./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 48c9605d Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/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-?-48c9605-m [2025-02-07 16:43:16,266 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-07 16:43:16,321 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-07 16:43:16,325 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-07 16:43:16,325 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-07 16:43:16,344 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-07 16:43:16,345 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-07 16:43:16,345 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-07 16:43:16,345 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-07 16:43:16,345 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-07 16:43:16,345 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-07 16:43:16,345 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-07 16:43:16,345 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-07 16:43:16,345 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-07 16:43:16,345 INFO L153 SettingsManager]: * Use SBE=true [2025-02-07 16:43:16,345 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-07 16:43:16,345 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-07 16:43:16,346 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-07 16:43:16,346 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-07 16:43:16,346 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-07 16:43:16,346 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-07 16:43:16,346 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-07 16:43:16,346 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-07 16:43:16,346 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-07 16:43:16,346 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-07 16:43:16,346 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-07 16:43:16,346 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-07 16:43:16,346 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-07 16:43:16,346 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-07 16:43:16,346 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-07 16:43:16,346 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-07 16:43:16,346 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-07 16:43:16,346 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 16:43:16,346 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-07 16:43:16,346 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-07 16:43:16,346 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-07 16:43:16,346 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-07 16:43:16,347 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-07 16:43:16,347 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-07 16:43:16,347 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-07 16:43:16,347 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-07 16:43:16,347 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-07 16:43:16,347 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-07 16:43:16,347 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 [2025-02-07 16:43:16,578 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-07 16:43:16,584 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-07 16:43:16,585 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-07 16:43:16,587 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-07 16:43:16,587 INFO L274 PluginConnector]: CDTParser initialized [2025-02-07 16:43:16,588 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_copy2_ground-2.i [2025-02-07 16:43:17,751 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/24ea76f1f/d1f424f66ab545a2a85e90f903032c51/FLAG3115cd1dc [2025-02-07 16:43:17,970 INFO L384 CDTParser]: Found 1 translation units. [2025-02-07 16:43:17,970 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-examples/standard_copy2_ground-2.i [2025-02-07 16:43:17,995 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/24ea76f1f/d1f424f66ab545a2a85e90f903032c51/FLAG3115cd1dc [2025-02-07 16:43:18,008 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/24ea76f1f/d1f424f66ab545a2a85e90f903032c51 [2025-02-07 16:43:18,010 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-07 16:43:18,011 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-07 16:43:18,011 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-07 16:43:18,012 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-07 16:43:18,014 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-07 16:43:18,015 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 04:43:18" (1/1) ... [2025-02-07 16:43:18,015 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6da76ceb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:43:18, skipping insertion in model container [2025-02-07 16:43:18,015 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 04:43:18" (1/1) ... [2025-02-07 16:43:18,025 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-07 16:43:18,117 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] [2025-02-07 16:43:18,127 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 16:43:18,134 INFO L200 MainTranslator]: Completed pre-run [2025-02-07 16:43:18,143 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] [2025-02-07 16:43:18,151 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 16:43:18,164 INFO L204 MainTranslator]: Completed translation [2025-02-07 16:43:18,164 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:43:18 WrapperNode [2025-02-07 16:43:18,165 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-07 16:43:18,166 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-07 16:43:18,166 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-07 16:43:18,166 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-07 16:43:18,171 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:43:18" (1/1) ... [2025-02-07 16:43:18,178 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:43:18" (1/1) ... [2025-02-07 16:43:18,190 INFO L138 Inliner]: procedures = 16, calls = 23, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 68 [2025-02-07 16:43:18,190 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-07 16:43:18,191 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-07 16:43:18,191 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-07 16:43:18,191 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-07 16:43:18,196 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:43:18" (1/1) ... [2025-02-07 16:43:18,196 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:43:18" (1/1) ... [2025-02-07 16:43:18,197 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:43:18" (1/1) ... [2025-02-07 16:43:18,210 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]. [2025-02-07 16:43:18,210 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:43:18" (1/1) ... [2025-02-07 16:43:18,211 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:43:18" (1/1) ... [2025-02-07 16:43:18,218 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:43:18" (1/1) ... [2025-02-07 16:43:18,219 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:43:18" (1/1) ... [2025-02-07 16:43:18,219 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:43:18" (1/1) ... [2025-02-07 16:43:18,220 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:43:18" (1/1) ... [2025-02-07 16:43:18,225 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-07 16:43:18,225 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-07 16:43:18,225 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-07 16:43:18,225 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-07 16:43:18,226 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:43:18" (1/1) ... [2025-02-07 16:43:18,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 16:43:18,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:43:18,256 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-02-07 16:43:18,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-02-07 16:43:18,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-07 16:43:18,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-07 16:43:18,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-07 16:43:18,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-07 16:43:18,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-07 16:43:18,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-07 16:43:18,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-07 16:43:18,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-07 16:43:18,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-07 16:43:18,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-02-07 16:43:18,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-07 16:43:18,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-07 16:43:18,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-07 16:43:18,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-07 16:43:18,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-07 16:43:18,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-02-07 16:43:18,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-07 16:43:18,343 INFO L257 CfgBuilder]: Building ICFG [2025-02-07 16:43:18,345 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-07 16:43:18,470 INFO L1324 $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; [2025-02-07 16:43:18,475 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2025-02-07 16:43:18,475 INFO L308 CfgBuilder]: Performing block encoding [2025-02-07 16:43:18,481 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-07 16:43:18,482 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-07 16:43:18,482 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 04:43:18 BoogieIcfgContainer [2025-02-07 16:43:18,482 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-07 16:43:18,484 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-07 16:43:18,484 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-07 16:43:18,488 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-07 16:43:18,488 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 04:43:18" (1/3) ... [2025-02-07 16:43:18,488 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@185b0660 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 04:43:18, skipping insertion in model container [2025-02-07 16:43:18,489 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:43:18" (2/3) ... [2025-02-07 16:43:18,489 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@185b0660 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 04:43:18, skipping insertion in model container [2025-02-07 16:43:18,489 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 04:43:18" (3/3) ... [2025-02-07 16:43:18,490 INFO L128 eAbstractionObserver]: Analyzing ICFG standard_copy2_ground-2.i [2025-02-07 16:43:18,500 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-07 16:43:18,506 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG standard_copy2_ground-2.i that has 1 procedures, 12 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2025-02-07 16:43:18,542 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-07 16:43:18,553 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;@122865b8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-07 16:43:18,553 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-07 16:43:18,556 INFO L276 IsEmpty]: Start isEmpty. Operand has 12 states, 10 states have (on average 1.6) internal successors, (16), 11 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) [2025-02-07 16:43:18,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-02-07 16:43:18,560 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:43:18,560 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:43:18,560 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:43:18,564 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:43:18,564 INFO L85 PathProgramCache]: Analyzing trace with hash -824802805, now seen corresponding path program 1 times [2025-02-07 16:43:18,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:43:18,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456458577] [2025-02-07 16:43:18,571 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:43:18,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:43:18,653 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-02-07 16:43:18,666 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-02-07 16:43:18,667 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:43:18,667 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:43:18,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 16:43:18,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:43:18,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456458577] [2025-02-07 16:43:18,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456458577] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 16:43:18,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 16:43:18,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-07 16:43:18,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535586231] [2025-02-07 16:43:18,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 16:43:18,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-07 16:43:18,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:43:18,754 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-07 16:43:18,755 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-07 16:43:18,756 INFO L87 Difference]: Start difference. First operand has 12 states, 10 states have (on average 1.6) internal successors, (16), 11 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) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:43:18,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:43:18,780 INFO L93 Difference]: Finished difference Result 23 states and 31 transitions. [2025-02-07 16:43:18,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-07 16:43:18,782 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 7 [2025-02-07 16:43:18,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:43:18,787 INFO L225 Difference]: With dead ends: 23 [2025-02-07 16:43:18,787 INFO L226 Difference]: Without dead ends: 10 [2025-02-07 16:43:18,789 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-07 16:43:18,793 INFO L435 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 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 [2025-02-07 16:43:18,794 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 16:43:18,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2025-02-07 16:43:18,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2025-02-07 16:43:18,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 9 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:43:18,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions. [2025-02-07 16:43:18,814 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 13 transitions. Word has length 7 [2025-02-07 16:43:18,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:43:18,815 INFO L471 AbstractCegarLoop]: Abstraction has 10 states and 13 transitions. [2025-02-07 16:43:18,815 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:43:18,815 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 13 transitions. [2025-02-07 16:43:18,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-02-07 16:43:18,815 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:43:18,815 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:43:18,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-07 16:43:18,816 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:43:18,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:43:18,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1147557596, now seen corresponding path program 1 times [2025-02-07 16:43:18,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:43:18,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701964320] [2025-02-07 16:43:18,817 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:43:18,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:43:18,838 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-07 16:43:18,853 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-07 16:43:18,853 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:43:18,854 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:43:18,910 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-02-07 16:43:18,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:43:18,910 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701964320] [2025-02-07 16:43:18,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701964320] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:43:18,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133717920] [2025-02-07 16:43:18,911 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:43:18,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:43:18,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:43:18,919 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 16:43:18,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-02-07 16:43:18,975 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-02-07 16:43:18,993 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-02-07 16:43:18,993 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:43:18,994 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:43:18,995 INFO L256 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 2 conjuncts are in the unsatisfiable core [2025-02-07 16:43:18,997 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:43:19,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-02-07 16:43:19,012 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-02-07 16:43:19,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133717920] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 16:43:19,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-02-07 16:43:19,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2025-02-07 16:43:19,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840809285] [2025-02-07 16:43:19,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 16:43:19,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-07 16:43:19,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:43:19,013 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-07 16:43:19,014 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-07 16:43:19,014 INFO L87 Difference]: Start difference. First operand 10 states and 13 transitions. 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) [2025-02-07 16:43:19,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:43:19,030 INFO L93 Difference]: Finished difference Result 18 states and 24 transitions. [2025-02-07 16:43:19,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-07 16:43:19,031 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 [2025-02-07 16:43:19,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:43:19,031 INFO L225 Difference]: With dead ends: 18 [2025-02-07 16:43:19,031 INFO L226 Difference]: Without dead ends: 12 [2025-02-07 16:43:19,031 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-02-07 16:43:19,032 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 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 [2025-02-07 16:43:19,032 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 16:43:19,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2025-02-07 16:43:19,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2025-02-07 16:43:19,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 11 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:43:19,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 15 transitions. [2025-02-07 16:43:19,034 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 15 transitions. Word has length 8 [2025-02-07 16:43:19,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:43:19,034 INFO L471 AbstractCegarLoop]: Abstraction has 12 states and 15 transitions. [2025-02-07 16:43:19,034 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) [2025-02-07 16:43:19,034 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 15 transitions. [2025-02-07 16:43:19,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2025-02-07 16:43:19,035 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:43:19,035 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:43:19,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-02-07 16:43:19,239 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 [2025-02-07 16:43:19,239 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:43:19,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:43:19,239 INFO L85 PathProgramCache]: Analyzing trace with hash -57043812, now seen corresponding path program 1 times [2025-02-07 16:43:19,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:43:19,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607636428] [2025-02-07 16:43:19,240 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:43:19,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:43:19,247 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-07 16:43:19,251 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-07 16:43:19,251 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:43:19,251 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:43:19,319 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-07 16:43:19,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:43:19,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607636428] [2025-02-07 16:43:19,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607636428] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:43:19,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198342570] [2025-02-07 16:43:19,319 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:43:19,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:43:19,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:43:19,325 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 16:43:19,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-02-07 16:43:19,380 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 10 statements into 1 equivalence classes. [2025-02-07 16:43:19,400 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 10 of 10 statements. [2025-02-07 16:43:19,400 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:43:19,400 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:43:19,401 INFO L256 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-07 16:43:19,402 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:43:19,415 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-07 16:43:19,415 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:43:19,432 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-07 16:43:19,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198342570] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:43:19,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:43:19,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2025-02-07 16:43:19,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993105384] [2025-02-07 16:43:19,433 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:43:19,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-02-07 16:43:19,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:43:19,434 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-02-07 16:43:19,434 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-02-07 16:43:19,434 INFO L87 Difference]: Start difference. First operand 12 states and 15 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:43:19,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:43:19,444 INFO L93 Difference]: Finished difference Result 24 states and 32 transitions. [2025-02-07 16:43:19,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-07 16:43:19,445 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2025-02-07 16:43:19,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:43:19,445 INFO L225 Difference]: With dead ends: 24 [2025-02-07 16:43:19,445 INFO L226 Difference]: Without dead ends: 15 [2025-02-07 16:43:19,445 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2025-02-07 16:43:19,446 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 16:43:19,446 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 16:43:19,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2025-02-07 16:43:19,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2025-02-07 16:43:19,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 14 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) [2025-02-07 16:43:19,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2025-02-07 16:43:19,452 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 10 [2025-02-07 16:43:19,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:43:19,452 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2025-02-07 16:43:19,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:43:19,453 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2025-02-07 16:43:19,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2025-02-07 16:43:19,453 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:43:19,453 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:43:19,462 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-02-07 16:43:19,653 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 [2025-02-07 16:43:19,654 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:43:19,654 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:43:19,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1783155787, now seen corresponding path program 2 times [2025-02-07 16:43:19,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:43:19,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394834770] [2025-02-07 16:43:19,656 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 16:43:19,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:43:19,672 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-02-07 16:43:19,696 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-02-07 16:43:19,696 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 16:43:19,696 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:43:19,777 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-02-07 16:43:19,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:43:19,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394834770] [2025-02-07 16:43:19,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394834770] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:43:19,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1863627796] [2025-02-07 16:43:19,778 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 16:43:19,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:43:19,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:43:19,783 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 16:43:19,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-02-07 16:43:19,828 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 13 statements into 2 equivalence classes. [2025-02-07 16:43:19,847 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 13 of 13 statements. [2025-02-07 16:43:19,847 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 16:43:19,847 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:43:19,847 INFO L256 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-07 16:43:19,848 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:43:19,902 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-07 16:43:19,903 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:43:19,959 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-02-07 16:43:19,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1863627796] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:43:19,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:43:19,960 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 14 [2025-02-07 16:43:19,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043518658] [2025-02-07 16:43:19,960 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:43:19,960 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-02-07 16:43:19,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:43:19,961 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-02-07 16:43:19,961 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2025-02-07 16:43:19,961 INFO L87 Difference]: Start difference. First operand 15 states and 18 transitions. Second operand has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:43:19,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:43:19,989 INFO L93 Difference]: Finished difference Result 32 states and 45 transitions. [2025-02-07 16:43:19,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-02-07 16:43:19,989 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2025-02-07 16:43:19,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:43:19,989 INFO L225 Difference]: With dead ends: 32 [2025-02-07 16:43:19,989 INFO L226 Difference]: Without dead ends: 23 [2025-02-07 16:43:19,990 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2025-02-07 16:43:19,990 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 0 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 16:43:19,990 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 42 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 16:43:19,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2025-02-07 16:43:19,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2025-02-07 16:43:19,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:43:19,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2025-02-07 16:43:19,993 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 13 [2025-02-07 16:43:19,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:43:19,994 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2025-02-07 16:43:19,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:43:19,994 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2025-02-07 16:43:19,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2025-02-07 16:43:19,994 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:43:19,994 INFO L218 NwaCegarLoop]: trace histogram [10, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:43:20,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-02-07 16:43:20,195 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 [2025-02-07 16:43:20,195 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:43:20,196 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:43:20,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1005841173, now seen corresponding path program 3 times [2025-02-07 16:43:20,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:43:20,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151364937] [2025-02-07 16:43:20,196 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 16:43:20,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:43:20,213 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 6 equivalence classes. [2025-02-07 16:43:20,220 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 13 of 21 statements. [2025-02-07 16:43:20,221 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-07 16:43:20,221 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:43:20,267 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2025-02-07 16:43:20,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:43:20,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151364937] [2025-02-07 16:43:20,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151364937] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:43:20,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [947641288] [2025-02-07 16:43:20,267 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 16:43:20,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:43:20,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:43:20,270 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 16:43:20,271 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-02-07 16:43:20,319 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 21 statements into 6 equivalence classes. [2025-02-07 16:43:20,336 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) and asserted 13 of 21 statements. [2025-02-07 16:43:20,336 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2025-02-07 16:43:20,336 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:43:20,337 INFO L256 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-02-07 16:43:20,338 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:43:20,350 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2025-02-07 16:43:20,350 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:43:20,378 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2025-02-07 16:43:20,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [947641288] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:43:20,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:43:20,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2025-02-07 16:43:20,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672438603] [2025-02-07 16:43:20,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:43:20,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-02-07 16:43:20,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:43:20,382 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-02-07 16:43:20,382 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2025-02-07 16:43:20,382 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:43:20,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:43:20,413 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions. [2025-02-07 16:43:20,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-02-07 16:43:20,414 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 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 21 [2025-02-07 16:43:20,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:43:20,414 INFO L225 Difference]: With dead ends: 39 [2025-02-07 16:43:20,414 INFO L226 Difference]: Without dead ends: 31 [2025-02-07 16:43:20,414 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2025-02-07 16:43:20,415 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 16:43:20,415 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 16:43:20,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2025-02-07 16:43:20,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2025-02-07 16:43:20,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 30 states have (on average 1.1333333333333333) internal successors, (34), 30 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) [2025-02-07 16:43:20,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2025-02-07 16:43:20,418 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 21 [2025-02-07 16:43:20,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:43:20,418 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2025-02-07 16:43:20,418 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:43:20,418 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2025-02-07 16:43:20,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2025-02-07 16:43:20,419 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:43:20,419 INFO L218 NwaCegarLoop]: trace histogram [10, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:43:20,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-02-07 16:43:20,619 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 [2025-02-07 16:43:20,620 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:43:20,620 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:43:20,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1034128021, now seen corresponding path program 4 times [2025-02-07 16:43:20,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:43:20,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789816398] [2025-02-07 16:43:20,621 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 16:43:20,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:43:20,634 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 29 statements into 2 equivalence classes. [2025-02-07 16:43:20,645 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-02-07 16:43:20,645 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-07 16:43:20,645 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:43:20,859 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2025-02-07 16:43:20,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:43:20,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789816398] [2025-02-07 16:43:20,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789816398] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:43:20,859 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1849098909] [2025-02-07 16:43:20,859 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 16:43:20,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:43:20,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:43:20,864 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 16:43:20,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-02-07 16:43:20,923 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 29 statements into 2 equivalence classes. [2025-02-07 16:43:20,951 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 29 of 29 statements. [2025-02-07 16:43:20,951 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-07 16:43:20,951 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:43:20,955 INFO L256 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-07 16:43:20,956 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:43:20,982 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2025-02-07 16:43:20,983 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:43:21,188 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2025-02-07 16:43:21,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1849098909] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:43:21,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:43:21,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2025-02-07 16:43:21,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496059867] [2025-02-07 16:43:21,189 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:43:21,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-07 16:43:21,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:43:21,190 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-07 16:43:21,190 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-02-07 16:43:21,191 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand has 25 states, 25 states have (on average 1.32) internal successors, (33), 24 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:43:21,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:43:21,214 INFO L93 Difference]: Finished difference Result 62 states and 79 transitions. [2025-02-07 16:43:21,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-02-07 16:43:21,215 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.32) internal successors, (33), 24 states have internal predecessors, (33), 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 29 [2025-02-07 16:43:21,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:43:21,215 INFO L225 Difference]: With dead ends: 62 [2025-02-07 16:43:21,215 INFO L226 Difference]: Without dead ends: 43 [2025-02-07 16:43:21,216 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-02-07 16:43:21,216 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 16:43:21,216 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 16:43:21,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2025-02-07 16:43:21,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2025-02-07 16:43:21,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 42 states have (on average 1.0952380952380953) internal successors, (46), 42 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:43:21,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 46 transitions. [2025-02-07 16:43:21,221 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 46 transitions. Word has length 29 [2025-02-07 16:43:21,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:43:21,221 INFO L471 AbstractCegarLoop]: Abstraction has 43 states and 46 transitions. [2025-02-07 16:43:21,221 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.32) internal successors, (33), 24 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:43:21,221 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 46 transitions. [2025-02-07 16:43:21,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2025-02-07 16:43:21,222 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:43:21,222 INFO L218 NwaCegarLoop]: trace histogram [22, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:43:21,231 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-02-07 16:43:21,426 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 [2025-02-07 16:43:21,426 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:43:21,427 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:43:21,428 INFO L85 PathProgramCache]: Analyzing trace with hash 801212971, now seen corresponding path program 5 times [2025-02-07 16:43:21,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:43:21,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493241163] [2025-02-07 16:43:21,428 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-07 16:43:21,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:43:21,450 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 41 statements into 12 equivalence classes. [2025-02-07 16:43:21,525 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) and asserted 41 of 41 statements. [2025-02-07 16:43:21,525 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2025-02-07 16:43:21,525 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:43:21,998 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2025-02-07 16:43:21,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:43:21,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493241163] [2025-02-07 16:43:21,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493241163] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:43:21,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1367001123] [2025-02-07 16:43:21,998 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-07 16:43:21,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:43:21,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:43:22,000 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 16:43:22,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-02-07 16:43:22,095 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 41 statements into 12 equivalence classes. [2025-02-07 16:43:51,720 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) and asserted 41 of 41 statements. [2025-02-07 16:43:51,721 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2025-02-07 16:43:51,721 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:43:51,738 INFO L256 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-02-07 16:43:51,740 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:43:51,806 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2025-02-07 16:43:51,806 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:43:52,550 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2025-02-07 16:43:52,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1367001123] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:43:52,551 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:43:52,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2025-02-07 16:43:52,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039632085] [2025-02-07 16:43:52,551 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:43:52,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2025-02-07 16:43:52,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:43:52,552 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2025-02-07 16:43:52,553 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2025-02-07 16:43:52,553 INFO L87 Difference]: Start difference. First operand 43 states and 46 transitions. Second operand has 48 states, 48 states have (on average 1.1458333333333333) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:43:52,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:43:52,606 INFO L93 Difference]: Finished difference Result 86 states and 115 transitions. [2025-02-07 16:43:52,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-02-07 16:43:52,608 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.1458333333333333) internal successors, (55), 47 states have internal predecessors, (55), 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 41 [2025-02-07 16:43:52,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:43:52,609 INFO L225 Difference]: With dead ends: 86 [2025-02-07 16:43:52,609 INFO L226 Difference]: Without dead ends: 67 [2025-02-07 16:43:52,610 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2025-02-07 16:43:52,611 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 16:43:52,611 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 47 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 16:43:52,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2025-02-07 16:43:52,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2025-02-07 16:43:52,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 66 states have (on average 1.0606060606060606) internal successors, (70), 66 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:43:52,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2025-02-07 16:43:52,622 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 41 [2025-02-07 16:43:52,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:43:52,622 INFO L471 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2025-02-07 16:43:52,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.1458333333333333) internal successors, (55), 47 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:43:52,623 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2025-02-07 16:43:52,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2025-02-07 16:43:52,624 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:43:52,624 INFO L218 NwaCegarLoop]: trace histogram [46, 6, 6, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:43:52,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2025-02-07 16:43:52,825 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 [2025-02-07 16:43:52,826 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:43:52,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:43:52,826 INFO L85 PathProgramCache]: Analyzing trace with hash -2062527573, now seen corresponding path program 6 times [2025-02-07 16:43:52,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:43:52,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690221560] [2025-02-07 16:43:52,826 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-07 16:43:52,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:43:52,853 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 65 statements into 24 equivalence classes. [2025-02-07 16:43:52,903 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 31 of 65 statements. [2025-02-07 16:43:52,907 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-02-07 16:43:52,908 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:43:53,033 INFO L134 CoverageAnalysis]: Checked inductivity of 1123 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 1102 trivial. 0 not checked. [2025-02-07 16:43:53,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:43:53,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690221560] [2025-02-07 16:43:53,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690221560] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:43:53,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460895495] [2025-02-07 16:43:53,034 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-07 16:43:53,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:43:53,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:43:53,037 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-02-07 16:43:53,045 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-02-07 16:43:53,124 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 65 statements into 24 equivalence classes. [2025-02-07 16:43:53,353 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) and asserted 31 of 65 statements. [2025-02-07 16:43:53,353 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2025-02-07 16:43:53,353 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:43:53,355 INFO L256 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-02-07 16:43:53,357 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:43:53,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1123 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 1102 trivial. 0 not checked. [2025-02-07 16:43:53,386 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:43:53,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1123 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 1102 trivial. 0 not checked. [2025-02-07 16:43:53,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460895495] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:43:53,476 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:43:53,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2025-02-07 16:43:53,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084039427] [2025-02-07 16:43:53,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:43:53,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-02-07 16:43:53,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:43:53,477 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-02-07 16:43:53,477 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2025-02-07 16:43:53,477 INFO L87 Difference]: Start difference. First operand 67 states and 70 transitions. Second operand has 17 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 17 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) [2025-02-07 16:43:53,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:43:53,544 INFO L93 Difference]: Finished difference Result 95 states and 115 transitions. [2025-02-07 16:43:53,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-02-07 16:43:53,545 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 17 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 65 [2025-02-07 16:43:53,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:43:53,545 INFO L225 Difference]: With dead ends: 95 [2025-02-07 16:43:53,545 INFO L226 Difference]: Without dead ends: 83 [2025-02-07 16:43:53,546 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2025-02-07 16:43:53,546 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 16:43:53,546 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 16 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 16:43:53,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2025-02-07 16:43:53,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2025-02-07 16:43:53,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 82 states have (on average 1.048780487804878) internal successors, (86), 82 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:43:53,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 86 transitions. [2025-02-07 16:43:53,556 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 86 transitions. Word has length 65 [2025-02-07 16:43:53,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:43:53,556 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 86 transitions. [2025-02-07 16:43:53,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.4705882352941178) internal successors, (25), 17 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) [2025-02-07 16:43:53,556 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 86 transitions. [2025-02-07 16:43:53,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2025-02-07 16:43:53,557 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:43:53,557 INFO L218 NwaCegarLoop]: trace histogram [46, 14, 14, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:43:53,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-02-07 16:43:53,762 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 [2025-02-07 16:43:53,762 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:43:53,763 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:43:53,763 INFO L85 PathProgramCache]: Analyzing trace with hash 23532715, now seen corresponding path program 7 times [2025-02-07 16:43:53,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:43:53,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370269670] [2025-02-07 16:43:53,763 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-07 16:43:53,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:43:53,799 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 81 statements into 1 equivalence classes. [2025-02-07 16:43:53,843 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 81 of 81 statements. [2025-02-07 16:43:53,846 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:43:53,846 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:43:55,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1291 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2025-02-07 16:43:55,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:43:55,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370269670] [2025-02-07 16:43:55,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370269670] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:43:55,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922776679] [2025-02-07 16:43:55,356 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2025-02-07 16:43:55,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:43:55,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:43:55,359 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) [2025-02-07 16:43:55,361 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 [2025-02-07 16:43:55,487 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 81 statements into 1 equivalence classes. [2025-02-07 16:43:55,543 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 81 of 81 statements. [2025-02-07 16:43:55,544 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:43:55,544 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:43:55,546 INFO L256 TraceCheckSpWp]: Trace formula consists of 682 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-02-07 16:43:55,549 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:43:55,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1291 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2025-02-07 16:43:55,626 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:43:57,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1291 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2025-02-07 16:43:57,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922776679] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:43:57,667 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:43:57,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2025-02-07 16:43:57,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926031125] [2025-02-07 16:43:57,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:43:57,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2025-02-07 16:43:57,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:43:57,670 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2025-02-07 16:43:57,673 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2025-02-07 16:43:57,673 INFO L87 Difference]: Start difference. First operand 83 states and 86 transitions. Second operand has 96 states, 96 states have (on average 1.0729166666666667) internal successors, (103), 95 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:43:57,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:43:57,767 INFO L93 Difference]: Finished difference Result 166 states and 219 transitions. [2025-02-07 16:43:57,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2025-02-07 16:43:57,767 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 1.0729166666666667) internal successors, (103), 95 states have internal predecessors, (103), 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 81 [2025-02-07 16:43:57,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:43:57,768 INFO L225 Difference]: With dead ends: 166 [2025-02-07 16:43:57,768 INFO L226 Difference]: Without dead ends: 131 [2025-02-07 16:43:57,770 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2025-02-07 16:43:57,770 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 16:43:57,770 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 56 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 16:43:57,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2025-02-07 16:43:57,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2025-02-07 16:43:57,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 130 states have (on average 1.0307692307692307) internal successors, (134), 130 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:43:57,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 134 transitions. [2025-02-07 16:43:57,783 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 134 transitions. Word has length 81 [2025-02-07 16:43:57,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:43:57,784 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 134 transitions. [2025-02-07 16:43:57,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 1.0729166666666667) internal successors, (103), 95 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:43:57,784 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 134 transitions. [2025-02-07 16:43:57,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2025-02-07 16:43:57,789 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:43:57,789 INFO L218 NwaCegarLoop]: trace histogram [94, 14, 14, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:43:57,797 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-02-07 16:43:57,989 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 [2025-02-07 16:43:57,990 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:43:57,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:43:57,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1664014421, now seen corresponding path program 8 times [2025-02-07 16:43:57,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:43:57,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282098998] [2025-02-07 16:43:57,991 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 16:43:57,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:43:58,034 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 129 statements into 2 equivalence classes. [2025-02-07 16:43:58,083 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 129 of 129 statements. [2025-02-07 16:43:58,083 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 16:43:58,083 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:44:02,555 INFO L134 CoverageAnalysis]: Checked inductivity of 4675 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2025-02-07 16:44:02,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:44:02,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282098998] [2025-02-07 16:44:02,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282098998] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:44:02,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1510906138] [2025-02-07 16:44:02,556 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 16:44:02,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:44:02,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:44:02,558 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) [2025-02-07 16:44:02,564 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 [2025-02-07 16:44:02,720 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 129 statements into 2 equivalence classes. [2025-02-07 16:44:02,835 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 129 of 129 statements. [2025-02-07 16:44:02,835 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 16:44:02,835 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:44:02,844 INFO L256 TraceCheckSpWp]: Trace formula consists of 1114 conjuncts, 96 conjuncts are in the unsatisfiable core [2025-02-07 16:44:02,851 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:44:02,973 INFO L134 CoverageAnalysis]: Checked inductivity of 4675 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2025-02-07 16:44:02,973 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:44:10,343 INFO L134 CoverageAnalysis]: Checked inductivity of 4675 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2025-02-07 16:44:10,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1510906138] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:44:10,343 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:44:10,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 191 [2025-02-07 16:44:10,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390366793] [2025-02-07 16:44:10,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:44:10,344 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2025-02-07 16:44:10,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:44:10,348 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2025-02-07 16:44:10,353 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2025-02-07 16:44:10,354 INFO L87 Difference]: Start difference. First operand 131 states and 134 transitions. Second operand has 192 states, 192 states have (on average 1.0364583333333333) internal successors, (199), 191 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:44:10,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:44:10,629 INFO L93 Difference]: Finished difference Result 262 states and 363 transitions. [2025-02-07 16:44:10,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2025-02-07 16:44:10,632 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 192 states have (on average 1.0364583333333333) internal successors, (199), 191 states have internal predecessors, (199), 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 129 [2025-02-07 16:44:10,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:44:10,633 INFO L225 Difference]: With dead ends: 262 [2025-02-07 16:44:10,633 INFO L226 Difference]: Without dead ends: 227 [2025-02-07 16:44:10,635 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2025-02-07 16:44:10,636 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 0 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 16:44:10,636 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 65 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 16:44:10,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2025-02-07 16:44:10,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 227. [2025-02-07 16:44:10,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 226 states have (on average 1.0176991150442478) internal successors, (230), 226 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:44:10,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 230 transitions. [2025-02-07 16:44:10,646 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 230 transitions. Word has length 129 [2025-02-07 16:44:10,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:44:10,646 INFO L471 AbstractCegarLoop]: Abstraction has 227 states and 230 transitions. [2025-02-07 16:44:10,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 192 states have (on average 1.0364583333333333) internal successors, (199), 191 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:44:10,646 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 230 transitions. [2025-02-07 16:44:10,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2025-02-07 16:44:10,648 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:44:10,648 INFO L218 NwaCegarLoop]: trace histogram [190, 14, 14, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:44:10,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2025-02-07 16:44:10,853 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 [2025-02-07 16:44:10,853 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:44:10,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:44:10,854 INFO L85 PathProgramCache]: Analyzing trace with hash -286306901, now seen corresponding path program 9 times [2025-02-07 16:44:10,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:44:10,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239803243] [2025-02-07 16:44:10,854 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 16:44:10,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:44:10,920 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 225 statements into 96 equivalence classes. [2025-02-07 16:44:10,993 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) and asserted 49 of 225 statements. [2025-02-07 16:44:10,993 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2025-02-07 16:44:10,993 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:44:11,199 INFO L134 CoverageAnalysis]: Checked inductivity of 18355 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 18250 trivial. 0 not checked. [2025-02-07 16:44:11,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:44:11,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239803243] [2025-02-07 16:44:11,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239803243] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:44:11,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6473589] [2025-02-07 16:44:11,200 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 16:44:11,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:44:11,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:44:11,203 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) [2025-02-07 16:44:11,204 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 [2025-02-07 16:44:11,432 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 225 statements into 96 equivalence classes. [2025-02-07 16:44:12,576 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) and asserted 49 of 225 statements. [2025-02-07 16:44:12,576 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2025-02-07 16:44:12,576 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:44:12,582 INFO L256 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-02-07 16:44:12,585 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:44:12,623 INFO L134 CoverageAnalysis]: Checked inductivity of 18355 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 18250 trivial. 0 not checked. [2025-02-07 16:44:12,624 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:44:12,909 INFO L134 CoverageAnalysis]: Checked inductivity of 18355 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 18250 trivial. 0 not checked. [2025-02-07 16:44:12,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6473589] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:44:12,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:44:12,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 33 [2025-02-07 16:44:12,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393888182] [2025-02-07 16:44:12,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:44:12,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2025-02-07 16:44:12,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:44:12,911 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2025-02-07 16:44:12,911 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2025-02-07 16:44:12,911 INFO L87 Difference]: Start difference. First operand 227 states and 230 transitions. Second operand has 33 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:44:13,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:44:13,003 INFO L93 Difference]: Finished difference Result 279 states and 315 transitions. [2025-02-07 16:44:13,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-02-07 16:44:13,003 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 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 225 [2025-02-07 16:44:13,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:44:13,005 INFO L225 Difference]: With dead ends: 279 [2025-02-07 16:44:13,005 INFO L226 Difference]: Without dead ends: 259 [2025-02-07 16:44:13,005 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 434 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2025-02-07 16:44:13,005 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 16:44:13,006 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 58 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 16:44:13,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2025-02-07 16:44:13,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2025-02-07 16:44:13,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 258 states have (on average 1.0155038759689923) internal successors, (262), 258 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:44:13,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 262 transitions. [2025-02-07 16:44:13,015 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 262 transitions. Word has length 225 [2025-02-07 16:44:13,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:44:13,015 INFO L471 AbstractCegarLoop]: Abstraction has 259 states and 262 transitions. [2025-02-07 16:44:13,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 33 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:44:13,016 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 262 transitions. [2025-02-07 16:44:13,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2025-02-07 16:44:13,017 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:44:13,017 INFO L218 NwaCegarLoop]: trace histogram [190, 30, 30, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:44:13,026 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-02-07 16:44:13,222 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 [2025-02-07 16:44:13,222 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:44:13,223 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:44:13,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1147326379, now seen corresponding path program 10 times [2025-02-07 16:44:13,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:44:13,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571360977] [2025-02-07 16:44:13,223 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 16:44:13,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:44:13,283 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 257 statements into 2 equivalence classes. [2025-02-07 16:44:13,393 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 257 of 257 statements. [2025-02-07 16:44:13,393 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-07 16:44:13,393 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:44:29,285 INFO L134 CoverageAnalysis]: Checked inductivity of 19075 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2025-02-07 16:44:29,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:44:29,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571360977] [2025-02-07 16:44:29,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571360977] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:44:29,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955805619] [2025-02-07 16:44:29,285 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 16:44:29,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:44:29,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:44:29,287 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) [2025-02-07 16:44:29,289 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 [2025-02-07 16:44:29,543 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 257 statements into 2 equivalence classes. [2025-02-07 16:44:29,720 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 257 of 257 statements. [2025-02-07 16:44:29,720 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-07 16:44:29,720 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:44:29,730 INFO L256 TraceCheckSpWp]: Trace formula consists of 2202 conjuncts, 192 conjuncts are in the unsatisfiable core [2025-02-07 16:44:29,735 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:44:29,922 INFO L134 CoverageAnalysis]: Checked inductivity of 19075 backedges. 0 proven. 18145 refuted. 0 times theorem prover too weak. 930 trivial. 0 not checked. [2025-02-07 16:44:29,923 INFO L312 TraceCheckSpWp]: Computing backward predicates...