./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/recursified_nla-digbench/recursified_egcd2-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/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_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../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 0.3.0-?-798a7b3-m [2025-03-04 11:31:53,387 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 11:31:53,438 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2025-03-04 11:31:53,443 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 11:31:53,444 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 11:31:53,463 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 11:31:53,463 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 11:31:53,463 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 11:31:53,464 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 11:31:53,464 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 11:31:53,465 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 11:31:53,465 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 11:31:53,465 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 11:31:53,465 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 11:31:53,465 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 11:31:53,465 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 11:31:53,465 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 11:31:53,466 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 11:31:53,466 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 11:31:53,466 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 11:31:53,466 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 11:31:53,466 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 11:31:53,466 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 11:31:53,466 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 11:31:53,466 INFO L153 SettingsManager]: * Check absence of signed integer overflows=ASSERTandASSUME [2025-03-04 11:31:53,466 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2025-03-04 11:31:53,466 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 11:31:53,466 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 11:31:53,466 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 11:31:53,466 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 11:31:53,467 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 11:31:53,467 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 11:31:53,467 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 11:31:53,467 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 11:31:53,467 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 11:31:53,467 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 11:31:53,468 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 11:31:53,468 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 11:31:53,468 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 11:31:53,468 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 11:31:53,468 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 11:31:53,468 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 11:31:53,468 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 11:31:53,468 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 11:31:53,468 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 11:31:53,468 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 [2025-03-04 11:31:53,656 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 11:31:53,661 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 11:31:53,662 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 11:31:53,663 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 11:31:53,663 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 11:31:53,664 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursified_nla-digbench/recursified_egcd2-ll.c [2025-03-04 11:31:54,820 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9c2b7eee/6a582aec30d84bde9b08f975a5ff838b/FLAGe409e2c43 [2025-03-04 11:31:55,032 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 11:31:55,033 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_nla-digbench/recursified_egcd2-ll.c [2025-03-04 11:31:55,041 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9c2b7eee/6a582aec30d84bde9b08f975a5ff838b/FLAGe409e2c43 [2025-03-04 11:31:55,375 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9c2b7eee/6a582aec30d84bde9b08f975a5ff838b [2025-03-04 11:31:55,377 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 11:31:55,378 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 11:31:55,379 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 11:31:55,379 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 11:31:55,381 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 11:31:55,382 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 11:31:55" (1/1) ... [2025-03-04 11:31:55,382 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24bf26ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:31:55, skipping insertion in model container [2025-03-04 11:31:55,382 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 11:31:55" (1/1) ... [2025-03-04 11:31:55,396 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 11:31:55,524 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 11:31:55,533 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 11:31:55,563 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 11:31:55,571 INFO L204 MainTranslator]: Completed translation [2025-03-04 11:31:55,572 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:31:55 WrapperNode [2025-03-04 11:31:55,572 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 11:31:55,573 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 11:31:55,573 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 11:31:55,573 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 11:31:55,579 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:31:55" (1/1) ... [2025-03-04 11:31:55,587 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:31:55" (1/1) ... [2025-03-04 11:31:55,604 INFO L138 Inliner]: procedures = 17, calls = 142, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 159 [2025-03-04 11:31:55,605 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 11:31:55,605 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 11:31:55,605 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 11:31:55,605 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 11:31:55,611 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:31:55" (1/1) ... [2025-03-04 11:31:55,612 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:31:55" (1/1) ... [2025-03-04 11:31:55,615 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:31:55" (1/1) ... [2025-03-04 11:31:55,628 INFO L175 MemorySlicer]: Split 86 memory accesses to 13 slices as follows [2, 7, 10, 7, 7, 3, 3, 8, 5, 8, 5, 12, 9]. 14 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. The 22 writes are split as follows [0, 3, 2, 2, 3, 1, 1, 2, 2, 2, 2, 1, 1]. [2025-03-04 11:31:55,629 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:31:55" (1/1) ... [2025-03-04 11:31:55,629 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:31:55" (1/1) ... [2025-03-04 11:31:55,640 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:31:55" (1/1) ... [2025-03-04 11:31:55,641 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:31:55" (1/1) ... [2025-03-04 11:31:55,643 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:31:55" (1/1) ... [2025-03-04 11:31:55,644 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:31:55" (1/1) ... [2025-03-04 11:31:55,646 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 11:31:55,647 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 11:31:55,647 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 11:31:55,647 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 11:31:55,647 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:31:55" (1/1) ... [2025-03-04 11:31:55,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 11:31:55,661 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:31:55,673 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) [2025-03-04 11:31:55,676 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 [2025-03-04 11:31:55,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 11:31:55,693 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-04 11:31:55,693 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-04 11:31:55,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 11:31:55,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-04 11:31:55,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-04 11:31:55,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-04 11:31:55,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-04 11:31:55,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-03-04 11:31:55,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2025-03-04 11:31:55,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2025-03-04 11:31:55,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2025-03-04 11:31:55,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2025-03-04 11:31:55,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2025-03-04 11:31:55,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2025-03-04 11:31:55,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2025-03-04 11:31:55,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-04 11:31:55,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-04 11:31:55,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-04 11:31:55,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-04 11:31:55,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-04 11:31:55,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-04 11:31:55,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-03-04 11:31:55,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2025-03-04 11:31:55,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#7 [2025-03-04 11:31:55,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#8 [2025-03-04 11:31:55,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#9 [2025-03-04 11:31:55,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#10 [2025-03-04 11:31:55,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#11 [2025-03-04 11:31:55,696 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#12 [2025-03-04 11:31:55,696 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_45_to_53_0 [2025-03-04 11:31:55,696 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_45_to_53_0 [2025-03-04 11:31:55,696 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_39_to_65_0 [2025-03-04 11:31:55,696 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_39_to_65_0 [2025-03-04 11:31:55,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 11:31:55,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 11:31:55,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-04 11:31:55,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-04 11:31:55,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-04 11:31:55,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-04 11:31:55,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-04 11:31:55,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-03-04 11:31:55,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2025-03-04 11:31:55,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#7 [2025-03-04 11:31:55,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#8 [2025-03-04 11:31:55,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#9 [2025-03-04 11:31:55,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#10 [2025-03-04 11:31:55,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#11 [2025-03-04 11:31:55,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#12 [2025-03-04 11:31:55,698 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-04 11:31:55,698 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-04 11:31:55,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-04 11:31:55,814 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 11:31:55,815 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 11:31:56,365 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L138: havoc main_#t~mem67#1;call ULTIMATE.dealloc(main_~#x~0#1.base, main_~#x~0#1.offset);havoc main_~#x~0#1.base, main_~#x~0#1.offset;call ULTIMATE.dealloc(main_~#y~0#1.base, main_~#y~0#1.offset);havoc main_~#y~0#1.base, main_~#y~0#1.offset;call ULTIMATE.dealloc(main_~#a~0#1.base, main_~#a~0#1.offset);havoc main_~#a~0#1.base, main_~#a~0#1.offset;call ULTIMATE.dealloc(main_~#b~0#1.base, main_~#b~0#1.offset);havoc main_~#b~0#1.base, main_~#b~0#1.offset;call ULTIMATE.dealloc(main_~#p~0#1.base, main_~#p~0#1.offset);havoc main_~#p~0#1.base, main_~#p~0#1.offset;call ULTIMATE.dealloc(main_~#q~0#1.base, main_~#q~0#1.offset);havoc main_~#q~0#1.base, main_~#q~0#1.offset;call ULTIMATE.dealloc(main_~#r~0#1.base, main_~#r~0#1.offset);havoc main_~#r~0#1.base, main_~#r~0#1.offset;call ULTIMATE.dealloc(main_~#s~0#1.base, main_~#s~0#1.offset);havoc main_~#s~0#1.base, main_~#s~0#1.offset;call ULTIMATE.dealloc(main_~#c~0#1.base, main_~#c~0#1.offset);havoc main_~#c~0#1.base, main_~#c~0#1.offset;call ULTIMATE.dealloc(main_~#k~0#1.base, main_~#k~0#1.offset);havoc main_~#k~0#1.base, main_~#k~0#1.offset;call ULTIMATE.dealloc(main_~#xy~0#1.base, main_~#xy~0#1.offset);havoc main_~#xy~0#1.base, main_~#xy~0#1.offset;call ULTIMATE.dealloc(main_~#yy~0#1.base, main_~#yy~0#1.offset);havoc main_~#yy~0#1.base, main_~#yy~0#1.offset; [2025-03-04 11:31:56,399 INFO L? ?]: Removed 217 outVars from TransFormulas that were not future-live. [2025-03-04 11:31:56,400 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 11:31:56,410 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 11:31:56,410 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 11:31:56,411 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 11:31:56 BoogieIcfgContainer [2025-03-04 11:31:56,411 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 11:31:56,412 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 11:31:56,412 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 11:31:56,416 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 11:31:56,417 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 11:31:55" (1/3) ... [2025-03-04 11:31:56,418 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51b808cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 11:31:56, skipping insertion in model container [2025-03-04 11:31:56,418 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 11:31:55" (2/3) ... [2025-03-04 11:31:56,418 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51b808cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 11:31:56, skipping insertion in model container [2025-03-04 11:31:56,418 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 11:31:56" (3/3) ... [2025-03-04 11:31:56,419 INFO L128 eAbstractionObserver]: Analyzing ICFG recursified_egcd2-ll.c [2025-03-04 11:31:56,429 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 11:31:56,430 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG recursified_egcd2-ll.c that has 5 procedures, 179 locations, 1 initial locations, 0 loop locations, and 64 error locations. [2025-03-04 11:31:56,467 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 11:31:56,474 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;@6d8a28e6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 11:31:56,475 INFO L334 AbstractCegarLoop]: Starting to check reachability of 64 error locations. [2025-03-04 11:31:56,481 INFO L276 IsEmpty]: Start isEmpty. Operand has 179 states, 96 states have (on average 1.7291666666666667) internal successors, (166), 162 states have internal predecessors, (166), 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) [2025-03-04 11:31:56,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-03-04 11:31:56,484 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:31:56,485 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 11:31:56,485 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr15ASSERT_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)] === [2025-03-04 11:31:56,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:31:56,489 INFO L85 PathProgramCache]: Analyzing trace with hash 916052382, now seen corresponding path program 1 times [2025-03-04 11:31:56,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:31:56,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803525919] [2025-03-04 11:31:56,495 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:31:56,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:31:56,578 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-04 11:31:56,607 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-04 11:31:56,609 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:31:56,610 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:31:56,676 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-04 11:31:56,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:31:56,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803525919] [2025-03-04 11:31:56,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803525919] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:31:56,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150396557] [2025-03-04 11:31:56,677 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:31:56,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:31:56,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:31:56,680 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) [2025-03-04 11:31:56,681 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 11:31:56,755 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-04 11:31:56,785 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-04 11:31:56,785 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:31:56,785 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:31:56,788 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-04 11:31:56,790 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:31:56,796 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-04 11:31:56,797 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 11:31:56,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150396557] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 11:31:56,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 11:31:56,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-04 11:31:56,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296458357] [2025-03-04 11:31:56,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 11:31:56,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-04 11:31:56,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:31:56,815 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-04 11:31:56,815 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-04 11:31:56,817 INFO L87 Difference]: Start difference. First operand has 179 states, 96 states have (on average 1.7291666666666667) internal successors, (166), 162 states have internal predecessors, (166), 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 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 11:31:56,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:31:56,846 INFO L93 Difference]: Finished difference Result 354 states and 397 transitions. [2025-03-04 11:31:56,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-04 11:31:56,847 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (2), 2 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 15 [2025-03-04 11:31:56,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:31:56,851 INFO L225 Difference]: With dead ends: 354 [2025-03-04 11:31:56,851 INFO L226 Difference]: Without dead ends: 172 [2025-03-04 11:31:56,854 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-04 11:31:56,855 INFO L435 NwaCegarLoop]: 189 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 11:31:56,856 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 11:31:56,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2025-03-04 11:31:56,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2025-03-04 11:31:56,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 91 states have (on average 1.7142857142857142) internal successors, (156), 156 states have internal predecessors, (156), 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) [2025-03-04 11:31:56,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 182 transitions. [2025-03-04 11:31:56,893 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 182 transitions. Word has length 15 [2025-03-04 11:31:56,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:31:56,893 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 182 transitions. [2025-03-04 11:31:56,893 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 11:31:56,894 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 182 transitions. [2025-03-04 11:31:56,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-03-04 11:31:56,894 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:31:56,894 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 11:31:56,901 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-04 11:31:57,099 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-04 11:31:57,099 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr15ASSERT_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)] === [2025-03-04 11:31:57,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:31:57,100 INFO L85 PathProgramCache]: Analyzing trace with hash -879975456, now seen corresponding path program 1 times [2025-03-04 11:31:57,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:31:57,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726331318] [2025-03-04 11:31:57,100 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:31:57,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:31:57,119 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-04 11:31:57,184 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-04 11:31:57,184 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:31:57,185 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-04 11:31:57,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1084147925] [2025-03-04 11:31:57,190 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:31:57,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:31:57,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:31:57,192 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) [2025-03-04 11:31:57,193 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-04 11:31:57,267 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-04 11:31:57,305 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-04 11:31:57,305 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:31:57,305 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:31:57,306 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-04 11:31:57,308 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:31:57,505 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 [2025-03-04 11:31:57,520 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 11:31:57,521 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 [2025-03-04 11:31:57,547 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:31:57,547 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 11:31:57,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:31:57,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726331318] [2025-03-04 11:31:57,548 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-04 11:31:57,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084147925] [2025-03-04 11:31:57,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084147925] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 11:31:57,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 11:31:57,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2025-03-04 11:31:57,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211229902] [2025-03-04 11:31:57,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 11:31:57,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-04 11:31:57,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:31:57,550 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-04 11:31:57,550 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2025-03-04 11:31:57,551 INFO L87 Difference]: Start difference. First operand 172 states and 182 transitions. Second operand has 12 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 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) [2025-03-04 11:32:01,568 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] [2025-03-04 11:32:01,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:32:01,874 INFO L93 Difference]: Finished difference Result 176 states and 185 transitions. [2025-03-04 11:32:01,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2025-03-04 11:32:01,874 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 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 [2025-03-04 11:32:01,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:32:01,875 INFO L225 Difference]: With dead ends: 176 [2025-03-04 11:32:01,875 INFO L226 Difference]: Without dead ends: 175 [2025-03-04 11:32:01,876 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2025-03-04 11:32:01,876 INFO L435 NwaCegarLoop]: 166 mSDtfsCounter, 187 mSDsluCounter, 1037 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2025-03-04 11:32:01,876 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 1203 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 228 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2025-03-04 11:32:01,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2025-03-04 11:32:01,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2025-03-04 11:32:01,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 94 states have (on average 1.6808510638297873) internal successors, (158), 158 states have internal predecessors, (158), 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) [2025-03-04 11:32:01,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 184 transitions. [2025-03-04 11:32:01,891 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 184 transitions. Word has length 15 [2025-03-04 11:32:01,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:32:01,891 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 184 transitions. [2025-03-04 11:32:01,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 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) [2025-03-04 11:32:01,891 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 184 transitions. [2025-03-04 11:32:01,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2025-03-04 11:32:01,892 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:32:01,892 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 11:32:01,899 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-04 11:32:02,096 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2025-03-04 11:32:02,096 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr14ASSERT_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)] === [2025-03-04 11:32:02,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:32:02,097 INFO L85 PathProgramCache]: Analyzing trace with hash -1509435221, now seen corresponding path program 1 times [2025-03-04 11:32:02,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:32:02,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495826227] [2025-03-04 11:32:02,097 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:32:02,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:32:02,111 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-04 11:32:02,141 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-04 11:32:02,141 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:32:02,141 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-04 11:32:02,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [633496638] [2025-03-04 11:32:02,143 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:32:02,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:32:02,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:32:02,147 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) [2025-03-04 11:32:02,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-04 11:32:02,222 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 16 statements into 1 equivalence classes. [2025-03-04 11:32:02,249 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 16 of 16 statements. [2025-03-04 11:32:02,249 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:32:02,249 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:32:02,255 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-03-04 11:32:02,258 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:32:02,280 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 [2025-03-04 11:32:02,285 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 [2025-03-04 11:32:02,649 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 11:32:02,650 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 [2025-03-04 11:32:02,691 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 11:32:02,691 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 [2025-03-04 11:32:02,728 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-04 11:32:02,728 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 11:32:02,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:32:02,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495826227] [2025-03-04 11:32:02,728 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-04 11:32:02,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633496638] [2025-03-04 11:32:02,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633496638] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 11:32:02,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 11:32:02,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2025-03-04 11:32:02,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503398764] [2025-03-04 11:32:02,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 11:32:02,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-04 11:32:02,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:32:02,730 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-04 11:32:02,730 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2025-03-04 11:32:02,730 INFO L87 Difference]: Start difference. First operand 175 states and 184 transitions. Second operand has 13 states, 10 states have (on average 1.2) internal successors, (12), 9 states have internal predecessors, (12), 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) [2025-03-04 11:32:06,747 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] [2025-03-04 11:32:07,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:32:07,167 INFO L93 Difference]: Finished difference Result 175 states and 184 transitions. [2025-03-04 11:32:07,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-04 11:32:07,169 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 1.2) internal successors, (12), 9 states have internal predecessors, (12), 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 16 [2025-03-04 11:32:07,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:32:07,170 INFO L225 Difference]: With dead ends: 175 [2025-03-04 11:32:07,170 INFO L226 Difference]: Without dead ends: 174 [2025-03-04 11:32:07,170 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2025-03-04 11:32:07,170 INFO L435 NwaCegarLoop]: 160 mSDtfsCounter, 208 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 870 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2025-03-04 11:32:07,170 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 870 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 219 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2025-03-04 11:32:07,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2025-03-04 11:32:07,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2025-03-04 11:32:07,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 94 states have (on average 1.6702127659574468) 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) [2025-03-04 11:32:07,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 183 transitions. [2025-03-04 11:32:07,189 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 183 transitions. Word has length 16 [2025-03-04 11:32:07,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:32:07,190 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 183 transitions. [2025-03-04 11:32:07,190 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 1.2) internal successors, (12), 9 states have internal predecessors, (12), 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) [2025-03-04 11:32:07,190 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 183 transitions. [2025-03-04 11:32:07,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-03-04 11:32:07,191 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:32:07,193 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 11:32:07,199 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-04 11:32:07,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:32:07,393 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr13ASSERT_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)] === [2025-03-04 11:32:07,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:32:07,394 INFO L85 PathProgramCache]: Analyzing trace with hash 452148542, now seen corresponding path program 1 times [2025-03-04 11:32:07,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:32:07,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35502820] [2025-03-04 11:32:07,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:32:07,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:32:07,406 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-04 11:32:07,435 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-04 11:32:07,436 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:32:07,436 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-04 11:32:07,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2090338421] [2025-03-04 11:32:07,441 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:32:07,441 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:32:07,441 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:32:07,443 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) [2025-03-04 11:32:07,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-04 11:32:07,518 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-03-04 11:32:07,547 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-03-04 11:32:07,547 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:32:07,547 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:32:07,549 INFO L256 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-04 11:32:07,550 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:32:07,586 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 [2025-03-04 11:32:07,598 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 11:32:07,599 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 11:32:07,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:32:07,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35502820] [2025-03-04 11:32:07,599 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-04 11:32:07,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090338421] [2025-03-04 11:32:07,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090338421] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 11:32:07,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 11:32:07,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-03-04 11:32:07,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514098164] [2025-03-04 11:32:07,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 11:32:07,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 11:32:07,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:32:07,600 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 11:32:07,600 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2025-03-04 11:32:07,601 INFO L87 Difference]: Start difference. First operand 174 states and 183 transitions. Second operand has 7 states, 5 states have (on average 2.6) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 11:32:07,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:32:07,712 INFO L93 Difference]: Finished difference Result 174 states and 183 transitions. [2025-03-04 11:32:07,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-04 11:32:07,713 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2025-03-04 11:32:07,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:32:07,714 INFO L225 Difference]: With dead ends: 174 [2025-03-04 11:32:07,715 INFO L226 Difference]: Without dead ends: 173 [2025-03-04 11:32:07,715 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2025-03-04 11:32:07,715 INFO L435 NwaCegarLoop]: 167 mSDtfsCounter, 24 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 11:32:07,716 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 945 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 11:32:07,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2025-03-04 11:32:07,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2025-03-04 11:32:07,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 94 states have (on average 1.6595744680851063) 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) [2025-03-04 11:32:07,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 182 transitions. [2025-03-04 11:32:07,737 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 182 transitions. Word has length 17 [2025-03-04 11:32:07,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:32:07,737 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 182 transitions. [2025-03-04 11:32:07,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 2.6) internal successors, (13), 7 states have internal predecessors, (13), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-03-04 11:32:07,738 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 182 transitions. [2025-03-04 11:32:07,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-03-04 11:32:07,738 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:32:07,738 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 11:32:07,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-04 11:32:07,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:32:07,939 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr12ASSERT_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)] === [2025-03-04 11:32:07,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:32:07,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1131703049, now seen corresponding path program 1 times [2025-03-04 11:32:07,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:32:07,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262043486] [2025-03-04 11:32:07,940 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:32:07,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:32:07,950 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-04 11:32:07,979 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-04 11:32:07,979 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:32:07,980 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-04 11:32:07,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [410369784] [2025-03-04 11:32:07,982 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:32:07,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:32:07,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:32:07,984 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) [2025-03-04 11:32:07,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-04 11:32:08,054 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-04 11:32:08,097 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-04 11:32:08,097 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:32:08,097 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:32:08,101 INFO L256 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-04 11:32:08,102 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:32:08,110 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 [2025-03-04 11:32:08,225 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-04 11:32:08,225 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 28 [2025-03-04 11:32:08,244 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-04 11:32:08,244 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 11:32:08,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:32:08,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262043486] [2025-03-04 11:32:08,245 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-04 11:32:08,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410369784] [2025-03-04 11:32:08,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410369784] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 11:32:08,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 11:32:08,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2025-03-04 11:32:08,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60803228] [2025-03-04 11:32:08,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 11:32:08,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-04 11:32:08,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:32:08,246 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-04 11:32:08,246 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2025-03-04 11:32:08,246 INFO L87 Difference]: Start difference. First operand 173 states and 182 transitions. Second operand has 9 states, 7 states have (on average 2.0) internal successors, (14), 9 states have internal predecessors, (14), 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) [2025-03-04 11:32:08,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:32:08,462 INFO L93 Difference]: Finished difference Result 173 states and 182 transitions. [2025-03-04 11:32:08,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-04 11:32:08,462 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.0) internal successors, (14), 9 states have internal predecessors, (14), 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 18 [2025-03-04 11:32:08,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:32:08,463 INFO L225 Difference]: With dead ends: 173 [2025-03-04 11:32:08,463 INFO L226 Difference]: Without dead ends: 172 [2025-03-04 11:32:08,463 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2025-03-04 11:32:08,464 INFO L435 NwaCegarLoop]: 160 mSDtfsCounter, 204 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-04 11:32:08,464 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 731 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-04 11:32:08,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2025-03-04 11:32:08,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2025-03-04 11:32:08,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 94 states have (on average 1.648936170212766) 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) [2025-03-04 11:32:08,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 181 transitions. [2025-03-04 11:32:08,471 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 181 transitions. Word has length 18 [2025-03-04 11:32:08,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:32:08,471 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 181 transitions. [2025-03-04 11:32:08,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.0) internal successors, (14), 9 states have internal predecessors, (14), 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) [2025-03-04 11:32:08,472 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 181 transitions. [2025-03-04 11:32:08,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-03-04 11:32:08,472 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:32:08,472 INFO L218 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] [2025-03-04 11:32:08,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-04 11:32:08,676 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:32:08,676 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_45_to_53_0Err39ASSERT_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)] === [2025-03-04 11:32:08,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:32:08,676 INFO L85 PathProgramCache]: Analyzing trace with hash 402329849, now seen corresponding path program 1 times [2025-03-04 11:32:08,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:32:08,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156334847] [2025-03-04 11:32:08,677 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:32:08,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:32:08,690 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-04 11:32:08,722 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-04 11:32:08,722 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:32:08,722 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-04 11:32:08,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2009131927] [2025-03-04 11:32:08,724 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:32:08,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:32:08,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:32:08,725 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) [2025-03-04 11:32:08,727 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-04 11:32:08,799 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-04 11:32:08,845 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-04 11:32:08,845 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:32:08,845 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:32:08,847 INFO L256 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-03-04 11:32:08,849 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:32:08,871 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2025-03-04 11:32:08,876 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 [2025-03-04 11:32:08,951 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 [2025-03-04 11:32:09,003 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 [2025-03-04 11:32:09,016 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-04 11:32:09,016 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:32:09,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:32:09,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156334847] [2025-03-04 11:32:09,242 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-04 11:32:09,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009131927] [2025-03-04 11:32:09,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009131927] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:32:09,242 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-03-04 11:32:09,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2025-03-04 11:32:09,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342598113] [2025-03-04 11:32:09,243 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-03-04 11:32:09,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-04 11:32:09,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:32:09,243 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-04 11:32:09,243 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2025-03-04 11:32:09,243 INFO L87 Difference]: Start difference. First operand 172 states and 181 transitions. Second operand has 14 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-03-04 11:32:13,621 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] [2025-03-04 11:32:17,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-04 11:32:21,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-04 11:32:21,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:32:21,712 INFO L93 Difference]: Finished difference Result 402 states and 421 transitions. [2025-03-04 11:32:21,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-04 11:32:21,716 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 38 [2025-03-04 11:32:21,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:32:21,718 INFO L225 Difference]: With dead ends: 402 [2025-03-04 11:32:21,718 INFO L226 Difference]: Without dead ends: 401 [2025-03-04 11:32:21,718 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=107, Invalid=705, Unknown=0, NotChecked=0, Total=812 [2025-03-04 11:32:21,721 INFO L435 NwaCegarLoop]: 145 mSDtfsCounter, 443 mSDsluCounter, 1425 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 26 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 1570 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2025-03-04 11:32:21,721 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 1570 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 454 Invalid, 3 Unknown, 0 Unchecked, 12.3s Time] [2025-03-04 11:32:21,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2025-03-04 11:32:21,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 297. [2025-03-04 11:32:21,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 203 states have (on average 1.7142857142857142) internal successors, (348), 266 states have internal predecessors, (348), 24 states have call successors, (24), 10 states have call predecessors, (24), 10 states have return successors, (26), 23 states have call predecessors, (26), 24 states have call successors, (26) [2025-03-04 11:32:21,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 398 transitions. [2025-03-04 11:32:21,736 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 398 transitions. Word has length 38 [2025-03-04 11:32:21,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:32:21,737 INFO L471 AbstractCegarLoop]: Abstraction has 297 states and 398 transitions. [2025-03-04 11:32:21,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 2.272727272727273) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-03-04 11:32:21,737 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 398 transitions. [2025-03-04 11:32:21,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-03-04 11:32:21,738 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:32:21,738 INFO L218 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] [2025-03-04 11:32:21,745 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-04 11:32:21,938 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:32:21,938 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11ASSERT_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)] === [2025-03-04 11:32:21,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:32:21,939 INFO L85 PathProgramCache]: Analyzing trace with hash 395733704, now seen corresponding path program 1 times [2025-03-04 11:32:21,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:32:21,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119730495] [2025-03-04 11:32:21,939 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:32:21,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:32:21,950 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-04 11:32:21,960 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-04 11:32:21,961 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:32:21,961 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:32:22,324 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-04 11:32:22,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:32:22,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119730495] [2025-03-04 11:32:22,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119730495] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:32:22,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597344100] [2025-03-04 11:32:22,325 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:32:22,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:32:22,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:32:22,328 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:32:22,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-04 11:32:22,427 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-04 11:32:22,464 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-04 11:32:22,465 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:32:22,465 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:32:22,471 INFO L256 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-03-04 11:32:22,475 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:32:22,509 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 [2025-03-04 11:32:22,511 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 19 treesize of output 11 [2025-03-04 11:32:22,657 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-04 11:32:22,657 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:32:22,873 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2025-03-04 11:32:22,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597344100] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 11:32:22,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 11:32:22,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 11] total 24 [2025-03-04 11:32:22,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456180950] [2025-03-04 11:32:22,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 11:32:22,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-04 11:32:22,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:32:22,875 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-04 11:32:22,875 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2025-03-04 11:32:22,875 INFO L87 Difference]: Start difference. First operand 297 states and 398 transitions. Second operand has 24 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 20 states have internal predecessors, (44), 6 states have call successors, (13), 4 states have call predecessors, (13), 7 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2025-03-04 11:32:27,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-04 11:32:31,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-04 11:32:36,241 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-04 11:32:40,250 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-04 11:32:44,256 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] [2025-03-04 11:32:44,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:32:44,276 INFO L93 Difference]: Finished difference Result 363 states and 416 transitions. [2025-03-04 11:32:44,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-03-04 11:32:44,276 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 20 states have internal predecessors, (44), 6 states have call successors, (13), 4 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 38 [2025-03-04 11:32:44,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:32:44,279 INFO L225 Difference]: With dead ends: 363 [2025-03-04 11:32:44,279 INFO L226 Difference]: Without dead ends: 330 [2025-03-04 11:32:44,280 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 59 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=187, Invalid=1145, Unknown=0, NotChecked=0, Total=1332 [2025-03-04 11:32:44,280 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 351 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 1404 mSolverCounterSat, 45 mSolverCounterUnsat, 15 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 1464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1404 IncrementalHoareTripleChecker+Invalid, 15 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.2s IncrementalHoareTripleChecker+Time [2025-03-04 11:32:44,280 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 628 Invalid, 1464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1404 Invalid, 15 Unknown, 0 Unchecked, 21.2s Time] [2025-03-04 11:32:44,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2025-03-04 11:32:44,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 289. [2025-03-04 11:32:44,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 196 states have (on average 1.7040816326530612) internal successors, (334), 258 states have internal predecessors, (334), 23 states have call successors, (23), 10 states have call predecessors, (23), 10 states have return successors, (25), 22 states have call predecessors, (25), 23 states have call successors, (25) [2025-03-04 11:32:44,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 382 transitions. [2025-03-04 11:32:44,293 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 382 transitions. Word has length 38 [2025-03-04 11:32:44,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:32:44,294 INFO L471 AbstractCegarLoop]: Abstraction has 289 states and 382 transitions. [2025-03-04 11:32:44,294 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 2.0952380952380953) internal successors, (44), 20 states have internal predecessors, (44), 6 states have call successors, (13), 4 states have call predecessors, (13), 7 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2025-03-04 11:32:44,294 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 382 transitions. [2025-03-04 11:32:44,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-03-04 11:32:44,294 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:32:44,294 INFO L218 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] [2025-03-04 11:32:44,313 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-04 11:32:44,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:32:44,495 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_45_to_53_0Err38ASSERT_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)] === [2025-03-04 11:32:44,496 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:32:44,496 INFO L85 PathProgramCache]: Analyzing trace with hash -412676479, now seen corresponding path program 1 times [2025-03-04 11:32:44,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:32:44,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114826372] [2025-03-04 11:32:44,496 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:32:44,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:32:44,508 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-03-04 11:32:44,525 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-04 11:32:44,525 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:32:44,526 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-04 11:32:44,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1260626131] [2025-03-04 11:32:44,527 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:32:44,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 11:32:44,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 11:32:44,529 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-04 11:32:44,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-04 11:32:44,613 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-03-04 11:32:44,656 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-03-04 11:32:44,656 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:32:44,656 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 11:32:44,658 INFO L256 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 42 conjuncts are in the unsatisfiable core [2025-03-04 11:32:44,660 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 11:32:44,680 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 19 treesize of output 11 [2025-03-04 11:32:44,683 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 [2025-03-04 11:32:44,761 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 [2025-03-04 11:32:44,808 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 [2025-03-04 11:32:44,823 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2025-03-04 11:32:44,823 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 11:32:45,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 11:32:45,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114826372] [2025-03-04 11:32:45,170 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-04 11:32:45,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260626131] [2025-03-04 11:32:45,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260626131] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 11:32:45,170 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2025-03-04 11:32:45,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2025-03-04 11:32:45,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748260519] [2025-03-04 11:32:45,170 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2025-03-04 11:32:45,170 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-04 11:32:45,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 11:32:45,171 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-04 11:32:45,171 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2025-03-04 11:32:45,171 INFO L87 Difference]: Start difference. First operand 289 states and 382 transitions. Second operand has 14 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-03-04 11:32:49,535 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] [2025-03-04 11:32:53,633 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-04 11:32:57,655 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-04 11:32:57,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 11:32:57,656 INFO L93 Difference]: Finished difference Result 374 states and 392 transitions. [2025-03-04 11:32:57,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-04 11:32:57,659 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 39 [2025-03-04 11:32:57,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 11:32:57,660 INFO L225 Difference]: With dead ends: 374 [2025-03-04 11:32:57,660 INFO L226 Difference]: Without dead ends: 373 [2025-03-04 11:32:57,661 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=107, Invalid=705, Unknown=0, NotChecked=0, Total=812 [2025-03-04 11:32:57,661 INFO L435 NwaCegarLoop]: 148 mSDtfsCounter, 305 mSDsluCounter, 1473 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 21 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 1621 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2025-03-04 11:32:57,661 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 1621 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 453 Invalid, 3 Unknown, 0 Unchecked, 12.3s Time] [2025-03-04 11:32:57,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2025-03-04 11:32:57,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 289. [2025-03-04 11:32:57,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 196 states have (on average 1.6989795918367347) internal successors, (333), 258 states have internal predecessors, (333), 23 states have call successors, (23), 10 states have call predecessors, (23), 10 states have return successors, (25), 22 states have call predecessors, (25), 23 states have call successors, (25) [2025-03-04 11:32:57,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 381 transitions. [2025-03-04 11:32:57,679 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 381 transitions. Word has length 39 [2025-03-04 11:32:57,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 11:32:57,679 INFO L471 AbstractCegarLoop]: Abstraction has 289 states and 381 transitions. [2025-03-04 11:32:57,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 2.3636363636363638) internal successors, (26), 11 states have internal predecessors, (26), 4 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2025-03-04 11:32:57,679 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 381 transitions. [2025-03-04 11:32:57,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2025-03-04 11:32:57,680 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 11:32:57,680 INFO L218 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, 1] [2025-03-04 11:32:57,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-04 11:32:57,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2025-03-04 11:32:57,881 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_45_to_53_0Err37ASSERT_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)] === [2025-03-04 11:32:57,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 11:32:57,881 INFO L85 PathProgramCache]: Analyzing trace with hash 91931127, now seen corresponding path program 1 times [2025-03-04 11:32:57,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 11:32:57,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514441465] [2025-03-04 11:32:57,882 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 11:32:57,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 11:32:57,892 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 40 statements into 1 equivalence classes. [2025-03-04 11:32:57,905 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 40 of 40 statements. [2025-03-04 11:32:57,905 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 11:32:57,905 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat