 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 37 [2024-10-14 21:13:58,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:13:58,739 INFO L225 Difference]: With dead ends: 282 [2024-10-14 21:13:58,739 INFO L226 Difference]: Without dead ends: 280 [2024-10-14 21:13:58,740 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-14 21:13:58,740 INFO L432 NwaCegarLoop]: 163 mSDtfsCounter, 192 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 21:13:58,740 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 793 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 21:13:58,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2024-10-14 21:13:58,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 220. [2024-10-14 21:13:58,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 137 states have (on average 1.7007299270072993) internal successors, (233), 198 states have internal predecessors, (233), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2024-10-14 21:13:58,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 268 transitions. [2024-10-14 21:13:58,759 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 268 transitions. Word has length 37 [2024-10-14 21:13:58,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:13:58,759 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 268 transitions. [2024-10-14 21:13:58,759 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-14 21:13:58,759 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 268 transitions. [2024-10-14 21:13:58,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-14 21:13:58,760 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:13:58,760 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:13:58,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-10-14 21:13:58,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:13:58,961 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_39_to_65_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_39_to_65_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2024-10-14 21:13:58,961 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:13:58,962 INFO L85 PathProgramCache]: Analyzing trace with hash 391088007, now seen corresponding path program 1 times [2024-10-14 21:13:58,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:13:58,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108167590] [2024-10-14 21:13:58,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:13:58,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:13:58,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:13:59,325 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-14 21:13:59,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:13:59,330 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-14 21:13:59,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:13:59,361 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-14 21:13:59,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:13:59,366 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-14 21:13:59,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:13:59,397 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-14 21:13:59,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:13:59,477 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-14 21:13:59,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 21:13:59,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108167590] [2024-10-14 21:13:59,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108167590] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-14 21:13:59,478 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191158352] [2024-10-14 21:13:59,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:13:59,478 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:13:59,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 21:13:59,480 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-14 21:13:59,481 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-14 21:13:59,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 21:13:59,638 INFO L255 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-14 21:13:59,640 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-14 21:13:59,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-10-14 21:13:59,690 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 21:13:59,888 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-14 21:13:59,888 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-14 21:14:00,246 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-14 21:14:00,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191158352] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-14 21:14:00,246 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-14 21:14:00,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 11] total 25 [2024-10-14 21:14:00,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731052631] [2024-10-14 21:14:00,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-14 21:14:00,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-14 21:14:00,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 21:14:00,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-14 21:14:00,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2024-10-14 21:14:00,249 INFO L87 Difference]: Start difference. First operand 220 states and 268 transitions. Second operand has 25 states, 22 states have (on average 2.0) internal successors, (44), 20 states have internal predecessors, (44), 6 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2024-10-14 21:14:04,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-14 21:14:09,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-14 21:14:14,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-14 21:14:18,669 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-14 21:14:22,673 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-14 21:14:26,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-14 21:14:26,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 21:14:26,729 INFO L93 Difference]: Finished difference Result 415 states and 506 transitions. [2024-10-14 21:14:26,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-14 21:14:26,729 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 2.0) internal successors, (44), 20 states have internal predecessors, (44), 6 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 37 [2024-10-14 21:14:26,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 21:14:26,731 INFO L225 Difference]: With dead ends: 415 [2024-10-14 21:14:26,731 INFO L226 Difference]: Without dead ends: 382 [2024-10-14 21:14:26,732 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 63 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=235, Invalid=1405, Unknown=0, NotChecked=0, Total=1640 [2024-10-14 21:14:26,733 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 696 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 1633 mSolverCounterSat, 105 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 1745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1633 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.0s IncrementalHoareTripleChecker+Time [2024-10-14 21:14:26,733 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [705 Valid, 496 Invalid, 1745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1633 Invalid, 7 Unknown, 0 Unchecked, 26.0s Time] [2024-10-14 21:14:26,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2024-10-14 21:14:26,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 341. [2024-10-14 21:14:26,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 241 states have (on average 1.7136929460580912) internal successors, (413), 303 states have internal predecessors, (413), 27 states have call successors, (27), 11 states have call predecessors, (27), 13 states have return successors, (32), 26 states have call predecessors, (32), 27 states have call successors, (32) [2024-10-14 21:14:26,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 472 transitions. [2024-10-14 21:14:26,760 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 472 transitions. Word has length 37 [2024-10-14 21:14:26,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 21:14:26,761 INFO L471 AbstractCegarLoop]: Abstraction has 341 states and 472 transitions. [2024-10-14 21:14:26,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 2.0) internal successors, (44), 20 states have internal predecessors, (44), 6 states have call successors, (13), 5 states have call predecessors, (13), 7 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2024-10-14 21:14:26,761 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 472 transitions. [2024-10-14 21:14:26,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-14 21:14:26,762 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 21:14:26,762 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 21:14:26,780 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-14 21:14:26,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-14 21:14:26,963 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_45_to_53_0Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [func_to_recursive_line_39_to_65_0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, func_to_recursive_line_39_to_65_0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 62 more)] === [2024-10-14 21:14:26,963 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 21:14:26,963 INFO L85 PathProgramCache]: Analyzing trace with hash -724786912, now seen corresponding path program 1 times [2024-10-14 21:14:26,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 21:14:26,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945862393] [2024-10-14 21:14:26,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 21:14:26,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 21:14:27,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat