./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-industry-pattern/array_single_elem_init.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-industry-pattern/array_single_elem_init.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 783ac259376d0d4b331b84c9ee3bd0ed2042af56d21e98db70a8bebb07aee3c2 --- Real Ultimate output --- This is Ultimate 0.3.0-?-48c9605-m [2025-02-07 16:54:13,500 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-02-07 16:54:13,567 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-02-07 16:54:13,575 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-02-07 16:54:13,575 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-02-07 16:54:13,601 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-02-07 16:54:13,603 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-02-07 16:54:13,603 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-02-07 16:54:13,604 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-02-07 16:54:13,604 INFO L153 SettingsManager]: * Use memory slicer=true [2025-02-07 16:54:13,604 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-02-07 16:54:13,604 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-02-07 16:54:13,605 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-02-07 16:54:13,605 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-02-07 16:54:13,605 INFO L153 SettingsManager]: * Use SBE=true [2025-02-07 16:54:13,606 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-02-07 16:54:13,606 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-02-07 16:54:13,606 INFO L153 SettingsManager]: * sizeof long=4 [2025-02-07 16:54:13,606 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-02-07 16:54:13,606 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-02-07 16:54:13,607 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-02-07 16:54:13,607 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-02-07 16:54:13,607 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-02-07 16:54:13,607 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-02-07 16:54:13,607 INFO L153 SettingsManager]: * sizeof long double=12 [2025-02-07 16:54:13,607 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-02-07 16:54:13,607 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-02-07 16:54:13,607 INFO L153 SettingsManager]: * Use constant arrays=true [2025-02-07 16:54:13,608 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-02-07 16:54:13,608 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-02-07 16:54:13,608 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-02-07 16:54:13,608 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-02-07 16:54:13,609 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 16:54:13,609 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-02-07 16:54:13,609 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-02-07 16:54:13,609 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-02-07 16:54:13,609 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-02-07 16:54:13,609 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-02-07 16:54:13,609 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-02-07 16:54:13,609 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-02-07 16:54:13,609 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-02-07 16:54:13,610 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-02-07 16:54:13,610 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-02-07 16:54:13,610 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 -> 783ac259376d0d4b331b84c9ee3bd0ed2042af56d21e98db70a8bebb07aee3c2 [2025-02-07 16:54:13,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-02-07 16:54:13,874 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-02-07 16:54:13,877 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-02-07 16:54:13,878 INFO L270 PluginConnector]: Initializing CDTParser... [2025-02-07 16:54:13,878 INFO L274 PluginConnector]: CDTParser initialized [2025-02-07 16:54:13,881 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-industry-pattern/array_single_elem_init.i [2025-02-07 16:54:15,147 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/29875739d/24f9a092d4294bcdb63b2289af83bc2a/FLAGdc7412844 [2025-02-07 16:54:15,383 INFO L384 CDTParser]: Found 1 translation units. [2025-02-07 16:54:15,384 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-industry-pattern/array_single_elem_init.i [2025-02-07 16:54:15,389 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/29875739d/24f9a092d4294bcdb63b2289af83bc2a/FLAGdc7412844 [2025-02-07 16:54:15,400 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/29875739d/24f9a092d4294bcdb63b2289af83bc2a [2025-02-07 16:54:15,402 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-02-07 16:54:15,404 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-02-07 16:54:15,405 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-02-07 16:54:15,405 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-02-07 16:54:15,408 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-02-07 16:54:15,409 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 04:54:15" (1/1) ... [2025-02-07 16:54:15,410 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@478bb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:54:15, skipping insertion in model container [2025-02-07 16:54:15,410 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.02 04:54:15" (1/1) ... [2025-02-07 16:54:15,423 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-02-07 16:54:15,570 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-industry-pattern/array_single_elem_init.i[815,828] [2025-02-07 16:54:15,592 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 16:54:15,602 INFO L200 MainTranslator]: Completed pre-run [2025-02-07 16:54:15,614 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-industry-pattern/array_single_elem_init.i[815,828] [2025-02-07 16:54:15,624 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-02-07 16:54:15,639 INFO L204 MainTranslator]: Completed translation [2025-02-07 16:54:15,640 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:54:15 WrapperNode [2025-02-07 16:54:15,641 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-02-07 16:54:15,643 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-02-07 16:54:15,643 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-02-07 16:54:15,643 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-02-07 16:54:15,649 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:54:15" (1/1) ... [2025-02-07 16:54:15,655 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:54:15" (1/1) ... [2025-02-07 16:54:15,673 INFO L138 Inliner]: procedures = 16, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 65 [2025-02-07 16:54:15,675 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-02-07 16:54:15,676 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-02-07 16:54:15,676 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-02-07 16:54:15,676 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-02-07 16:54:15,683 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:54:15" (1/1) ... [2025-02-07 16:54:15,684 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:54:15" (1/1) ... [2025-02-07 16:54:15,690 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:54:15" (1/1) ... [2025-02-07 16:54:15,707 INFO L175 MemorySlicer]: Split 11 memory accesses to 4 slices as follows [2, 3, 2, 4]. 36 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 6 writes are split as follows [0, 2, 1, 3]. [2025-02-07 16:54:15,707 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:54:15" (1/1) ... [2025-02-07 16:54:15,708 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:54:15" (1/1) ... [2025-02-07 16:54:15,714 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:54:15" (1/1) ... [2025-02-07 16:54:15,717 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:54:15" (1/1) ... [2025-02-07 16:54:15,718 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:54:15" (1/1) ... [2025-02-07 16:54:15,719 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:54:15" (1/1) ... [2025-02-07 16:54:15,724 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-02-07 16:54:15,725 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-02-07 16:54:15,725 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-02-07 16:54:15,725 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-02-07 16:54:15,726 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:54:15" (1/1) ... [2025-02-07 16:54:15,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-02-07 16:54:15,745 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:54:15,759 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 16:54:15,764 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 16:54:15,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-02-07 16:54:15,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-02-07 16:54:15,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-02-07 16:54:15,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-02-07 16:54:15,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-02-07 16:54:15,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-02-07 16:54:15,786 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-02-07 16:54:15,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-02-07 16:54:15,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-02-07 16:54:15,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-02-07 16:54:15,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-02-07 16:54:15,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-02-07 16:54:15,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-02-07 16:54:15,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-02-07 16:54:15,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-02-07 16:54:15,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-02-07 16:54:15,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-02-07 16:54:15,862 INFO L257 CfgBuilder]: Building ICFG [2025-02-07 16:54:15,864 INFO L287 CfgBuilder]: Building CFG for each procedure with an implementation [2025-02-07 16:54:15,997 INFO L1324 $ProcedureCfgBuilder]: dead code at ProgramPoint L18: call ULTIMATE.dealloc(main_~#a~0#1.base, main_~#a~0#1.offset);havoc main_~#a~0#1.base, main_~#a~0#1.offset;call ULTIMATE.dealloc(main_~#b~0#1.base, main_~#b~0#1.offset);havoc main_~#b~0#1.base, main_~#b~0#1.offset;call ULTIMATE.dealloc(main_~#c~0#1.base, main_~#c~0#1.offset);havoc main_~#c~0#1.base, main_~#c~0#1.offset; [2025-02-07 16:54:16,005 INFO L? ?]: Removed 10 outVars from TransFormulas that were not future-live. [2025-02-07 16:54:16,005 INFO L308 CfgBuilder]: Performing block encoding [2025-02-07 16:54:16,016 INFO L332 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-02-07 16:54:16,017 INFO L337 CfgBuilder]: Removed 0 assume(true) statements. [2025-02-07 16:54:16,017 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 04:54:16 BoogieIcfgContainer [2025-02-07 16:54:16,017 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-02-07 16:54:16,019 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-02-07 16:54:16,019 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-02-07 16:54:16,024 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-02-07 16:54:16,024 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.02 04:54:15" (1/3) ... [2025-02-07 16:54:16,025 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69b5f96c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 04:54:16, skipping insertion in model container [2025-02-07 16:54:16,025 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.02 04:54:15" (2/3) ... [2025-02-07 16:54:16,025 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69b5f96c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.02 04:54:16, skipping insertion in model container [2025-02-07 16:54:16,025 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 07.02 04:54:16" (3/3) ... [2025-02-07 16:54:16,026 INFO L128 eAbstractionObserver]: Analyzing ICFG array_single_elem_init.i [2025-02-07 16:54:16,037 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-02-07 16:54:16,038 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG array_single_elem_init.i that has 1 procedures, 17 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2025-02-07 16:54:16,081 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-02-07 16:54:16,095 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;@525cd8d9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-02-07 16:54:16,096 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-02-07 16:54:16,101 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 states have internal predecessors, (23), 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 16:54:16,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2025-02-07 16:54:16,107 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:54:16,107 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2025-02-07 16:54:16,108 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:54:16,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:54:16,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1558347284, now seen corresponding path program 1 times [2025-02-07 16:54:16,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:54:16,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25601679] [2025-02-07 16:54:16,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:54:16,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:54:16,199 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 6 statements into 1 equivalence classes. [2025-02-07 16:54:16,224 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 6 of 6 statements. [2025-02-07 16:54:16,224 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:54:16,224 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:54:16,331 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 16:54:16,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:54:16,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25601679] [2025-02-07 16:54:16,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25601679] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 16:54:16,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 16:54:16,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2025-02-07 16:54:16,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037701958] [2025-02-07 16:54:16,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 16:54:16,338 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-02-07 16:54:16,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:54:16,352 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-02-07 16:54:16,352 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-02-07 16:54:16,353 INFO L87 Difference]: Start difference. First operand has 17 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 states have internal predecessors, (23), 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 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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 16:54:16,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:54:16,433 INFO L93 Difference]: Finished difference Result 36 states and 50 transitions. [2025-02-07 16:54:16,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-02-07 16:54:16,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2025-02-07 16:54:16,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:54:16,440 INFO L225 Difference]: With dead ends: 36 [2025-02-07 16:54:16,440 INFO L226 Difference]: Without dead ends: 23 [2025-02-07 16:54:16,442 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 16:54:16,446 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 10 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 16:54:16,447 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 19 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 16:54:16,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2025-02-07 16:54:16,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 17. [2025-02-07 16:54:16,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.375) internal successors, (22), 16 states have internal predecessors, (22), 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 16:54:16,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2025-02-07 16:54:16,470 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 22 transitions. Word has length 6 [2025-02-07 16:54:16,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:54:16,470 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 22 transitions. [2025-02-07 16:54:16,470 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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 16:54:16,471 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 22 transitions. [2025-02-07 16:54:16,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2025-02-07 16:54:16,471 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:54:16,471 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-02-07 16:54:16,471 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-02-07 16:54:16,471 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:54:16,472 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:54:16,472 INFO L85 PathProgramCache]: Analyzing trace with hash -401956144, now seen corresponding path program 1 times [2025-02-07 16:54:16,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:54:16,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792261427] [2025-02-07 16:54:16,472 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:54:16,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:54:16,494 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-07 16:54:16,514 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-07 16:54:16,515 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:54:16,515 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:54:16,631 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 16:54:16,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:54:16,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792261427] [2025-02-07 16:54:16,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792261427] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:54:16,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560666834] [2025-02-07 16:54:16,631 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:54:16,631 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:54:16,631 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:54:16,633 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 16:54:16,635 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 16:54:16,677 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 14 statements into 1 equivalence classes. [2025-02-07 16:54:16,702 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 14 of 14 statements. [2025-02-07 16:54:16,702 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:54:16,702 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:54:16,705 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-02-07 16:54:16,708 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:54:16,754 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 16:54:16,754 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:54:16,798 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 16:54:16,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560666834] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:54:16,798 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:54:16,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2025-02-07 16:54:16,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290325220] [2025-02-07 16:54:16,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:54:16,799 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-02-07 16:54:16,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:54:16,800 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-02-07 16:54:16,800 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-07 16:54:16,800 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 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 16:54:16,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:54:16,916 INFO L93 Difference]: Finished difference Result 52 states and 72 transitions. [2025-02-07 16:54:16,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-02-07 16:54:16,918 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 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) Word has length 14 [2025-02-07 16:54:16,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:54:16,919 INFO L225 Difference]: With dead ends: 52 [2025-02-07 16:54:16,919 INFO L226 Difference]: Without dead ends: 43 [2025-02-07 16:54:16,919 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-02-07 16:54:16,920 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 43 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-02-07 16:54:16,920 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 20 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-02-07 16:54:16,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2025-02-07 16:54:16,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2025-02-07 16:54:16,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.4054054054054055) internal successors, (52), 37 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:54:16,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 52 transitions. [2025-02-07 16:54:16,932 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 52 transitions. Word has length 14 [2025-02-07 16:54:16,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:54:16,932 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 52 transitions. [2025-02-07 16:54:16,933 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 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 16:54:16,933 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 52 transitions. [2025-02-07 16:54:16,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-02-07 16:54:16,934 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:54:16,934 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1] [2025-02-07 16:54:16,943 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 16:54:17,135 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 16:54:17,135 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:54:17,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:54:17,136 INFO L85 PathProgramCache]: Analyzing trace with hash 293018740, now seen corresponding path program 2 times [2025-02-07 16:54:17,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:54:17,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904728658] [2025-02-07 16:54:17,136 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 16:54:17,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:54:17,180 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 32 statements into 2 equivalence classes. [2025-02-07 16:54:17,215 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 32 of 32 statements. [2025-02-07 16:54:17,219 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 16:54:17,219 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:54:17,420 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-02-07 16:54:17,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:54:17,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904728658] [2025-02-07 16:54:17,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904728658] provided 1 perfect and 0 imperfect interpolant sequences [2025-02-07 16:54:17,421 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-02-07 16:54:17,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-02-07 16:54:17,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701007988] [2025-02-07 16:54:17,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-02-07 16:54:17,422 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-02-07 16:54:17,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:54:17,422 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-02-07 16:54:17,422 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-02-07 16:54:17,422 INFO L87 Difference]: Start difference. First operand 38 states and 52 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:54:17,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:54:17,471 INFO L93 Difference]: Finished difference Result 86 states and 119 transitions. [2025-02-07 16:54:17,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-02-07 16:54:17,473 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2025-02-07 16:54:17,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:54:17,473 INFO L225 Difference]: With dead ends: 86 [2025-02-07 16:54:17,473 INFO L226 Difference]: Without dead ends: 54 [2025-02-07 16:54:17,473 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-02-07 16:54:17,474 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 4 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-02-07 16:54:17,474 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 34 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-02-07 16:54:17,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2025-02-07 16:54:17,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 46. [2025-02-07 16:54:17,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 45 states have (on average 1.3333333333333333) internal successors, (60), 45 states have internal predecessors, (60), 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 16:54:17,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 60 transitions. [2025-02-07 16:54:17,485 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 60 transitions. Word has length 32 [2025-02-07 16:54:17,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:54:17,485 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 60 transitions. [2025-02-07 16:54:17,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-02-07 16:54:17,486 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 60 transitions. [2025-02-07 16:54:17,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2025-02-07 16:54:17,487 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:54:17,487 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1] [2025-02-07 16:54:17,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-02-07 16:54:17,487 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:54:17,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:54:17,488 INFO L85 PathProgramCache]: Analyzing trace with hash -674146892, now seen corresponding path program 1 times [2025-02-07 16:54:17,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:54:17,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463001230] [2025-02-07 16:54:17,489 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:54:17,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:54:17,501 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-02-07 16:54:17,513 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-02-07 16:54:17,515 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:54:17,515 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:54:17,619 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-07 16:54:17,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:54:17,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463001230] [2025-02-07 16:54:17,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463001230] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:54:17,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973204495] [2025-02-07 16:54:17,620 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-02-07 16:54:17,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:54:17,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:54:17,623 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 16:54:17,626 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 16:54:17,677 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 32 statements into 1 equivalence classes. [2025-02-07 16:54:17,703 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 32 of 32 statements. [2025-02-07 16:54:17,703 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-02-07 16:54:17,703 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:54:17,704 INFO L256 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-02-07 16:54:17,706 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:54:17,766 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-07 16:54:17,766 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:54:17,873 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2025-02-07 16:54:17,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973204495] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:54:17,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:54:17,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2025-02-07 16:54:17,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894952375] [2025-02-07 16:54:17,873 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:54:17,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-02-07 16:54:17,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:54:17,874 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-02-07 16:54:17,874 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-02-07 16:54:17,874 INFO L87 Difference]: Start difference. First operand 46 states and 60 transitions. Second operand has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 12 states have internal predecessors, (56), 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 16:54:18,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:54:18,110 INFO L93 Difference]: Finished difference Result 129 states and 175 transitions. [2025-02-07 16:54:18,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-02-07 16:54:18,110 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 12 states have internal predecessors, (56), 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 32 [2025-02-07 16:54:18,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:54:18,112 INFO L225 Difference]: With dead ends: 129 [2025-02-07 16:54:18,112 INFO L226 Difference]: Without dead ends: 117 [2025-02-07 16:54:18,112 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-02-07 16:54:18,113 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 172 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-02-07 16:54:18,113 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 32 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-02-07 16:54:18,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2025-02-07 16:54:18,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 103. [2025-02-07 16:54:18,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 102 states have (on average 1.3235294117647058) internal successors, (135), 102 states have internal predecessors, (135), 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 16:54:18,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 135 transitions. [2025-02-07 16:54:18,122 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 135 transitions. Word has length 32 [2025-02-07 16:54:18,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:54:18,122 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 135 transitions. [2025-02-07 16:54:18,122 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 12 states have internal predecessors, (56), 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 16:54:18,123 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 135 transitions. [2025-02-07 16:54:18,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2025-02-07 16:54:18,124 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:54:18,124 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 6, 5, 5, 1, 1, 1, 1, 1] [2025-02-07 16:54:18,131 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 16:54:18,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:54:18,325 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:54:18,326 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:54:18,326 INFO L85 PathProgramCache]: Analyzing trace with hash 803126187, now seen corresponding path program 2 times [2025-02-07 16:54:18,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:54:18,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016024625] [2025-02-07 16:54:18,326 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 16:54:18,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:54:18,347 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 71 statements into 2 equivalence classes. [2025-02-07 16:54:18,361 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 71 of 71 statements. [2025-02-07 16:54:18,361 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 16:54:18,361 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:54:18,645 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-02-07 16:54:18,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:54:18,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016024625] [2025-02-07 16:54:18,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016024625] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:54:18,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617232952] [2025-02-07 16:54:18,646 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-02-07 16:54:18,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:54:18,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:54:18,649 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 16:54:18,651 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 16:54:18,713 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 71 statements into 2 equivalence classes. [2025-02-07 16:54:18,748 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 71 of 71 statements. [2025-02-07 16:54:18,749 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-02-07 16:54:18,749 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:54:18,750 INFO L256 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-02-07 16:54:18,752 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:54:18,874 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-02-07 16:54:18,874 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:54:19,162 INFO L134 CoverageAnalysis]: Checked inductivity of 275 backedges. 0 proven. 235 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2025-02-07 16:54:19,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617232952] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:54:19,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:54:19,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2025-02-07 16:54:19,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504334937] [2025-02-07 16:54:19,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:54:19,164 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-02-07 16:54:19,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:54:19,165 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-02-07 16:54:19,165 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-02-07 16:54:19,166 INFO L87 Difference]: Start difference. First operand 103 states and 135 transitions. Second operand has 25 states, 25 states have (on average 4.64) internal successors, (116), 24 states have internal predecessors, (116), 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 16:54:19,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:54:19,573 INFO L93 Difference]: Finished difference Result 270 states and 367 transitions. [2025-02-07 16:54:19,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-02-07 16:54:19,575 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.64) internal successors, (116), 24 states have internal predecessors, (116), 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 71 [2025-02-07 16:54:19,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:54:19,577 INFO L225 Difference]: With dead ends: 270 [2025-02-07 16:54:19,577 INFO L226 Difference]: Without dead ends: 249 [2025-02-07 16:54:19,577 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-02-07 16:54:19,578 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 475 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 475 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-07 16:54:19,578 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [475 Valid, 62 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-07 16:54:19,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2025-02-07 16:54:19,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 217. [2025-02-07 16:54:19,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 1.3194444444444444) internal successors, (285), 216 states have internal predecessors, (285), 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 16:54:19,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 285 transitions. [2025-02-07 16:54:19,595 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 285 transitions. Word has length 71 [2025-02-07 16:54:19,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:54:19,595 INFO L471 AbstractCegarLoop]: Abstraction has 217 states and 285 transitions. [2025-02-07 16:54:19,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.64) internal successors, (116), 24 states have internal predecessors, (116), 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 16:54:19,596 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 285 transitions. [2025-02-07 16:54:19,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2025-02-07 16:54:19,600 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:54:19,600 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 12, 11, 11, 1, 1, 1, 1, 1] [2025-02-07 16:54:19,608 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 16:54:19,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:54:19,801 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:54:19,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:54:19,802 INFO L85 PathProgramCache]: Analyzing trace with hash 605855947, now seen corresponding path program 3 times [2025-02-07 16:54:19,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:54:19,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038230844] [2025-02-07 16:54:19,802 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 16:54:19,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:54:19,830 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 149 statements into 23 equivalence classes. [2025-02-07 16:54:19,866 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) and asserted 94 of 149 statements. [2025-02-07 16:54:19,867 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2025-02-07 16:54:19,867 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:54:20,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1364 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 1177 trivial. 0 not checked. [2025-02-07 16:54:20,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:54:20,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038230844] [2025-02-07 16:54:20,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038230844] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:54:20,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435513426] [2025-02-07 16:54:20,138 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-02-07 16:54:20,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:54:20,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:54:20,142 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 16:54:20,144 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 16:54:20,214 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 149 statements into 23 equivalence classes. [2025-02-07 16:54:20,314 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) and asserted 94 of 149 statements. [2025-02-07 16:54:20,314 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s) [2025-02-07 16:54:20,314 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:54:20,316 INFO L256 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-02-07 16:54:20,322 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:54:20,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1364 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 1177 trivial. 0 not checked. [2025-02-07 16:54:20,416 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:54:20,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1364 backedges. 0 proven. 187 refuted. 0 times theorem prover too weak. 1177 trivial. 0 not checked. [2025-02-07 16:54:20,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435513426] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:54:20,683 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:54:20,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 27 [2025-02-07 16:54:20,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526473131] [2025-02-07 16:54:20,684 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:54:20,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2025-02-07 16:54:20,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:54:20,685 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2025-02-07 16:54:20,685 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2025-02-07 16:54:20,686 INFO L87 Difference]: Start difference. First operand 217 states and 285 transitions. Second operand has 27 states, 27 states have (on average 3.111111111111111) internal successors, (84), 27 states have internal predecessors, (84), 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 16:54:21,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:54:21,035 INFO L93 Difference]: Finished difference Result 319 states and 412 transitions. [2025-02-07 16:54:21,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2025-02-07 16:54:21,036 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 3.111111111111111) internal successors, (84), 27 states have internal predecessors, (84), 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 149 [2025-02-07 16:54:21,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:54:21,038 INFO L225 Difference]: With dead ends: 319 [2025-02-07 16:54:21,038 INFO L226 Difference]: Without dead ends: 280 [2025-02-07 16:54:21,038 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=351, Invalid=351, Unknown=0, NotChecked=0, Total=702 [2025-02-07 16:54:21,039 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 522 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 522 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-02-07 16:54:21,039 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [522 Valid, 73 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-02-07 16:54:21,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2025-02-07 16:54:21,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 272. [2025-02-07 16:54:21,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 271 states have (on average 1.2767527675276753) internal successors, (346), 271 states have internal predecessors, (346), 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 16:54:21,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 346 transitions. [2025-02-07 16:54:21,071 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 346 transitions. Word has length 149 [2025-02-07 16:54:21,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:54:21,071 INFO L471 AbstractCegarLoop]: Abstraction has 272 states and 346 transitions. [2025-02-07 16:54:21,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 3.111111111111111) internal successors, (84), 27 states have internal predecessors, (84), 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 16:54:21,071 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 346 transitions. [2025-02-07 16:54:21,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2025-02-07 16:54:21,077 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:54:21,077 INFO L218 NwaCegarLoop]: trace histogram [25, 24, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1] [2025-02-07 16:54:21,086 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-02-07 16:54:21,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2025-02-07 16:54:21,278 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:54:21,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:54:21,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1820170348, now seen corresponding path program 4 times [2025-02-07 16:54:21,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:54:21,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856234167] [2025-02-07 16:54:21,279 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 16:54:21,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:54:21,298 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 198 statements into 2 equivalence classes. [2025-02-07 16:54:21,326 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 198 of 198 statements. [2025-02-07 16:54:21,327 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-07 16:54:21,327 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:54:22,234 INFO L134 CoverageAnalysis]: Checked inductivity of 2280 backedges. 0 proven. 1404 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2025-02-07 16:54:22,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:54:22,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856234167] [2025-02-07 16:54:22,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856234167] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:54:22,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994711223] [2025-02-07 16:54:22,235 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-02-07 16:54:22,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:54:22,235 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:54:22,238 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 16:54:22,240 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 16:54:22,322 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 198 statements into 2 equivalence classes. [2025-02-07 16:54:22,392 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 198 of 198 statements. [2025-02-07 16:54:22,393 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-02-07 16:54:22,393 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:54:22,396 INFO L256 TraceCheckSpWp]: Trace formula consists of 502 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-02-07 16:54:22,401 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:54:22,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2280 backedges. 0 proven. 1404 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2025-02-07 16:54:22,592 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:54:23,466 INFO L134 CoverageAnalysis]: Checked inductivity of 2280 backedges. 0 proven. 1404 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2025-02-07 16:54:23,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994711223] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:54:23,466 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:54:23,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26, 26] total 51 [2025-02-07 16:54:23,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361312571] [2025-02-07 16:54:23,466 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:54:23,467 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2025-02-07 16:54:23,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:54:23,468 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2025-02-07 16:54:23,469 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2025-02-07 16:54:23,469 INFO L87 Difference]: Start difference. First operand 272 states and 346 transitions. Second operand has 52 states, 52 states have (on average 4.8076923076923075) internal successors, (250), 51 states have internal predecessors, (250), 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 16:54:24,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:54:24,334 INFO L93 Difference]: Finished difference Result 635 states and 839 transitions. [2025-02-07 16:54:24,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2025-02-07 16:54:24,335 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 4.8076923076923075) internal successors, (250), 51 states have internal predecessors, (250), 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 198 [2025-02-07 16:54:24,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:54:24,337 INFO L225 Difference]: With dead ends: 635 [2025-02-07 16:54:24,337 INFO L226 Difference]: Without dead ends: 557 [2025-02-07 16:54:24,338 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 420 GetRequests, 370 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1326, Invalid=1326, Unknown=0, NotChecked=0, Total=2652 [2025-02-07 16:54:24,339 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 1063 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1063 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-02-07 16:54:24,340 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1063 Valid, 126 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-02-07 16:54:24,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557 states. [2025-02-07 16:54:24,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557 to 483. [2025-02-07 16:54:24,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 482 states have (on average 1.3174273858921162) internal successors, (635), 482 states have internal predecessors, (635), 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 16:54:24,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 635 transitions. [2025-02-07 16:54:24,358 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 635 transitions. Word has length 198 [2025-02-07 16:54:24,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:54:24,358 INFO L471 AbstractCegarLoop]: Abstraction has 483 states and 635 transitions. [2025-02-07 16:54:24,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 4.8076923076923075) internal successors, (250), 51 states have internal predecessors, (250), 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 16:54:24,359 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 635 transitions. [2025-02-07 16:54:24,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2025-02-07 16:54:24,366 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:54:24,366 INFO L218 NwaCegarLoop]: trace histogram [50, 50, 50, 50, 50, 26, 25, 25, 1, 1, 1, 1, 1] [2025-02-07 16:54:24,374 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 16:54:24,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:54:24,570 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:54:24,571 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:54:24,571 INFO L85 PathProgramCache]: Analyzing trace with hash -537419925, now seen corresponding path program 5 times [2025-02-07 16:54:24,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:54:24,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408695126] [2025-02-07 16:54:24,571 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-07 16:54:24,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:54:24,600 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 331 statements into 51 equivalence classes. [2025-02-07 16:54:24,850 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 51 check-sat command(s) and asserted 331 of 331 statements. [2025-02-07 16:54:24,851 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 51 check-sat command(s) [2025-02-07 16:54:24,851 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:54:27,490 INFO L134 CoverageAnalysis]: Checked inductivity of 7125 backedges. 0 proven. 6175 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2025-02-07 16:54:27,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-02-07 16:54:27,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408695126] [2025-02-07 16:54:27,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408695126] provided 0 perfect and 1 imperfect interpolant sequences [2025-02-07 16:54:27,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1011967329] [2025-02-07 16:54:27,491 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-02-07 16:54:27,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-02-07 16:54:27,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-02-07 16:54:27,494 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 16:54:27,496 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 16:54:27,592 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 331 statements into 51 equivalence classes. [2025-02-07 16:55:48,950 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 51 check-sat command(s) and asserted 331 of 331 statements. [2025-02-07 16:55:48,950 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 51 check-sat command(s) [2025-02-07 16:55:48,950 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-02-07 16:55:48,979 INFO L256 TraceCheckSpWp]: Trace formula consists of 870 conjuncts, 27 conjuncts are in the unsatisfiable core [2025-02-07 16:55:48,983 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-02-07 16:55:49,080 INFO L134 CoverageAnalysis]: Checked inductivity of 7125 backedges. 0 proven. 950 refuted. 0 times theorem prover too weak. 6175 trivial. 0 not checked. [2025-02-07 16:55:49,081 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-02-07 16:55:50,277 INFO L134 CoverageAnalysis]: Checked inductivity of 7125 backedges. 0 proven. 950 refuted. 0 times theorem prover too weak. 6175 trivial. 0 not checked. [2025-02-07 16:55:50,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1011967329] provided 0 perfect and 2 imperfect interpolant sequences [2025-02-07 16:55:50,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-02-07 16:55:50,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 28, 28] total 79 [2025-02-07 16:55:50,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733576661] [2025-02-07 16:55:50,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-02-07 16:55:50,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2025-02-07 16:55:50,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-02-07 16:55:50,281 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2025-02-07 16:55:50,282 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2025-02-07 16:55:50,282 INFO L87 Difference]: Start difference. First operand 483 states and 635 transitions. Second operand has 79 states, 79 states have (on average 5.3164556962025316) internal successors, (420), 79 states have internal predecessors, (420), 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 16:55:51,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-02-07 16:55:51,838 INFO L93 Difference]: Finished difference Result 944 states and 1260 transitions. [2025-02-07 16:55:51,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2025-02-07 16:55:51,838 INFO L78 Accepts]: Start accepts. Automaton has has 79 states, 79 states have (on average 5.3164556962025316) internal successors, (420), 79 states have internal predecessors, (420), 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 331 [2025-02-07 16:55:51,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-02-07 16:55:51,842 INFO L225 Difference]: With dead ends: 944 [2025-02-07 16:55:51,842 INFO L226 Difference]: Without dead ends: 863 [2025-02-07 16:55:51,844 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 712 GetRequests, 635 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=3081, Invalid=3081, Unknown=0, NotChecked=0, Total=6162 [2025-02-07 16:55:51,845 INFO L435 NwaCegarLoop]: 9 mSDtfsCounter, 1716 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1716 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2025-02-07 16:55:51,845 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1716 Valid, 175 Invalid, 947 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2025-02-07 16:55:51,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2025-02-07 16:55:51,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 855. [2025-02-07 16:55:51,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 854 states have (on average 1.2740046838407495) internal successors, (1088), 854 states have internal predecessors, (1088), 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 16:55:51,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1088 transitions. [2025-02-07 16:55:51,864 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1088 transitions. Word has length 331 [2025-02-07 16:55:51,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-02-07 16:55:51,864 INFO L471 AbstractCegarLoop]: Abstraction has 855 states and 1088 transitions. [2025-02-07 16:55:51,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 79 states, 79 states have (on average 5.3164556962025316) internal successors, (420), 79 states have internal predecessors, (420), 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 16:55:51,865 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1088 transitions. [2025-02-07 16:55:51,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2025-02-07 16:55:51,875 INFO L210 NwaCegarLoop]: Found error trace [2025-02-07 16:55:51,876 INFO L218 NwaCegarLoop]: trace histogram [78, 77, 77, 77, 77, 77, 77, 77, 1, 1, 1, 1, 1] [2025-02-07 16:55:51,922 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-02-07 16:55:52,076 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,SelfDestructingSolverStorable7 [2025-02-07 16:55:52,077 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-02-07 16:55:52,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-02-07 16:55:52,078 INFO L85 PathProgramCache]: Analyzing trace with hash 2035414895, now seen corresponding path program 6 times [2025-02-07 16:55:52,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-02-07 16:55:52,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078392680] [2025-02-07 16:55:52,078 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-02-07 16:55:52,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-02-07 16:55:52,131 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 622 statements into 78 equivalence classes. [2025-02-07 16:55:52,585 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 78 check-sat command(s) and asserted 622 of 622 statements. [2025-02-07 16:55:52,586 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 78 check-sat command(s) [2025-02-07 16:55:52,586 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat