./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 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/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-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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-dev-84cfde4 [2024-10-11 21:16:40,349 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 21:16:40,389 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-11 21:16:40,393 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 21:16:40,393 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 21:16:40,409 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 21:16:40,409 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 21:16:40,410 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 21:16:40,410 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 21:16:40,410 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 21:16:40,411 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 21:16:40,411 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 21:16:40,411 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 21:16:40,412 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 21:16:40,412 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 21:16:40,412 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 21:16:40,413 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 21:16:40,413 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 21:16:40,413 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 21:16:40,414 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 21:16:40,414 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 21:16:40,414 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 21:16:40,415 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 21:16:40,415 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 21:16:40,415 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 21:16:40,416 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-11 21:16:40,416 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 21:16:40,416 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 21:16:40,416 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 21:16:40,417 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 21:16:40,417 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 21:16:40,417 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 21:16:40,417 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 21:16:40,418 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 21:16:40,418 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 21:16:40,418 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 21:16:40,418 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 21:16:40,419 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 21:16:40,419 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 21:16:40,419 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 21:16:40,419 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 21:16:40,425 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 21:16:40,426 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 21:16:40,426 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 21:16:40,426 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 020f2d3a270ed8dfae4a7c8fa8db16a8ad645d088f685c7c500cf3124112cf45 [2024-10-11 21:16:40,682 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 21:16:40,699 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 21:16:40,701 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 21:16:40,701 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 21:16:40,702 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 21:16:40,703 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd2-ll.c [2024-10-11 21:16:42,010 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 21:16:42,184 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 21:16:42,185 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd2-ll.c [2024-10-11 21:16:42,193 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/25fc4ef27/58fe1b7d01674b238e9a10a4530b5cab/FLAGdcbe89872 [2024-10-11 21:16:42,210 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/25fc4ef27/58fe1b7d01674b238e9a10a4530b5cab [2024-10-11 21:16:42,213 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 21:16:42,216 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 21:16:42,218 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 21:16:42,219 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 21:16:42,224 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 21:16:42,225 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 09:16:42" (1/1) ... [2024-10-11 21:16:42,226 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d50aae9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:16:42, skipping insertion in model container [2024-10-11 21:16:42,226 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 09:16:42" (1/1) ... [2024-10-11 21:16:42,260 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 21:16:42,484 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 21:16:42,491 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 21:16:42,515 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 21:16:42,527 INFO L204 MainTranslator]: Completed translation [2024-10-11 21:16:42,527 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:16:42 WrapperNode [2024-10-11 21:16:42,527 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 21:16:42,528 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 21:16:42,528 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 21:16:42,528 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 21:16:42,534 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:16:42" (1/1) ... [2024-10-11 21:16:42,541 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:16:42" (1/1) ... [2024-10-11 21:16:42,565 INFO L138 Inliner]: procedures = 17, calls = 142, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 159 [2024-10-11 21:16:42,566 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 21:16:42,566 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 21:16:42,566 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 21:16:42,567 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 21:16:42,580 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:16:42" (1/1) ... [2024-10-11 21:16:42,580 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:16:42" (1/1) ... [2024-10-11 21:16:42,584 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:16:42" (1/1) ... [2024-10-11 21:16:42,608 INFO L175 MemorySlicer]: Split 86 memory accesses to 13 slices as follows [2, 7, 5, 8, 10, 7, 3, 3, 7, 5, 8, 9, 12]. 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, 3, 2, 2, 2, 3, 1, 1, 2, 2, 2, 1, 1]. [2024-10-11 21:16:42,609 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:16:42" (1/1) ... [2024-10-11 21:16:42,612 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:16:42" (1/1) ... [2024-10-11 21:16:42,620 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:16:42" (1/1) ... [2024-10-11 21:16:42,621 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:16:42" (1/1) ... [2024-10-11 21:16:42,623 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:16:42" (1/1) ... [2024-10-11 21:16:42,624 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:16:42" (1/1) ... [2024-10-11 21:16:42,627 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 21:16:42,628 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 21:16:42,628 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 21:16:42,628 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 21:16:42,629 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:16:42" (1/1) ... [2024-10-11 21:16:42,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 21:16:42,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:16:42,671 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 21:16:42,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 21:16:42,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 21:16:42,734 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-11 21:16:42,734 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-11 21:16:42,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 21:16:42,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 21:16:42,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-11 21:16:42,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-11 21:16:42,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-11 21:16:42,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-11 21:16:42,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-11 21:16:42,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-10-11 21:16:42,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-10-11 21:16:42,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-10-11 21:16:42,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-10-11 21:16:42,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-10-11 21:16:42,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-10-11 21:16:42,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-11 21:16:42,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-11 21:16:42,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-11 21:16:42,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-11 21:16:42,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-11 21:16:42,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-10-11 21:16:42,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-10-11 21:16:42,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-10-11 21:16:42,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-10-11 21:16:42,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-10-11 21:16:42,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-10-11 21:16:42,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-10-11 21:16:42,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-10-11 21:16:42,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-10-11 21:16:42,737 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_45_to_53_0 [2024-10-11 21:16:42,737 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_45_to_53_0 [2024-10-11 21:16:42,738 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_39_to_65_0 [2024-10-11 21:16:42,738 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_39_to_65_0 [2024-10-11 21:16:42,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 21:16:42,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 21:16:42,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-11 21:16:42,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-11 21:16:42,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-11 21:16:42,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-11 21:16:42,738 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-10-11 21:16:42,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-10-11 21:16:42,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-10-11 21:16:42,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-10-11 21:16:42,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-10-11 21:16:42,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-10-11 21:16:42,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-10-11 21:16:42,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-10-11 21:16:42,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-10-11 21:16:42,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-11 21:16:42,739 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-11 21:16:42,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-11 21:16:42,901 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 21:16:42,904 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 21:16:43,870 INFO L? ?]: Removed 217 outVars from TransFormulas that were not future-live. [2024-10-11 21:16:43,870 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 21:16:43,896 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 21:16:43,897 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-11 21:16:43,897 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 09:16:43 BoogieIcfgContainer [2024-10-11 21:16:43,897 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 21:16:43,898 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 21:16:43,898 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 21:16:43,901 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 21:16:43,901 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 09:16:42" (1/3) ... [2024-10-11 21:16:43,902 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27f7ca95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 09:16:43, skipping insertion in model container [2024-10-11 21:16:43,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 09:16:42" (2/3) ... [2024-10-11 21:16:43,902 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27f7ca95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 09:16:43, skipping insertion in model container [2024-10-11 21:16:43,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 09:16:43" (3/3) ... [2024-10-11 21:16:43,903 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_egcd2-ll.c [2024-10-11 21:16:43,915 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 21:16:43,916 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 64 error locations. [2024-10-11 21:16:43,962 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 21:16:43,968 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;@4a5053bf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 21:16:43,968 INFO L334 AbstractCegarLoop]: Starting to check reachability of 64 error locations. [2024-10-11 21:16:43,972 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) [2024-10-11 21:16:43,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-11 21:16:43,977 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:16:43,977 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:16:43,978 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)] === [2024-10-11 21:16:43,981 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:16:43,982 INFO L85 PathProgramCache]: Analyzing trace with hash -235006959, now seen corresponding path program 1 times [2024-10-11 21:16:43,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:16:43,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215616660] [2024-10-11 21:16:43,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:16:43,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:16:44,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:16:44,216 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 21:16:44,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:16:44,229 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 21:16:44,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:16:44,291 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-11 21:16:44,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:16:44,292 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215616660] [2024-10-11 21:16:44,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215616660] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:16:44,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:16:44,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 21:16:44,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727598751] [2024-10-11 21:16:44,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:16:44,298 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 21:16:44,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:16:44,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 21:16:44,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 21:16:44,322 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) [2024-10-11 21:16:44,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:16:44,407 INFO L93 Difference]: Finished difference Result 346 states and 389 transitions. [2024-10-11 21:16:44,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 21:16:44,410 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 [2024-10-11 21:16:44,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:16:44,416 INFO L225 Difference]: With dead ends: 346 [2024-10-11 21:16:44,416 INFO L226 Difference]: Without dead ends: 171 [2024-10-11 21:16:44,420 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 [2024-10-11 21:16:44,422 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 [2024-10-11 21:16:44,423 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] [2024-10-11 21:16:44,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-10-11 21:16:44,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2024-10-11 21:16:44,453 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) [2024-10-11 21:16:44,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 181 transitions. [2024-10-11 21:16:44,460 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 181 transitions. Word has length 14 [2024-10-11 21:16:44,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:16:44,460 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 181 transitions. [2024-10-11 21:16:44,460 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) [2024-10-11 21:16:44,460 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 181 transitions. [2024-10-11 21:16:44,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-11 21:16:44,461 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:16:44,461 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:16:44,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 21:16:44,462 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)] === [2024-10-11 21:16:44,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:16:44,466 INFO L85 PathProgramCache]: Analyzing trace with hash 467904661, now seen corresponding path program 1 times [2024-10-11 21:16:44,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:16:44,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44249523] [2024-10-11 21:16:44,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:16:44,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:16:44,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:16:44,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1956905993] [2024-10-11 21:16:44,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:16:44,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:16:44,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:16:44,549 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:16:44,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 21:16:44,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:16:44,682 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-11 21:16:44,686 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:16:44,886 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 [2024-10-11 21:16:44,901 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 21:16:44,902 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 [2024-10-11 21:16:44,934 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:16:44,934 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 21:16:44,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:16:44,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44249523] [2024-10-11 21:16:44,935 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:16:44,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956905993] [2024-10-11 21:16:44,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956905993] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:16:44,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:16:44,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-11 21:16:44,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106333916] [2024-10-11 21:16:44,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:16:44,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-11 21:16:44,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:16:44,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-11 21:16:44,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-10-11 21:16:44,939 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) [2024-10-11 21:16:48,978 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] [2024-10-11 21:16:49,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:16:49,274 INFO L93 Difference]: Finished difference Result 175 states and 184 transitions. [2024-10-11 21:16:49,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 21:16:49,275 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 [2024-10-11 21:16:49,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:16:49,276 INFO L225 Difference]: With dead ends: 175 [2024-10-11 21:16:49,277 INFO L226 Difference]: Without dead ends: 174 [2024-10-11 21:16:49,281 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-10-11 21:16:49,282 INFO L432 NwaCegarLoop]: 164 mSDtfsCounter, 212 mSDsluCounter, 905 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s 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 [2024-10-11 21:16:49,282 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] [2024-10-11 21:16:49,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-10-11 21:16:49,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2024-10-11 21:16:49,300 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) [2024-10-11 21:16:49,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 183 transitions. [2024-10-11 21:16:49,302 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 183 transitions. Word has length 14 [2024-10-11 21:16:49,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:16:49,302 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 183 transitions. [2024-10-11 21:16:49,302 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) [2024-10-11 21:16:49,302 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 183 transitions. [2024-10-11 21:16:49,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-11 21:16:49,303 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:16:49,303 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:16:49,331 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 21:16:49,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:16:49,508 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)] === [2024-10-11 21:16:49,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:16:49,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1620142783, now seen corresponding path program 1 times [2024-10-11 21:16:49,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:16:49,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094658683] [2024-10-11 21:16:49,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:16:49,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:16:49,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:16:49,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [527972579] [2024-10-11 21:16:49,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:16:49,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:16:49,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:16:49,619 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:16:49,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 21:16:49,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:16:49,734 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-11 21:16:49,736 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:16:49,752 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 [2024-10-11 21:16:49,756 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 [2024-10-11 21:16:50,249 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 21:16:50,250 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 52 [2024-10-11 21:16:50,281 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 21:16:50,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 55 [2024-10-11 21:16:50,319 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 21:16:50,319 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 21:16:50,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:16:50,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094658683] [2024-10-11 21:16:50,320 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:16:50,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [527972579] [2024-10-11 21:16:50,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [527972579] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:16:50,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:16:50,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-11 21:16:50,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21225581] [2024-10-11 21:16:50,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:16:50,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-11 21:16:50,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:16:50,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-11 21:16:50,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-10-11 21:16:50,322 INFO L87 Difference]: Start difference. First operand 174 states and 183 transitions. Second operand has 13 states, 10 states have (on average 1.1) internal successors, (11), 8 states have internal predecessors, (11), 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) [2024-10-11 21:16:54,358 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] [2024-10-11 21:16:54,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:16:54,817 INFO L93 Difference]: Finished difference Result 174 states and 183 transitions. [2024-10-11 21:16:54,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-11 21:16:54,818 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 1.1) internal successors, (11), 8 states have internal predecessors, (11), 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 15 [2024-10-11 21:16:54,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:16:54,819 INFO L225 Difference]: With dead ends: 174 [2024-10-11 21:16:54,819 INFO L226 Difference]: Without dead ends: 173 [2024-10-11 21:16:54,819 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2024-10-11 21:16:54,820 INFO L432 NwaCegarLoop]: 158 mSDtfsCounter, 162 mSDsluCounter, 828 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-10-11 21:16:54,820 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 986 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 256 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2024-10-11 21:16:54,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-10-11 21:16:54,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2024-10-11 21:16:54,834 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) [2024-10-11 21:16:54,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 182 transitions. [2024-10-11 21:16:54,835 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 182 transitions. Word has length 15 [2024-10-11 21:16:54,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:16:54,835 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 182 transitions. [2024-10-11 21:16:54,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 1.1) internal successors, (11), 8 states have internal predecessors, (11), 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) [2024-10-11 21:16:54,835 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 182 transitions. [2024-10-11 21:16:54,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-10-11 21:16:54,836 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:16:54,836 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:16:54,853 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 21:16:55,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:16:55,041 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)] === [2024-10-11 21:16:55,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:16:55,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1315181097, now seen corresponding path program 1 times [2024-10-11 21:16:55,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:16:55,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948424014] [2024-10-11 21:16:55,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:16:55,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:16:55,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:16:55,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1707304451] [2024-10-11 21:16:55,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:16:55,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:16:55,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:16:55,096 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:16:55,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 21:16:55,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:16:55,216 INFO L255 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-11 21:16:55,217 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:16:55,245 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 [2024-10-11 21:16:55,258 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 21:16:55,258 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 21:16:55,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:16:55,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948424014] [2024-10-11 21:16:55,259 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:16:55,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1707304451] [2024-10-11 21:16:55,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1707304451] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:16:55,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:16:55,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 21:16:55,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055857986] [2024-10-11 21:16:55,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:16:55,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 21:16:55,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:16:55,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 21:16:55,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 21:16:55,260 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) [2024-10-11 21:16:55,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:16:55,383 INFO L93 Difference]: Finished difference Result 173 states and 182 transitions. [2024-10-11 21:16:55,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 21:16:55,383 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 [2024-10-11 21:16:55,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:16:55,384 INFO L225 Difference]: With dead ends: 173 [2024-10-11 21:16:55,384 INFO L226 Difference]: Without dead ends: 172 [2024-10-11 21:16:55,384 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 [2024-10-11 21:16:55,385 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 [2024-10-11 21:16:55,385 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] [2024-10-11 21:16:55,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-10-11 21:16:55,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2024-10-11 21:16:55,402 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) [2024-10-11 21:16:55,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 181 transitions. [2024-10-11 21:16:55,403 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 181 transitions. Word has length 16 [2024-10-11 21:16:55,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:16:55,403 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 181 transitions. [2024-10-11 21:16:55,403 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) [2024-10-11 21:16:55,403 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 181 transitions. [2024-10-11 21:16:55,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-11 21:16:55,404 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:16:55,404 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 21:16:55,420 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 21:16:55,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:16:55,605 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)] === [2024-10-11 21:16:55,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:16:55,606 INFO L85 PathProgramCache]: Analyzing trace with hash -2115908159, now seen corresponding path program 1 times [2024-10-11 21:16:55,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:16:55,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036443393] [2024-10-11 21:16:55,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:16:55,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:16:55,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:16:55,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1251591600] [2024-10-11 21:16:55,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:16:55,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:16:55,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:16:55,647 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:16:55,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 21:16:55,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:16:55,755 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-10-11 21:16:55,757 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:16:55,764 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 [2024-10-11 21:16:55,891 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 21:16:55,891 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 [2024-10-11 21:16:55,920 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 21:16:55,920 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 21:16:55,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:16:55,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036443393] [2024-10-11 21:16:55,921 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:16:55,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251591600] [2024-10-11 21:16:55,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1251591600] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:16:55,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:16:55,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 21:16:55,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002637214] [2024-10-11 21:16:55,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:16:55,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-11 21:16:55,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:16:55,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-11 21:16:55,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-10-11 21:16:55,925 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) [2024-10-11 21:16:56,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:16:56,311 INFO L93 Difference]: Finished difference Result 172 states and 181 transitions. [2024-10-11 21:16:56,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 21:16:56,312 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 [2024-10-11 21:16:56,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:16:56,312 INFO L225 Difference]: With dead ends: 172 [2024-10-11 21:16:56,313 INFO L226 Difference]: Without dead ends: 171 [2024-10-11 21:16:56,313 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 [2024-10-11 21:16:56,313 INFO L432 NwaCegarLoop]: 158 mSDtfsCounter, 158 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 21:16:56,314 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 965 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 21:16:56,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-10-11 21:16:56,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2024-10-11 21:16:56,322 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) [2024-10-11 21:16:56,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 180 transitions. [2024-10-11 21:16:56,323 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 180 transitions. Word has length 17 [2024-10-11 21:16:56,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:16:56,323 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 180 transitions. [2024-10-11 21:16:56,323 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) [2024-10-11 21:16:56,323 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 180 transitions. [2024-10-11 21:16:56,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-11 21:16:56,324 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:16:56,324 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] [2024-10-11 21:16:56,339 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 21:16:56,528 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:16:56,529 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)] === [2024-10-11 21:16:56,529 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:16:56,529 INFO L85 PathProgramCache]: Analyzing trace with hash 397010718, now seen corresponding path program 1 times [2024-10-11 21:16:56,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:16:56,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337306193] [2024-10-11 21:16:56,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:16:56,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:16:56,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 21:16:56,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [840086492] [2024-10-11 21:16:56,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:16:56,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:16:56,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:16:56,585 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:16:56,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 21:16:56,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:16:56,722 INFO L255 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-11 21:16:56,724 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:16:56,728 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 [2024-10-11 21:16:56,746 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-11 21:16:56,746 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 21:16:56,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:16:56,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337306193] [2024-10-11 21:16:56,747 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 21:16:56,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840086492] [2024-10-11 21:16:56,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840086492] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 21:16:56,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 21:16:56,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 21:16:56,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183648362] [2024-10-11 21:16:56,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 21:16:56,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 21:16:56,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:16:56,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 21:16:56,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 21:16:56,748 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) [2024-10-11 21:16:56,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:16:56,897 INFO L93 Difference]: Finished difference Result 282 states and 297 transitions. [2024-10-11 21:16:56,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 21:16:56,897 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 [2024-10-11 21:16:56,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:16:56,900 INFO L225 Difference]: With dead ends: 282 [2024-10-11 21:16:56,900 INFO L226 Difference]: Without dead ends: 280 [2024-10-11 21:16:56,900 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 [2024-10-11 21:16:56,901 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 [2024-10-11 21:16:56,901 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] [2024-10-11 21:16:56,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2024-10-11 21:16:56,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 220. [2024-10-11 21:16:56,910 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) [2024-10-11 21:16:56,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 268 transitions. [2024-10-11 21:16:56,911 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 268 transitions. Word has length 37 [2024-10-11 21:16:56,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:16:56,912 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 268 transitions. [2024-10-11 21:16:56,912 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) [2024-10-11 21:16:56,912 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 268 transitions. [2024-10-11 21:16:56,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-11 21:16:56,912 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:16:56,912 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] [2024-10-11 21:16:56,925 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-11 21:16:57,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:16:57,120 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)] === [2024-10-11 21:16:57,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:16:57,121 INFO L85 PathProgramCache]: Analyzing trace with hash 391088007, now seen corresponding path program 1 times [2024-10-11 21:16:57,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:16:57,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139106405] [2024-10-11 21:16:57,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:16:57,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:16:57,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:16:57,433 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-11 21:16:57,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:16:57,435 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-11 21:16:57,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:16:57,473 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-11 21:16:57,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:16:57,480 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-11 21:16:57,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:16:57,508 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-11 21:16:57,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:16:57,583 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-11 21:16:57,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 21:16:57,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139106405] [2024-10-11 21:16:57,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139106405] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 21:16:57,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82499040] [2024-10-11 21:16:57,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:16:57,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 21:16:57,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 21:16:57,585 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 21:16:57,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 21:16:57,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 21:16:57,702 INFO L255 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-11 21:16:57,704 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 21:16:57,735 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 [2024-10-11 21:16:57,738 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 [2024-10-11 21:16:57,889 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-11 21:16:57,889 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 21:16:58,172 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-11 21:16:58,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82499040] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 21:16:58,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 21:16:58,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 11] total 25 [2024-10-11 21:16:58,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949829042] [2024-10-11 21:16:58,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 21:16:58,178 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-11 21:16:58,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 21:16:58,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-11 21:16:58,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2024-10-11 21:16:58,179 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) [2024-10-11 21:17:02,247 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] [2024-10-11 21:17:07,628 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 21:17:11,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 21:17:16,227 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 21:17:20,232 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 21:17:24,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-11 21:17:24,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 21:17:24,299 INFO L93 Difference]: Finished difference Result 415 states and 506 transitions. [2024-10-11 21:17:24,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-11 21:17:24,300 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 [2024-10-11 21:17:24,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 21:17:24,306 INFO L225 Difference]: With dead ends: 415 [2024-10-11 21:17:24,306 INFO L226 Difference]: Without dead ends: 382 [2024-10-11 21:17:24,307 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 63 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=235, Invalid=1405, Unknown=0, NotChecked=0, Total=1640 [2024-10-11 21:17:24,307 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 532 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 1296 mSolverCounterSat, 80 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 1389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1296 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.7s IncrementalHoareTripleChecker+Time [2024-10-11 21:17:24,307 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [541 Valid, 562 Invalid, 1389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1296 Invalid, 13 Unknown, 0 Unchecked, 25.7s Time] [2024-10-11 21:17:24,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2024-10-11 21:17:24,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 341. [2024-10-11 21:17:24,342 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) [2024-10-11 21:17:24,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 472 transitions. [2024-10-11 21:17:24,346 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 472 transitions. Word has length 37 [2024-10-11 21:17:24,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 21:17:24,347 INFO L471 AbstractCegarLoop]: Abstraction has 341 states and 472 transitions. [2024-10-11 21:17:24,347 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) [2024-10-11 21:17:24,347 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 472 transitions. [2024-10-11 21:17:24,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-11 21:17:24,348 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 21:17:24,349 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] [2024-10-11 21:17:24,362 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-10-11 21:17:24,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-10-11 21:17:24,550 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)] === [2024-10-11 21:17:24,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 21:17:24,551 INFO L85 PathProgramCache]: Analyzing trace with hash -724786912, now seen corresponding path program 1 times [2024-10-11 21:17:24,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 21:17:24,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038197920] [2024-10-11 21:17:24,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 21:17:24,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 21:17:24,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat