./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 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/recursified_loop-simple/recursified_nested_6.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/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-?-48c9605-m [2025-02-07 21:08:02,659 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-07 21:08:02,718 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-07 21:08:02,729 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-07 21:08:02,730 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-07 21:08:02,760 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-07 21:08:02,761 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-07 21:08:02,761 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-07 21:08:02,761 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-07 21:08:02,761 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-07 21:08:02,762 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-07 21:08:02,762 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-07 21:08:02,762 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-07 21:08:02,762 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-07 21:08:02,762 INFO L153 SettingsManager]: * Use SBE=true [2025-02-07 21:08:02,762 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-07 21:08:02,763 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-07 21:08:02,763 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-07 21:08:02,763 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-07 21:08:02,763 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-07 21:08:02,763 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-07 21:08:02,763 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-07 21:08:02,763 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-07 21:08:02,763 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-07 21:08:02,764 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-07 21:08:02,764 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-07 21:08:02,764 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-07 21:08:02,764 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-07 21:08:02,764 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-07 21:08:02,764 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-07 21:08:02,764 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-07 21:08:02,764 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-07 21:08:02,765 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 21:08:02,765 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-07 21:08:02,765 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-07 21:08:02,765 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-07 21:08:02,765 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-07 21:08:02,765 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-07 21:08:02,765 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-07 21:08:02,765 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-07 21:08:02,766 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-07 21:08:02,766 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-07 21:08:02,766 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-07 21:08:02,766 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-jdk21/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 [2025-02-07 21:08:03,015 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-07 21:08:03,022 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-07 21:08:03,024 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-07 21:08:03,025 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-07 21:08:03,025 INFO L274 PluginConnector]: CDTParser initialized [2025-02-07 21:08:03,026 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursified_loop-simple/recursified_nested_6.c [2025-02-07 21:08:04,277 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9548f136a/0e7521f6cbad465a840e24896a5d9154/FLAG37cda6cb4 [2025-02-07 21:08:04,528 INFO L384 CDTParser]: Found 1 translation units. [2025-02-07 21:08:04,528 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursified_loop-simple/recursified_nested_6.c [2025-02-07 21:08:04,534 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9548f136a/0e7521f6cbad465a840e24896a5d9154/FLAG37cda6cb4 [2025-02-07 21:08:04,546 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/9548f136a/0e7521f6cbad465a840e24896a5d9154 [2025-02-07 21:08:04,548 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-07 21:08:04,550 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-07 21:08:04,551 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-07 21:08:04,551 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-07 21:08:04,554 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-07 21:08:04,555 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 09:08:04" (1/1) ... [2025-02-07 21:08:04,555 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47f96762 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:08:04, skipping insertion in model container [2025-02-07 21:08:04,555 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 09:08:04" (1/1) ... [2025-02-07 21:08:04,568 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-07 21:08:04,693 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursified_loop-simple/recursified_nested_6.c[2667,2680] [2025-02-07 21:08:04,698 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 21:08:04,708 INFO L200 MainTranslator]: Completed pre-run [2025-02-07 21:08:04,727 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursified_loop-simple/recursified_nested_6.c[2667,2680] [2025-02-07 21:08:04,728 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 21:08:04,738 INFO L204 MainTranslator]: Completed translation [2025-02-07 21:08:04,739 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:08:04 WrapperNode [2025-02-07 21:08:04,739 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-07 21:08:04,740 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-07 21:08:04,740 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-07 21:08:04,740 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-07 21:08:04,745 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:08:04" (1/1) ... [2025-02-07 21:08:04,754 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:08:04" (1/1) ... [2025-02-07 21:08:04,770 INFO L138 Inliner]: procedures = 15, calls = 51, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 83 [2025-02-07 21:08:04,772 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-07 21:08:04,773 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-07 21:08:04,774 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-07 21:08:04,774 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-07 21:08:04,780 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:08:04" (1/1) ... [2025-02-07 21:08:04,780 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:08:04" (1/1) ... [2025-02-07 21:08:04,782 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:08:04" (1/1) ... [2025-02-07 21:08:04,798 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]. [2025-02-07 21:08:04,801 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:08:04" (1/1) ... [2025-02-07 21:08:04,803 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:08:04" (1/1) ... [2025-02-07 21:08:04,812 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:08:04" (1/1) ... [2025-02-07 21:08:04,813 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:08:04" (1/1) ... [2025-02-07 21:08:04,818 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:08:04" (1/1) ... [2025-02-07 21:08:04,819 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:08:04" (1/1) ... [2025-02-07 21:08:04,822 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-07 21:08:04,823 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-07 21:08:04,823 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-07 21:08:04,823 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-07 21:08:04,824 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:08:04" (1/1) ... [2025-02-07 21:08:04,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 21:08:04,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:08:04,849 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-07 21:08:04,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-07 21:08:04,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-07 21:08:04,874 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_28_to_28_0 [2025-02-07 21:08:04,874 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_28_to_28_0 [2025-02-07 21:08:04,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-07 21:08:04,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-07 21:08:04,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-07 21:08:04,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-07 21:08:04,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-02-07 21:08:04,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-07 21:08:04,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-07 21:08:04,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-07 21:08:04,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-07 21:08:04,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-02-07 21:08:04,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-02-07 21:08:04,876 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_25_to_26_0 [2025-02-07 21:08:04,876 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_25_to_26_0 [2025-02-07 21:08:04,876 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_27_to_28_0 [2025-02-07 21:08:04,876 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_27_to_28_0 [2025-02-07 21:08:04,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-07 21:08:04,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-07 21:08:04,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-07 21:08:04,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-07 21:08:04,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-07 21:08:04,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-02-07 21:08:04,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-02-07 21:08:04,876 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_26_to_27_0 [2025-02-07 21:08:04,876 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_26_to_27_0 [2025-02-07 21:08:04,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-07 21:08:04,962 INFO L257 CfgBuilder]: Building ICFG [2025-02-07 21:08:04,963 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-07 21:08:05,176 INFO L1324 $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; [2025-02-07 21:08:05,216 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2025-02-07 21:08:05,217 INFO L308 CfgBuilder]: Performing block encoding [2025-02-07 21:08:05,226 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-07 21:08:05,227 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-07 21:08:05,227 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 09:08:05 BoogieIcfgContainer [2025-02-07 21:08:05,228 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-07 21:08:05,230 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-07 21:08:05,230 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-07 21:08:05,234 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-07 21:08:05,234 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 09:08:04" (1/3) ... [2025-02-07 21:08:05,235 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29a2333f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 09:08:05, skipping insertion in model container [2025-02-07 21:08:05,235 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 09:08:04" (2/3) ... [2025-02-07 21:08:05,235 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29a2333f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 09:08:05, skipping insertion in model container [2025-02-07 21:08:05,235 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 09:08:05" (3/3) ... [2025-02-07 21:08:05,237 INFO L128 eAbstractionObserver]: Analyzing ICFG recursified_nested_6.c [2025-02-07 21:08:05,251 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-07 21:08:05,253 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG recursified_nested_6.c that has 5 procedures, 45 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-02-07 21:08:05,308 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-07 21:08:05,322 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;@f619f80, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-07 21:08:05,322 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-07 21:08:05,326 INFO L276 IsEmpty]: Start isEmpty. Operand has 45 states, 31 states have (on average 1.3870967741935485) internal successors, (43), 36 states have internal predecessors, (43), 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) [2025-02-07 21:08:05,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-02-07 21:08:05,333 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:08:05,333 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:08:05,334 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:08:05,338 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:08:05,339 INFO L85 PathProgramCache]: Analyzing trace with hash -112396446, now seen corresponding path program 1 times [2025-02-07 21:08:05,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:08:05,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014453911] [2025-02-07 21:08:05,349 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:08:05,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:08:05,434 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-07 21:08:05,461 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-07 21:08:05,461 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:08:05,461 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:08:05,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 21:08:05,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:08:05,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014453911] [2025-02-07 21:08:05,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014453911] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 21:08:05,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 21:08:05,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-07 21:08:05,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452297996] [2025-02-07 21:08:05,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 21:08:05,571 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-07 21:08:05,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:08:05,586 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-07 21:08:05,587 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-07 21:08:05,588 INFO L87 Difference]: Start difference. First operand has 45 states, 31 states have (on average 1.3870967741935485) internal successors, (43), 36 states have internal predecessors, (43), 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 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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) [2025-02-07 21:08:05,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:08:05,625 INFO L93 Difference]: Finished difference Result 63 states and 84 transitions. [2025-02-07 21:08:05,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-07 21:08:05,627 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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 11 [2025-02-07 21:08:05,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:08:05,632 INFO L225 Difference]: With dead ends: 63 [2025-02-07 21:08:05,632 INFO L226 Difference]: Without dead ends: 45 [2025-02-07 21:08:05,638 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-07 21:08:05,640 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 3 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 109 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 [2025-02-07 21:08:05,641 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 109 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 21:08:05,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2025-02-07 21:08:05,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2025-02-07 21:08:05,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 33 states have internal predecessors, (39), 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) [2025-02-07 21:08:05,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 55 transitions. [2025-02-07 21:08:05,676 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 55 transitions. Word has length 11 [2025-02-07 21:08:05,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:08:05,677 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 55 transitions. [2025-02-07 21:08:05,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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) [2025-02-07 21:08:05,677 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 55 transitions. [2025-02-07 21:08:05,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-02-07 21:08:05,680 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:08:05,680 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:08:05,681 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-07 21:08:05,681 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:08:05,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:08:05,682 INFO L85 PathProgramCache]: Analyzing trace with hash 878543614, now seen corresponding path program 1 times [2025-02-07 21:08:05,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:08:05,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718111425] [2025-02-07 21:08:05,682 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:08:05,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:08:05,695 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 13 statements into 1 equivalence classes. [2025-02-07 21:08:05,707 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 13 of 13 statements. [2025-02-07 21:08:05,707 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:08:05,707 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:08:05,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 21:08:05,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:08:05,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718111425] [2025-02-07 21:08:05,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718111425] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 21:08:05,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 21:08:05,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-07 21:08:05,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506130110] [2025-02-07 21:08:05,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 21:08:05,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-07 21:08:05,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:08:05,789 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-07 21:08:05,789 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-07 21:08:05,789 INFO L87 Difference]: Start difference. First operand 42 states and 55 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2025-02-07 21:08:05,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:08:05,825 INFO L93 Difference]: Finished difference Result 85 states and 113 transitions. [2025-02-07 21:08:05,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-07 21:08:05,827 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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 13 [2025-02-07 21:08:05,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:08:05,827 INFO L225 Difference]: With dead ends: 85 [2025-02-07 21:08:05,828 INFO L226 Difference]: Without dead ends: 45 [2025-02-07 21:08:05,828 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 [2025-02-07 21:08:05,829 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 1 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 100 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 [2025-02-07 21:08:05,829 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 100 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 21:08:05,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2025-02-07 21:08:05,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2025-02-07 21:08:05,840 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) [2025-02-07 21:08:05,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 56 transitions. [2025-02-07 21:08:05,842 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 56 transitions. Word has length 13 [2025-02-07 21:08:05,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:08:05,842 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 56 transitions. [2025-02-07 21:08:05,842 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2025-02-07 21:08:05,843 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 56 transitions. [2025-02-07 21:08:05,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2025-02-07 21:08:05,844 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:08:05,844 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] [2025-02-07 21:08:05,844 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-07 21:08:05,844 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:08:05,845 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:08:05,845 INFO L85 PathProgramCache]: Analyzing trace with hash 207442111, now seen corresponding path program 1 times [2025-02-07 21:08:05,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:08:05,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286061724] [2025-02-07 21:08:05,845 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:08:05,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:08:05,861 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 20 statements into 1 equivalence classes. [2025-02-07 21:08:05,880 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 20 of 20 statements. [2025-02-07 21:08:05,885 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:08:05,886 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:08:06,212 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 21:08:06,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:08:06,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286061724] [2025-02-07 21:08:06,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286061724] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 21:08:06,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 21:08:06,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-07 21:08:06,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388629219] [2025-02-07 21:08:06,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 21:08:06,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-07 21:08:06,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:08:06,214 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-07 21:08:06,214 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-07 21:08:06,214 INFO L87 Difference]: Start difference. First operand 43 states and 56 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-07 21:08:06,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:08:06,435 INFO L93 Difference]: Finished difference Result 86 states and 113 transitions. [2025-02-07 21:08:06,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-07 21:08:06,436 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2025-02-07 21:08:06,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:08:06,438 INFO L225 Difference]: With dead ends: 86 [2025-02-07 21:08:06,438 INFO L226 Difference]: Without dead ends: 45 [2025-02-07 21:08:06,438 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-02-07 21:08:06,439 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 21 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-07 21:08:06,439 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 78 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-07 21:08:06,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2025-02-07 21:08:06,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2025-02-07 21:08:06,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 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), 5 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2025-02-07 21:08:06,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 58 transitions. [2025-02-07 21:08:06,450 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 58 transitions. Word has length 20 [2025-02-07 21:08:06,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:08:06,450 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 58 transitions. [2025-02-07 21:08:06,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2025-02-07 21:08:06,452 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 58 transitions. [2025-02-07 21:08:06,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2025-02-07 21:08:06,454 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:08:06,454 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:08:06,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-07 21:08:06,454 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:08:06,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:08:06,456 INFO L85 PathProgramCache]: Analyzing trace with hash -288652141, now seen corresponding path program 1 times [2025-02-07 21:08:06,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:08:06,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938253395] [2025-02-07 21:08:06,457 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:08:06,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:08:06,476 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 31 statements into 1 equivalence classes. [2025-02-07 21:08:06,486 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 31 of 31 statements. [2025-02-07 21:08:06,486 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:08:06,487 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:08:06,700 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-07 21:08:06,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:08:06,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938253395] [2025-02-07 21:08:06,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938253395] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 21:08:06,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 21:08:06,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-07 21:08:06,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204375248] [2025-02-07 21:08:06,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 21:08:06,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-07 21:08:06,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:08:06,702 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-07 21:08:06,703 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-07 21:08:06,704 INFO L87 Difference]: Start difference. First operand 45 states and 58 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 1 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-07 21:08:06,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:08:06,847 INFO L93 Difference]: Finished difference Result 90 states and 119 transitions. [2025-02-07 21:08:06,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-07 21:08:06,847 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 1 states have call predecessors, (3), 3 states have call successors, (3) Word has length 31 [2025-02-07 21:08:06,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:08:06,848 INFO L225 Difference]: With dead ends: 90 [2025-02-07 21:08:06,848 INFO L226 Difference]: Without dead ends: 47 [2025-02-07 21:08:06,849 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-02-07 21:08:06,849 INFO L435 NwaCegarLoop]: 32 mSDtfsCounter, 17 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 21:08:06,850 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 127 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 21:08:06,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2025-02-07 21:08:06,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2025-02-07 21:08:06,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 32 states have (on average 1.3125) internal successors, (42), 36 states have internal predecessors, (42), 8 states have call successors, (8), 4 states have call predecessors, (8), 6 states have return successors, (10), 8 states have call predecessors, (10), 8 states have call successors, (10) [2025-02-07 21:08:06,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 60 transitions. [2025-02-07 21:08:06,856 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 60 transitions. Word has length 31 [2025-02-07 21:08:06,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:08:06,856 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 60 transitions. [2025-02-07 21:08:06,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 1 states have call predecessors, (3), 3 states have call successors, (3) [2025-02-07 21:08:06,856 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 60 transitions. [2025-02-07 21:08:06,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-02-07 21:08:06,857 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:08:06,857 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:08:06,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-07 21:08:06,858 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:08:06,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:08:06,858 INFO L85 PathProgramCache]: Analyzing trace with hash -701001859, now seen corresponding path program 1 times [2025-02-07 21:08:06,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:08:06,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856263956] [2025-02-07 21:08:06,859 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:08:06,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:08:06,875 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 42 statements into 1 equivalence classes. [2025-02-07 21:08:06,886 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 42 of 42 statements. [2025-02-07 21:08:06,886 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:08:06,886 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:08:07,097 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-07 21:08:07,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:08:07,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856263956] [2025-02-07 21:08:07,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856263956] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 21:08:07,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 21:08:07,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-07 21:08:07,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186058325] [2025-02-07 21:08:07,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 21:08:07,097 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-07 21:08:07,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:08:07,098 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-07 21:08:07,098 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-07 21:08:07,099 INFO L87 Difference]: Start difference. First operand 47 states and 60 transitions. Second operand has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 1 states have call predecessors, (5), 3 states have call successors, (5) [2025-02-07 21:08:07,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:08:07,212 INFO L93 Difference]: Finished difference Result 94 states and 125 transitions. [2025-02-07 21:08:07,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-07 21:08:07,213 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 1 states have call predecessors, (5), 3 states have call successors, (5) Word has length 42 [2025-02-07 21:08:07,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:08:07,214 INFO L225 Difference]: With dead ends: 94 [2025-02-07 21:08:07,214 INFO L226 Difference]: Without dead ends: 49 [2025-02-07 21:08:07,214 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-02-07 21:08:07,215 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 14 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 21:08:07,215 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 133 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 21:08:07,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2025-02-07 21:08:07,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2025-02-07 21:08:07,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 33 states have (on average 1.303030303030303) internal successors, (43), 37 states have internal predecessors, (43), 8 states have call successors, (8), 4 states have call predecessors, (8), 7 states have return successors, (11), 8 states have call predecessors, (11), 8 states have call successors, (11) [2025-02-07 21:08:07,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 62 transitions. [2025-02-07 21:08:07,225 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 62 transitions. Word has length 42 [2025-02-07 21:08:07,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:08:07,225 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 62 transitions. [2025-02-07 21:08:07,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (5), 1 states have call predecessors, (5), 3 states have call successors, (5) [2025-02-07 21:08:07,225 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 62 transitions. [2025-02-07 21:08:07,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2025-02-07 21:08:07,226 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:08:07,227 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:08:07,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-07 21:08:07,227 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:08:07,227 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:08:07,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1301077617, now seen corresponding path program 1 times [2025-02-07 21:08:07,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:08:07,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161803150] [2025-02-07 21:08:07,231 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:08:07,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:08:07,253 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 53 statements into 1 equivalence classes. [2025-02-07 21:08:07,264 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 53 of 53 statements. [2025-02-07 21:08:07,264 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:08:07,264 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:08:07,492 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-07 21:08:07,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:08:07,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161803150] [2025-02-07 21:08:07,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161803150] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 21:08:07,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 21:08:07,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-07 21:08:07,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640330442] [2025-02-07 21:08:07,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 21:08:07,492 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-07 21:08:07,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:08:07,493 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-07 21:08:07,493 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-07 21:08:07,493 INFO L87 Difference]: Start difference. First operand 49 states and 62 transitions. Second operand has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 1 states have call predecessors, (7), 3 states have call successors, (7) [2025-02-07 21:08:07,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:08:07,595 INFO L93 Difference]: Finished difference Result 98 states and 131 transitions. [2025-02-07 21:08:07,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-07 21:08:07,596 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 1 states have call predecessors, (7), 3 states have call successors, (7) Word has length 53 [2025-02-07 21:08:07,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:08:07,596 INFO L225 Difference]: With dead ends: 98 [2025-02-07 21:08:07,597 INFO L226 Difference]: Without dead ends: 51 [2025-02-07 21:08:07,597 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2025-02-07 21:08:07,598 INFO L435 NwaCegarLoop]: 49 mSDtfsCounter, 12 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 21:08:07,598 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 159 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 21:08:07,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2025-02-07 21:08:07,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2025-02-07 21:08:07,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 34 states have (on average 1.2941176470588236) internal successors, (44), 38 states have internal predecessors, (44), 8 states have call successors, (8), 4 states have call predecessors, (8), 8 states have return successors, (12), 8 states have call predecessors, (12), 8 states have call successors, (12) [2025-02-07 21:08:07,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 64 transitions. [2025-02-07 21:08:07,611 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 64 transitions. Word has length 53 [2025-02-07 21:08:07,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:08:07,611 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 64 transitions. [2025-02-07 21:08:07,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (7), 1 states have call predecessors, (7), 3 states have call successors, (7) [2025-02-07 21:08:07,611 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 64 transitions. [2025-02-07 21:08:07,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2025-02-07 21:08:07,612 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:08:07,612 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:08:07,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-02-07 21:08:07,612 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:08:07,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:08:07,615 INFO L85 PathProgramCache]: Analyzing trace with hash -419014504, now seen corresponding path program 1 times [2025-02-07 21:08:07,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:08:07,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396746505] [2025-02-07 21:08:07,615 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:08:07,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:08:07,634 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-02-07 21:08:07,650 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-02-07 21:08:07,650 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:08:07,650 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:08:07,721 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-07 21:08:07,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:08:07,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396746505] [2025-02-07 21:08:07,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396746505] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 21:08:07,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367299615] [2025-02-07 21:08:07,721 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 21:08:07,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:08:07,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:08:07,723 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 21:08:07,725 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-07 21:08:07,806 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 58 statements into 1 equivalence classes. [2025-02-07 21:08:07,865 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 58 of 58 statements. [2025-02-07 21:08:07,866 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:08:07,866 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:08:07,868 INFO L256 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-07 21:08:07,874 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 21:08:07,932 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-07 21:08:07,932 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 21:08:08,064 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2025-02-07 21:08:08,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367299615] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 21:08:08,064 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 21:08:08,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-02-07 21:08:08,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552211563] [2025-02-07 21:08:08,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 21:08:08,065 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-07 21:08:08,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:08:08,065 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-07 21:08:08,065 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-07 21:08:08,066 INFO L87 Difference]: Start difference. First operand 51 states and 64 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2025-02-07 21:08:08,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:08:08,120 INFO L93 Difference]: Finished difference Result 109 states and 141 transitions. [2025-02-07 21:08:08,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-07 21:08:08,120 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 58 [2025-02-07 21:08:08,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:08:08,123 INFO L225 Difference]: With dead ends: 109 [2025-02-07 21:08:08,123 INFO L226 Difference]: Without dead ends: 60 [2025-02-07 21:08:08,123 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-07 21:08:08,126 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 2 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 21:08:08,126 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 146 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 21:08:08,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2025-02-07 21:08:08,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2025-02-07 21:08:08,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 40 states have (on average 1.25) internal successors, (50), 44 states have internal predecessors, (50), 11 states have call successors, (11), 4 states have call predecessors, (11), 8 states have return successors, (15), 11 states have call predecessors, (15), 11 states have call successors, (15) [2025-02-07 21:08:08,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 76 transitions. [2025-02-07 21:08:08,139 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 76 transitions. Word has length 58 [2025-02-07 21:08:08,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:08:08,140 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 76 transitions. [2025-02-07 21:08:08,141 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2025-02-07 21:08:08,142 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 76 transitions. [2025-02-07 21:08:08,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2025-02-07 21:08:08,148 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:08:08,148 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:08:08,155 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-07 21:08:08,349 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:08:08,349 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:08:08,350 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:08:08,350 INFO L85 PathProgramCache]: Analyzing trace with hash 789567358, now seen corresponding path program 2 times [2025-02-07 21:08:08,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:08:08,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503876969] [2025-02-07 21:08:08,350 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 21:08:08,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:08:08,396 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 193 statements into 2 equivalence classes. [2025-02-07 21:08:08,421 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 193 of 193 statements. [2025-02-07 21:08:08,421 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 21:08:08,421 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:08:09,472 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 50 proven. 67 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2025-02-07 21:08:09,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:08:09,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503876969] [2025-02-07 21:08:09,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503876969] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 21:08:09,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432895059] [2025-02-07 21:08:09,475 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 21:08:09,475 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:08:09,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:08:09,478 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 21:08:09,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-07 21:08:09,623 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 193 statements into 2 equivalence classes. [2025-02-07 21:08:09,792 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 193 of 193 statements. [2025-02-07 21:08:09,792 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 21:08:09,792 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:08:09,798 INFO L256 TraceCheckSpWp]: Trace formula consists of 1204 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-07 21:08:09,810 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 21:08:09,914 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2025-02-07 21:08:09,914 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 21:08:10,330 INFO L134 CoverageAnalysis]: Checked inductivity of 531 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2025-02-07 21:08:10,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432895059] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 21:08:10,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 21:08:10,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 15 [2025-02-07 21:08:10,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107015823] [2025-02-07 21:08:10,331 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 21:08:10,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-07 21:08:10,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:08:10,332 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-07 21:08:10,332 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2025-02-07 21:08:10,332 INFO L87 Difference]: Start difference. First operand 60 states and 76 transitions. Second operand has 15 states, 13 states have (on average 4.769230769230769) internal successors, (62), 14 states have internal predecessors, (62), 10 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (21), 9 states have call predecessors, (21), 10 states have call successors, (21) [2025-02-07 21:08:10,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:08:10,574 INFO L93 Difference]: Finished difference Result 126 states and 172 transitions. [2025-02-07 21:08:10,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-07 21:08:10,575 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 4.769230769230769) internal successors, (62), 14 states have internal predecessors, (62), 10 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (21), 9 states have call predecessors, (21), 10 states have call successors, (21) Word has length 193 [2025-02-07 21:08:10,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:08:10,576 INFO L225 Difference]: With dead ends: 126 [2025-02-07 21:08:10,576 INFO L226 Difference]: Without dead ends: 68 [2025-02-07 21:08:10,576 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 377 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2025-02-07 21:08:10,577 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 19 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-07 21:08:10,577 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 257 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-07 21:08:10,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2025-02-07 21:08:10,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2025-02-07 21:08:10,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 45 states have (on average 1.2222222222222223) internal successors, (55), 49 states have internal predecessors, (55), 13 states have call successors, (13), 4 states have call predecessors, (13), 9 states have return successors, (18), 14 states have call predecessors, (18), 13 states have call successors, (18) [2025-02-07 21:08:10,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 86 transitions. [2025-02-07 21:08:10,585 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 86 transitions. Word has length 193 [2025-02-07 21:08:10,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:08:10,585 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 86 transitions. [2025-02-07 21:08:10,585 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 4.769230769230769) internal successors, (62), 14 states have internal predecessors, (62), 10 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (21), 9 states have call predecessors, (21), 10 states have call successors, (21) [2025-02-07 21:08:10,586 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 86 transitions. [2025-02-07 21:08:10,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2025-02-07 21:08:10,588 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:08:10,591 INFO L218 NwaCegarLoop]: trace histogram [24, 24, 18, 18, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 6, 6, 6, 6, 6, 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] [2025-02-07 21:08:10,601 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-07 21:08:10,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:08:10,793 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:08:10,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:08:10,793 INFO L85 PathProgramCache]: Analyzing trace with hash 589801310, now seen corresponding path program 3 times [2025-02-07 21:08:10,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:08:10,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552005748] [2025-02-07 21:08:10,794 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 21:08:10,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:08:10,848 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 379 statements into 13 equivalence classes. [2025-02-07 21:08:10,855 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 13 of 379 statements. [2025-02-07 21:08:10,855 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-07 21:08:10,855 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:08:10,882 INFO L134 CoverageAnalysis]: Checked inductivity of 2650 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2649 trivial. 0 not checked. [2025-02-07 21:08:10,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:08:10,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552005748] [2025-02-07 21:08:10,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552005748] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 21:08:10,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603246654] [2025-02-07 21:08:10,883 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 21:08:10,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:08:10,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:08:10,885 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 21:08:10,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-07 21:08:11,091 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 379 statements into 13 equivalence classes. [2025-02-07 21:08:11,108 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 13 of 379 statements. [2025-02-07 21:08:11,108 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-07 21:08:11,108 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:08:11,110 INFO L256 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-07 21:08:11,120 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 21:08:11,186 INFO L134 CoverageAnalysis]: Checked inductivity of 2650 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2649 trivial. 0 not checked. [2025-02-07 21:08:11,186 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 21:08:12,015 INFO L134 CoverageAnalysis]: Checked inductivity of 2650 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2649 trivial. 0 not checked. [2025-02-07 21:08:12,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603246654] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 21:08:12,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 21:08:12,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-02-07 21:08:12,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943954066] [2025-02-07 21:08:12,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 21:08:12,016 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-07 21:08:12,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:08:12,017 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-07 21:08:12,017 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-07 21:08:12,017 INFO L87 Difference]: Start difference. First operand 68 states and 86 transitions. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 4 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2025-02-07 21:08:12,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:08:12,058 INFO L93 Difference]: Finished difference Result 138 states and 183 transitions. [2025-02-07 21:08:12,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-07 21:08:12,059 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 4 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 379 [2025-02-07 21:08:12,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:08:12,061 INFO L225 Difference]: With dead ends: 138 [2025-02-07 21:08:12,061 INFO L226 Difference]: Without dead ends: 128 [2025-02-07 21:08:12,061 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 759 GetRequests, 754 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-07 21:08:12,062 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 6 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 21:08:12,062 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 107 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 21:08:12,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2025-02-07 21:08:12,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2025-02-07 21:08:12,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 87 states have (on average 1.1494252873563218) internal successors, (100), 91 states have internal predecessors, (100), 31 states have call successors, (31), 4 states have call predecessors, (31), 9 states have return successors, (36), 32 states have call predecessors, (36), 31 states have call successors, (36) [2025-02-07 21:08:12,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 167 transitions. [2025-02-07 21:08:12,092 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 167 transitions. Word has length 379 [2025-02-07 21:08:12,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:08:12,093 INFO L471 AbstractCegarLoop]: Abstraction has 128 states and 167 transitions. [2025-02-07 21:08:12,093 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 4 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2025-02-07 21:08:12,093 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 167 transitions. [2025-02-07 21:08:12,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1484 [2025-02-07 21:08:12,142 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:08:12,142 INFO L218 NwaCegarLoop]: trace histogram [96, 96, 72, 72, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 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] [2025-02-07 21:08:12,150 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-07 21:08:12,343 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:08:12,343 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:08:12,344 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:08:12,344 INFO L85 PathProgramCache]: Analyzing trace with hash -913242286, now seen corresponding path program 4 times [2025-02-07 21:08:12,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:08:12,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796034931] [2025-02-07 21:08:12,344 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 21:08:12,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:08:12,502 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 1483 statements into 2 equivalence classes. [2025-02-07 21:08:12,527 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 1482 of 1483 statements. [2025-02-07 21:08:12,528 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-07 21:08:12,528 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:08:18,023 INFO L134 CoverageAnalysis]: Checked inductivity of 44596 backedges. 226 proven. 402 refuted. 0 times theorem prover too weak. 43968 trivial. 0 not checked. [2025-02-07 21:08:18,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:08:18,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796034931] [2025-02-07 21:08:18,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796034931] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 21:08:18,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123613249] [2025-02-07 21:08:18,024 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 21:08:18,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:08:18,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:08:18,027 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 21:08:18,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-07 21:08:18,600 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 1483 statements into 2 equivalence classes. [2025-02-07 21:08:19,565 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 1482 of 1483 statements. [2025-02-07 21:08:19,565 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-07 21:08:19,565 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:08:19,594 INFO L256 TraceCheckSpWp]: Trace formula consists of 8257 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-02-07 21:08:19,624 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 21:08:19,669 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 [2025-02-07 21:08:19,909 INFO L134 CoverageAnalysis]: Checked inductivity of 44596 backedges. 12393 proven. 3 refuted. 0 times theorem prover too weak. 32200 trivial. 0 not checked. [2025-02-07 21:08:19,909 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 21:08:22,921 INFO L134 CoverageAnalysis]: Checked inductivity of 44596 backedges. 323 proven. 524 refuted. 0 times theorem prover too weak. 43749 trivial. 0 not checked. [2025-02-07 21:08:22,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123613249] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 21:08:22,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 21:08:22,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 25 [2025-02-07 21:08:22,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922688516] [2025-02-07 21:08:22,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 21:08:22,924 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-07 21:08:22,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:08:22,925 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-07 21:08:22,925 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=513, Unknown=0, NotChecked=0, Total=600 [2025-02-07 21:08:22,926 INFO L87 Difference]: Start difference. First operand 128 states and 167 transitions. Second operand has 25 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 21 states have internal predecessors, (81), 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) [2025-02-07 21:08:23,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:08:23,440 INFO L93 Difference]: Finished difference Result 256 states and 383 transitions. [2025-02-07 21:08:23,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-07 21:08:23,441 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 21 states have internal predecessors, (81), 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 1483 [2025-02-07 21:08:23,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:08:23,443 INFO L225 Difference]: With dead ends: 256 [2025-02-07 21:08:23,443 INFO L226 Difference]: Without dead ends: 132 [2025-02-07 21:08:23,445 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2986 GetRequests, 2951 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=203, Invalid=1129, Unknown=0, NotChecked=0, Total=1332 [2025-02-07 21:08:23,445 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 54 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-07 21:08:23,445 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 261 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-07 21:08:23,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2025-02-07 21:08:23,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2025-02-07 21:08:23,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 89 states have (on average 1.146067415730337) internal successors, (102), 93 states have internal predecessors, (102), 31 states have call successors, (31), 4 states have call predecessors, (31), 11 states have return successors, (38), 34 states have call predecessors, (38), 31 states have call successors, (38) [2025-02-07 21:08:23,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 171 transitions. [2025-02-07 21:08:23,464 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 171 transitions. Word has length 1483 [2025-02-07 21:08:23,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:08:23,464 INFO L471 AbstractCegarLoop]: Abstraction has 132 states and 171 transitions. [2025-02-07 21:08:23,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 19 states have (on average 4.2631578947368425) internal successors, (81), 21 states have internal predecessors, (81), 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) [2025-02-07 21:08:23,465 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 171 transitions. [2025-02-07 21:08:23,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4844 [2025-02-07 21:08:23,604 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:08:23,605 INFO L218 NwaCegarLoop]: trace histogram [384, 384, 288, 288, 192, 192, 192, 192, 192, 192, 192, 192, 192, 192, 144, 144, 96, 96, 96, 96, 96, 96, 96, 72, 72, 48, 48, 48, 48, 48, 48, 48, 24, 24, 24, 24, 24, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:08:23,620 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-07 21:08:23,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-02-07 21:08:23,806 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:08:23,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:08:23,807 INFO L85 PathProgramCache]: Analyzing trace with hash -167400878, now seen corresponding path program 5 times [2025-02-07 21:08:23,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:08:23,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [765608537] [2025-02-07 21:08:23,808 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-07 21:08:23,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:08:24,199 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 4843 statements into 200 equivalence classes. [2025-02-07 21:08:24,201 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 4843 statements. [2025-02-07 21:08:24,201 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 21:08:24,201 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:08:24,426 INFO L134 CoverageAnalysis]: Checked inductivity of 602212 backedges. 349 proven. 4883 refuted. 0 times theorem prover too weak. 596980 trivial. 0 not checked. [2025-02-07 21:08:24,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:08:24,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [765608537] [2025-02-07 21:08:24,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [765608537] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 21:08:24,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697386421] [2025-02-07 21:08:24,427 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-07 21:08:24,427 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:08:24,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:08:24,430 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 21:08:24,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-07 21:08:26,091 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 4843 statements into 200 equivalence classes. [2025-02-07 21:08:26,107 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 31 of 4843 statements. [2025-02-07 21:08:26,107 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 21:08:26,107 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:08:26,124 INFO L256 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-02-07 21:08:26,192 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 21:08:26,202 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 [2025-02-07 21:08:26,391 INFO L134 CoverageAnalysis]: Checked inductivity of 602212 backedges. 52673 proven. 3 refuted. 0 times theorem prover too weak. 549536 trivial. 0 not checked. [2025-02-07 21:08:26,391 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 21:08:36,754 INFO L134 CoverageAnalysis]: Checked inductivity of 602212 backedges. 349 proven. 4884 refuted. 0 times theorem prover too weak. 596979 trivial. 0 not checked. [2025-02-07 21:08:36,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697386421] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 21:08:36,755 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 21:08:36,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 21 [2025-02-07 21:08:36,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220307339] [2025-02-07 21:08:36,756 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 21:08:36,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2025-02-07 21:08:36,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:08:36,762 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2025-02-07 21:08:36,763 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2025-02-07 21:08:36,763 INFO L87 Difference]: Start difference. First operand 132 states and 171 transitions. Second operand has 21 states, 16 states have (on average 4.6875) internal successors, (75), 18 states have internal predecessors, (75), 7 states have call successors, (25), 5 states have call predecessors, (25), 7 states have return successors, (29), 5 states have call predecessors, (29), 7 states have call successors, (29) [2025-02-07 21:08:36,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:08:36,976 INFO L93 Difference]: Finished difference Result 264 states and 375 transitions. [2025-02-07 21:08:36,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-02-07 21:08:36,976 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 4.6875) internal successors, (75), 18 states have internal predecessors, (75), 7 states have call successors, (25), 5 states have call predecessors, (25), 7 states have return successors, (29), 5 states have call predecessors, (29), 7 states have call successors, (29) Word has length 4843 [2025-02-07 21:08:36,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:08:36,977 INFO L225 Difference]: With dead ends: 264 [2025-02-07 21:08:36,978 INFO L226 Difference]: Without dead ends: 136 [2025-02-07 21:08:36,979 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9699 GetRequests, 9675 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650 [2025-02-07 21:08:36,979 INFO L435 NwaCegarLoop]: 50 mSDtfsCounter, 40 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 21:08:36,979 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 468 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 21:08:36,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2025-02-07 21:08:36,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2025-02-07 21:08:36,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 91 states have (on average 1.1428571428571428) internal successors, (104), 95 states have internal predecessors, (104), 31 states have call successors, (31), 4 states have call predecessors, (31), 13 states have return successors, (40), 36 states have call predecessors, (40), 31 states have call successors, (40) [2025-02-07 21:08:36,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 175 transitions. [2025-02-07 21:08:36,992 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 175 transitions. Word has length 4843 [2025-02-07 21:08:36,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:08:36,992 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 175 transitions. [2025-02-07 21:08:36,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 4.6875) internal successors, (75), 18 states have internal predecessors, (75), 7 states have call successors, (25), 5 states have call predecessors, (25), 7 states have return successors, (29), 5 states have call predecessors, (29), 7 states have call successors, (29) [2025-02-07 21:08:36,993 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 175 transitions. [2025-02-07 21:08:37,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6764 [2025-02-07 21:08:37,291 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:08:37,292 INFO L218 NwaCegarLoop]: trace histogram [768, 768, 576, 576, 576, 288, 288, 192, 192, 192, 192, 192, 192, 192, 144, 144, 96, 96, 96, 96, 96, 96, 96, 72, 72, 48, 48, 48, 48, 48, 48, 48, 24, 24, 24, 24, 24, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:08:37,300 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-07 21:08:37,493 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-02-07 21:08:37,494 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:08:37,495 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:08:37,495 INFO L85 PathProgramCache]: Analyzing trace with hash -703663534, now seen corresponding path program 6 times [2025-02-07 21:08:37,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:08:37,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94114827] [2025-02-07 21:08:37,496 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-07 21:08:37,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:08:37,971 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 6763 statements into 282 equivalence classes. [2025-02-07 21:08:38,031 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) and asserted 169 of 6763 statements. [2025-02-07 21:08:38,031 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2025-02-07 21:08:38,031 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:08:39,031 INFO L134 CoverageAnalysis]: Checked inductivity of 1633444 backedges. 801 proven. 15144 refuted. 0 times theorem prover too weak. 1617499 trivial. 0 not checked. [2025-02-07 21:08:39,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:08:39,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [94114827] [2025-02-07 21:08:39,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [94114827] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 21:08:39,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [755455838] [2025-02-07 21:08:39,032 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-07 21:08:39,033 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:08:39,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:08:39,035 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 21:08:39,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-07 21:08:40,890 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 6763 statements into 282 equivalence classes. [2025-02-07 21:08:41,224 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) and asserted 169 of 6763 statements. [2025-02-07 21:08:41,224 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2025-02-07 21:08:41,224 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:08:41,245 INFO L256 TraceCheckSpWp]: Trace formula consists of 800 conjuncts, 52 conjuncts are in the unsatisfiable core [2025-02-07 21:08:41,330 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 21:08:41,340 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 [2025-02-07 21:08:41,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1633444 backedges. 145353 proven. 15 refuted. 0 times theorem prover too weak. 1488076 trivial. 0 not checked. [2025-02-07 21:08:41,788 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 21:08:58,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1633444 backedges. 797 proven. 15155 refuted. 0 times theorem prover too weak. 1617492 trivial. 0 not checked. [2025-02-07 21:08:58,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [755455838] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 21:08:58,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 21:08:58,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 18] total 33 [2025-02-07 21:08:58,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237478408] [2025-02-07 21:08:58,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 21:08:58,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-02-07 21:08:58,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 21:08:58,961 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-02-07 21:08:58,961 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=217, Invalid=839, Unknown=0, NotChecked=0, Total=1056 [2025-02-07 21:08:58,962 INFO L87 Difference]: Start difference. First operand 136 states and 175 transitions. Second operand has 33 states, 25 states have (on average 3.44) internal successors, (86), 28 states have internal predecessors, (86), 10 states have call successors, (28), 7 states have call predecessors, (28), 11 states have return successors, (35), 9 states have call predecessors, (35), 10 states have call successors, (35) [2025-02-07 21:08:59,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 21:08:59,309 INFO L93 Difference]: Finished difference Result 272 states and 383 transitions. [2025-02-07 21:08:59,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-07 21:08:59,310 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 25 states have (on average 3.44) internal successors, (86), 28 states have internal predecessors, (86), 10 states have call successors, (28), 7 states have call predecessors, (28), 11 states have return successors, (35), 9 states have call predecessors, (35), 10 states have call successors, (35) Word has length 6763 [2025-02-07 21:08:59,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 21:08:59,311 INFO L225 Difference]: With dead ends: 272 [2025-02-07 21:08:59,311 INFO L226 Difference]: Without dead ends: 140 [2025-02-07 21:08:59,313 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13548 GetRequests, 13509 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 555 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=298, Invalid=1184, Unknown=0, NotChecked=0, Total=1482 [2025-02-07 21:08:59,313 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 42 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-07 21:08:59,313 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 550 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-07 21:08:59,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2025-02-07 21:08:59,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2025-02-07 21:08:59,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 93 states have (on average 1.1397849462365592) internal successors, (106), 97 states have internal predecessors, (106), 31 states have call successors, (31), 4 states have call predecessors, (31), 15 states have return successors, (42), 38 states have call predecessors, (42), 31 states have call successors, (42) [2025-02-07 21:08:59,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 179 transitions. [2025-02-07 21:08:59,336 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 179 transitions. Word has length 6763 [2025-02-07 21:08:59,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 21:08:59,338 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 179 transitions. [2025-02-07 21:08:59,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 25 states have (on average 3.44) internal successors, (86), 28 states have internal predecessors, (86), 10 states have call successors, (28), 7 states have call predecessors, (28), 11 states have return successors, (35), 9 states have call predecessors, (35), 10 states have call successors, (35) [2025-02-07 21:08:59,338 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 179 transitions. [2025-02-07 21:08:59,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8684 [2025-02-07 21:08:59,724 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 21:08:59,726 INFO L218 NwaCegarLoop]: trace histogram [1152, 1152, 960, 960, 960, 288, 288, 192, 192, 192, 192, 192, 192, 192, 144, 144, 96, 96, 96, 96, 96, 96, 96, 72, 72, 48, 48, 48, 48, 48, 48, 48, 24, 24, 24, 24, 24, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 21:08:59,738 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-07 21:08:59,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-02-07 21:08:59,927 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 21:08:59,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 21:08:59,930 INFO L85 PathProgramCache]: Analyzing trace with hash -877118894, now seen corresponding path program 7 times [2025-02-07 21:08:59,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 21:08:59,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501745755] [2025-02-07 21:08:59,930 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-07 21:08:59,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 21:09:00,427 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8683 statements into 1 equivalence classes. [2025-02-07 21:09:02,077 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8683 of 8683 statements. [2025-02-07 21:09:02,077 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 21:09:02,077 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 21:09:21,708 INFO L134 CoverageAnalysis]: Checked inductivity of 3401956 backedges. 0 proven. 736 refuted. 0 times theorem prover too weak. 3401220 trivial. 0 not checked. [2025-02-07 21:09:21,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 21:09:21,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501745755] [2025-02-07 21:09:21,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501745755] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 21:09:21,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1572237366] [2025-02-07 21:09:21,709 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-07 21:09:21,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 21:09:21,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 21:09:21,711 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 21:09:21,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-07 21:09:24,185 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8683 statements into 1 equivalence classes.