./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/recursified_loop-simple/recursified_nested_5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c00e63dc 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_5.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 c9dfd2bf12e8d041fe6d1d6bf651e6b1ba93f167a26b0485680374a443f598c5 --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 16:01:36,067 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 16:01:36,115 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 16:01:36,121 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 16:01:36,121 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 16:01:36,144 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 16:01:36,145 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 16:01:36,148 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 16:01:36,149 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 16:01:36,149 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 16:01:36,149 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 16:01:36,149 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 16:01:36,150 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 16:01:36,150 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 16:01:36,150 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 16:01:36,150 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 16:01:36,150 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 16:01:36,150 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 16:01:36,150 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 16:01:36,150 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 16:01:36,150 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 16:01:36,150 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 16:01:36,150 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 16:01:36,150 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 16:01:36,150 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 16:01:36,150 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 16:01:36,150 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 16:01:36,151 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 16:01:36,151 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 16:01:36,151 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 16:01:36,151 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 16:01:36,151 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 16:01:36,151 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 16:01:36,151 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 16:01:36,151 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 16:01:36,151 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 16:01:36,151 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 16:01:36,151 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 16:01:36,151 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 16:01:36,151 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 16:01:36,151 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 16:01:36,151 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 16:01:36,151 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 16:01:36,151 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 -> c9dfd2bf12e8d041fe6d1d6bf651e6b1ba93f167a26b0485680374a443f598c5 [2025-02-05 16:01:36,370 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 16:01:36,385 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 16:01:36,388 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 16:01:36,388 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 16:01:36,389 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 16:01:36,390 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/recursified_loop-simple/recursified_nested_5.c [2025-02-05 16:01:37,591 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e744f78f0/56472ab5fef44a50a7dd5236da1a3b2a/FLAG4b41ec75c [2025-02-05 16:01:37,868 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 16:01:37,869 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/recursified_loop-simple/recursified_nested_5.c [2025-02-05 16:01:37,875 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e744f78f0/56472ab5fef44a50a7dd5236da1a3b2a/FLAG4b41ec75c [2025-02-05 16:01:37,903 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/e744f78f0/56472ab5fef44a50a7dd5236da1a3b2a [2025-02-05 16:01:37,906 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 16:01:37,908 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 16:01:37,910 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 16:01:37,911 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 16:01:37,915 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 16:01:37,919 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 04:01:37" (1/1) ... [2025-02-05 16:01:37,919 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c442006 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:01:37, skipping insertion in model container [2025-02-05 16:01:37,920 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 04:01:37" (1/1) ... [2025-02-05 16:01:37,948 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 16:01:38,071 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_5.c[2721,2734] [2025-02-05 16:01:38,074 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 16:01:38,080 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 16:01:38,097 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_5.c[2721,2734] [2025-02-05 16:01:38,102 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 16:01:38,116 INFO L204 MainTranslator]: Completed translation [2025-02-05 16:01:38,117 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:01:38 WrapperNode [2025-02-05 16:01:38,117 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 16:01:38,118 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 16:01:38,119 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 16:01:38,119 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 16:01:38,123 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:01:38" (1/1) ... [2025-02-05 16:01:38,129 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:01:38" (1/1) ... [2025-02-05 16:01:38,143 INFO L138 Inliner]: procedures = 16, calls = 62, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 80 [2025-02-05 16:01:38,144 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 16:01:38,145 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 16:01:38,146 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 16:01:38,146 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 16:01:38,152 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:01:38" (1/1) ... [2025-02-05 16:01:38,152 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:01:38" (1/1) ... [2025-02-05 16:01:38,154 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:01:38" (1/1) ... [2025-02-05 16:01:38,177 INFO L175 MemorySlicer]: Split 32 memory accesses to 6 slices as follows [2, 6, 6, 6, 6, 6]. 19 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 1, 1, 1, 1, 1]. The 10 writes are split as follows [0, 2, 2, 2, 2, 2]. [2025-02-05 16:01:38,177 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:01:38" (1/1) ... [2025-02-05 16:01:38,177 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:01:38" (1/1) ... [2025-02-05 16:01:38,184 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:01:38" (1/1) ... [2025-02-05 16:01:38,185 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:01:38" (1/1) ... [2025-02-05 16:01:38,190 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:01:38" (1/1) ... [2025-02-05 16:01:38,190 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:01:38" (1/1) ... [2025-02-05 16:01:38,192 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 16:01:38,193 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 16:01:38,193 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 16:01:38,193 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 16:01:38,196 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:01:38" (1/1) ... [2025-02-05 16:01:38,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 16:01:38,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:01:38,217 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) [2025-02-05 16:01:38,221 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 [2025-02-05 16:01:38,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 16:01:38,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 16:01:38,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-05 16:01:38,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-05 16:01:38,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-05 16:01:38,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2025-02-05 16:01:38,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2025-02-05 16:01:38,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-05 16:01:38,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-05 16:01:38,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-05 16:01:38,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-05 16:01:38,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-02-05 16:01:38,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2025-02-05 16:01:38,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2025-02-05 16:01:38,235 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_24_to_25_0 [2025-02-05 16:01:38,235 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_24_to_25_0 [2025-02-05 16:01:38,235 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_23_to_24_0 [2025-02-05 16:01:38,235 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_23_to_24_0 [2025-02-05 16:01:38,235 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_25_to_26_0 [2025-02-05 16:01:38,235 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_25_to_26_0 [2025-02-05 16:01:38,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 16:01:38,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 16:01:38,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-05 16:01:38,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-05 16:01:38,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-05 16:01:38,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-02-05 16:01:38,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2025-02-05 16:01:38,236 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2025-02-05 16:01:38,236 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_27_to_27_0 [2025-02-05 16:01:38,236 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_27_to_27_0 [2025-02-05 16:01:38,236 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_26_to_27_0 [2025-02-05 16:01:38,236 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_26_to_27_0 [2025-02-05 16:01:38,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-05 16:01:38,308 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 16:01:38,309 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 16:01:38,460 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L121: call ULTIMATE.dealloc(main_~#a~0#1.base, main_~#a~0#1.offset);havoc main_~#a~0#1.base, main_~#a~0#1.offset;call ULTIMATE.dealloc(main_~#b~0#1.base, main_~#b~0#1.offset);havoc main_~#b~0#1.base, main_~#b~0#1.offset;call ULTIMATE.dealloc(main_~#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; [2025-02-05 16:01:38,473 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2025-02-05 16:01:38,473 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 16:01:38,479 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 16:01:38,480 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 16:01:38,480 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 04:01:38 BoogieIcfgContainer [2025-02-05 16:01:38,480 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 16:01:38,481 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 16:01:38,481 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 16:01:38,484 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 16:01:38,484 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 04:01:37" (1/3) ... [2025-02-05 16:01:38,484 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d202b59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 04:01:38, skipping insertion in model container [2025-02-05 16:01:38,485 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 04:01:38" (2/3) ... [2025-02-05 16:01:38,485 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d202b59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 04:01:38, skipping insertion in model container [2025-02-05 16:01:38,485 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 04:01:38" (3/3) ... [2025-02-05 16:01:38,486 INFO L128 eAbstractionObserver]: Analyzing ICFG recursified_nested_5.c [2025-02-05 16:01:38,494 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 16:01:38,495 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG recursified_nested_5.c that has 6 procedures, 51 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2025-02-05 16:01:38,524 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 16:01:38,530 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;@9cacec6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 16:01:38,531 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 16:01:38,533 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 40 states have internal predecessors, (45), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2025-02-05 16:01:38,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2025-02-05 16:01:38,537 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:01:38,537 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:01:38,538 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:01:38,540 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:01:38,541 INFO L85 PathProgramCache]: Analyzing trace with hash 721021390, now seen corresponding path program 1 times [2025-02-05 16:01:38,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:01:38,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913965115] [2025-02-05 16:01:38,546 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:01:38,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:01:38,599 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 17 statements into 1 equivalence classes. [2025-02-05 16:01:38,621 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 17 of 17 statements. [2025-02-05 16:01:38,621 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:01:38,621 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:01:38,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 16:01:38,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:01:38,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913965115] [2025-02-05 16:01:38,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913965115] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:01:38,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:01:38,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 16:01:38,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795281142] [2025-02-05 16:01:38,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:01:38,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 16:01:38,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:01:38,973 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 16:01:38,974 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:01:38,976 INFO L87 Difference]: Start difference. First operand has 51 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 40 states have internal predecessors, (45), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2025-02-05 16:01:39,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:01:39,156 INFO L93 Difference]: Finished difference Result 68 states and 87 transitions. [2025-02-05 16:01:39,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 16:01:39,158 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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 17 [2025-02-05 16:01:39,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:01:39,162 INFO L225 Difference]: With dead ends: 68 [2025-02-05 16:01:39,162 INFO L226 Difference]: Without dead ends: 49 [2025-02-05 16:01:39,163 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 [2025-02-05 16:01:39,165 INFO L435 NwaCegarLoop]: 25 mSDtfsCounter, 28 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 16:01:39,165 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 83 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 16:01:39,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2025-02-05 16:01:39,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2025-02-05 16:01:39,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 32 states have (on average 1.28125) internal successors, (41), 37 states have internal predecessors, (41), 10 states have call successors, (10), 5 states have call predecessors, (10), 6 states have return successors, (11), 10 states have call predecessors, (11), 10 states have call successors, (11) [2025-02-05 16:01:39,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 62 transitions. [2025-02-05 16:01:39,197 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 62 transitions. Word has length 17 [2025-02-05 16:01:39,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:01:39,198 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 62 transitions. [2025-02-05 16:01:39,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 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) [2025-02-05 16:01:39,198 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 62 transitions. [2025-02-05 16:01:39,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-02-05 16:01:39,199 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:01:39,199 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] [2025-02-05 16:01:39,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-05 16:01:39,200 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:01:39,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:01:39,200 INFO L85 PathProgramCache]: Analyzing trace with hash 307057946, now seen corresponding path program 1 times [2025-02-05 16:01:39,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:01:39,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217355678] [2025-02-05 16:01:39,200 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:01:39,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:01:39,212 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-02-05 16:01:39,216 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-02-05 16:01:39,217 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:01:39,217 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:01:39,360 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-05 16:01:39,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:01:39,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217355678] [2025-02-05 16:01:39,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217355678] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:01:39,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:01:39,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 16:01:39,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187385255] [2025-02-05 16:01:39,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:01:39,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 16:01:39,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:01:39,362 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 16:01:39,362 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:01:39,362 INFO L87 Difference]: Start difference. First operand 49 states and 62 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 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) [2025-02-05 16:01:39,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:01:39,521 INFO L93 Difference]: Finished difference Result 97 states and 125 transitions. [2025-02-05 16:01:39,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 16:01:39,521 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 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 28 [2025-02-05 16:01:39,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:01:39,522 INFO L225 Difference]: With dead ends: 97 [2025-02-05 16:01:39,522 INFO L226 Difference]: Without dead ends: 51 [2025-02-05 16:01:39,523 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 [2025-02-05 16:01:39,523 INFO L435 NwaCegarLoop]: 29 mSDtfsCounter, 24 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 16:01:39,524 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 94 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 16:01:39,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2025-02-05 16:01:39,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2025-02-05 16:01:39,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 38 states have internal predecessors, (42), 10 states have call successors, (10), 5 states have call predecessors, (10), 7 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2025-02-05 16:01:39,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 64 transitions. [2025-02-05 16:01:39,529 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 64 transitions. Word has length 28 [2025-02-05 16:01:39,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:01:39,529 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 64 transitions. [2025-02-05 16:01:39,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 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) [2025-02-05 16:01:39,530 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 64 transitions. [2025-02-05 16:01:39,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2025-02-05 16:01:39,531 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:01:39,531 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] [2025-02-05 16:01:39,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-02-05 16:01:39,531 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:01:39,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:01:39,532 INFO L85 PathProgramCache]: Analyzing trace with hash -669502447, now seen corresponding path program 1 times [2025-02-05 16:01:39,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:01:39,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723795867] [2025-02-05 16:01:39,532 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:01:39,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:01:39,544 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 39 statements into 1 equivalence classes. [2025-02-05 16:01:39,550 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 39 of 39 statements. [2025-02-05 16:01:39,550 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:01:39,550 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:01:39,776 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2025-02-05 16:01:39,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:01:39,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723795867] [2025-02-05 16:01:39,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723795867] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:01:39,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:01:39,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 16:01:39,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405192403] [2025-02-05 16:01:39,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:01:39,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 16:01:39,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:01:39,779 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 16:01:39,779 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:01:39,780 INFO L87 Difference]: Start difference. First operand 51 states and 64 transitions. Second operand has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2025-02-05 16:01:39,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:01:39,906 INFO L93 Difference]: Finished difference Result 101 states and 131 transitions. [2025-02-05 16:01:39,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 16:01:39,907 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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 39 [2025-02-05 16:01:39,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:01:39,908 INFO L225 Difference]: With dead ends: 101 [2025-02-05 16:01:39,909 INFO L226 Difference]: Without dead ends: 53 [2025-02-05 16:01:39,909 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 [2025-02-05 16:01:39,910 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 21 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 16:01:39,910 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 140 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 16:01:39,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2025-02-05 16:01:39,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2025-02-05 16:01:39,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 34 states have (on average 1.2647058823529411) internal successors, (43), 39 states have internal predecessors, (43), 10 states have call successors, (10), 5 states have call predecessors, (10), 8 states have return successors, (13), 10 states have call predecessors, (13), 10 states have call successors, (13) [2025-02-05 16:01:39,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 66 transitions. [2025-02-05 16:01:39,922 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 66 transitions. Word has length 39 [2025-02-05 16:01:39,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:01:39,922 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 66 transitions. [2025-02-05 16:01:39,922 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.4) internal successors, (27), 5 states have internal predecessors, (27), 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) [2025-02-05 16:01:39,923 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 66 transitions. [2025-02-05 16:01:39,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-02-05 16:01:39,923 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:01:39,923 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] [2025-02-05 16:01:39,923 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-05 16:01:39,924 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:01:39,924 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:01:39,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1595517572, now seen corresponding path program 1 times [2025-02-05 16:01:39,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:01:39,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801214034] [2025-02-05 16:01:39,924 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:01:39,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:01:39,941 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-02-05 16:01:39,951 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-02-05 16:01:39,951 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:01:39,951 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:01:40,180 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2025-02-05 16:01:40,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:01:40,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801214034] [2025-02-05 16:01:40,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801214034] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:01:40,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:01:40,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 16:01:40,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661247432] [2025-02-05 16:01:40,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:01:40,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 16:01:40,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:01:40,183 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 16:01:40,183 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:01:40,183 INFO L87 Difference]: Start difference. First operand 53 states and 66 transitions. Second operand has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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) [2025-02-05 16:01:40,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:01:40,289 INFO L93 Difference]: Finished difference Result 105 states and 137 transitions. [2025-02-05 16:01:40,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 16:01:40,289 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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 50 [2025-02-05 16:01:40,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:01:40,291 INFO L225 Difference]: With dead ends: 105 [2025-02-05 16:01:40,291 INFO L226 Difference]: Without dead ends: 55 [2025-02-05 16:01:40,292 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 [2025-02-05 16:01:40,292 INFO L435 NwaCegarLoop]: 47 mSDtfsCounter, 18 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 16:01:40,294 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 168 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 16:01:40,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2025-02-05 16:01:40,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2025-02-05 16:01:40,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 40 states have internal predecessors, (44), 10 states have call successors, (10), 5 states have call predecessors, (10), 9 states have return successors, (14), 10 states have call predecessors, (14), 10 states have call successors, (14) [2025-02-05 16:01:40,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 68 transitions. [2025-02-05 16:01:40,306 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 68 transitions. Word has length 50 [2025-02-05 16:01:40,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:01:40,306 INFO L471 AbstractCegarLoop]: Abstraction has 55 states and 68 transitions. [2025-02-05 16:01:40,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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) [2025-02-05 16:01:40,306 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 68 transitions. [2025-02-05 16:01:40,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2025-02-05 16:01:40,307 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:01:40,307 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, 1, 1, 1] [2025-02-05 16:01:40,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-02-05 16:01:40,308 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:01:40,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:01:40,308 INFO L85 PathProgramCache]: Analyzing trace with hash 697593936, now seen corresponding path program 1 times [2025-02-05 16:01:40,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:01:40,308 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499014043] [2025-02-05 16:01:40,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:01:40,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:01:40,331 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 61 statements into 1 equivalence classes. [2025-02-05 16:01:40,338 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 61 of 61 statements. [2025-02-05 16:01:40,338 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:01:40,338 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:01:40,576 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2025-02-05 16:01:40,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:01:40,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499014043] [2025-02-05 16:01:40,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499014043] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:01:40,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 16:01:40,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2025-02-05 16:01:40,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948085272] [2025-02-05 16:01:40,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:01:40,579 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-05 16:01:40,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:01:40,579 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-05 16:01:40,579 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2025-02-05 16:01:40,579 INFO L87 Difference]: Start difference. First operand 55 states and 68 transitions. Second operand has 6 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 1 states have call predecessors, (9), 3 states have call successors, (9) [2025-02-05 16:01:40,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:01:40,664 INFO L93 Difference]: Finished difference Result 109 states and 143 transitions. [2025-02-05 16:01:40,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 16:01:40,665 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 1 states have call predecessors, (9), 3 states have call successors, (9) Word has length 61 [2025-02-05 16:01:40,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:01:40,666 INFO L225 Difference]: With dead ends: 109 [2025-02-05 16:01:40,666 INFO L226 Difference]: Without dead ends: 57 [2025-02-05 16:01:40,666 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 [2025-02-05 16:01:40,666 INFO L435 NwaCegarLoop]: 55 mSDtfsCounter, 16 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 16:01:40,667 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 174 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 16:01:40,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2025-02-05 16:01:40,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2025-02-05 16:01:40,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 36 states have (on average 1.25) internal successors, (45), 41 states have internal predecessors, (45), 10 states have call successors, (10), 5 states have call predecessors, (10), 10 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) [2025-02-05 16:01:40,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 70 transitions. [2025-02-05 16:01:40,678 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 70 transitions. Word has length 61 [2025-02-05 16:01:40,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:01:40,678 INFO L471 AbstractCegarLoop]: Abstraction has 57 states and 70 transitions. [2025-02-05 16:01:40,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 3 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (9), 1 states have call predecessors, (9), 3 states have call successors, (9) [2025-02-05 16:01:40,679 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 70 transitions. [2025-02-05 16:01:40,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-02-05 16:01:40,680 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:01:40,680 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1] [2025-02-05 16:01:40,680 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-02-05 16:01:40,680 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:01:40,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:01:40,682 INFO L85 PathProgramCache]: Analyzing trace with hash 360209277, now seen corresponding path program 1 times [2025-02-05 16:01:40,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:01:40,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326230116] [2025-02-05 16:01:40,682 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:01:40,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:01:40,713 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-02-05 16:01:40,725 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-02-05 16:01:40,725 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:01:40,725 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:01:41,071 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-02-05 16:01:41,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:01:41,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326230116] [2025-02-05 16:01:41,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326230116] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:01:41,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1098952233] [2025-02-05 16:01:41,071 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:01:41,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:01:41,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:01:41,076 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) [2025-02-05 16:01:41,077 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 [2025-02-05 16:01:41,154 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-02-05 16:01:41,204 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-02-05 16:01:41,204 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:01:41,204 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:01:41,206 INFO L256 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 16:01:41,210 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:01:41,241 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-05 16:01:41,241 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 16:01:41,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1098952233] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:01:41,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 16:01:41,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2025-02-05 16:01:41,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877883033] [2025-02-05 16:01:41,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:01:41,242 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 16:01:41,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:01:41,242 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 16:01:41,243 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-02-05 16:01:41,243 INFO L87 Difference]: Start difference. First operand 57 states and 70 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2025-02-05 16:01:41,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:01:41,260 INFO L93 Difference]: Finished difference Result 65 states and 79 transitions. [2025-02-05 16:01:41,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 16:01:41,261 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 66 [2025-02-05 16:01:41,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:01:41,262 INFO L225 Difference]: With dead ends: 65 [2025-02-05 16:01:41,262 INFO L226 Difference]: Without dead ends: 60 [2025-02-05 16:01:41,262 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-02-05 16:01:41,262 INFO L435 NwaCegarLoop]: 57 mSDtfsCounter, 1 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 16:01:41,263 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 163 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 16:01:41,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2025-02-05 16:01:41,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2025-02-05 16:01:41,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 38 states have (on average 1.236842105263158) internal successors, (47), 43 states have internal predecessors, (47), 10 states have call successors, (10), 5 states have call predecessors, (10), 10 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) [2025-02-05 16:01:41,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 72 transitions. [2025-02-05 16:01:41,268 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 72 transitions. Word has length 66 [2025-02-05 16:01:41,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:01:41,268 INFO L471 AbstractCegarLoop]: Abstraction has 59 states and 72 transitions. [2025-02-05 16:01:41,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2025-02-05 16:01:41,268 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 72 transitions. [2025-02-05 16:01:41,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-02-05 16:01:41,269 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:01:41,269 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1] [2025-02-05 16:01:41,279 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-02-05 16:01:41,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:01:41,470 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:01:41,470 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:01:41,470 INFO L85 PathProgramCache]: Analyzing trace with hash 361132798, now seen corresponding path program 1 times [2025-02-05 16:01:41,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:01:41,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560551600] [2025-02-05 16:01:41,470 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:01:41,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:01:41,482 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-02-05 16:01:41,487 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-02-05 16:01:41,488 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:01:41,488 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:01:41,901 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-02-05 16:01:41,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:01:41,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560551600] [2025-02-05 16:01:41,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560551600] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:01:41,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772472311] [2025-02-05 16:01:41,902 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:01:41,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:01:41,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:01:41,906 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) [2025-02-05 16:01:41,908 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 [2025-02-05 16:01:41,990 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-02-05 16:01:42,053 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-02-05 16:01:42,053 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:01:42,053 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:01:42,057 INFO L256 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 16:01:42,060 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:01:42,093 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2025-02-05 16:01:42,093 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 16:01:42,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772472311] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 16:01:42,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 16:01:42,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2025-02-05 16:01:42,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778664904] [2025-02-05 16:01:42,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 16:01:42,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-05 16:01:42,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:01:42,095 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-05 16:01:42,095 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-02-05 16:01:42,096 INFO L87 Difference]: Start difference. First operand 59 states and 72 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2025-02-05 16:01:42,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:01:42,116 INFO L93 Difference]: Finished difference Result 65 states and 78 transitions. [2025-02-05 16:01:42,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-05 16:01:42,116 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 66 [2025-02-05 16:01:42,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:01:42,118 INFO L225 Difference]: With dead ends: 65 [2025-02-05 16:01:42,118 INFO L226 Difference]: Without dead ends: 62 [2025-02-05 16:01:42,119 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2025-02-05 16:01:42,119 INFO L435 NwaCegarLoop]: 57 mSDtfsCounter, 1 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 16:01:42,119 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 165 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 16:01:42,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2025-02-05 16:01:42,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2025-02-05 16:01:42,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 40 states have (on average 1.225) internal successors, (49), 45 states have internal predecessors, (49), 10 states have call successors, (10), 5 states have call predecessors, (10), 10 states have return successors, (15), 10 states have call predecessors, (15), 10 states have call successors, (15) [2025-02-05 16:01:42,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 74 transitions. [2025-02-05 16:01:42,132 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 74 transitions. Word has length 66 [2025-02-05 16:01:42,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:01:42,134 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 74 transitions. [2025-02-05 16:01:42,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 1 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2025-02-05 16:01:42,135 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 74 transitions. [2025-02-05 16:01:42,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-02-05 16:01:42,135 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:01:42,136 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1] [2025-02-05 16:01:42,148 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 [2025-02-05 16:01:42,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:01:42,337 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:01:42,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:01:42,337 INFO L85 PathProgramCache]: Analyzing trace with hash 361133759, now seen corresponding path program 1 times [2025-02-05 16:01:42,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:01:42,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412896980] [2025-02-05 16:01:42,338 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:01:42,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:01:42,356 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-02-05 16:01:42,364 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-02-05 16:01:42,364 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:01:42,364 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:01:42,730 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2025-02-05 16:01:42,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:01:42,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412896980] [2025-02-05 16:01:42,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412896980] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:01:42,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622615979] [2025-02-05 16:01:42,730 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:01:42,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:01:42,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:01:42,732 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) [2025-02-05 16:01:42,739 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 [2025-02-05 16:01:42,810 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-02-05 16:01:42,868 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-02-05 16:01:42,868 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:01:42,868 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:01:42,874 INFO L256 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 18 conjuncts are in the unsatisfiable core [2025-02-05 16:01:42,879 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:01:42,900 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 [2025-02-05 16:01:42,958 WARN L873 $PredicateComparison]: unable to prove that (exists ((func_to_recursive_line_23_to_24_0_~a.offset Int)) (= |c_#memory_int#5| (store |c_old(#memory_int#5)| |c_func_to_recursive_line_23_to_24_0_#in~a.base| (let ((.cse0 (select |c_old(#memory_int#5)| |c_func_to_recursive_line_23_to_24_0_#in~a.base|))) (store .cse0 func_to_recursive_line_23_to_24_0_~a.offset (+ (select .cse0 func_to_recursive_line_23_to_24_0_~a.offset) 1)))))) is different from true [2025-02-05 16:01:42,997 INFO L349 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2025-02-05 16:01:42,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 32 [2025-02-05 16:01:43,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 21 [2025-02-05 16:01:43,048 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 2 not checked. [2025-02-05 16:01:43,048 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 16:01:43,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622615979] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:01:43,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-02-05 16:01:43,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 15 [2025-02-05 16:01:43,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801830926] [2025-02-05 16:01:43,156 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-02-05 16:01:43,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2025-02-05 16:01:43,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:01:43,157 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2025-02-05 16:01:43,157 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=201, Unknown=1, NotChecked=28, Total=272 [2025-02-05 16:01:43,157 INFO L87 Difference]: Start difference. First operand 61 states and 74 transitions. Second operand has 15 states, 12 states have (on average 5.0) internal successors, (60), 13 states have internal predecessors, (60), 7 states have call successors, (18), 3 states have call predecessors, (18), 6 states have return successors, (20), 6 states have call predecessors, (20), 7 states have call successors, (20) [2025-02-05 16:01:43,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:01:43,533 INFO L93 Difference]: Finished difference Result 131 states and 169 transitions. [2025-02-05 16:01:43,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-02-05 16:01:43,534 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 5.0) internal successors, (60), 13 states have internal predecessors, (60), 7 states have call successors, (18), 3 states have call predecessors, (18), 6 states have return successors, (20), 6 states have call predecessors, (20), 7 states have call successors, (20) Word has length 66 [2025-02-05 16:01:43,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:01:43,535 INFO L225 Difference]: With dead ends: 131 [2025-02-05 16:01:43,535 INFO L226 Difference]: Without dead ends: 71 [2025-02-05 16:01:43,535 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=423, Unknown=1, NotChecked=42, Total=552 [2025-02-05 16:01:43,537 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 52 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 144 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 16:01:43,537 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 158 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 397 Invalid, 0 Unknown, 144 Unchecked, 0.2s Time] [2025-02-05 16:01:43,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2025-02-05 16:01:43,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2025-02-05 16:01:43,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 49 states have internal predecessors, (55), 10 states have call successors, (10), 6 states have call predecessors, (10), 12 states have return successors, (18), 13 states have call predecessors, (18), 10 states have call successors, (18) [2025-02-05 16:01:43,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 83 transitions. [2025-02-05 16:01:43,547 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 83 transitions. Word has length 66 [2025-02-05 16:01:43,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:01:43,547 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 83 transitions. [2025-02-05 16:01:43,547 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 5.0) internal successors, (60), 13 states have internal predecessors, (60), 7 states have call successors, (18), 3 states have call predecessors, (18), 6 states have return successors, (20), 6 states have call predecessors, (20), 7 states have call successors, (20) [2025-02-05 16:01:43,547 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 83 transitions. [2025-02-05 16:01:43,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-02-05 16:01:43,548 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:01:43,548 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 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, 1] [2025-02-05 16:01:43,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-05 16:01:43,748 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:01:43,749 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:01:43,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:01:43,750 INFO L85 PathProgramCache]: Analyzing trace with hash 782124371, now seen corresponding path program 1 times [2025-02-05 16:01:43,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:01:43,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829182688] [2025-02-05 16:01:43,750 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:01:43,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:01:43,764 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-02-05 16:01:43,771 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-02-05 16:01:43,771 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:01:43,771 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:01:44,115 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-02-05 16:01:44,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:01:44,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829182688] [2025-02-05 16:01:44,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829182688] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:01:44,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524256168] [2025-02-05 16:01:44,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 16:01:44,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:01:44,116 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:01:44,118 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) [2025-02-05 16:01:44,122 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 [2025-02-05 16:01:44,182 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 71 statements into 1 equivalence classes. [2025-02-05 16:01:44,225 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 71 of 71 statements. [2025-02-05 16:01:44,226 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:01:44,226 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:01:44,228 INFO L256 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 28 conjuncts are in the unsatisfiable core [2025-02-05 16:01:44,230 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:01:44,427 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2025-02-05 16:01:44,532 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-02-05 16:01:44,534 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 16:01:53,023 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2025-02-05 16:01:53,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524256168] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 16:01:53,024 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 16:01:53,024 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 11] total 28 [2025-02-05 16:01:53,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504662415] [2025-02-05 16:01:53,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 16:01:53,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-02-05 16:01:53,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:01:53,025 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-02-05 16:01:53,025 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=669, Unknown=2, NotChecked=0, Total=756 [2025-02-05 16:01:53,025 INFO L87 Difference]: Start difference. First operand 69 states and 83 transitions. Second operand has 28 states, 23 states have (on average 3.782608695652174) internal successors, (87), 24 states have internal predecessors, (87), 10 states have call successors, (27), 5 states have call predecessors, (27), 9 states have return successors, (30), 9 states have call predecessors, (30), 10 states have call successors, (30) [2025-02-05 16:01:53,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:01:53,761 INFO L93 Difference]: Finished difference Result 135 states and 172 transitions. [2025-02-05 16:01:53,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-02-05 16:01:53,761 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 23 states have (on average 3.782608695652174) internal successors, (87), 24 states have internal predecessors, (87), 10 states have call successors, (27), 5 states have call predecessors, (27), 9 states have return successors, (30), 9 states have call predecessors, (30), 10 states have call successors, (30) Word has length 71 [2025-02-05 16:01:53,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:01:53,762 INFO L225 Difference]: With dead ends: 135 [2025-02-05 16:01:53,762 INFO L226 Difference]: Without dead ends: 69 [2025-02-05 16:01:53,763 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 128 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=236, Invalid=1568, Unknown=2, NotChecked=0, Total=1806 [2025-02-05 16:01:53,764 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 80 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 775 mSolverCounterSat, 59 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 775 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-02-05 16:01:53,764 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 236 Invalid, 835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 775 Invalid, 1 Unknown, 0 Unchecked, 0.4s Time] [2025-02-05 16:01:53,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2025-02-05 16:01:53,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2025-02-05 16:01:53,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 45 states have (on average 1.1777777777777778) internal successors, (53), 49 states have internal predecessors, (53), 10 states have call successors, (10), 6 states have call predecessors, (10), 13 states have return successors, (18), 13 states have call predecessors, (18), 10 states have call successors, (18) [2025-02-05 16:01:53,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 81 transitions. [2025-02-05 16:01:53,771 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 81 transitions. Word has length 71 [2025-02-05 16:01:53,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:01:53,772 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 81 transitions. [2025-02-05 16:01:53,772 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 23 states have (on average 3.782608695652174) internal successors, (87), 24 states have internal predecessors, (87), 10 states have call successors, (27), 5 states have call predecessors, (27), 9 states have return successors, (30), 9 states have call predecessors, (30), 10 states have call successors, (30) [2025-02-05 16:01:53,772 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 81 transitions. [2025-02-05 16:01:53,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2025-02-05 16:01:53,773 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:01:53,773 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 6, 6, 6, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:01:53,779 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-05 16:01:53,973 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,SelfDestructingSolverStorable8 [2025-02-05 16:01:53,974 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:01:53,974 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:01:53,974 INFO L85 PathProgramCache]: Analyzing trace with hash 643608640, now seen corresponding path program 2 times [2025-02-05 16:01:53,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:01:53,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602410817] [2025-02-05 16:01:53,974 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 16:01:53,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:01:53,993 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 135 statements into 2 equivalence classes. [2025-02-05 16:01:54,007 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 135 of 135 statements. [2025-02-05 16:01:54,007 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 16:01:54,007 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:01:54,582 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 14 proven. 109 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2025-02-05 16:01:54,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:01:54,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602410817] [2025-02-05 16:01:54,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602410817] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:01:54,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766401076] [2025-02-05 16:01:54,583 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 16:01:54,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:01:54,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:01:54,585 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) [2025-02-05 16:01:54,586 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 [2025-02-05 16:01:54,664 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 135 statements into 2 equivalence classes. [2025-02-05 16:01:54,739 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 135 of 135 statements. [2025-02-05 16:01:54,739 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 16:01:54,739 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:01:54,748 INFO L256 TraceCheckSpWp]: Trace formula consists of 895 conjuncts, 51 conjuncts are in the unsatisfiable core [2025-02-05 16:01:54,752 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:01:54,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-05 16:01:54,908 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 99 proven. 15 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2025-02-05 16:01:54,908 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 16:01:56,595 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 10 proven. 121 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2025-02-05 16:01:56,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [766401076] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 16:01:56,595 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 16:01:56,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 18] total 33 [2025-02-05 16:01:56,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2075408752] [2025-02-05 16:01:56,595 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 16:01:56,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-02-05 16:01:56,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:01:56,596 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-02-05 16:01:56,597 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=201, Invalid=855, Unknown=0, NotChecked=0, Total=1056 [2025-02-05 16:01:56,597 INFO L87 Difference]: Start difference. First operand 69 states and 81 transitions. Second operand has 33 states, 24 states have (on average 3.7083333333333335) internal successors, (89), 28 states have internal predecessors, (89), 11 states have call successors, (32), 7 states have call predecessors, (32), 11 states have return successors, (38), 9 states have call predecessors, (38), 11 states have call successors, (38) [2025-02-05 16:01:56,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:01:56,981 INFO L93 Difference]: Finished difference Result 137 states and 171 transitions. [2025-02-05 16:01:56,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2025-02-05 16:01:56,981 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 24 states have (on average 3.7083333333333335) internal successors, (89), 28 states have internal predecessors, (89), 11 states have call successors, (32), 7 states have call predecessors, (32), 11 states have return successors, (38), 9 states have call predecessors, (38), 11 states have call successors, (38) Word has length 135 [2025-02-05 16:01:56,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:01:56,983 INFO L225 Difference]: With dead ends: 137 [2025-02-05 16:01:56,983 INFO L226 Difference]: Without dead ends: 73 [2025-02-05 16:01:56,984 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 253 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 529 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=303, Invalid=1257, Unknown=0, NotChecked=0, Total=1560 [2025-02-05 16:01:56,984 INFO L435 NwaCegarLoop]: 57 mSDtfsCounter, 53 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 16:01:56,984 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 461 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 16:01:56,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2025-02-05 16:01:57,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2025-02-05 16:01:57,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 47 states have (on average 1.1702127659574468) internal successors, (55), 51 states have internal predecessors, (55), 10 states have call successors, (10), 6 states have call predecessors, (10), 15 states have return successors, (20), 15 states have call predecessors, (20), 10 states have call successors, (20) [2025-02-05 16:01:57,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 85 transitions. [2025-02-05 16:01:57,002 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 85 transitions. Word has length 135 [2025-02-05 16:01:57,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:01:57,002 INFO L471 AbstractCegarLoop]: Abstraction has 73 states and 85 transitions. [2025-02-05 16:01:57,002 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 24 states have (on average 3.7083333333333335) internal successors, (89), 28 states have internal predecessors, (89), 11 states have call successors, (32), 7 states have call predecessors, (32), 11 states have return successors, (38), 9 states have call predecessors, (38), 11 states have call successors, (38) [2025-02-05 16:01:57,002 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 85 transitions. [2025-02-05 16:01:57,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2025-02-05 16:01:57,003 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:01:57,004 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 10, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:01:57,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-02-05 16:01:57,204 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,SelfDestructingSolverStorable9 [2025-02-05 16:01:57,204 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:01:57,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:01:57,205 INFO L85 PathProgramCache]: Analyzing trace with hash 310170880, now seen corresponding path program 3 times [2025-02-05 16:01:57,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:01:57,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900219334] [2025-02-05 16:01:57,205 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 16:01:57,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:01:57,227 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 155 statements into 11 equivalence classes. [2025-02-05 16:01:57,234 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 50 of 155 statements. [2025-02-05 16:01:57,235 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-05 16:01:57,235 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:01:57,633 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 393 trivial. 0 not checked. [2025-02-05 16:01:57,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:01:57,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900219334] [2025-02-05 16:01:57,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900219334] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:01:57,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950448797] [2025-02-05 16:01:57,633 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 16:01:57,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:01:57,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:01:57,636 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) [2025-02-05 16:01:57,641 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 [2025-02-05 16:01:57,751 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 155 statements into 11 equivalence classes. [2025-02-05 16:01:57,796 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 50 of 155 statements. [2025-02-05 16:01:57,796 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-02-05 16:01:57,796 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:01:57,803 INFO L256 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-02-05 16:01:57,810 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:01:57,819 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 [2025-02-05 16:01:57,956 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 26 proven. 3 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2025-02-05 16:01:57,957 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 16:01:58,657 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 26 proven. 4 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2025-02-05 16:01:58,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950448797] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 16:01:58,657 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 16:01:58,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 10] total 28 [2025-02-05 16:01:58,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090489625] [2025-02-05 16:01:58,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 16:01:58,658 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2025-02-05 16:01:58,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:01:58,659 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2025-02-05 16:01:58,659 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=655, Unknown=0, NotChecked=0, Total=756 [2025-02-05 16:01:58,659 INFO L87 Difference]: Start difference. First operand 73 states and 85 transitions. Second operand has 28 states, 21 states have (on average 3.238095238095238) internal successors, (68), 24 states have internal predecessors, (68), 13 states have call successors, (23), 6 states have call predecessors, (23), 9 states have return successors, (23), 10 states have call predecessors, (23), 13 states have call successors, (23) [2025-02-05 16:01:59,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:01:59,082 INFO L93 Difference]: Finished difference Result 145 states and 173 transitions. [2025-02-05 16:01:59,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-02-05 16:01:59,082 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 21 states have (on average 3.238095238095238) internal successors, (68), 24 states have internal predecessors, (68), 13 states have call successors, (23), 6 states have call predecessors, (23), 9 states have return successors, (23), 10 states have call predecessors, (23), 13 states have call successors, (23) Word has length 155 [2025-02-05 16:01:59,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:01:59,083 INFO L225 Difference]: With dead ends: 145 [2025-02-05 16:01:59,083 INFO L226 Difference]: Without dead ends: 77 [2025-02-05 16:01:59,084 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 299 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=211, Invalid=1271, Unknown=0, NotChecked=0, Total=1482 [2025-02-05 16:01:59,084 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 66 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 16:01:59,085 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 211 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 16:01:59,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2025-02-05 16:01:59,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2025-02-05 16:01:59,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 49 states have (on average 1.163265306122449) internal successors, (57), 53 states have internal predecessors, (57), 10 states have call successors, (10), 6 states have call predecessors, (10), 17 states have return successors, (22), 17 states have call predecessors, (22), 10 states have call successors, (22) [2025-02-05 16:01:59,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 89 transitions. [2025-02-05 16:01:59,091 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 89 transitions. Word has length 155 [2025-02-05 16:01:59,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:01:59,091 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 89 transitions. [2025-02-05 16:01:59,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 21 states have (on average 3.238095238095238) internal successors, (68), 24 states have internal predecessors, (68), 13 states have call successors, (23), 6 states have call predecessors, (23), 9 states have return successors, (23), 10 states have call predecessors, (23), 13 states have call successors, (23) [2025-02-05 16:01:59,091 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 89 transitions. [2025-02-05 16:01:59,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2025-02-05 16:01:59,095 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:01:59,095 INFO L218 NwaCegarLoop]: trace histogram [36, 36, 30, 30, 30, 12, 12, 12, 12, 9, 9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:01:59,103 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-05 16:01:59,295 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,SelfDestructingSolverStorable10 [2025-02-05 16:01:59,295 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:01:59,296 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:01:59,296 INFO L85 PathProgramCache]: Analyzing trace with hash 687950258, now seen corresponding path program 4 times [2025-02-05 16:01:59,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:01:59,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171546118] [2025-02-05 16:01:59,296 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 16:01:59,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:01:59,325 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 398 statements into 2 equivalence classes. [2025-02-05 16:01:59,336 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 397 of 398 statements. [2025-02-05 16:01:59,337 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-05 16:01:59,337 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:02:00,039 INFO L134 CoverageAnalysis]: Checked inductivity of 3795 backedges. 78 proven. 95 refuted. 0 times theorem prover too weak. 3622 trivial. 0 not checked. [2025-02-05 16:02:00,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:02:00,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171546118] [2025-02-05 16:02:00,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171546118] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:02:00,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770658101] [2025-02-05 16:02:00,040 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 16:02:00,040 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:02:00,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:02:00,042 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) [2025-02-05 16:02:00,044 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 [2025-02-05 16:02:00,203 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 398 statements into 2 equivalence classes. [2025-02-05 16:02:00,413 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) and asserted 397 of 398 statements. [2025-02-05 16:02:00,413 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 1 check-sat command(s) [2025-02-05 16:02:00,413 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:02:00,419 INFO L256 TraceCheckSpWp]: Trace formula consists of 2256 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-02-05 16:02:00,426 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:02:00,434 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-05 16:02:00,537 INFO L134 CoverageAnalysis]: Checked inductivity of 3795 backedges. 1832 proven. 3 refuted. 0 times theorem prover too weak. 1960 trivial. 0 not checked. [2025-02-05 16:02:00,538 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 16:02:02,194 INFO L134 CoverageAnalysis]: Checked inductivity of 3795 backedges. 92 proven. 62 refuted. 0 times theorem prover too weak. 3641 trivial. 0 not checked. [2025-02-05 16:02:02,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [770658101] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 16:02:02,195 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 16:02:02,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 24 [2025-02-05 16:02:02,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406687194] [2025-02-05 16:02:02,195 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 16:02:02,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-02-05 16:02:02,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:02:02,198 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-02-05 16:02:02,199 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=468, Unknown=0, NotChecked=0, Total=552 [2025-02-05 16:02:02,199 INFO L87 Difference]: Start difference. First operand 77 states and 89 transitions. Second operand has 24 states, 18 states have (on average 4.666666666666667) internal successors, (84), 20 states have internal predecessors, (84), 11 states have call successors, (31), 6 states have call predecessors, (31), 8 states have return successors, (35), 8 states have call predecessors, (35), 11 states have call successors, (35) [2025-02-05 16:02:02,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:02:02,597 INFO L93 Difference]: Finished difference Result 153 states and 187 transitions. [2025-02-05 16:02:02,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-05 16:02:02,598 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 18 states have (on average 4.666666666666667) internal successors, (84), 20 states have internal predecessors, (84), 11 states have call successors, (31), 6 states have call predecessors, (31), 8 states have return successors, (35), 8 states have call predecessors, (35), 11 states have call successors, (35) Word has length 398 [2025-02-05 16:02:02,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:02:02,598 INFO L225 Difference]: With dead ends: 153 [2025-02-05 16:02:02,599 INFO L226 Difference]: Without dead ends: 81 [2025-02-05 16:02:02,599 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 815 GetRequests, 782 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=190, Invalid=1000, Unknown=0, NotChecked=0, Total=1190 [2025-02-05 16:02:02,600 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 40 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 16:02:02,600 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 439 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 472 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 16:02:02,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2025-02-05 16:02:02,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2025-02-05 16:02:02,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 51 states have (on average 1.1568627450980393) internal successors, (59), 55 states have internal predecessors, (59), 10 states have call successors, (10), 6 states have call predecessors, (10), 19 states have return successors, (24), 19 states have call predecessors, (24), 10 states have call successors, (24) [2025-02-05 16:02:02,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 93 transitions. [2025-02-05 16:02:02,606 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 93 transitions. Word has length 398 [2025-02-05 16:02:02,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:02:02,606 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 93 transitions. [2025-02-05 16:02:02,607 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 18 states have (on average 4.666666666666667) internal successors, (84), 20 states have internal predecessors, (84), 11 states have call successors, (31), 6 states have call predecessors, (31), 8 states have return successors, (35), 8 states have call predecessors, (35), 11 states have call successors, (35) [2025-02-05 16:02:02,607 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 93 transitions. [2025-02-05 16:02:02,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1113 [2025-02-05 16:02:02,651 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:02:02,651 INFO L218 NwaCegarLoop]: trace histogram [144, 144, 120, 120, 120, 36, 36, 24, 24, 24, 24, 24, 24, 24, 18, 18, 12, 12, 12, 12, 12, 12, 12, 9, 9, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:02:02,661 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-02-05 16:02:02,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:02:02,855 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:02:02,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:02:02,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1300756980, now seen corresponding path program 5 times [2025-02-05 16:02:02,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:02:02,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982542300] [2025-02-05 16:02:02,857 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 16:02:02,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:02:02,950 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 1112 statements into 15 equivalence classes. [2025-02-05 16:02:03,070 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 426 of 1112 statements. [2025-02-05 16:02:03,070 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-02-05 16:02:03,070 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:02:04,927 INFO L134 CoverageAnalysis]: Checked inductivity of 52704 backedges. 18 proven. 4135 refuted. 0 times theorem prover too weak. 48551 trivial. 0 not checked. [2025-02-05 16:02:04,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:02:04,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982542300] [2025-02-05 16:02:04,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982542300] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:02:04,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112188008] [2025-02-05 16:02:04,928 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 16:02:04,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:02:04,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:02:04,933 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 16:02:04,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-02-05 16:02:05,239 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 1112 statements into 15 equivalence classes. [2025-02-05 16:02:15,327 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) and asserted 426 of 1112 statements. [2025-02-05 16:02:15,327 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2025-02-05 16:02:15,328 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:02:15,343 INFO L256 TraceCheckSpWp]: Trace formula consists of 1627 conjuncts, 75 conjuncts are in the unsatisfiable core [2025-02-05 16:02:15,356 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:02:15,366 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-05 16:02:15,619 INFO L134 CoverageAnalysis]: Checked inductivity of 52704 backedges. 4054 proven. 35 refuted. 0 times theorem prover too weak. 48615 trivial. 0 not checked. [2025-02-05 16:02:15,620 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 16:02:21,518 INFO L134 CoverageAnalysis]: Checked inductivity of 52704 backedges. 18 proven. 4170 refuted. 0 times theorem prover too weak. 48516 trivial. 0 not checked. [2025-02-05 16:02:21,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112188008] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 16:02:21,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 16:02:21,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 26] total 38 [2025-02-05 16:02:21,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700410198] [2025-02-05 16:02:21,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 16:02:21,521 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2025-02-05 16:02:21,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:02:21,523 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2025-02-05 16:02:21,523 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=295, Invalid=1111, Unknown=0, NotChecked=0, Total=1406 [2025-02-05 16:02:21,524 INFO L87 Difference]: Start difference. First operand 81 states and 93 transitions. Second operand has 38 states, 30 states have (on average 3.066666666666667) internal successors, (92), 31 states have internal predecessors, (92), 10 states have call successors, (32), 9 states have call predecessors, (32), 14 states have return successors, (43), 12 states have call predecessors, (43), 10 states have call successors, (43) [2025-02-05 16:02:21,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:02:21,825 INFO L93 Difference]: Finished difference Result 159 states and 196 transitions. [2025-02-05 16:02:21,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-05 16:02:21,825 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 30 states have (on average 3.066666666666667) internal successors, (92), 31 states have internal predecessors, (92), 10 states have call successors, (32), 9 states have call predecessors, (32), 14 states have return successors, (43), 12 states have call predecessors, (43), 10 states have call successors, (43) Word has length 1112 [2025-02-05 16:02:21,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:02:21,826 INFO L225 Difference]: With dead ends: 159 [2025-02-05 16:02:21,826 INFO L226 Difference]: Without dead ends: 83 [2025-02-05 16:02:21,827 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2252 GetRequests, 2206 SyntacticMatches, 6 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 684 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=382, Invalid=1340, Unknown=0, NotChecked=0, Total=1722 [2025-02-05 16:02:21,827 INFO L435 NwaCegarLoop]: 59 mSDtfsCounter, 48 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-05 16:02:21,827 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 685 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-05 16:02:21,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2025-02-05 16:02:21,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2025-02-05 16:02:21,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 52 states have (on average 1.1538461538461537) internal successors, (60), 56 states have internal predecessors, (60), 10 states have call successors, (10), 6 states have call predecessors, (10), 20 states have return successors, (25), 20 states have call predecessors, (25), 10 states have call successors, (25) [2025-02-05 16:02:21,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 95 transitions. [2025-02-05 16:02:21,834 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 95 transitions. Word has length 1112 [2025-02-05 16:02:21,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:02:21,834 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 95 transitions. [2025-02-05 16:02:21,835 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 30 states have (on average 3.066666666666667) internal successors, (92), 31 states have internal predecessors, (92), 10 states have call successors, (32), 9 states have call predecessors, (32), 14 states have return successors, (43), 12 states have call predecessors, (43), 10 states have call successors, (43) [2025-02-05 16:02:21,835 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 95 transitions. [2025-02-05 16:02:21,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1233 [2025-02-05 16:02:21,859 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:02:21,859 INFO L218 NwaCegarLoop]: trace histogram [168, 168, 144, 144, 144, 36, 36, 24, 24, 24, 24, 24, 24, 24, 18, 18, 12, 12, 12, 12, 12, 12, 12, 9, 9, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:02:21,885 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-05 16:02:22,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:02:22,064 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:02:22,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:02:22,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1200312948, now seen corresponding path program 6 times [2025-02-05 16:02:22,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:02:22,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840127582] [2025-02-05 16:02:22,065 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 16:02:22,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:02:22,130 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 1232 statements into 16 equivalence classes. [2025-02-05 16:02:22,168 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 184 of 1232 statements. [2025-02-05 16:02:22,169 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-02-05 16:02:22,169 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:02:23,108 INFO L134 CoverageAnalysis]: Checked inductivity of 70788 backedges. 6 proven. 21 refuted. 0 times theorem prover too weak. 70761 trivial. 0 not checked. [2025-02-05 16:02:23,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:02:23,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840127582] [2025-02-05 16:02:23,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840127582] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:02:23,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998201649] [2025-02-05 16:02:23,109 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 16:02:23,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:02:23,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:02:23,111 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 16:02:23,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-02-05 16:02:23,516 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 1232 statements into 16 equivalence classes. [2025-02-05 16:02:24,395 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 184 of 1232 statements. [2025-02-05 16:02:24,396 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-02-05 16:02:24,396 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:02:24,403 INFO L256 TraceCheckSpWp]: Trace formula consists of 1155 conjuncts, 53 conjuncts are in the unsatisfiable core [2025-02-05 16:02:24,417 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:02:24,424 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-05 16:02:24,637 INFO L134 CoverageAnalysis]: Checked inductivity of 70788 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 70773 trivial. 0 not checked. [2025-02-05 16:02:24,637 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 16:02:29,572 INFO L134 CoverageAnalysis]: Checked inductivity of 70788 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 70755 trivial. 0 not checked. [2025-02-05 16:02:29,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998201649] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 16:02:29,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 16:02:29,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 11, 18] total 40 [2025-02-05 16:02:29,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446437812] [2025-02-05 16:02:29,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 16:02:29,577 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2025-02-05 16:02:29,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:02:29,578 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2025-02-05 16:02:29,582 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=262, Invalid=1298, Unknown=0, NotChecked=0, Total=1560 [2025-02-05 16:02:29,582 INFO L87 Difference]: Start difference. First operand 83 states and 95 transitions. Second operand has 40 states, 30 states have (on average 2.3666666666666667) internal successors, (71), 35 states have internal predecessors, (71), 18 states have call successors, (24), 6 states have call predecessors, (24), 12 states have return successors, (26), 18 states have call predecessors, (26), 18 states have call successors, (26) [2025-02-05 16:02:30,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:02:30,005 INFO L93 Difference]: Finished difference Result 102 states and 118 transitions. [2025-02-05 16:02:30,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-05 16:02:30,006 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 30 states have (on average 2.3666666666666667) internal successors, (71), 35 states have internal predecessors, (71), 18 states have call successors, (24), 6 states have call predecessors, (24), 12 states have return successors, (26), 18 states have call predecessors, (26), 18 states have call successors, (26) Word has length 1232 [2025-02-05 16:02:30,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:02:30,012 INFO L225 Difference]: With dead ends: 102 [2025-02-05 16:02:30,012 INFO L226 Difference]: Without dead ends: 87 [2025-02-05 16:02:30,013 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2490 GetRequests, 2444 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 614 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=392, Invalid=1864, Unknown=0, NotChecked=0, Total=2256 [2025-02-05 16:02:30,013 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 70 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 16:02:30,015 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 307 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 16:02:30,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2025-02-05 16:02:30,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2025-02-05 16:02:30,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 54 states have (on average 1.1481481481481481) internal successors, (62), 58 states have internal predecessors, (62), 10 states have call successors, (10), 6 states have call predecessors, (10), 22 states have return successors, (27), 22 states have call predecessors, (27), 10 states have call successors, (27) [2025-02-05 16:02:30,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 99 transitions. [2025-02-05 16:02:30,025 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 99 transitions. Word has length 1232 [2025-02-05 16:02:30,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:02:30,027 INFO L471 AbstractCegarLoop]: Abstraction has 87 states and 99 transitions. [2025-02-05 16:02:30,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 30 states have (on average 2.3666666666666667) internal successors, (71), 35 states have internal predecessors, (71), 18 states have call successors, (24), 6 states have call predecessors, (24), 12 states have return successors, (26), 18 states have call predecessors, (26), 18 states have call successors, (26) [2025-02-05 16:02:30,027 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 99 transitions. [2025-02-05 16:02:30,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2043 [2025-02-05 16:02:30,042 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:02:30,042 INFO L218 NwaCegarLoop]: trace histogram [280, 280, 240, 240, 240, 60, 60, 40, 40, 40, 40, 40, 40, 40, 30, 30, 20, 20, 20, 20, 20, 20, 20, 15, 15, 10, 10, 10, 10, 10, 10, 10, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:02:30,052 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-02-05 16:02:30,247 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:02:30,247 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:02:30,248 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:02:30,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1500847804, now seen corresponding path program 7 times [2025-02-05 16:02:30,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:02:30,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847059944] [2025-02-05 16:02:30,248 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 16:02:30,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:02:30,361 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2042 statements into 1 equivalence classes. [2025-02-05 16:02:30,525 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2042 of 2042 statements. [2025-02-05 16:02:30,525 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:02:30,525 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:02:38,375 INFO L134 CoverageAnalysis]: Checked inductivity of 197295 backedges. 73 proven. 1084 refuted. 0 times theorem prover too weak. 196138 trivial. 0 not checked. [2025-02-05 16:02:38,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 16:02:38,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847059944] [2025-02-05 16:02:38,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847059944] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 16:02:38,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [13539797] [2025-02-05 16:02:38,376 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 16:02:38,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 16:02:38,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 16:02:38,384 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-05 16:02:38,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-02-05 16:02:38,932 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 2042 statements into 1 equivalence classes. [2025-02-05 16:02:39,808 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 2042 of 2042 statements. [2025-02-05 16:02:39,808 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 16:02:39,808 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 16:02:39,858 INFO L256 TraceCheckSpWp]: Trace formula consists of 9417 conjuncts, 39 conjuncts are in the unsatisfiable core [2025-02-05 16:02:39,884 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 16:02:39,894 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2025-02-05 16:02:40,152 INFO L134 CoverageAnalysis]: Checked inductivity of 197295 backedges. 63381 proven. 8 refuted. 0 times theorem prover too weak. 133906 trivial. 0 not checked. [2025-02-05 16:02:40,152 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 16:02:48,140 INFO L134 CoverageAnalysis]: Checked inductivity of 197295 backedges. 65 proven. 479 refuted. 0 times theorem prover too weak. 196751 trivial. 0 not checked. [2025-02-05 16:02:48,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [13539797] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 16:02:48,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 16:02:48,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 14] total 32 [2025-02-05 16:02:48,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269074431] [2025-02-05 16:02:48,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 16:02:48,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-02-05 16:02:48,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 16:02:48,143 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-02-05 16:02:48,143 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=854, Unknown=0, NotChecked=0, Total=992 [2025-02-05 16:02:48,143 INFO L87 Difference]: Start difference. First operand 87 states and 99 transitions. Second operand has 32 states, 24 states have (on average 3.875) internal successors, (93), 27 states have internal predecessors, (93), 15 states have call successors, (35), 7 states have call predecessors, (35), 11 states have return successors, (40), 13 states have call predecessors, (40), 15 states have call successors, (40) [2025-02-05 16:02:48,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 16:02:48,590 INFO L93 Difference]: Finished difference Result 173 states and 210 transitions. [2025-02-05 16:02:48,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2025-02-05 16:02:48,591 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 24 states have (on average 3.875) internal successors, (93), 27 states have internal predecessors, (93), 15 states have call successors, (35), 7 states have call predecessors, (35), 11 states have return successors, (40), 13 states have call predecessors, (40), 15 states have call successors, (40) Word has length 2042 [2025-02-05 16:02:48,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 16:02:48,592 INFO L225 Difference]: With dead ends: 173 [2025-02-05 16:02:48,592 INFO L226 Difference]: Without dead ends: 91 [2025-02-05 16:02:48,593 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4108 GetRequests, 4066 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 431 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=285, Invalid=1607, Unknown=0, NotChecked=0, Total=1892 [2025-02-05 16:02:48,593 INFO L435 NwaCegarLoop]: 39 mSDtfsCounter, 64 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-05 16:02:48,593 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 457 Invalid, 544 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-05 16:02:48,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2025-02-05 16:02:48,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2025-02-05 16:02:48,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 56 states have (on average 1.1428571428571428) internal successors, (64), 60 states have internal predecessors, (64), 10 states have call successors, (10), 6 states have call predecessors, (10), 24 states have return successors, (29), 24 states have call predecessors, (29), 10 states have call successors, (29) [2025-02-05 16:02:48,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 103 transitions. [2025-02-05 16:02:48,600 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 103 transitions. Word has length 2042 [2025-02-05 16:02:48,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 16:02:48,601 INFO L471 AbstractCegarLoop]: Abstraction has 91 states and 103 transitions. [2025-02-05 16:02:48,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 24 states have (on average 3.875) internal successors, (93), 27 states have internal predecessors, (93), 15 states have call successors, (35), 7 states have call predecessors, (35), 11 states have return successors, (40), 13 states have call predecessors, (40), 15 states have call successors, (40) [2025-02-05 16:02:48,601 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 103 transitions. [2025-02-05 16:02:48,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4203 [2025-02-05 16:02:48,759 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 16:02:48,760 INFO L218 NwaCegarLoop]: trace histogram [630, 630, 540, 540, 540, 120, 120, 90, 90, 90, 90, 90, 90, 90, 40, 40, 30, 30, 30, 30, 30, 30, 30, 15, 15, 10, 10, 10, 10, 10, 10, 10, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 16:02:48,782 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-05 16:02:48,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2025-02-05 16:02:48,964 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 16:02:48,966 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 16:02:48,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1842735652, now seen corresponding path program 8 times [2025-02-05 16:02:48,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 16:02:48,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297285794] [2025-02-05 16:02:48,966 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 16:02:48,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 16:02:49,179 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 4202 statements into 2 equivalence classes. [2025-02-05 16:02:49,603 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 4202 of 4202 statements. [2025-02-05 16:02:49,603 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 16:02:49,604 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat