./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/standard_copy2_ground-2.i --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/array-examples/standard_copy2_ground-2.i -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 910d8e768520d514eafd11bd6e0d202501f1eee040b6e70d07e33c173cc4a1ca --- Real Ultimate output --- This is Ultimate 0.3.0-?-c00e63d-m [2025-02-05 09:51:33,892 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-05 09:51:33,967 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-05 09:51:33,974 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-05 09:51:33,974 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-05 09:51:34,005 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-05 09:51:34,008 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-05 09:51:34,008 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-05 09:51:34,008 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-05 09:51:34,008 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-05 09:51:34,009 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-05 09:51:34,009 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-05 09:51:34,009 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-05 09:51:34,009 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-05 09:51:34,009 INFO L153 SettingsManager]: * Use SBE=true [2025-02-05 09:51:34,009 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-05 09:51:34,009 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-05 09:51:34,009 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-05 09:51:34,009 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-05 09:51:34,009 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-05 09:51:34,009 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-05 09:51:34,010 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-05 09:51:34,010 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-05 09:51:34,010 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-05 09:51:34,010 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-05 09:51:34,010 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-05 09:51:34,010 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-05 09:51:34,010 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-05 09:51:34,010 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-05 09:51:34,010 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-05 09:51:34,010 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-05 09:51:34,010 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-05 09:51:34,010 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 09:51:34,011 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-05 09:51:34,011 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-05 09:51:34,011 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-05 09:51:34,011 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-05 09:51:34,011 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-05 09:51:34,011 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-05 09:51:34,011 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-05 09:51:34,011 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-05 09:51:34,011 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-05 09:51:34,011 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-05 09:51:34,011 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 -> 910d8e768520d514eafd11bd6e0d202501f1eee040b6e70d07e33c173cc4a1ca [2025-02-05 09:51:34,319 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-05 09:51:34,327 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-05 09:51:34,331 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-05 09:51:34,332 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-05 09:51:34,333 INFO L274 PluginConnector]: CDTParser initialized [2025-02-05 09:51:34,334 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_copy2_ground-2.i [2025-02-05 09:51:35,725 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b27ad28c1/e1986a15fa264b0b828c13e5230cb5c5/FLAGa77d8f9bd [2025-02-05 09:51:35,968 INFO L384 CDTParser]: Found 1 translation units. [2025-02-05 09:51:35,969 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-examples/standard_copy2_ground-2.i [2025-02-05 09:51:35,977 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b27ad28c1/e1986a15fa264b0b828c13e5230cb5c5/FLAGa77d8f9bd [2025-02-05 09:51:36,002 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/b27ad28c1/e1986a15fa264b0b828c13e5230cb5c5 [2025-02-05 09:51:36,033 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-05 09:51:36,035 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-05 09:51:36,040 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-05 09:51:36,041 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-05 09:51:36,046 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-05 09:51:36,047 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 09:51:36" (1/1) ... [2025-02-05 09:51:36,052 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a737a78 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:51:36, skipping insertion in model container [2025-02-05 09:51:36,053 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.02 09:51:36" (1/1) ... [2025-02-05 09:51:36,071 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-05 09:51:36,222 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/array-examples/standard_copy2_ground-2.i[816,829] [2025-02-05 09:51:36,234 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 09:51:36,245 INFO L200 MainTranslator]: Completed pre-run [2025-02-05 09:51:36,256 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/array-examples/standard_copy2_ground-2.i[816,829] [2025-02-05 09:51:36,263 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-05 09:51:36,277 INFO L204 MainTranslator]: Completed translation [2025-02-05 09:51:36,277 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:51:36 WrapperNode [2025-02-05 09:51:36,278 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-05 09:51:36,278 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-05 09:51:36,278 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-05 09:51:36,278 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-05 09:51:36,284 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:51:36" (1/1) ... [2025-02-05 09:51:36,293 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:51:36" (1/1) ... [2025-02-05 09:51:36,311 INFO L138 Inliner]: procedures = 16, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 68 [2025-02-05 09:51:36,311 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-05 09:51:36,312 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-05 09:51:36,313 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-05 09:51:36,313 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-05 09:51:36,319 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:51:36" (1/1) ... [2025-02-05 09:51:36,320 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:51:36" (1/1) ... [2025-02-05 09:51:36,322 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:51:36" (1/1) ... [2025-02-05 09:51:36,342 INFO L175 MemorySlicer]: Split 9 memory accesses to 4 slices as follows [2, 3, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2025-02-05 09:51:36,343 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:51:36" (1/1) ... [2025-02-05 09:51:36,343 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:51:36" (1/1) ... [2025-02-05 09:51:36,351 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:51:36" (1/1) ... [2025-02-05 09:51:36,352 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:51:36" (1/1) ... [2025-02-05 09:51:36,356 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:51:36" (1/1) ... [2025-02-05 09:51:36,357 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:51:36" (1/1) ... [2025-02-05 09:51:36,359 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-05 09:51:36,360 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-05 09:51:36,363 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-05 09:51:36,364 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-05 09:51:36,365 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:51:36" (1/1) ... [2025-02-05 09:51:36,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-05 09:51:36,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:51:36,397 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 09:51:36,404 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 09:51:36,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-05 09:51:36,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-05 09:51:36,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-05 09:51:36,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-05 09:51:36,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-05 09:51:36,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-05 09:51:36,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-05 09:51:36,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-05 09:51:36,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-05 09:51:36,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-02-05 09:51:36,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-05 09:51:36,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-05 09:51:36,427 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-05 09:51:36,427 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-05 09:51:36,427 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-05 09:51:36,427 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-02-05 09:51:36,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-05 09:51:36,505 INFO L257 CfgBuilder]: Building ICFG [2025-02-05 09:51:36,507 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-05 09:51:36,661 INFO L1309 $ProcedureCfgBuilder]: dead code at ProgramPoint L16: call ULTIMATE.dealloc(main_~#a1~0#1.base, main_~#a1~0#1.offset);havoc main_~#a1~0#1.base, main_~#a1~0#1.offset;call ULTIMATE.dealloc(main_~#a2~0#1.base, main_~#a2~0#1.offset);havoc main_~#a2~0#1.base, main_~#a2~0#1.offset;call ULTIMATE.dealloc(main_~#a3~0#1.base, main_~#a3~0#1.offset);havoc main_~#a3~0#1.base, main_~#a3~0#1.offset; [2025-02-05 09:51:36,665 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2025-02-05 09:51:36,665 INFO L308 CfgBuilder]: Performing block encoding [2025-02-05 09:51:36,674 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-05 09:51:36,676 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-05 09:51:36,677 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 09:51:36 BoogieIcfgContainer [2025-02-05 09:51:36,677 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-05 09:51:36,679 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-05 09:51:36,679 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-05 09:51:36,684 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-05 09:51:36,684 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.02 09:51:36" (1/3) ... [2025-02-05 09:51:36,685 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@485c85c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 09:51:36, skipping insertion in model container [2025-02-05 09:51:36,685 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.02 09:51:36" (2/3) ... [2025-02-05 09:51:36,685 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@485c85c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.02 09:51:36, skipping insertion in model container [2025-02-05 09:51:36,686 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 05.02 09:51:36" (3/3) ... [2025-02-05 09:51:36,687 INFO L128 eAbstractionObserver]: Analyzing ICFG standard_copy2_ground-2.i [2025-02-05 09:51:36,701 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-05 09:51:36,703 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG standard_copy2_ground-2.i that has 1 procedures, 13 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2025-02-05 09:51:36,758 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-05 09:51:36,771 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;@186075db, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-05 09:51:36,772 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-05 09:51:36,776 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:51:36,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-02-05 09:51:36,781 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:51:36,782 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:51:36,783 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:51:36,787 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:51:36,789 INFO L85 PathProgramCache]: Analyzing trace with hash -517095684, now seen corresponding path program 1 times [2025-02-05 09:51:36,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:51:36,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640608258] [2025-02-05 09:51:36,798 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 09:51:36,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:51:36,875 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-05 09:51:36,895 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-05 09:51:36,896 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 09:51:36,896 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:51:37,022 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 09:51:37,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:51:37,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640608258] [2025-02-05 09:51:37,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640608258] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 09:51:37,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-05 09:51:37,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-02-05 09:51:37,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308880720] [2025-02-05 09:51:37,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 09:51:37,030 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 09:51:37,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:51:37,050 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 09:51:37,051 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 09:51:37,053 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:51:37,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:51:37,076 INFO L93 Difference]: Finished difference Result 24 states and 32 transitions. [2025-02-05 09:51:37,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 09:51:37,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-02-05 09:51:37,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:51:37,085 INFO L225 Difference]: With dead ends: 24 [2025-02-05 09:51:37,085 INFO L226 Difference]: Without dead ends: 11 [2025-02-05 09:51:37,089 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-05 09:51:37,093 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 09:51:37,094 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 27 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 09:51:37,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2025-02-05 09:51:37,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2025-02-05 09:51:37,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:51:37,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 14 transitions. [2025-02-05 09:51:37,121 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 14 transitions. Word has length 8 [2025-02-05 09:51:37,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:51:37,122 INFO L471 AbstractCegarLoop]: Abstraction has 11 states and 14 transitions. [2025-02-05 09:51:37,123 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:51:37,123 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 14 transitions. [2025-02-05 09:51:37,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-02-05 09:51:37,123 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:51:37,123 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:51:37,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-05 09:51:37,124 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:51:37,124 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:51:37,124 INFO L85 PathProgramCache]: Analyzing trace with hash 2096543755, now seen corresponding path program 1 times [2025-02-05 09:51:37,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:51:37,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633897905] [2025-02-05 09:51:37,126 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 09:51:37,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:51:37,137 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-05 09:51:37,146 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-05 09:51:37,150 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 09:51:37,151 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:51:37,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-05 09:51:37,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:51:37,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633897905] [2025-02-05 09:51:37,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633897905] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:51:37,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661785166] [2025-02-05 09:51:37,250 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 09:51:37,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:51:37,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:51:37,254 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 09:51:37,256 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 09:51:37,311 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-02-05 09:51:37,342 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-02-05 09:51:37,342 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 09:51:37,342 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:51:37,344 INFO L256 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-05 09:51:37,347 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 09:51:37,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-05 09:51:37,371 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-05 09:51:37,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661785166] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-05 09:51:37,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-05 09:51:37,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2025-02-05 09:51:37,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626696455] [2025-02-05 09:51:37,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-05 09:51:37,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-05 09:51:37,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:51:37,373 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-05 09:51:37,374 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-05 09:51:37,374 INFO L87 Difference]: Start difference. First operand 11 states and 14 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:51:37,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:51:37,392 INFO L93 Difference]: Finished difference Result 19 states and 25 transitions. [2025-02-05 09:51:37,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-05 09:51:37,393 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-02-05 09:51:37,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:51:37,394 INFO L225 Difference]: With dead ends: 19 [2025-02-05 09:51:37,394 INFO L226 Difference]: Without dead ends: 13 [2025-02-05 09:51:37,394 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-05 09:51:37,395 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 09:51:37,395 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 09:51:37,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2025-02-05 09:51:37,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2025-02-05 09:51:37,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:51:37,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 16 transitions. [2025-02-05 09:51:37,399 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 16 transitions. Word has length 9 [2025-02-05 09:51:37,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:51:37,400 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 16 transitions. [2025-02-05 09:51:37,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:51:37,401 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 16 transitions. [2025-02-05 09:51:37,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2025-02-05 09:51:37,401 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:51:37,401 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:51:37,409 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 09:51:37,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:51:37,602 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:51:37,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:51:37,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1385588235, now seen corresponding path program 1 times [2025-02-05 09:51:37,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:51:37,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163315213] [2025-02-05 09:51:37,603 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 09:51:37,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:51:37,620 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-05 09:51:37,639 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-05 09:51:37,642 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 09:51:37,642 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:51:37,745 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-05 09:51:37,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:51:37,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163315213] [2025-02-05 09:51:37,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163315213] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:51:37,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453954236] [2025-02-05 09:51:37,746 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-05 09:51:37,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:51:37,746 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:51:37,748 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 09:51:37,750 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 09:51:37,804 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 11 statements into 1 equivalence classes. [2025-02-05 09:51:37,835 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 11 of 11 statements. [2025-02-05 09:51:37,835 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 09:51:37,835 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:51:37,837 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-05 09:51:37,838 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 09:51:37,867 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-05 09:51:37,870 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 09:51:37,900 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-05 09:51:37,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453954236] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 09:51:37,903 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 09:51:37,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-02-05 09:51:37,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604090721] [2025-02-05 09:51:37,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 09:51:37,904 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-05 09:51:37,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:51:37,905 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-05 09:51:37,905 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-05 09:51:37,905 INFO L87 Difference]: Start difference. First operand 13 states and 16 transitions. Second operand has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:51:37,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:51:37,924 INFO L93 Difference]: Finished difference Result 25 states and 33 transitions. [2025-02-05 09:51:37,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-05 09:51:37,924 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2025-02-05 09:51:37,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:51:37,925 INFO L225 Difference]: With dead ends: 25 [2025-02-05 09:51:37,925 INFO L226 Difference]: Without dead ends: 16 [2025-02-05 09:51:37,925 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-05 09:51:37,926 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 09:51:37,926 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 09:51:37,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2025-02-05 09:51:37,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2025-02-05 09:51:37,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 15 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:51:37,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2025-02-05 09:51:37,933 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 11 [2025-02-05 09:51:37,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:51:37,933 INFO L471 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2025-02-05 09:51:37,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 7 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:51:37,933 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2025-02-05 09:51:37,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-02-05 09:51:37,934 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:51:37,934 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:51:37,942 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 09:51:38,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:51:38,139 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:51:38,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:51:38,140 INFO L85 PathProgramCache]: Analyzing trace with hash -503263108, now seen corresponding path program 2 times [2025-02-05 09:51:38,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:51:38,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100642337] [2025-02-05 09:51:38,140 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 09:51:38,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:51:38,167 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-02-05 09:51:38,199 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-02-05 09:51:38,199 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 09:51:38,200 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:51:38,276 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-02-05 09:51:38,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:51:38,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100642337] [2025-02-05 09:51:38,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100642337] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:51:38,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89660896] [2025-02-05 09:51:38,277 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 09:51:38,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:51:38,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:51:38,279 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 09:51:38,280 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 09:51:38,327 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 14 statements into 2 equivalence classes. [2025-02-05 09:51:38,349 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 14 of 14 statements. [2025-02-05 09:51:38,349 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 09:51:38,350 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:51:38,351 INFO L256 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-05 09:51:38,352 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 09:51:38,404 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-05 09:51:38,404 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 09:51:38,486 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-05 09:51:38,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89660896] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 09:51:38,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 09:51:38,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2025-02-05 09:51:38,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869607431] [2025-02-05 09:51:38,486 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 09:51:38,487 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-05 09:51:38,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:51:38,487 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-05 09:51:38,490 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2025-02-05 09:51:38,490 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:51:38,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:51:38,546 INFO L93 Difference]: Finished difference Result 33 states and 46 transitions. [2025-02-05 09:51:38,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-05 09:51:38,547 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2025-02-05 09:51:38,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:51:38,547 INFO L225 Difference]: With dead ends: 33 [2025-02-05 09:51:38,547 INFO L226 Difference]: Without dead ends: 24 [2025-02-05 09:51:38,548 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2025-02-05 09:51:38,549 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 09:51:38,549 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 09:51:38,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2025-02-05 09:51:38,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2025-02-05 09:51:38,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.173913043478261) internal successors, (27), 23 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:51:38,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2025-02-05 09:51:38,553 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 14 [2025-02-05 09:51:38,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:51:38,554 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2025-02-05 09:51:38,554 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.7857142857142858) internal successors, (25), 14 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:51:38,554 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2025-02-05 09:51:38,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2025-02-05 09:51:38,554 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:51:38,555 INFO L218 NwaCegarLoop]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:51:38,561 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-02-05 09:51:38,755 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:51:38,755 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:51:38,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:51:38,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1989761052, now seen corresponding path program 3 times [2025-02-05 09:51:38,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:51:38,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236515603] [2025-02-05 09:51:38,756 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 09:51:38,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:51:38,771 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 22 statements into 6 equivalence classes. [2025-02-05 09:51:38,785 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 14 of 22 statements. [2025-02-05 09:51:38,786 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-05 09:51:38,786 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:51:38,843 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2025-02-05 09:51:38,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:51:38,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236515603] [2025-02-05 09:51:38,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236515603] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:51:38,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207023632] [2025-02-05 09:51:38,844 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 09:51:38,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:51:38,845 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:51:38,846 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 09:51:38,848 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 09:51:38,905 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 22 statements into 6 equivalence classes. [2025-02-05 09:51:38,924 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 14 of 22 statements. [2025-02-05 09:51:38,925 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-05 09:51:38,925 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:51:38,926 INFO L256 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-05 09:51:38,927 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 09:51:38,949 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2025-02-05 09:51:38,950 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 09:51:38,979 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2025-02-05 09:51:38,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207023632] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 09:51:38,979 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 09:51:38,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2025-02-05 09:51:38,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058435566] [2025-02-05 09:51:38,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 09:51:38,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-05 09:51:38,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:51:38,980 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-05 09:51:38,981 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2025-02-05 09:51:38,981 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:51:39,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:51:39,019 INFO L93 Difference]: Finished difference Result 40 states and 52 transitions. [2025-02-05 09:51:39,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-05 09:51:39,019 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2025-02-05 09:51:39,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:51:39,020 INFO L225 Difference]: With dead ends: 40 [2025-02-05 09:51:39,020 INFO L226 Difference]: Without dead ends: 32 [2025-02-05 09:51:39,021 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2025-02-05 09:51:39,021 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 09:51:39,021 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 09:51:39,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2025-02-05 09:51:39,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2025-02-05 09:51:39,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.1290322580645162) internal successors, (35), 31 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:51:39,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2025-02-05 09:51:39,026 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 22 [2025-02-05 09:51:39,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:51:39,026 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2025-02-05 09:51:39,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.0) internal successors, (18), 9 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:51:39,026 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2025-02-05 09:51:39,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-02-05 09:51:39,027 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:51:39,027 INFO L218 NwaCegarLoop]: trace histogram [10, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:51:39,034 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 09:51:39,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:51:39,232 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:51:39,232 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:51:39,233 INFO L85 PathProgramCache]: Analyzing trace with hash -502270052, now seen corresponding path program 4 times [2025-02-05 09:51:39,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:51:39,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466295372] [2025-02-05 09:51:39,233 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 09:51:39,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:51:39,251 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 30 statements into 2 equivalence classes. [2025-02-05 09:51:39,270 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-02-05 09:51:39,270 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 09:51:39,270 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:51:39,554 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2025-02-05 09:51:39,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:51:39,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466295372] [2025-02-05 09:51:39,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466295372] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:51:39,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326331612] [2025-02-05 09:51:39,554 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 09:51:39,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:51:39,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:51:39,556 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 09:51:39,558 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 09:51:39,622 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 30 statements into 2 equivalence classes. [2025-02-05 09:51:39,655 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 30 of 30 statements. [2025-02-05 09:51:39,656 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 09:51:39,656 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:51:39,659 INFO L256 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-05 09:51:39,661 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 09:51:39,698 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2025-02-05 09:51:39,698 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 09:51:39,957 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2025-02-05 09:51:39,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326331612] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 09:51:39,957 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 09:51:39,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2025-02-05 09:51:39,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85988171] [2025-02-05 09:51:39,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 09:51:39,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-05 09:51:39,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:51:39,959 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-05 09:51:39,959 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-02-05 09:51:39,959 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand has 25 states, 25 states have (on average 1.36) internal successors, (34), 25 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:51:39,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:51:39,991 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2025-02-05 09:51:39,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-02-05 09:51:39,992 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.36) internal successors, (34), 25 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2025-02-05 09:51:39,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:51:39,993 INFO L225 Difference]: With dead ends: 63 [2025-02-05 09:51:39,993 INFO L226 Difference]: Without dead ends: 44 [2025-02-05 09:51:39,994 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-02-05 09:51:39,994 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 09:51:39,994 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 62 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 09:51:39,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2025-02-05 09:51:39,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2025-02-05 09:51:40,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.0930232558139534) internal successors, (47), 43 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:51:40,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2025-02-05 09:51:40,003 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 30 [2025-02-05 09:51:40,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:51:40,003 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2025-02-05 09:51:40,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.36) internal successors, (34), 25 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:51:40,005 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2025-02-05 09:51:40,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2025-02-05 09:51:40,005 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:51:40,006 INFO L218 NwaCegarLoop]: trace histogram [22, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:51:40,015 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 09:51:40,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:51:40,206 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:51:40,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:51:40,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1957279012, now seen corresponding path program 5 times [2025-02-05 09:51:40,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:51:40,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869099025] [2025-02-05 09:51:40,207 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 09:51:40,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:51:40,236 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 42 statements into 12 equivalence classes. [2025-02-05 09:51:40,304 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) and asserted 42 of 42 statements. [2025-02-05 09:51:40,304 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2025-02-05 09:51:40,304 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:51:40,978 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2025-02-05 09:51:40,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:51:40,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869099025] [2025-02-05 09:51:40,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869099025] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:51:40,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928220177] [2025-02-05 09:51:40,979 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-05 09:51:40,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:51:40,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:51:40,982 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 09:51:40,984 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 09:51:41,062 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 42 statements into 12 equivalence classes. [2025-02-05 09:52:10,890 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) and asserted 42 of 42 statements. [2025-02-05 09:52:10,891 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2025-02-05 09:52:10,891 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:52:10,909 INFO L256 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-05 09:52:10,911 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 09:52:11,053 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2025-02-05 09:52:11,054 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 09:52:11,240 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2025-02-05 09:52:11,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928220177] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 09:52:11,241 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 09:52:11,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 9, 9] total 39 [2025-02-05 09:52:11,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997041807] [2025-02-05 09:52:11,241 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 09:52:11,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2025-02-05 09:52:11,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:52:11,243 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2025-02-05 09:52:11,244 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=419, Invalid=1063, Unknown=0, NotChecked=0, Total=1482 [2025-02-05 09:52:11,245 INFO L87 Difference]: Start difference. First operand 44 states and 47 transitions. Second operand has 39 states, 39 states have (on average 1.3333333333333333) internal successors, (52), 39 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:52:11,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:52:11,359 INFO L93 Difference]: Finished difference Result 80 states and 102 transitions. [2025-02-05 09:52:11,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2025-02-05 09:52:11,360 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 1.3333333333333333) internal successors, (52), 39 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2025-02-05 09:52:11,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:52:11,361 INFO L225 Difference]: With dead ends: 80 [2025-02-05 09:52:11,362 INFO L226 Difference]: Without dead ends: 61 [2025-02-05 09:52:11,363 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=419, Invalid=1063, Unknown=0, NotChecked=0, Total=1482 [2025-02-05 09:52:11,364 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 09:52:11,365 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 74 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 09:52:11,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2025-02-05 09:52:11,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2025-02-05 09:52:11,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 60 states have (on average 1.0666666666666667) internal successors, (64), 60 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:52:11,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 64 transitions. [2025-02-05 09:52:11,376 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 64 transitions. Word has length 42 [2025-02-05 09:52:11,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:52:11,376 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 64 transitions. [2025-02-05 09:52:11,376 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 1.3333333333333333) internal successors, (52), 39 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:52:11,377 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 64 transitions. [2025-02-05 09:52:11,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2025-02-05 09:52:11,378 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:52:11,378 INFO L218 NwaCegarLoop]: trace histogram [23, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:52:11,399 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 09:52:11,578 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,SelfDestructingSolverStorable6 [2025-02-05 09:52:11,579 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:52:11,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:52:11,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1841168085, now seen corresponding path program 6 times [2025-02-05 09:52:11,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:52:11,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688888859] [2025-02-05 09:52:11,579 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 09:52:11,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:52:11,610 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 59 statements into 13 equivalence classes. [2025-02-05 09:52:11,792 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) and asserted 59 of 59 statements. [2025-02-05 09:52:11,792 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2025-02-05 09:52:11,792 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:52:12,515 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2025-02-05 09:52:12,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:52:12,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688888859] [2025-02-05 09:52:12,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688888859] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:52:12,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307954888] [2025-02-05 09:52:12,516 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-05 09:52:12,516 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:52:12,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:52:12,518 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 09:52:12,520 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 09:52:12,620 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 59 statements into 13 equivalence classes. [2025-02-05 09:52:17,843 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) and asserted 59 of 59 statements. [2025-02-05 09:52:17,844 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2025-02-05 09:52:17,844 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:52:17,852 INFO L256 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 31 conjuncts are in the unsatisfiable core [2025-02-05 09:52:17,854 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 09:52:17,927 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2025-02-05 09:52:17,927 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 09:52:18,776 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 0 proven. 304 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2025-02-05 09:52:18,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307954888] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 09:52:18,777 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 09:52:18,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 27] total 52 [2025-02-05 09:52:18,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416463308] [2025-02-05 09:52:18,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 09:52:18,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2025-02-05 09:52:18,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:52:18,780 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2025-02-05 09:52:18,781 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2025-02-05 09:52:18,782 INFO L87 Difference]: Start difference. First operand 61 states and 64 transitions. Second operand has 52 states, 52 states have (on average 1.2307692307692308) internal successors, (64), 52 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:52:18,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:52:18,853 INFO L93 Difference]: Finished difference Result 121 states and 151 transitions. [2025-02-05 09:52:18,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2025-02-05 09:52:18,854 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.2307692307692308) internal successors, (64), 52 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2025-02-05 09:52:18,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:52:18,855 INFO L225 Difference]: With dead ends: 121 [2025-02-05 09:52:18,855 INFO L226 Difference]: Without dead ends: 86 [2025-02-05 09:52:18,856 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2025-02-05 09:52:18,857 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-05 09:52:18,857 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 48 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-05 09:52:18,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2025-02-05 09:52:18,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2025-02-05 09:52:18,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.0470588235294118) internal successors, (89), 85 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:52:18,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 89 transitions. [2025-02-05 09:52:18,870 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 89 transitions. Word has length 59 [2025-02-05 09:52:18,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:52:18,870 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 89 transitions. [2025-02-05 09:52:18,871 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.2307692307692308) internal successors, (64), 52 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:52:18,874 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 89 transitions. [2025-02-05 09:52:18,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2025-02-05 09:52:18,876 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:52:18,876 INFO L218 NwaCegarLoop]: trace histogram [48, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:52:18,892 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 09:52:19,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:52:19,077 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:52:19,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:52:19,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1505699268, now seen corresponding path program 7 times [2025-02-05 09:52:19,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:52:19,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936293482] [2025-02-05 09:52:19,078 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 09:52:19,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:52:19,112 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 84 statements into 1 equivalence classes. [2025-02-05 09:52:19,138 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 84 of 84 statements. [2025-02-05 09:52:19,139 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 09:52:19,139 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:52:21,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1386 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2025-02-05 09:52:21,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:52:21,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936293482] [2025-02-05 09:52:21,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936293482] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:52:21,118 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701474960] [2025-02-05 09:52:21,118 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-05 09:52:21,118 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:52:21,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:52:21,121 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 09:52:21,123 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 09:52:21,250 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 84 statements into 1 equivalence classes. [2025-02-05 09:52:21,342 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 84 of 84 statements. [2025-02-05 09:52:21,342 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-05 09:52:21,342 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:52:21,347 INFO L256 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 50 conjuncts are in the unsatisfiable core [2025-02-05 09:52:21,350 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 09:52:21,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1386 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2025-02-05 09:52:21,433 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 09:52:23,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1386 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2025-02-05 09:52:23,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701474960] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 09:52:23,932 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 09:52:23,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51, 51] total 101 [2025-02-05 09:52:23,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737663410] [2025-02-05 09:52:23,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 09:52:23,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 101 states [2025-02-05 09:52:23,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:52:23,938 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 101 interpolants. [2025-02-05 09:52:23,941 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2025-02-05 09:52:23,942 INFO L87 Difference]: Start difference. First operand 86 states and 89 transitions. Second operand has 101 states, 101 states have (on average 1.0891089108910892) internal successors, (110), 101 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:52:24,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:52:24,081 INFO L93 Difference]: Finished difference Result 171 states and 226 transitions. [2025-02-05 09:52:24,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2025-02-05 09:52:24,083 INFO L78 Accepts]: Start accepts. Automaton has has 101 states, 101 states have (on average 1.0891089108910892) internal successors, (110), 101 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 84 [2025-02-05 09:52:24,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:52:24,085 INFO L225 Difference]: With dead ends: 171 [2025-02-05 09:52:24,085 INFO L226 Difference]: Without dead ends: 136 [2025-02-05 09:52:24,089 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=5050, Invalid=5050, Unknown=0, NotChecked=0, Total=10100 [2025-02-05 09:52:24,090 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 09:52:24,091 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 72 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 09:52:24,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2025-02-05 09:52:24,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136. [2025-02-05 09:52:24,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 1.0296296296296297) internal successors, (139), 135 states have internal predecessors, (139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:52:24,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 139 transitions. [2025-02-05 09:52:24,107 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 139 transitions. Word has length 84 [2025-02-05 09:52:24,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:52:24,107 INFO L471 AbstractCegarLoop]: Abstraction has 136 states and 139 transitions. [2025-02-05 09:52:24,108 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 101 states, 101 states have (on average 1.0891089108910892) internal successors, (110), 101 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:52:24,108 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 139 transitions. [2025-02-05 09:52:24,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2025-02-05 09:52:24,109 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:52:24,109 INFO L218 NwaCegarLoop]: trace histogram [98, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:52:24,120 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 09:52:24,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:52:24,316 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:52:24,317 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:52:24,317 INFO L85 PathProgramCache]: Analyzing trace with hash 64633116, now seen corresponding path program 8 times [2025-02-05 09:52:24,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:52:24,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571373897] [2025-02-05 09:52:24,317 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 09:52:24,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:52:24,368 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 134 statements into 2 equivalence classes. [2025-02-05 09:52:24,440 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 134 of 134 statements. [2025-02-05 09:52:24,440 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 09:52:24,440 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:52:30,124 INFO L134 CoverageAnalysis]: Checked inductivity of 5061 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2025-02-05 09:52:30,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:52:30,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571373897] [2025-02-05 09:52:30,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571373897] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:52:30,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863024214] [2025-02-05 09:52:30,124 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-05 09:52:30,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:52:30,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:52:30,126 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 09:52:30,127 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 09:52:30,306 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 134 statements into 2 equivalence classes. [2025-02-05 09:52:30,425 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 134 of 134 statements. [2025-02-05 09:52:30,425 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-05 09:52:30,425 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:52:30,430 INFO L256 TraceCheckSpWp]: Trace formula consists of 1150 conjuncts, 100 conjuncts are in the unsatisfiable core [2025-02-05 09:52:30,435 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 09:52:30,613 INFO L134 CoverageAnalysis]: Checked inductivity of 5061 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2025-02-05 09:52:30,613 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 09:52:39,698 INFO L134 CoverageAnalysis]: Checked inductivity of 5061 backedges. 0 proven. 4851 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2025-02-05 09:52:39,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863024214] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 09:52:39,699 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 09:52:39,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [101, 101, 101] total 201 [2025-02-05 09:52:39,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186085285] [2025-02-05 09:52:39,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 09:52:39,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 201 states [2025-02-05 09:52:39,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:52:39,720 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 201 interpolants. [2025-02-05 09:52:39,726 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20100, Invalid=20100, Unknown=0, NotChecked=0, Total=40200 [2025-02-05 09:52:39,726 INFO L87 Difference]: Start difference. First operand 136 states and 139 transitions. Second operand has 201 states, 201 states have (on average 1.044776119402985) internal successors, (210), 201 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:52:40,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:52:40,089 INFO L93 Difference]: Finished difference Result 271 states and 376 transitions. [2025-02-05 09:52:40,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2025-02-05 09:52:40,090 INFO L78 Accepts]: Start accepts. Automaton has has 201 states, 201 states have (on average 1.044776119402985) internal successors, (210), 201 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2025-02-05 09:52:40,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:52:40,091 INFO L225 Difference]: With dead ends: 271 [2025-02-05 09:52:40,091 INFO L226 Difference]: Without dead ends: 236 [2025-02-05 09:52:40,095 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 392 ImplicationChecksByTransitivity, 12.0s TimeCoverageRelationStatistics Valid=20100, Invalid=20100, Unknown=0, NotChecked=0, Total=40200 [2025-02-05 09:52:40,096 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 09:52:40,096 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 102 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 09:52:40,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2025-02-05 09:52:40,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2025-02-05 09:52:40,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 235 states have (on average 1.0170212765957447) internal successors, (239), 235 states have internal predecessors, (239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:52:40,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 239 transitions. [2025-02-05 09:52:40,121 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 239 transitions. Word has length 134 [2025-02-05 09:52:40,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:52:40,122 INFO L471 AbstractCegarLoop]: Abstraction has 236 states and 239 transitions. [2025-02-05 09:52:40,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 201 states, 201 states have (on average 1.044776119402985) internal successors, (210), 201 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:52:40,122 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 239 transitions. [2025-02-05 09:52:40,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2025-02-05 09:52:40,125 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:52:40,125 INFO L218 NwaCegarLoop]: trace histogram [198, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:52:40,134 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 09:52:40,325 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:52:40,326 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:52:40,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:52:40,326 INFO L85 PathProgramCache]: Analyzing trace with hash 613322460, now seen corresponding path program 9 times [2025-02-05 09:52:40,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:52:40,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972155052] [2025-02-05 09:52:40,326 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 09:52:40,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:52:40,407 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 234 statements into 100 equivalence classes. [2025-02-05 09:52:40,476 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) and asserted 50 of 234 statements. [2025-02-05 09:52:40,476 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2025-02-05 09:52:40,476 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:52:40,729 INFO L134 CoverageAnalysis]: Checked inductivity of 19911 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 19806 trivial. 0 not checked. [2025-02-05 09:52:40,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:52:40,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972155052] [2025-02-05 09:52:40,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972155052] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:52:40,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1728994998] [2025-02-05 09:52:40,730 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-05 09:52:40,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:52:40,730 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:52:40,732 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 09:52:40,735 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 09:52:41,032 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 234 statements into 100 equivalence classes. [2025-02-05 09:52:42,111 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) and asserted 50 of 234 statements. [2025-02-05 09:52:42,111 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2025-02-05 09:52:42,111 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:52:42,119 INFO L256 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-05 09:52:42,124 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 09:52:42,152 INFO L134 CoverageAnalysis]: Checked inductivity of 19911 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 19806 trivial. 0 not checked. [2025-02-05 09:52:42,152 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-05 09:52:42,396 INFO L134 CoverageAnalysis]: Checked inductivity of 19911 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 19806 trivial. 0 not checked. [2025-02-05 09:52:42,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1728994998] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-05 09:52:42,397 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-05 09:52:42,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 33 [2025-02-05 09:52:42,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659110852] [2025-02-05 09:52:42,397 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-05 09:52:42,398 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-02-05 09:52:42,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-05 09:52:42,398 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-02-05 09:52:42,399 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2025-02-05 09:52:42,399 INFO L87 Difference]: Start difference. First operand 236 states and 239 transitions. Second operand has 33 states, 33 states have (on average 1.7575757575757576) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:52:42,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-05 09:52:42,508 INFO L93 Difference]: Finished difference Result 288 states and 324 transitions. [2025-02-05 09:52:42,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-02-05 09:52:42,508 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.7575757575757576) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 234 [2025-02-05 09:52:42,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-05 09:52:42,510 INFO L225 Difference]: With dead ends: 288 [2025-02-05 09:52:42,512 INFO L226 Difference]: Without dead ends: 268 [2025-02-05 09:52:42,513 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 452 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2025-02-05 09:52:42,513 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-05 09:52:42,514 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-05 09:52:42,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2025-02-05 09:52:42,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2025-02-05 09:52:42,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 267 states have (on average 1.0149812734082397) internal successors, (271), 267 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:52:42,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 271 transitions. [2025-02-05 09:52:42,533 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 271 transitions. Word has length 234 [2025-02-05 09:52:42,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-05 09:52:42,533 INFO L471 AbstractCegarLoop]: Abstraction has 268 states and 271 transitions. [2025-02-05 09:52:42,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.7575757575757576) internal successors, (58), 33 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-05 09:52:42,534 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 271 transitions. [2025-02-05 09:52:42,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2025-02-05 09:52:42,540 INFO L210 NwaCegarLoop]: Found error trace [2025-02-05 09:52:42,540 INFO L218 NwaCegarLoop]: trace histogram [198, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-05 09:52:42,550 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 09:52:42,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:52:42,741 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-05 09:52:42,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-05 09:52:42,741 INFO L85 PathProgramCache]: Analyzing trace with hash 453577948, now seen corresponding path program 10 times [2025-02-05 09:52:42,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-05 09:52:42,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419546589] [2025-02-05 09:52:42,742 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 09:52:42,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-05 09:52:42,834 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 266 statements into 2 equivalence classes. [2025-02-05 09:52:43,048 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 266 of 266 statements. [2025-02-05 09:52:43,048 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 09:52:43,049 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:53:01,863 INFO L134 CoverageAnalysis]: Checked inductivity of 20631 backedges. 0 proven. 19701 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2025-02-05 09:53:01,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-05 09:53:01,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419546589] [2025-02-05 09:53:01,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419546589] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-05 09:53:01,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327019102] [2025-02-05 09:53:01,864 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-05 09:53:01,864 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-05 09:53:01,864 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-05 09:53:01,866 INFO L229 MonitoredProcess]: Starting monitored process 12 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 09:53:01,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-02-05 09:53:02,230 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 266 statements into 2 equivalence classes. [2025-02-05 09:53:02,459 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 266 of 266 statements. [2025-02-05 09:53:02,459 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-05 09:53:02,459 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-05 09:53:02,469 INFO L256 TraceCheckSpWp]: Trace formula consists of 2274 conjuncts, 200 conjuncts are in the unsatisfiable core [2025-02-05 09:53:02,476 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-05 09:53:02,736 INFO L134 CoverageAnalysis]: Checked inductivity of 20631 backedges. 0 proven. 19701 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2025-02-05 09:53:02,737 INFO L312 TraceCheckSpWp]: Computing backward predicates...