./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 4a390ef5 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd2-ll.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 020f2d3a270ed8dfae4a7c8fa8db16a8ad645d088f685c7c500cf3124112cf45 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4a390ef-m [2024-10-24 20:43:31,100 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-24 20:43:31,177 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2024-10-24 20:43:31,182 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-24 20:43:31,184 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-24 20:43:31,228 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-24 20:43:31,228 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-24 20:43:31,229 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-24 20:43:31,230 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-24 20:43:31,230 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-24 20:43:31,231 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-24 20:43:31,231 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-24 20:43:31,232 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-24 20:43:31,234 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-24 20:43:31,234 INFO L153 SettingsManager]: * Use SBE=true [2024-10-24 20:43:31,234 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-24 20:43:31,235 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-24 20:43:31,235 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-24 20:43:31,235 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-24 20:43:31,235 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-24 20:43:31,235 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-24 20:43:31,236 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-24 20:43:31,236 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-24 20:43:31,237 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-24 20:43:31,237 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-24 20:43:31,237 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2024-10-24 20:43:31,238 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-24 20:43:31,238 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-24 20:43:31,238 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-24 20:43:31,238 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-24 20:43:31,239 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-24 20:43:31,239 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-24 20:43:31,239 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-24 20:43:31,240 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-24 20:43:31,240 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 20:43:31,240 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-24 20:43:31,241 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-24 20:43:31,241 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-24 20:43:31,241 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-24 20:43:31,241 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-24 20:43:31,242 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-24 20:43:31,243 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-24 20:43:31,243 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-24 20:43:31,244 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-24 20:43:31,244 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 020f2d3a270ed8dfae4a7c8fa8db16a8ad645d088f685c7c500cf3124112cf45 [2024-10-24 20:43:31,495 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-24 20:43:31,521 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-24 20:43:31,525 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-24 20:43:31,526 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-24 20:43:31,527 INFO L274 PluginConnector]: CDTParser initialized [2024-10-24 20:43:31,528 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd2-ll.c [2024-10-24 20:43:32,931 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-24 20:43:33,151 INFO L384 CDTParser]: Found 1 translation units. [2024-10-24 20:43:33,152 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd2-ll.c [2024-10-24 20:43:33,162 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27e962a5f/1a14da59f064472e87478e0d08711545/FLAG96d1a9d07 [2024-10-24 20:43:33,174 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/27e962a5f/1a14da59f064472e87478e0d08711545 [2024-10-24 20:43:33,176 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-24 20:43:33,177 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-24 20:43:33,179 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-24 20:43:33,179 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-24 20:43:33,184 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-24 20:43:33,184 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 08:43:33" (1/1) ... [2024-10-24 20:43:33,185 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fb1099a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:43:33, skipping insertion in model container [2024-10-24 20:43:33,185 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 08:43:33" (1/1) ... [2024-10-24 20:43:33,213 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-24 20:43:33,458 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 20:43:33,475 INFO L200 MainTranslator]: Completed pre-run [2024-10-24 20:43:33,518 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-24 20:43:33,541 INFO L204 MainTranslator]: Completed translation [2024-10-24 20:43:33,542 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:43:33 WrapperNode [2024-10-24 20:43:33,542 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-24 20:43:33,544 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-24 20:43:33,544 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-24 20:43:33,544 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-24 20:43:33,551 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:43:33" (1/1) ... [2024-10-24 20:43:33,561 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:43:33" (1/1) ... [2024-10-24 20:43:33,592 INFO L138 Inliner]: procedures = 17, calls = 142, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 159 [2024-10-24 20:43:33,593 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-24 20:43:33,593 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-24 20:43:33,593 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-24 20:43:33,594 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-24 20:43:33,604 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:43:33" (1/1) ... [2024-10-24 20:43:33,604 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:43:33" (1/1) ... [2024-10-24 20:43:33,608 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:43:33" (1/1) ... [2024-10-24 20:43:33,637 INFO L175 MemorySlicer]: Split 86 memory accesses to 13 slices as follows [2, 10, 7, 7, 5, 8, 5, 3, 8, 3, 9, 12, 7]. 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, 2, 3, 3, 2, 2, 2, 1, 2, 1, 1, 1, 2]. [2024-10-24 20:43:33,638 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:43:33" (1/1) ... [2024-10-24 20:43:33,638 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:43:33" (1/1) ... [2024-10-24 20:43:33,648 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:43:33" (1/1) ... [2024-10-24 20:43:33,650 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:43:33" (1/1) ... [2024-10-24 20:43:33,652 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:43:33" (1/1) ... [2024-10-24 20:43:33,655 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:43:33" (1/1) ... [2024-10-24 20:43:33,659 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-24 20:43:33,664 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-24 20:43:33,664 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-24 20:43:33,665 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-24 20:43:33,665 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:43:33" (1/1) ... [2024-10-24 20:43:33,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-24 20:43:33,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 20:43:33,706 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-24 20:43:33,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-24 20:43:33,752 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-24 20:43:33,752 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-10-24 20:43:33,752 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-10-24 20:43:33,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-24 20:43:33,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-24 20:43:33,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-24 20:43:33,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-10-24 20:43:33,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-10-24 20:43:33,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-10-24 20:43:33,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-10-24 20:43:33,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-10-24 20:43:33,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-10-24 20:43:33,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-10-24 20:43:33,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-10-24 20:43:33,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-10-24 20:43:33,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-10-24 20:43:33,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-10-24 20:43:33,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-24 20:43:33,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-24 20:43:33,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-24 20:43:33,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-10-24 20:43:33,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-10-24 20:43:33,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-10-24 20:43:33,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-10-24 20:43:33,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2024-10-24 20:43:33,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2024-10-24 20:43:33,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2024-10-24 20:43:33,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2024-10-24 20:43:33,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2024-10-24 20:43:33,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2024-10-24 20:43:33,757 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_45_to_53_0 [2024-10-24 20:43:33,757 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_45_to_53_0 [2024-10-24 20:43:33,757 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_39_to_65_0 [2024-10-24 20:43:33,758 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_39_to_65_0 [2024-10-24 20:43:33,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-24 20:43:33,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-24 20:43:33,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-24 20:43:33,761 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-24 20:43:33,761 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-24 20:43:33,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-10-24 20:43:33,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-10-24 20:43:33,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-10-24 20:43:33,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-10-24 20:43:33,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2024-10-24 20:43:33,763 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2024-10-24 20:43:33,763 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2024-10-24 20:43:33,763 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2024-10-24 20:43:33,763 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2024-10-24 20:43:33,763 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2024-10-24 20:43:33,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-10-24 20:43:33,764 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-10-24 20:43:33,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-24 20:43:33,916 INFO L238 CfgBuilder]: Building ICFG [2024-10-24 20:43:33,918 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-24 20:43:34,924 INFO L? ?]: Removed 217 outVars from TransFormulas that were not future-live. [2024-10-24 20:43:34,924 INFO L287 CfgBuilder]: Performing block encoding [2024-10-24 20:43:35,020 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-24 20:43:35,021 INFO L314 CfgBuilder]: Removed 2 assume(true) statements. [2024-10-24 20:43:35,021 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 08:43:35 BoogieIcfgContainer [2024-10-24 20:43:35,022 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-24 20:43:35,025 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-24 20:43:35,025 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-24 20:43:35,029 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-24 20:43:35,029 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 08:43:33" (1/3) ... [2024-10-24 20:43:35,030 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@294844c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 08:43:35, skipping insertion in model container [2024-10-24 20:43:35,031 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 08:43:33" (2/3) ... [2024-10-24 20:43:35,031 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@294844c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 08:43:35, skipping insertion in model container [2024-10-24 20:43:35,032 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 08:43:35" (3/3) ... [2024-10-24 20:43:35,033 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_egcd2-ll.c [2024-10-24 20:43:35,048 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-24 20:43:35,048 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 64 error locations. [2024-10-24 20:43:35,104 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-24 20:43:35,109 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;@15fc0b6d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-24 20:43:35,110 INFO L334 AbstractCegarLoop]: Starting to check reachability of 64 error locations. [2024-10-24 20:43:35,114 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) [2024-10-24 20:43:35,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-24 20:43:35,120 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:43:35,121 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 20:43:35,122 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)] === [2024-10-24 20:43:35,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:43:35,126 INFO L85 PathProgramCache]: Analyzing trace with hash -235006959, now seen corresponding path program 1 times [2024-10-24 20:43:35,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:43:35,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406817285] [2024-10-24 20:43:35,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:43:35,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:43:35,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:35,404 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 20:43:35,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:35,413 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 20:43:35,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:35,425 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-24 20:43:35,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:43:35,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406817285] [2024-10-24 20:43:35,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406817285] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 20:43:35,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 20:43:35,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-24 20:43:35,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830887711] [2024-10-24 20:43:35,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 20:43:35,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-24 20:43:35,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:43:35,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-24 20:43:35,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-24 20:43:35,466 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) [2024-10-24 20:43:35,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:43:35,526 INFO L93 Difference]: Finished difference Result 346 states and 389 transitions. [2024-10-24 20:43:35,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-24 20:43:35,529 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 [2024-10-24 20:43:35,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:43:35,537 INFO L225 Difference]: With dead ends: 346 [2024-10-24 20:43:35,537 INFO L226 Difference]: Without dead ends: 171 [2024-10-24 20:43:35,541 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 [2024-10-24 20:43:35,545 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 [2024-10-24 20:43:35,546 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] [2024-10-24 20:43:35,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-10-24 20:43:35,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2024-10-24 20:43:35,595 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) [2024-10-24 20:43:35,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 181 transitions. [2024-10-24 20:43:35,600 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 181 transitions. Word has length 14 [2024-10-24 20:43:35,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:43:35,601 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 181 transitions. [2024-10-24 20:43:35,601 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) [2024-10-24 20:43:35,602 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 181 transitions. [2024-10-24 20:43:35,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-10-24 20:43:35,604 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:43:35,604 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 20:43:35,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-24 20:43:35,605 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)] === [2024-10-24 20:43:35,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:43:35,605 INFO L85 PathProgramCache]: Analyzing trace with hash 467904661, now seen corresponding path program 1 times [2024-10-24 20:43:35,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:43:35,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974820509] [2024-10-24 20:43:35,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:43:35,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:43:35,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 20:43:35,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [762324178] [2024-10-24 20:43:35,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:43:35,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:43:35,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 20:43:35,716 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 20:43:35,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-24 20:43:35,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:35,882 INFO L255 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-24 20:43:35,887 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 20:43:36,181 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 [2024-10-24 20:43:36,203 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 20:43:36,203 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 [2024-10-24 20:43:36,241 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 20:43:36,241 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 20:43:36,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:43:36,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974820509] [2024-10-24 20:43:36,242 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 20:43:36,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762324178] [2024-10-24 20:43:36,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762324178] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 20:43:36,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 20:43:36,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-24 20:43:36,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58485054] [2024-10-24 20:43:36,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 20:43:36,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-10-24 20:43:36,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:43:36,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-10-24 20:43:36,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-10-24 20:43:36,248 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) [2024-10-24 20:43:40,289 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] [2024-10-24 20:43:40,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:43:40,627 INFO L93 Difference]: Finished difference Result 175 states and 184 transitions. [2024-10-24 20:43:40,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-24 20:43:40,628 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 [2024-10-24 20:43:40,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:43:40,630 INFO L225 Difference]: With dead ends: 175 [2024-10-24 20:43:40,630 INFO L226 Difference]: Without dead ends: 174 [2024-10-24 20:43:40,631 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2024-10-24 20:43:40,632 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 [2024-10-24 20:43:40,632 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] [2024-10-24 20:43:40,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-10-24 20:43:40,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2024-10-24 20:43:40,652 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) [2024-10-24 20:43:40,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 183 transitions. [2024-10-24 20:43:40,657 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 183 transitions. Word has length 14 [2024-10-24 20:43:40,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:43:40,658 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 183 transitions. [2024-10-24 20:43:40,658 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) [2024-10-24 20:43:40,658 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 183 transitions. [2024-10-24 20:43:40,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-10-24 20:43:40,658 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:43:40,658 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 20:43:40,678 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-24 20:43:40,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:43:40,860 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)] === [2024-10-24 20:43:40,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:43:40,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1620142783, now seen corresponding path program 1 times [2024-10-24 20:43:40,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:43:40,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141528020] [2024-10-24 20:43:40,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:43:40,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:43:40,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 20:43:40,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [491038272] [2024-10-24 20:43:40,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:43:40,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:43:40,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 20:43:40,956 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 20:43:40,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-24 20:43:41,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:41,103 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-24 20:43:41,105 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 20:43:41,124 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 [2024-10-24 20:43:41,136 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 [2024-10-24 20:43:41,684 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 20:43:41,685 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 [2024-10-24 20:43:41,725 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 20:43:41,726 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 [2024-10-24 20:43:41,771 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 20:43:41,771 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 20:43:41,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:43:41,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141528020] [2024-10-24 20:43:41,772 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 20:43:41,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [491038272] [2024-10-24 20:43:41,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [491038272] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 20:43:41,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 20:43:41,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-10-24 20:43:41,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033492229] [2024-10-24 20:43:41,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 20:43:41,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-10-24 20:43:41,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:43:41,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-10-24 20:43:41,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-10-24 20:43:41,774 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) [2024-10-24 20:43:45,831 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] [2024-10-24 20:43:46,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:43:46,404 INFO L93 Difference]: Finished difference Result 174 states and 183 transitions. [2024-10-24 20:43:46,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-10-24 20:43:46,405 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 [2024-10-24 20:43:46,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:43:46,406 INFO L225 Difference]: With dead ends: 174 [2024-10-24 20:43:46,406 INFO L226 Difference]: Without dead ends: 173 [2024-10-24 20:43:46,407 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2024-10-24 20:43:46,408 INFO L432 NwaCegarLoop]: 158 mSDtfsCounter, 162 mSDsluCounter, 828 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s 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, 4.5s IncrementalHoareTripleChecker+Time [2024-10-24 20:43:46,408 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 986 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 256 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2024-10-24 20:43:46,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-10-24 20:43:46,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2024-10-24 20:43:46,420 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) [2024-10-24 20:43:46,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 182 transitions. [2024-10-24 20:43:46,422 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 182 transitions. Word has length 15 [2024-10-24 20:43:46,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:43:46,422 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 182 transitions. [2024-10-24 20:43:46,422 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) [2024-10-24 20:43:46,423 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 182 transitions. [2024-10-24 20:43:46,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-10-24 20:43:46,423 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:43:46,423 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 20:43:46,441 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-24 20:43:46,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-10-24 20:43:46,628 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)] === [2024-10-24 20:43:46,628 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:43:46,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1315181097, now seen corresponding path program 1 times [2024-10-24 20:43:46,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:43:46,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617103842] [2024-10-24 20:43:46,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:43:46,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:43:46,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 20:43:46,687 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [182162159] [2024-10-24 20:43:46,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:43:46,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:43:46,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 20:43:46,690 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 20:43:46,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-24 20:43:46,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:46,825 INFO L255 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-10-24 20:43:46,827 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 20:43:46,864 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 [2024-10-24 20:43:46,877 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-24 20:43:46,877 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 20:43:46,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:43:46,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617103842] [2024-10-24 20:43:46,878 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 20:43:46,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [182162159] [2024-10-24 20:43:46,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [182162159] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 20:43:46,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 20:43:46,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-24 20:43:46,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445939542] [2024-10-24 20:43:46,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 20:43:46,879 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-24 20:43:46,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:43:46,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-24 20:43:46,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-24 20:43:46,880 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) [2024-10-24 20:43:47,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:43:47,062 INFO L93 Difference]: Finished difference Result 173 states and 182 transitions. [2024-10-24 20:43:47,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-24 20:43:47,063 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 [2024-10-24 20:43:47,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:43:47,065 INFO L225 Difference]: With dead ends: 173 [2024-10-24 20:43:47,065 INFO L226 Difference]: Without dead ends: 172 [2024-10-24 20:43:47,065 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 [2024-10-24 20:43:47,066 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 [2024-10-24 20:43:47,066 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] [2024-10-24 20:43:47,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-10-24 20:43:47,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2024-10-24 20:43:47,084 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) [2024-10-24 20:43:47,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 181 transitions. [2024-10-24 20:43:47,085 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 181 transitions. Word has length 16 [2024-10-24 20:43:47,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:43:47,088 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 181 transitions. [2024-10-24 20:43:47,088 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) [2024-10-24 20:43:47,089 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 181 transitions. [2024-10-24 20:43:47,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-24 20:43:47,089 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:43:47,089 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-24 20:43:47,108 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-24 20:43:47,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:43:47,290 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)] === [2024-10-24 20:43:47,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:43:47,291 INFO L85 PathProgramCache]: Analyzing trace with hash -2115908159, now seen corresponding path program 1 times [2024-10-24 20:43:47,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:43:47,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439059608] [2024-10-24 20:43:47,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:43:47,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:43:47,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 20:43:47,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [608964096] [2024-10-24 20:43:47,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:43:47,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:43:47,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 20:43:47,346 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 20:43:47,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-24 20:43:47,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:47,500 INFO L255 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-24 20:43:47,502 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 20:43:47,514 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 [2024-10-24 20:43:47,799 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 20:43:47,800 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 [2024-10-24 20:43:47,887 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-24 20:43:47,887 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 52 treesize of output 60 [2024-10-24 20:43:47,964 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-24 20:43:47,964 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 20:43:47,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:43:47,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439059608] [2024-10-24 20:43:47,965 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 20:43:47,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608964096] [2024-10-24 20:43:47,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608964096] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 20:43:47,965 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 20:43:47,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-10-24 20:43:47,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189907422] [2024-10-24 20:43:47,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 20:43:47,966 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-24 20:43:47,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:43:47,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-24 20:43:47,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-10-24 20:43:47,967 INFO L87 Difference]: Start difference. First operand 172 states and 181 transitions. Second operand has 14 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 9 states have internal predecessors, (13), 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) [2024-10-24 20:43:52,016 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] [2024-10-24 20:43:52,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:43:52,639 INFO L93 Difference]: Finished difference Result 172 states and 181 transitions. [2024-10-24 20:43:52,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-24 20:43:52,640 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 9 states have internal predecessors, (13), 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 17 [2024-10-24 20:43:52,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:43:52,641 INFO L225 Difference]: With dead ends: 172 [2024-10-24 20:43:52,641 INFO L226 Difference]: Without dead ends: 171 [2024-10-24 20:43:52,642 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2024-10-24 20:43:52,642 INFO L432 NwaCegarLoop]: 154 mSDtfsCounter, 180 mSDsluCounter, 1071 mSDsCounter, 0 mSdLazyCounter, 354 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 1225 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 354 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-10-24 20:43:52,643 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 1225 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 354 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2024-10-24 20:43:52,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2024-10-24 20:43:52,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2024-10-24 20:43:52,656 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) [2024-10-24 20:43:52,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 180 transitions. [2024-10-24 20:43:52,657 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 180 transitions. Word has length 17 [2024-10-24 20:43:52,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:43:52,658 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 180 transitions. [2024-10-24 20:43:52,658 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 9 states have internal predecessors, (13), 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) [2024-10-24 20:43:52,658 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 180 transitions. [2024-10-24 20:43:52,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-24 20:43:52,659 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:43:52,659 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] [2024-10-24 20:43:52,678 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-10-24 20:43:52,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:43:52,860 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)] === [2024-10-24 20:43:52,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:43:52,860 INFO L85 PathProgramCache]: Analyzing trace with hash 397010718, now seen corresponding path program 1 times [2024-10-24 20:43:52,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:43:52,861 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374601867] [2024-10-24 20:43:52,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:43:52,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:43:52,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-24 20:43:52,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [125547360] [2024-10-24 20:43:52,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:43:52,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:43:52,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 20:43:52,915 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 20:43:52,916 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-24 20:43:53,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:53,107 INFO L255 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-10-24 20:43:53,110 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 20:43:53,126 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 [2024-10-24 20:43:53,155 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-10-24 20:43:53,155 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-24 20:43:53,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:43:53,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374601867] [2024-10-24 20:43:53,156 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-24 20:43:53,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125547360] [2024-10-24 20:43:53,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125547360] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-24 20:43:53,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-24 20:43:53,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-24 20:43:53,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147439087] [2024-10-24 20:43:53,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-24 20:43:53,158 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-24 20:43:53,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:43:53,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-24 20:43:53,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-24 20:43:53,159 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) [2024-10-24 20:43:53,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:43:53,386 INFO L93 Difference]: Finished difference Result 282 states and 297 transitions. [2024-10-24 20:43:53,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-24 20:43:53,387 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 [2024-10-24 20:43:53,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:43:53,390 INFO L225 Difference]: With dead ends: 282 [2024-10-24 20:43:53,390 INFO L226 Difference]: Without dead ends: 280 [2024-10-24 20:43:53,394 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 [2024-10-24 20:43:53,394 INFO L432 NwaCegarLoop]: 163 mSDtfsCounter, 192 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.2s IncrementalHoareTripleChecker+Time [2024-10-24 20:43:53,396 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 793 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-24 20:43:53,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2024-10-24 20:43:53,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 220. [2024-10-24 20:43:53,411 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) [2024-10-24 20:43:53,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 268 transitions. [2024-10-24 20:43:53,413 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 268 transitions. Word has length 37 [2024-10-24 20:43:53,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:43:53,414 INFO L471 AbstractCegarLoop]: Abstraction has 220 states and 268 transitions. [2024-10-24 20:43:53,414 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) [2024-10-24 20:43:53,414 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 268 transitions. [2024-10-24 20:43:53,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-24 20:43:53,415 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:43:53,415 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] [2024-10-24 20:43:53,434 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-24 20:43:53,619 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:43:53,620 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)] === [2024-10-24 20:43:53,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:43:53,620 INFO L85 PathProgramCache]: Analyzing trace with hash 391088007, now seen corresponding path program 1 times [2024-10-24 20:43:53,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:43:53,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205056465] [2024-10-24 20:43:53,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:43:53,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:43:53,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:54,021 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-10-24 20:43:54,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:54,024 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-10-24 20:43:54,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:54,053 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-10-24 20:43:54,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:54,057 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-10-24 20:43:54,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:54,082 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-10-24 20:43:54,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:54,176 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-24 20:43:54,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-24 20:43:54,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205056465] [2024-10-24 20:43:54,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205056465] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-24 20:43:54,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816020635] [2024-10-24 20:43:54,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:43:54,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:43:54,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-24 20:43:54,180 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-24 20:43:54,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-24 20:43:54,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-24 20:43:54,342 INFO L255 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-24 20:43:54,345 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-24 20:43:54,409 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 [2024-10-24 20:43:54,413 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 [2024-10-24 20:43:54,613 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-10-24 20:43:54,613 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-24 20:43:54,945 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-10-24 20:43:54,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816020635] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-24 20:43:54,945 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-24 20:43:54,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 11] total 25 [2024-10-24 20:43:54,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549163572] [2024-10-24 20:43:54,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-24 20:43:54,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-24 20:43:54,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-24 20:43:54,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-24 20:43:54,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2024-10-24 20:43:54,948 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) [2024-10-24 20:43:59,002 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 20:44:04,828 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 20:44:09,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 20:44:13,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 20:44:17,424 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 20:44:21,434 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-10-24 20:44:21,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-24 20:44:21,487 INFO L93 Difference]: Finished difference Result 415 states and 506 transitions. [2024-10-24 20:44:21,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-10-24 20:44:21,488 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 [2024-10-24 20:44:21,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-24 20:44:21,490 INFO L225 Difference]: With dead ends: 415 [2024-10-24 20:44:21,490 INFO L226 Difference]: Without dead ends: 382 [2024-10-24 20:44:21,491 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 63 SyntacticMatches, 5 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=235, Invalid=1405, Unknown=0, NotChecked=0, Total=1640 [2024-10-24 20:44:21,491 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 720 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 1770 mSolverCounterSat, 109 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 1886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1770 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.0s IncrementalHoareTripleChecker+Time [2024-10-24 20:44:21,492 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [729 Valid, 666 Invalid, 1886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1770 Invalid, 7 Unknown, 0 Unchecked, 26.0s Time] [2024-10-24 20:44:21,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2024-10-24 20:44:21,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 341. [2024-10-24 20:44:21,515 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) [2024-10-24 20:44:21,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 472 transitions. [2024-10-24 20:44:21,518 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 472 transitions. Word has length 37 [2024-10-24 20:44:21,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-24 20:44:21,518 INFO L471 AbstractCegarLoop]: Abstraction has 341 states and 472 transitions. [2024-10-24 20:44:21,518 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) [2024-10-24 20:44:21,519 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 472 transitions. [2024-10-24 20:44:21,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-24 20:44:21,519 INFO L207 NwaCegarLoop]: Found error trace [2024-10-24 20:44:21,520 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] [2024-10-24 20:44:21,533 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-24 20:44:21,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-24 20:44:21,723 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)] === [2024-10-24 20:44:21,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-24 20:44:21,723 INFO L85 PathProgramCache]: Analyzing trace with hash -724786912, now seen corresponding path program 1 times [2024-10-24 20:44:21,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-24 20:44:21,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490306941] [2024-10-24 20:44:21,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-24 20:44:21,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-24 20:44:21,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat