./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursified_loop-simple/recursified_nested_6.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed 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_loop-simple/recursified_nested_6.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 76648bc32cf18f500eee0df5c8487c6c0f67ad1050d870973d578953c78cde5c --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 05:48:02,591 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 05:48:02,632 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 05:48:02,637 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 05:48:02,640 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 05:48:02,663 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 05:48:02,664 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 05:48:02,665 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 05:48:02,665 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 05:48:02,665 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 05:48:02,666 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 05:48:02,666 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 05:48:02,666 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 05:48:02,666 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 05:48:02,667 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 05:48:02,667 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 05:48:02,667 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 05:48:02,667 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 05:48:02,667 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 05:48:02,667 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 05:48:02,667 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 05:48:02,668 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 05:48:02,668 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 05:48:02,668 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 05:48:02,668 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 05:48:02,668 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 05:48:02,668 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 05:48:02,668 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 05:48:02,668 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 05:48:02,668 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 05:48:02,669 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 05:48:02,669 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 05:48:02,669 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 05:48:02,669 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 05:48:02,669 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 05:48:02,669 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 05:48:02,669 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 05:48:02,669 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 05:48:02,669 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 05:48:02,669 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 05:48:02,669 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 05:48:02,669 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 05:48:02,670 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 05:48:02,670 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 ! call(reach_error())) ) 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 -> 76648bc32cf18f500eee0df5c8487c6c0f67ad1050d870973d578953c78cde5c [2025-03-08 05:48:02,875 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 05:48:02,880 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 05:48:02,882 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 05:48:02,882 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 05:48:02,882 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 05:48:02,883 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursified_loop-simple/recursified_nested_6.c [2025-03-08 05:48:03,992 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f878ce3ff/2898e4d97eae4bafaa7b9eea54bb7038/FLAG998b1eb11 [2025-03-08 05:48:04,204 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 05:48:04,205 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_loop-simple/recursified_nested_6.c [2025-03-08 05:48:04,211 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f878ce3ff/2898e4d97eae4bafaa7b9eea54bb7038/FLAG998b1eb11 [2025-03-08 05:48:04,560 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f878ce3ff/2898e4d97eae4bafaa7b9eea54bb7038 [2025-03-08 05:48:04,562 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 05:48:04,564 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 05:48:04,565 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 05:48:04,565 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 05:48:04,568 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 05:48:04,570 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:48:04" (1/1) ... [2025-03-08 05:48:04,571 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c7b462b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:48:04, skipping insertion in model container [2025-03-08 05:48:04,572 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 05:48:04" (1/1) ... [2025-03-08 05:48:04,584 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 05:48:04,677 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_loop-simple/recursified_nested_6.c[2667,2680] [2025-03-08 05:48:04,680 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 05:48:04,686 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 05:48:04,697 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/recursified_loop-simple/recursified_nested_6.c[2667,2680] [2025-03-08 05:48:04,702 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 05:48:04,711 INFO L204 MainTranslator]: Completed translation [2025-03-08 05:48:04,712 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:48:04 WrapperNode [2025-03-08 05:48:04,712 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 05:48:04,714 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 05:48:04,714 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 05:48:04,714 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 05:48:04,717 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:48:04" (1/1) ... [2025-03-08 05:48:04,724 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:48:04" (1/1) ... [2025-03-08 05:48:04,736 INFO L138 Inliner]: procedures = 15, calls = 51, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 83 [2025-03-08 05:48:04,736 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 05:48:04,737 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 05:48:04,737 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 05:48:04,737 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 05:48:04,742 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:48:04" (1/1) ... [2025-03-08 05:48:04,742 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:48:04" (1/1) ... [2025-03-08 05:48:04,743 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:48:04" (1/1) ... [2025-03-08 05:48:04,752 INFO L175 MemorySlicer]: Split 26 memory accesses to 5 slices as follows [2, 6, 6, 6, 6]. 23 percent of accesses are in the largest equivalence class. The 6 initializations are split as follows [2, 1, 1, 1, 1]. The 8 writes are split as follows [0, 2, 2, 2, 2]. [2025-03-08 05:48:04,752 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:48:04" (1/1) ... [2025-03-08 05:48:04,752 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:48:04" (1/1) ... [2025-03-08 05:48:04,760 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:48:04" (1/1) ... [2025-03-08 05:48:04,761 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:48:04" (1/1) ... [2025-03-08 05:48:04,762 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:48:04" (1/1) ... [2025-03-08 05:48:04,762 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:48:04" (1/1) ... [2025-03-08 05:48:04,763 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 05:48:04,764 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 05:48:04,764 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 05:48:04,764 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 05:48:04,765 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:48:04" (1/1) ... [2025-03-08 05:48:04,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 05:48:04,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:48:04,791 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) [2025-03-08 05:48:04,793 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 [2025-03-08 05:48:04,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 05:48:04,808 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_28_to_28_0 [2025-03-08 05:48:04,808 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_28_to_28_0 [2025-03-08 05:48:04,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 05:48:04,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-08 05:48:04,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-08 05:48:04,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-08 05:48:04,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-03-08 05:48:04,808 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-08 05:48:04,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-08 05:48:04,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-08 05:48:04,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-08 05:48:04,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-08 05:48:04,809 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-03-08 05:48:04,809 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_25_to_26_0 [2025-03-08 05:48:04,809 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_25_to_26_0 [2025-03-08 05:48:04,809 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_27_to_28_0 [2025-03-08 05:48:04,809 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_27_to_28_0 [2025-03-08 05:48:04,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 05:48:04,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 05:48:04,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-08 05:48:04,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-08 05:48:04,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-08 05:48:04,809 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-08 05:48:04,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-03-08 05:48:04,810 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_26_to_27_0 [2025-03-08 05:48:04,810 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_26_to_27_0 [2025-03-08 05:48:04,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-08 05:48:04,878 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 05:48:04,879 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 05:48:04,995 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L103: 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_~#d~0#1.base, main_~#d~0#1.offset);havoc main_~#d~0#1.base, main_~#d~0#1.offset;call ULTIMATE.dealloc(main_~#e~0#1.base, main_~#e~0#1.offset);havoc main_~#e~0#1.base, main_~#e~0#1.offset;call ULTIMATE.dealloc(main_~#f~0#1.base, main_~#f~0#1.offset);havoc main_~#f~0#1.base, main_~#f~0#1.offset; [2025-03-08 05:48:05,025 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2025-03-08 05:48:05,025 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 05:48:05,031 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 05:48:05,031 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 05:48:05,032 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:48:05 BoogieIcfgContainer [2025-03-08 05:48:05,032 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 05:48:05,033 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 05:48:05,033 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 05:48:05,036 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 05:48:05,036 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 05:48:04" (1/3) ... [2025-03-08 05:48:05,037 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1067c668 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:48:05, skipping insertion in model container [2025-03-08 05:48:05,037 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 05:48:04" (2/3) ... [2025-03-08 05:48:05,037 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1067c668 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 05:48:05, skipping insertion in model container [2025-03-08 05:48:05,037 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 05:48:05" (3/3) ... [2025-03-08 05:48:05,038 INFO L128 eAbstractionObserver]: Analyzing ICFG recursified_nested_6.c [2025-03-08 05:48:05,046 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 05:48:05,047 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG recursified_nested_6.c that has 5 procedures, 46 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-03-08 05:48:05,077 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 05:48:05,086 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;@630eabe4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 05:48:05,087 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 05:48:05,089 INFO L276 IsEmpty]: Start isEmpty. Operand has 46 states, 32 states have (on average 1.375) internal successors, (44), 37 states have internal predecessors, (44), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-03-08 05:48:05,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2025-03-08 05:48:05,092 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:48:05,093 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:48:05,093 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:48:05,096 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:48:05,096 INFO L85 PathProgramCache]: Analyzing trace with hash 978872887, now seen corresponding path program 1 times [2025-03-08 05:48:05,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:48:05,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215751289] [2025-03-08 05:48:05,100 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:48:05,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:48:05,149 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 12 statements into 1 equivalence classes. [2025-03-08 05:48:05,169 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 12 of 12 statements. [2025-03-08 05:48:05,170 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:48:05,170 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:48:05,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 05:48:05,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:48:05,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215751289] [2025-03-08 05:48:05,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215751289] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:48:05,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:48:05,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 05:48:05,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833131098] [2025-03-08 05:48:05,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:48:05,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 05:48:05,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:48:05,291 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 05:48:05,292 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 05:48:05,293 INFO L87 Difference]: Start difference. First operand has 46 states, 32 states have (on average 1.375) internal successors, (44), 37 states have internal predecessors, (44), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 05:48:05,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:48:05,318 INFO L93 Difference]: Finished difference Result 64 states and 85 transitions. [2025-03-08 05:48:05,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 05:48:05,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2025-03-08 05:48:05,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:48:05,323 INFO L225 Difference]: With dead ends: 64 [2025-03-08 05:48:05,323 INFO L226 Difference]: Without dead ends: 46 [2025-03-08 05:48:05,325 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 05:48:05,326 INFO L435 NwaCegarLoop]: 57 mSDtfsCounter, 3 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:48:05,327 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 111 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:48:05,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2025-03-08 05:48:05,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 43. [2025-03-08 05:48:05,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 34 states have internal predecessors, (40), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-03-08 05:48:05,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 56 transitions. [2025-03-08 05:48:05,352 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 56 transitions. Word has length 12 [2025-03-08 05:48:05,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:48:05,353 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 56 transitions. [2025-03-08 05:48:05,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 05:48:05,353 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 56 transitions. [2025-03-08 05:48:05,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-03-08 05:48:05,354 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:48:05,354 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:48:05,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 05:48:05,354 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:48:05,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:48:05,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1616352403, now seen corresponding path program 1 times [2025-03-08 05:48:05,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:48:05,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901129084] [2025-03-08 05:48:05,355 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:48:05,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:48:05,365 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-03-08 05:48:05,374 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-03-08 05:48:05,374 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:48:05,374 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:48:05,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 05:48:05,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:48:05,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901129084] [2025-03-08 05:48:05,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901129084] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:48:05,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 05:48:05,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 05:48:05,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841335773] [2025-03-08 05:48:05,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:48:05,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 05:48:05,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:48:05,424 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 05:48:05,424 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 05:48:05,424 INFO L87 Difference]: Start difference. First operand 43 states and 56 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 05:48:05,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:48:05,440 INFO L93 Difference]: Finished difference Result 86 states and 114 transitions. [2025-03-08 05:48:05,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 05:48:05,441 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2025-03-08 05:48:05,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:48:05,442 INFO L225 Difference]: With dead ends: 86 [2025-03-08 05:48:05,442 INFO L226 Difference]: Without dead ends: 46 [2025-03-08 05:48:05,443 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 05:48:05,443 INFO L435 NwaCegarLoop]: 53 mSDtfsCounter, 1 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:48:05,443 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 102 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:48:05,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2025-03-08 05:48:05,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2025-03-08 05:48:05,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 35 states have internal predecessors, (41), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2025-03-08 05:48:05,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 57 transitions. [2025-03-08 05:48:05,448 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 57 transitions. Word has length 14 [2025-03-08 05:48:05,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:48:05,448 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 57 transitions. [2025-03-08 05:48:05,449 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 05:48:05,449 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 57 transitions. [2025-03-08 05:48:05,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-03-08 05:48:05,449 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:48:05,450 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:48:05,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-08 05:48:05,450 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:48:05,450 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:48:05,450 INFO L85 PathProgramCache]: Analyzing trace with hash -61201908, now seen corresponding path program 1 times [2025-03-08 05:48:05,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:48:05,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717183899] [2025-03-08 05:48:05,451 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:48:05,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:48:05,466 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-08 05:48:05,479 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-08 05:48:05,479 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:48:05,480 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:48:05,557 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 05:48:05,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:48:05,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717183899] [2025-03-08 05:48:05,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717183899] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:48:05,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910980188] [2025-03-08 05:48:05,558 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:48:05,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:48:05,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:48:05,560 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) [2025-03-08 05:48:05,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 05:48:05,615 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 21 statements into 1 equivalence classes. [2025-03-08 05:48:05,644 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 21 of 21 statements. [2025-03-08 05:48:05,644 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:48:05,644 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:48:05,646 INFO L256 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 05:48:05,649 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:48:05,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 05:48:05,679 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 05:48:05,705 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 05:48:05,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [910980188] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 05:48:05,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 05:48:05,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-03-08 05:48:05,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42784326] [2025-03-08 05:48:05,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 05:48:05,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 05:48:05,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:48:05,706 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 05:48:05,706 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-08 05:48:05,707 INFO L87 Difference]: Start difference. First operand 44 states and 57 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-08 05:48:05,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:48:05,765 INFO L93 Difference]: Finished difference Result 94 states and 126 transitions. [2025-03-08 05:48:05,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 05:48:05,766 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 21 [2025-03-08 05:48:05,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:48:05,767 INFO L225 Difference]: With dead ends: 94 [2025-03-08 05:48:05,767 INFO L226 Difference]: Without dead ends: 53 [2025-03-08 05:48:05,767 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-08 05:48:05,768 INFO L435 NwaCegarLoop]: 53 mSDtfsCounter, 2 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:48:05,768 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 293 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:48:05,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2025-03-08 05:48:05,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2025-03-08 05:48:05,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 37 states have (on average 1.2702702702702702) internal successors, (47), 41 states have internal predecessors, (47), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2025-03-08 05:48:05,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 69 transitions. [2025-03-08 05:48:05,776 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 69 transitions. Word has length 21 [2025-03-08 05:48:05,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:48:05,777 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 69 transitions. [2025-03-08 05:48:05,777 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2025-03-08 05:48:05,777 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 69 transitions. [2025-03-08 05:48:05,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-03-08 05:48:05,779 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:48:05,779 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:48:05,785 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 05:48:05,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:48:05,979 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:48:05,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:48:05,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1305020333, now seen corresponding path program 2 times [2025-03-08 05:48:05,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:48:05,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536498784] [2025-03-08 05:48:05,980 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 05:48:05,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:48:05,994 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-03-08 05:48:06,007 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-03-08 05:48:06,007 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 05:48:06,007 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:48:06,262 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2025-03-08 05:48:06,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:48:06,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536498784] [2025-03-08 05:48:06,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536498784] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:48:06,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702777245] [2025-03-08 05:48:06,262 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 05:48:06,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:48:06,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:48:06,264 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) [2025-03-08 05:48:06,265 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 05:48:06,315 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 42 statements into 2 equivalence classes. [2025-03-08 05:48:06,347 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 42 of 42 statements. [2025-03-08 05:48:06,347 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 05:48:06,347 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:48:06,348 INFO L256 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-08 05:48:06,350 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:48:06,409 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-08 05:48:06,409 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 05:48:06,477 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-08 05:48:06,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702777245] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 05:48:06,477 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 05:48:06,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2025-03-08 05:48:06,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627310859] [2025-03-08 05:48:06,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 05:48:06,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-08 05:48:06,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:48:06,479 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-08 05:48:06,479 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2025-03-08 05:48:06,479 INFO L87 Difference]: Start difference. First operand 53 states and 69 transitions. Second operand has 12 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2025-03-08 05:48:06,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:48:06,697 INFO L93 Difference]: Finished difference Result 111 states and 153 transitions. [2025-03-08 05:48:06,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-08 05:48:06,698 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) Word has length 42 [2025-03-08 05:48:06,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:48:06,700 INFO L225 Difference]: With dead ends: 111 [2025-03-08 05:48:06,700 INFO L226 Difference]: Without dead ends: 61 [2025-03-08 05:48:06,700 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 74 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2025-03-08 05:48:06,701 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 22 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 05:48:06,701 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 131 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 05:48:06,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2025-03-08 05:48:06,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2025-03-08 05:48:06,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 42 states have (on average 1.2380952380952381) internal successors, (52), 46 states have internal predecessors, (52), 13 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (14), 13 states have call predecessors, (14), 13 states have call successors, (14) [2025-03-08 05:48:06,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 79 transitions. [2025-03-08 05:48:06,711 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 79 transitions. Word has length 42 [2025-03-08 05:48:06,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:48:06,711 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 79 transitions. [2025-03-08 05:48:06,711 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.3636363636363638) internal successors, (37), 11 states have internal predecessors, (37), 7 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 6 states have call predecessors, (7), 7 states have call successors, (7) [2025-03-08 05:48:06,711 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 79 transitions. [2025-03-08 05:48:06,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2025-03-08 05:48:06,713 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:48:06,713 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:48:06,722 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-08 05:48:06,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2025-03-08 05:48:06,920 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:48:06,920 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:48:06,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1553464477, now seen corresponding path program 1 times [2025-03-08 05:48:06,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:48:06,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432590852] [2025-03-08 05:48:06,921 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:48:06,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:48:06,939 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 122 statements into 1 equivalence classes. [2025-03-08 05:48:06,945 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 122 of 122 statements. [2025-03-08 05:48:06,945 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:48:06,945 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:48:07,284 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 14 proven. 55 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2025-03-08 05:48:07,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:48:07,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432590852] [2025-03-08 05:48:07,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432590852] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:48:07,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206560847] [2025-03-08 05:48:07,284 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:48:07,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:48:07,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:48:07,286 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) [2025-03-08 05:48:07,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 05:48:07,370 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 122 statements into 1 equivalence classes. [2025-03-08 05:48:07,464 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 122 of 122 statements. [2025-03-08 05:48:07,464 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:48:07,464 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:48:07,468 INFO L256 TraceCheckSpWp]: Trace formula consists of 944 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 05:48:07,472 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:48:07,515 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2025-03-08 05:48:07,515 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 05:48:07,661 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2025-03-08 05:48:07,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206560847] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 05:48:07,661 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 05:48:07,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 10 [2025-03-08 05:48:07,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112272441] [2025-03-08 05:48:07,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 05:48:07,662 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2025-03-08 05:48:07,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:48:07,662 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2025-03-08 05:48:07,662 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2025-03-08 05:48:07,662 INFO L87 Difference]: Start difference. First operand 61 states and 79 transitions. Second operand has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 5 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2025-03-08 05:48:07,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:48:07,807 INFO L93 Difference]: Finished difference Result 181 states and 267 transitions. [2025-03-08 05:48:07,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 05:48:07,808 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 5 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) Word has length 122 [2025-03-08 05:48:07,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:48:07,809 INFO L225 Difference]: With dead ends: 181 [2025-03-08 05:48:07,809 INFO L226 Difference]: Without dead ends: 123 [2025-03-08 05:48:07,810 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2025-03-08 05:48:07,810 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 23 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 05:48:07,810 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 186 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 05:48:07,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2025-03-08 05:48:07,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 123. [2025-03-08 05:48:07,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 85 states have (on average 1.1529411764705881) internal successors, (98), 89 states have internal predecessors, (98), 31 states have call successors, (31), 4 states have call predecessors, (31), 6 states have return successors, (33), 31 states have call predecessors, (33), 31 states have call successors, (33) [2025-03-08 05:48:07,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 162 transitions. [2025-03-08 05:48:07,821 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 162 transitions. Word has length 122 [2025-03-08 05:48:07,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:48:07,822 INFO L471 AbstractCegarLoop]: Abstraction has 123 states and 162 transitions. [2025-03-08 05:48:07,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.777777777777778) internal successors, (43), 9 states have internal predecessors, (43), 5 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (8), 4 states have call predecessors, (8), 5 states have call successors, (8) [2025-03-08 05:48:07,822 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 162 transitions. [2025-03-08 05:48:07,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 717 [2025-03-08 05:48:07,834 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:48:07,835 INFO L218 NwaCegarLoop]: trace histogram [48, 48, 48, 48, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:48:07,844 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-08 05:48:08,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:48:08,040 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:48:08,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:48:08,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1984913063, now seen corresponding path program 1 times [2025-03-08 05:48:08,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:48:08,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497985784] [2025-03-08 05:48:08,040 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:48:08,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:48:08,125 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 716 statements into 1 equivalence classes. [2025-03-08 05:48:08,136 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 716 of 716 statements. [2025-03-08 05:48:08,136 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:48:08,136 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:48:09,443 INFO L134 CoverageAnalysis]: Checked inductivity of 12724 backedges. 58 proven. 391 refuted. 0 times theorem prover too weak. 12275 trivial. 0 not checked. [2025-03-08 05:48:09,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:48:09,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497985784] [2025-03-08 05:48:09,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497985784] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:48:09,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465172604] [2025-03-08 05:48:09,443 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:48:09,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:48:09,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:48:09,445 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) [2025-03-08 05:48:09,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-08 05:48:09,727 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 716 statements into 1 equivalence classes. [2025-03-08 05:48:10,168 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 716 of 716 statements. [2025-03-08 05:48:10,169 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:48:10,169 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:48:10,185 INFO L256 TraceCheckSpWp]: Trace formula consists of 5114 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-08 05:48:10,199 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:48:10,366 INFO L134 CoverageAnalysis]: Checked inductivity of 12724 backedges. 0 proven. 736 refuted. 0 times theorem prover too weak. 11988 trivial. 0 not checked. [2025-03-08 05:48:10,367 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 05:48:11,095 INFO L134 CoverageAnalysis]: Checked inductivity of 12724 backedges. 0 proven. 736 refuted. 0 times theorem prover too weak. 11988 trivial. 0 not checked. [2025-03-08 05:48:11,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465172604] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 05:48:11,095 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 05:48:11,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 12 [2025-03-08 05:48:11,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094637845] [2025-03-08 05:48:11,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 05:48:11,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-08 05:48:11,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:48:11,097 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-08 05:48:11,097 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2025-03-08 05:48:11,097 INFO L87 Difference]: Start difference. First operand 123 states and 162 transitions. Second operand has 12 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 states have internal predecessors, (63), 8 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (15), 7 states have call predecessors, (15), 8 states have call successors, (15) [2025-03-08 05:48:11,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:48:11,225 INFO L93 Difference]: Finished difference Result 283 states and 416 transitions. [2025-03-08 05:48:11,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-08 05:48:11,225 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 states have internal predecessors, (63), 8 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (15), 7 states have call predecessors, (15), 8 states have call successors, (15) Word has length 716 [2025-03-08 05:48:11,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:48:11,227 INFO L225 Difference]: With dead ends: 283 [2025-03-08 05:48:11,227 INFO L226 Difference]: Without dead ends: 165 [2025-03-08 05:48:11,228 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1437 GetRequests, 1422 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2025-03-08 05:48:11,228 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 17 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 05:48:11,229 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 195 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 05:48:11,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2025-03-08 05:48:11,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2025-03-08 05:48:11,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 114 states have (on average 1.131578947368421) internal successors, (129), 118 states have internal predecessors, (129), 43 states have call successors, (43), 4 states have call predecessors, (43), 7 states have return successors, (46), 43 states have call predecessors, (46), 43 states have call successors, (46) [2025-03-08 05:48:11,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 218 transitions. [2025-03-08 05:48:11,245 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 218 transitions. Word has length 716 [2025-03-08 05:48:11,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:48:11,245 INFO L471 AbstractCegarLoop]: Abstraction has 165 states and 218 transitions. [2025-03-08 05:48:11,245 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 states have internal predecessors, (63), 8 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (15), 7 states have call predecessors, (15), 8 states have call successors, (15) [2025-03-08 05:48:11,245 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 218 transitions. [2025-03-08 05:48:11,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1465 [2025-03-08 05:48:11,273 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:48:11,273 INFO L218 NwaCegarLoop]: trace histogram [72, 72, 72, 72, 72, 72, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:48:11,286 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-08 05:48:11,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:48:11,474 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:48:11,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:48:11,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1298341951, now seen corresponding path program 1 times [2025-03-08 05:48:11,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:48:11,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747089453] [2025-03-08 05:48:11,478 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:48:11,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:48:11,609 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1464 statements into 1 equivalence classes. [2025-03-08 05:48:11,621 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1464 of 1464 statements. [2025-03-08 05:48:11,622 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:48:11,622 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:48:14,046 INFO L134 CoverageAnalysis]: Checked inductivity of 41004 backedges. 88 proven. 805 refuted. 0 times theorem prover too weak. 40111 trivial. 0 not checked. [2025-03-08 05:48:14,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:48:14,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747089453] [2025-03-08 05:48:14,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747089453] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:48:14,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090399782] [2025-03-08 05:48:14,047 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:48:14,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:48:14,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:48:14,049 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) [2025-03-08 05:48:14,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-08 05:48:14,496 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1464 statements into 1 equivalence classes. [2025-03-08 05:48:15,226 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1464 of 1464 statements. [2025-03-08 05:48:15,226 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:48:15,226 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:48:15,258 INFO L256 TraceCheckSpWp]: Trace formula consists of 9350 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-08 05:48:15,289 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:48:15,314 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 [2025-03-08 05:48:15,380 INFO L134 CoverageAnalysis]: Checked inductivity of 41004 backedges. 12118 proven. 0 refuted. 0 times theorem prover too weak. 28886 trivial. 0 not checked. [2025-03-08 05:48:15,380 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-08 05:48:15,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090399782] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 05:48:15,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-08 05:48:15,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 8 [2025-03-08 05:48:15,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283350799] [2025-03-08 05:48:15,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 05:48:15,381 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-08 05:48:15,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:48:15,382 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-08 05:48:15,382 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-08 05:48:15,382 INFO L87 Difference]: Start difference. First operand 165 states and 218 transitions. Second operand has 6 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2025-03-08 05:48:15,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:48:15,433 INFO L93 Difference]: Finished difference Result 327 states and 474 transitions. [2025-03-08 05:48:15,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 05:48:15,434 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) Word has length 1464 [2025-03-08 05:48:15,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:48:15,435 INFO L225 Difference]: With dead ends: 327 [2025-03-08 05:48:15,435 INFO L226 Difference]: Without dead ends: 167 [2025-03-08 05:48:15,436 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1469 GetRequests, 1463 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2025-03-08 05:48:15,436 INFO L435 NwaCegarLoop]: 50 mSDtfsCounter, 11 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-08 05:48:15,437 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 140 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-08 05:48:15,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2025-03-08 05:48:15,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 167. [2025-03-08 05:48:15,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 115 states have (on average 1.1304347826086956) internal successors, (130), 119 states have internal predecessors, (130), 43 states have call successors, (43), 4 states have call predecessors, (43), 8 states have return successors, (47), 43 states have call predecessors, (47), 43 states have call successors, (47) [2025-03-08 05:48:15,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 220 transitions. [2025-03-08 05:48:15,459 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 220 transitions. Word has length 1464 [2025-03-08 05:48:15,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:48:15,459 INFO L471 AbstractCegarLoop]: Abstraction has 167 states and 220 transitions. [2025-03-08 05:48:15,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (18), 2 states have call predecessors, (18), 3 states have call successors, (18) [2025-03-08 05:48:15,459 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 220 transitions. [2025-03-08 05:48:15,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1645 [2025-03-08 05:48:15,472 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:48:15,473 INFO L218 NwaCegarLoop]: trace histogram [72, 72, 72, 72, 72, 72, 72, 72, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:48:15,493 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-08 05:48:15,673 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:48:15,673 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:48:15,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:48:15,674 INFO L85 PathProgramCache]: Analyzing trace with hash 457378719, now seen corresponding path program 1 times [2025-03-08 05:48:15,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:48:15,674 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462740002] [2025-03-08 05:48:15,675 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:48:15,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:48:15,806 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1644 statements into 1 equivalence classes. [2025-03-08 05:48:15,823 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1644 of 1644 statements. [2025-03-08 05:48:15,824 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:48:15,824 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:48:20,582 INFO L134 CoverageAnalysis]: Checked inductivity of 49338 backedges. 225 proven. 1091 refuted. 0 times theorem prover too weak. 48022 trivial. 0 not checked. [2025-03-08 05:48:20,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:48:20,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462740002] [2025-03-08 05:48:20,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462740002] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:48:20,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1397472160] [2025-03-08 05:48:20,583 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 05:48:20,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:48:20,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:48:20,585 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) [2025-03-08 05:48:20,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-08 05:48:21,095 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 1644 statements into 1 equivalence classes. [2025-03-08 05:48:21,892 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 1644 of 1644 statements. [2025-03-08 05:48:21,892 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 05:48:21,893 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:48:21,931 INFO L256 TraceCheckSpWp]: Trace formula consists of 10034 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-03-08 05:48:21,963 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:48:21,983 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 [2025-03-08 05:48:22,103 INFO L134 CoverageAnalysis]: Checked inductivity of 49338 backedges. 23839 proven. 3 refuted. 0 times theorem prover too weak. 25496 trivial. 0 not checked. [2025-03-08 05:48:22,104 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 05:48:24,174 INFO L134 CoverageAnalysis]: Checked inductivity of 49338 backedges. 1455 proven. 708 refuted. 0 times theorem prover too weak. 47175 trivial. 0 not checked. [2025-03-08 05:48:24,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1397472160] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 05:48:24,174 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 05:48:24,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 22 [2025-03-08 05:48:24,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748514040] [2025-03-08 05:48:24,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 05:48:24,176 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-03-08 05:48:24,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:48:24,177 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-03-08 05:48:24,177 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2025-03-08 05:48:24,177 INFO L87 Difference]: Start difference. First operand 167 states and 220 transitions. Second operand has 22 states, 16 states have (on average 5.0625) internal successors, (81), 19 states have internal predecessors, (81), 11 states have call successors, (28), 5 states have call predecessors, (28), 7 states have return successors, (30), 8 states have call predecessors, (30), 11 states have call successors, (30) [2025-03-08 05:48:24,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:48:24,370 INFO L93 Difference]: Finished difference Result 333 states and 479 transitions. [2025-03-08 05:48:24,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2025-03-08 05:48:24,370 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 16 states have (on average 5.0625) internal successors, (81), 19 states have internal predecessors, (81), 11 states have call successors, (28), 5 states have call predecessors, (28), 7 states have return successors, (30), 8 states have call predecessors, (30), 11 states have call successors, (30) Word has length 1644 [2025-03-08 05:48:24,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:48:24,374 INFO L225 Difference]: With dead ends: 333 [2025-03-08 05:48:24,374 INFO L226 Difference]: Without dead ends: 171 [2025-03-08 05:48:24,376 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3301 GetRequests, 3276 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=150, Invalid=552, Unknown=0, NotChecked=0, Total=702 [2025-03-08 05:48:24,376 INFO L435 NwaCegarLoop]: 42 mSDtfsCounter, 45 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 05:48:24,377 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 371 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 05:48:24,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2025-03-08 05:48:24,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 171. [2025-03-08 05:48:24,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 117 states have (on average 1.1282051282051282) internal successors, (132), 121 states have internal predecessors, (132), 43 states have call successors, (43), 4 states have call predecessors, (43), 10 states have return successors, (49), 45 states have call predecessors, (49), 43 states have call successors, (49) [2025-03-08 05:48:24,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 224 transitions. [2025-03-08 05:48:24,391 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 224 transitions. Word has length 1644 [2025-03-08 05:48:24,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:48:24,392 INFO L471 AbstractCegarLoop]: Abstraction has 171 states and 224 transitions. [2025-03-08 05:48:24,392 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 16 states have (on average 5.0625) internal successors, (81), 19 states have internal predecessors, (81), 11 states have call successors, (28), 5 states have call predecessors, (28), 7 states have return successors, (30), 8 states have call predecessors, (30), 11 states have call successors, (30) [2025-03-08 05:48:24,392 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 224 transitions. [2025-03-08 05:48:24,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2797 [2025-03-08 05:48:24,454 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:48:24,455 INFO L218 NwaCegarLoop]: trace histogram [216, 216, 144, 144, 108, 108, 108, 108, 108, 108, 108, 108, 108, 108, 72, 72, 72, 72, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 36, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:48:24,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-03-08 05:48:24,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:48:24,656 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:48:24,657 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:48:24,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1354831585, now seen corresponding path program 2 times [2025-03-08 05:48:24,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:48:24,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080104037] [2025-03-08 05:48:24,657 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 05:48:24,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:48:24,810 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 2796 statements into 2 equivalence classes. [2025-03-08 05:48:24,833 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 2796 of 2796 statements. [2025-03-08 05:48:24,833 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 05:48:24,833 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:48:37,033 INFO L134 CoverageAnalysis]: Checked inductivity of 183546 backedges. 217 proven. 887 refuted. 0 times theorem prover too weak. 182442 trivial. 0 not checked. [2025-03-08 05:48:37,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:48:37,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080104037] [2025-03-08 05:48:37,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080104037] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:48:37,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279199601] [2025-03-08 05:48:37,034 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 05:48:37,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:48:37,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:48:37,036 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) [2025-03-08 05:48:37,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-08 05:48:37,725 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 2796 statements into 2 equivalence classes. [2025-03-08 05:48:38,807 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 2796 of 2796 statements. [2025-03-08 05:48:38,807 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 05:48:38,807 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:48:38,865 INFO L256 TraceCheckSpWp]: Trace formula consists of 14858 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-03-08 05:48:38,894 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:48:38,913 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 [2025-03-08 05:48:39,029 INFO L134 CoverageAnalysis]: Checked inductivity of 183546 backedges. 91619 proven. 3 refuted. 0 times theorem prover too weak. 91924 trivial. 0 not checked. [2025-03-08 05:48:39,029 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 05:48:42,951 INFO L134 CoverageAnalysis]: Checked inductivity of 183546 backedges. 1379 proven. 384 refuted. 0 times theorem prover too weak. 181783 trivial. 0 not checked. [2025-03-08 05:48:42,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279199601] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 05:48:42,951 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 05:48:42,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 24 [2025-03-08 05:48:42,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598425166] [2025-03-08 05:48:42,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 05:48:42,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-08 05:48:42,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:48:42,955 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-08 05:48:42,956 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2025-03-08 05:48:42,956 INFO L87 Difference]: Start difference. First operand 171 states and 224 transitions. Second operand has 24 states, 18 states have (on average 4.555555555555555) internal successors, (82), 20 states have internal predecessors, (82), 11 states have call successors, (27), 6 states have call predecessors, (27), 8 states have return successors, (28), 8 states have call predecessors, (28), 11 states have call successors, (28) [2025-03-08 05:48:43,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:48:43,270 INFO L93 Difference]: Finished difference Result 341 states and 520 transitions. [2025-03-08 05:48:43,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-08 05:48:43,270 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 18 states have (on average 4.555555555555555) internal successors, (82), 20 states have internal predecessors, (82), 11 states have call successors, (27), 6 states have call predecessors, (27), 8 states have return successors, (28), 8 states have call predecessors, (28), 11 states have call successors, (28) Word has length 2796 [2025-03-08 05:48:43,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:48:43,273 INFO L225 Difference]: With dead ends: 341 [2025-03-08 05:48:43,273 INFO L226 Difference]: Without dead ends: 175 [2025-03-08 05:48:43,274 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5610 GetRequests, 5578 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=183, Invalid=939, Unknown=0, NotChecked=0, Total=1122 [2025-03-08 05:48:43,274 INFO L435 NwaCegarLoop]: 26 mSDtfsCounter, 53 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 352 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 352 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 05:48:43,274 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 251 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 05:48:43,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2025-03-08 05:48:43,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2025-03-08 05:48:43,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 119 states have (on average 1.1260504201680672) internal successors, (134), 123 states have internal predecessors, (134), 43 states have call successors, (43), 4 states have call predecessors, (43), 12 states have return successors, (51), 47 states have call predecessors, (51), 43 states have call successors, (51) [2025-03-08 05:48:43,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 228 transitions. [2025-03-08 05:48:43,288 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 228 transitions. Word has length 2796 [2025-03-08 05:48:43,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:48:43,289 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 228 transitions. [2025-03-08 05:48:43,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 18 states have (on average 4.555555555555555) internal successors, (82), 20 states have internal predecessors, (82), 11 states have call successors, (27), 6 states have call predecessors, (27), 8 states have return successors, (28), 8 states have call predecessors, (28), 11 states have call successors, (28) [2025-03-08 05:48:43,289 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 228 transitions. [2025-03-08 05:48:43,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9565 [2025-03-08 05:48:43,607 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:48:43,609 INFO L218 NwaCegarLoop]: trace histogram [864, 864, 576, 576, 432, 432, 432, 432, 432, 432, 432, 432, 432, 432, 216, 216, 144, 144, 144, 144, 144, 144, 144, 108, 108, 72, 72, 72, 72, 72, 72, 72, 36, 36, 36, 36, 36, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:48:43,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-08 05:48:43,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:48:43,810 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:48:43,811 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:48:43,812 INFO L85 PathProgramCache]: Analyzing trace with hash 417308063, now seen corresponding path program 3 times [2025-03-08 05:48:43,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:48:43,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589329656] [2025-03-08 05:48:43,813 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 05:48:43,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:48:44,274 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 9564 statements into 379 equivalence classes. [2025-03-08 05:48:44,283 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 72 of 9564 statements. [2025-03-08 05:48:44,283 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-03-08 05:48:44,283 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:48:44,655 INFO L134 CoverageAnalysis]: Checked inductivity of 2682738 backedges. 1801 proven. 8 refuted. 0 times theorem prover too weak. 2680929 trivial. 0 not checked. [2025-03-08 05:48:44,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 05:48:44,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589329656] [2025-03-08 05:48:44,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589329656] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 05:48:44,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1229987414] [2025-03-08 05:48:44,656 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 05:48:44,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 05:48:44,656 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 05:48:44,657 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) [2025-03-08 05:48:44,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-08 05:48:46,504 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 9564 statements into 379 equivalence classes. [2025-03-08 05:48:46,547 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) and asserted 72 of 9564 statements. [2025-03-08 05:48:46,547 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2025-03-08 05:48:46,547 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 05:48:46,572 INFO L256 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 44 conjuncts are in the unsatisfiable core [2025-03-08 05:48:46,649 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 05:48:46,985 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 [2025-03-08 05:48:47,147 INFO L134 CoverageAnalysis]: Checked inductivity of 2682738 backedges. 1797 proven. 8 refuted. 0 times theorem prover too weak. 2680933 trivial. 0 not checked. [2025-03-08 05:48:47,147 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 05:49:03,607 INFO L134 CoverageAnalysis]: Checked inductivity of 2682738 backedges. 1797 proven. 15 refuted. 0 times theorem prover too weak. 2680926 trivial. 0 not checked. [2025-03-08 05:49:03,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1229987414] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 05:49:03,607 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 05:49:03,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 14] total 29 [2025-03-08 05:49:03,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161342955] [2025-03-08 05:49:03,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 05:49:03,615 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2025-03-08 05:49:03,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 05:49:03,615 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2025-03-08 05:49:03,616 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=663, Unknown=0, NotChecked=0, Total=812 [2025-03-08 05:49:03,616 INFO L87 Difference]: Start difference. First operand 175 states and 228 transitions. Second operand has 29 states, 21 states have (on average 3.380952380952381) internal successors, (71), 25 states have internal predecessors, (71), 14 states have call successors, (21), 5 states have call predecessors, (21), 8 states have return successors, (22), 12 states have call predecessors, (22), 14 states have call successors, (22) [2025-03-08 05:49:03,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 05:49:03,846 INFO L93 Difference]: Finished difference Result 358 states and 537 transitions. [2025-03-08 05:49:03,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-08 05:49:03,851 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 21 states have (on average 3.380952380952381) internal successors, (71), 25 states have internal predecessors, (71), 14 states have call successors, (21), 5 states have call predecessors, (21), 8 states have return successors, (22), 12 states have call predecessors, (22), 14 states have call successors, (22) Word has length 9564 [2025-03-08 05:49:03,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 05:49:03,854 INFO L225 Difference]: With dead ends: 358 [2025-03-08 05:49:03,855 INFO L226 Difference]: Without dead ends: 188 [2025-03-08 05:49:03,856 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19145 GetRequests, 19112 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=217, Invalid=905, Unknown=0, NotChecked=0, Total=1122 [2025-03-08 05:49:03,857 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 40 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 05:49:03,857 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 429 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 05:49:03,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2025-03-08 05:49:03,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 179. [2025-03-08 05:49:03,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 121 states have (on average 1.1239669421487604) internal successors, (136), 125 states have internal predecessors, (136), 43 states have call successors, (43), 4 states have call predecessors, (43), 14 states have return successors, (53), 49 states have call predecessors, (53), 43 states have call successors, (53) [2025-03-08 05:49:03,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 232 transitions. [2025-03-08 05:49:03,873 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 232 transitions. Word has length 9564 [2025-03-08 05:49:03,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 05:49:03,875 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 232 transitions. [2025-03-08 05:49:03,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 21 states have (on average 3.380952380952381) internal successors, (71), 25 states have internal predecessors, (71), 14 states have call successors, (21), 5 states have call predecessors, (21), 8 states have return successors, (22), 12 states have call predecessors, (22), 14 states have call successors, (22) [2025-03-08 05:49:03,876 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 232 transitions. [2025-03-08 05:49:05,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18853 [2025-03-08 05:49:05,302 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 05:49:05,306 INFO L218 NwaCegarLoop]: trace histogram [1728, 1728, 1152, 1152, 864, 864, 864, 864, 864, 864, 864, 864, 864, 864, 432, 432, 288, 288, 288, 288, 288, 288, 288, 180, 180, 144, 144, 144, 144, 144, 144, 144, 36, 36, 36, 36, 36, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 05:49:05,315 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-08 05:49:05,506 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,SelfDestructingSolverStorable9 [2025-03-08 05:49:05,507 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 05:49:05,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 05:49:05,510 INFO L85 PathProgramCache]: Analyzing trace with hash -1130550497, now seen corresponding path program 4 times [2025-03-08 05:49:05,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 05:49:05,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1237761461] [2025-03-08 05:49:05,511 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 05:49:05,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 05:49:06,818 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 18852 statements into 2 equivalence classes. [2025-03-08 05:49:11,776 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 18851 of 18852 statements. [2025-03-08 05:49:11,776 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-03-08 05:49:11,776 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat