./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/standard_partition_ground-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 551b0097 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-examples/standard_partition_ground-1.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 6c4a57140d9977d38b2a20d40c88df51a4fcb7b14a0fb7c51e0b4e36cddf9998 --- Real Ultimate output --- This is Ultimate 0.3.0-?-551b009-m [2025-01-08 22:07:37,659 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-01-08 22:07:37,699 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-01-08 22:07:37,703 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-01-08 22:07:37,703 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-01-08 22:07:37,717 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-01-08 22:07:37,717 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-01-08 22:07:37,718 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-01-08 22:07:37,718 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-01-08 22:07:37,718 INFO L153 SettingsManager]: * Use memory slicer=true [2025-01-08 22:07:37,718 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-01-08 22:07:37,718 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-01-08 22:07:37,718 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-01-08 22:07:37,718 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-01-08 22:07:37,718 INFO L153 SettingsManager]: * Use SBE=true [2025-01-08 22:07:37,719 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-01-08 22:07:37,719 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-01-08 22:07:37,719 INFO L153 SettingsManager]: * sizeof long=4 [2025-01-08 22:07:37,719 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-01-08 22:07:37,719 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-01-08 22:07:37,719 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-01-08 22:07:37,719 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-01-08 22:07:37,719 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-01-08 22:07:37,719 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-01-08 22:07:37,719 INFO L153 SettingsManager]: * sizeof long double=12 [2025-01-08 22:07:37,719 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-01-08 22:07:37,720 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-01-08 22:07:37,720 INFO L153 SettingsManager]: * Use constant arrays=true [2025-01-08 22:07:37,720 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-01-08 22:07:37,720 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-08 22:07:37,720 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-08 22:07:37,720 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-08 22:07:37,720 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:07:37,720 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2025-01-08 22:07:37,720 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-01-08 22:07:37,720 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-01-08 22:07:37,720 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-01-08 22:07:37,721 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:07:37,721 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-01-08 22:07:37,721 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-01-08 22:07:37,721 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-01-08 22:07:37,721 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-01-08 22:07:37,721 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-01-08 22:07:37,721 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-01-08 22:07:37,721 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-01-08 22:07:37,721 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-01-08 22:07:37,721 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-01-08 22:07:37,721 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-01-08 22:07:37,721 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 -> 6c4a57140d9977d38b2a20d40c88df51a4fcb7b14a0fb7c51e0b4e36cddf9998 [2025-01-08 22:07:37,946 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-01-08 22:07:37,951 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-01-08 22:07:37,954 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-01-08 22:07:37,955 INFO L270 PluginConnector]: Initializing CDTParser... [2025-01-08 22:07:37,956 INFO L274 PluginConnector]: CDTParser initialized [2025-01-08 22:07:37,956 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_partition_ground-1.i [2025-01-08 22:07:39,133 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/015122895/889190737b3a4307a012e3dbea9fb8a0/FLAG968e2f69c [2025-01-08 22:07:39,361 INFO L384 CDTParser]: Found 1 translation units. [2025-01-08 22:07:39,367 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-examples/standard_partition_ground-1.i [2025-01-08 22:07:39,377 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/015122895/889190737b3a4307a012e3dbea9fb8a0/FLAG968e2f69c [2025-01-08 22:07:39,417 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/015122895/889190737b3a4307a012e3dbea9fb8a0 [2025-01-08 22:07:39,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-01-08 22:07:39,421 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-01-08 22:07:39,424 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-01-08 22:07:39,424 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-01-08 22:07:39,427 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-01-08 22:07:39,428 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.01 10:07:39" (1/1) ... [2025-01-08 22:07:39,428 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68001dfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:07:39, skipping insertion in model container [2025-01-08 22:07:39,428 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.01 10:07:39" (1/1) ... [2025-01-08 22:07:39,440 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-01-08 22:07:39,535 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-examples/standard_partition_ground-1.i[860,873] [2025-01-08 22:07:39,548 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-08 22:07:39,555 INFO L200 MainTranslator]: Completed pre-run [2025-01-08 22:07:39,563 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-examples/standard_partition_ground-1.i[860,873] [2025-01-08 22:07:39,570 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-01-08 22:07:39,584 INFO L204 MainTranslator]: Completed translation [2025-01-08 22:07:39,585 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:07:39 WrapperNode [2025-01-08 22:07:39,585 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-01-08 22:07:39,586 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-01-08 22:07:39,586 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-01-08 22:07:39,586 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-01-08 22:07:39,590 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:07:39" (1/1) ... [2025-01-08 22:07:39,595 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:07:39" (1/1) ... [2025-01-08 22:07:39,609 INFO L138 Inliner]: procedures = 16, calls = 26, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 70 [2025-01-08 22:07:39,609 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-01-08 22:07:39,610 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-01-08 22:07:39,610 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-01-08 22:07:39,610 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-01-08 22:07:39,616 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:07:39" (1/1) ... [2025-01-08 22:07:39,616 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:07:39" (1/1) ... [2025-01-08 22:07:39,617 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:07:39" (1/1) ... [2025-01-08 22:07:39,625 INFO L175 MemorySlicer]: Split 11 memory accesses to 4 slices as follows [2, 2, 5, 2]. 45 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2025-01-08 22:07:39,625 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:07:39" (1/1) ... [2025-01-08 22:07:39,625 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:07:39" (1/1) ... [2025-01-08 22:07:39,628 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:07:39" (1/1) ... [2025-01-08 22:07:39,628 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:07:39" (1/1) ... [2025-01-08 22:07:39,630 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:07:39" (1/1) ... [2025-01-08 22:07:39,630 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:07:39" (1/1) ... [2025-01-08 22:07:39,631 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:07:39" (1/1) ... [2025-01-08 22:07:39,632 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-01-08 22:07:39,637 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2025-01-08 22:07:39,637 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2025-01-08 22:07:39,637 INFO L274 PluginConnector]: RCFGBuilder initialized [2025-01-08 22:07:39,638 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:07:39" (1/1) ... [2025-01-08 22:07:39,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-01-08 22:07:39,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:07:39,670 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) [2025-01-08 22:07:39,672 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 [2025-01-08 22:07:39,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-01-08 22:07:39,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-01-08 22:07:39,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-01-08 22:07:39,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-01-08 22:07:39,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-01-08 22:07:39,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-01-08 22:07:39,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-01-08 22:07:39,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-01-08 22:07:39,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-01-08 22:07:39,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-01-08 22:07:39,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-01-08 22:07:39,687 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-01-08 22:07:39,687 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-01-08 22:07:39,688 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-01-08 22:07:39,688 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-01-08 22:07:39,688 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-01-08 22:07:39,688 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-01-08 22:07:39,688 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-01-08 22:07:39,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-01-08 22:07:39,759 INFO L234 CfgBuilder]: Building ICFG [2025-01-08 22:07:39,765 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2025-01-08 22:07:39,877 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2025-01-08 22:07:39,877 INFO L283 CfgBuilder]: Performing block encoding [2025-01-08 22:07:39,882 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-01-08 22:07:39,883 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2025-01-08 22:07:39,883 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.01 10:07:39 BoogieIcfgContainer [2025-01-08 22:07:39,883 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2025-01-08 22:07:39,889 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-01-08 22:07:39,889 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-01-08 22:07:39,892 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-01-08 22:07:39,893 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.01 10:07:39" (1/3) ... [2025-01-08 22:07:39,893 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9b18392 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.01 10:07:39, skipping insertion in model container [2025-01-08 22:07:39,894 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.01 10:07:39" (2/3) ... [2025-01-08 22:07:39,894 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9b18392 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.01 10:07:39, skipping insertion in model container [2025-01-08 22:07:39,894 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.01 10:07:39" (3/3) ... [2025-01-08 22:07:39,896 INFO L128 eAbstractionObserver]: Analyzing ICFG standard_partition_ground-1.i [2025-01-08 22:07:39,907 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-01-08 22:07:39,909 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG standard_partition_ground-1.i that has 2 procedures, 23 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2025-01-08 22:07:39,949 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-01-08 22:07:39,959 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;@63a7607f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-01-08 22:07:39,959 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-01-08 22:07:39,962 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 19 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-08 22:07:39,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-01-08 22:07:39,965 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:07:39,965 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:07:39,966 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:07:39,969 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:07:39,970 INFO L85 PathProgramCache]: Analyzing trace with hash 254767527, now seen corresponding path program 1 times [2025-01-08 22:07:39,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:07:39,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459464860] [2025-01-08 22:07:39,975 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:07:39,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:07:40,031 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-01-08 22:07:40,048 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-01-08 22:07:40,048 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:07:40,048 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:07:40,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-01-08 22:07:40,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:07:40,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459464860] [2025-01-08 22:07:40,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459464860] provided 1 perfect and 0 imperfect interpolant sequences [2025-01-08 22:07:40,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-01-08 22:07:40,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-01-08 22:07:40,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021318141] [2025-01-08 22:07:40,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-01-08 22:07:40,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-01-08 22:07:40,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:07:40,158 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-01-08 22:07:40,158 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-08 22:07:40,160 INFO L87 Difference]: Start difference. First operand has 23 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 19 states have internal predecessors, (26), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:07:40,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:07:40,215 INFO L93 Difference]: Finished difference Result 47 states and 65 transitions. [2025-01-08 22:07:40,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-01-08 22:07:40,217 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-01-08 22:07:40,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:07:40,221 INFO L225 Difference]: With dead ends: 47 [2025-01-08 22:07:40,222 INFO L226 Difference]: Without dead ends: 26 [2025-01-08 22:07:40,225 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-01-08 22:07:40,228 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 6 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:07:40,229 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 42 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:07:40,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2025-01-08 22:07:40,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 22. [2025-01-08 22:07:40,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-08 22:07:40,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2025-01-08 22:07:40,256 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 9 [2025-01-08 22:07:40,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:07:40,256 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2025-01-08 22:07:40,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:07:40,256 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2025-01-08 22:07:40,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-01-08 22:07:40,257 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:07:40,257 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:07:40,257 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-01-08 22:07:40,257 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:07:40,258 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:07:40,258 INFO L85 PathProgramCache]: Analyzing trace with hash -520132630, now seen corresponding path program 1 times [2025-01-08 22:07:40,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:07:40,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693204363] [2025-01-08 22:07:40,258 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:07:40,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:07:40,268 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-08 22:07:40,280 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-08 22:07:40,280 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:07:40,280 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:07:40,340 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:07:40,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:07:40,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693204363] [2025-01-08 22:07:40,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693204363] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:07:40,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1008475542] [2025-01-08 22:07:40,341 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-01-08 22:07:40,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:07:40,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:07:40,343 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) [2025-01-08 22:07:40,344 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 [2025-01-08 22:07:40,382 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-01-08 22:07:40,399 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-01-08 22:07:40,400 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-01-08 22:07:40,400 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:07:40,401 INFO L256 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-01-08 22:07:40,404 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:07:40,431 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:07:40,432 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:07:40,460 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-01-08 22:07:40,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1008475542] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:07:40,462 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:07:40,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-01-08 22:07:40,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161653143] [2025-01-08 22:07:40,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:07:40,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-01-08 22:07:40,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:07:40,465 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-01-08 22:07:40,465 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-01-08 22:07:40,466 INFO L87 Difference]: Start difference. First operand 22 states and 28 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:07:40,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:07:40,526 INFO L93 Difference]: Finished difference Result 56 states and 78 transitions. [2025-01-08 22:07:40,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-01-08 22:07:40,531 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2025-01-08 22:07:40,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:07:40,532 INFO L225 Difference]: With dead ends: 56 [2025-01-08 22:07:40,532 INFO L226 Difference]: Without dead ends: 40 [2025-01-08 22:07:40,532 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-01-08 22:07:40,534 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 28 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-01-08 22:07:40,535 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 71 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-01-08 22:07:40,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2025-01-08 22:07:40,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2025-01-08 22:07:40,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 36 states have (on average 1.3333333333333333) internal successors, (48), 36 states have internal predecessors, (48), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-08 22:07:40,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 52 transitions. [2025-01-08 22:07:40,543 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 52 transitions. Word has length 15 [2025-01-08 22:07:40,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:07:40,543 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 52 transitions. [2025-01-08 22:07:40,544 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:07:40,544 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 52 transitions. [2025-01-08 22:07:40,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-01-08 22:07:40,545 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:07:40,546 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:07:40,555 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-01-08 22:07:40,746 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 [2025-01-08 22:07:40,746 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:07:40,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:07:40,748 INFO L85 PathProgramCache]: Analyzing trace with hash 904953319, now seen corresponding path program 2 times [2025-01-08 22:07:40,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:07:40,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951009042] [2025-01-08 22:07:40,748 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:07:40,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:07:40,777 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 33 statements into 2 equivalence classes. [2025-01-08 22:07:40,816 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 33 of 33 statements. [2025-01-08 22:07:40,816 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:07:40,816 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:07:40,958 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-08 22:07:40,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:07:40,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951009042] [2025-01-08 22:07:40,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951009042] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:07:40,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924108946] [2025-01-08 22:07:40,958 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-01-08 22:07:40,958 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:07:40,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:07:40,962 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) [2025-01-08 22:07:40,964 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 [2025-01-08 22:07:41,002 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 33 statements into 2 equivalence classes. [2025-01-08 22:07:41,027 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 33 of 33 statements. [2025-01-08 22:07:41,028 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-01-08 22:07:41,028 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:07:41,029 INFO L256 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-01-08 22:07:41,030 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:07:41,058 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-08 22:07:41,058 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:07:41,142 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2025-01-08 22:07:41,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924108946] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:07:41,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:07:41,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-01-08 22:07:41,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208608038] [2025-01-08 22:07:41,142 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:07:41,144 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-01-08 22:07:41,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:07:41,144 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-01-08 22:07:41,144 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-01-08 22:07:41,144 INFO L87 Difference]: Start difference. First operand 40 states and 52 transitions. Second operand has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:07:41,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:07:41,259 INFO L93 Difference]: Finished difference Result 101 states and 144 transitions. [2025-01-08 22:07:41,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-01-08 22:07:41,260 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2025-01-08 22:07:41,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:07:41,260 INFO L225 Difference]: With dead ends: 101 [2025-01-08 22:07:41,260 INFO L226 Difference]: Without dead ends: 76 [2025-01-08 22:07:41,261 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-01-08 22:07:41,261 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 88 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-01-08 22:07:41,261 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 85 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-01-08 22:07:41,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2025-01-08 22:07:41,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2025-01-08 22:07:41,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 72 states have (on average 1.3333333333333333) internal successors, (96), 72 states have internal predecessors, (96), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-08 22:07:41,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 100 transitions. [2025-01-08 22:07:41,272 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 100 transitions. Word has length 33 [2025-01-08 22:07:41,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:07:41,273 INFO L471 AbstractCegarLoop]: Abstraction has 76 states and 100 transitions. [2025-01-08 22:07:41,273 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.1538461538461537) internal successors, (41), 13 states have internal predecessors, (41), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:07:41,273 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 100 transitions. [2025-01-08 22:07:41,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2025-01-08 22:07:41,275 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:07:41,275 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:07:41,280 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-01-08 22:07:41,479 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:07:41,479 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:07:41,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:07:41,482 INFO L85 PathProgramCache]: Analyzing trace with hash 2085960775, now seen corresponding path program 3 times [2025-01-08 22:07:41,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:07:41,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130944167] [2025-01-08 22:07:41,483 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:07:41,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:07:41,532 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 69 statements into 11 equivalence classes. [2025-01-08 22:07:41,700 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 69 of 69 statements. [2025-01-08 22:07:41,700 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-01-08 22:07:41,700 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:07:42,000 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-01-08 22:07:42,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:07:42,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130944167] [2025-01-08 22:07:42,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130944167] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:07:42,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067437884] [2025-01-08 22:07:42,001 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-01-08 22:07:42,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:07:42,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:07:42,005 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) [2025-01-08 22:07:42,007 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 [2025-01-08 22:07:42,088 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 69 statements into 11 equivalence classes. [2025-01-08 22:07:44,016 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) and asserted 69 of 69 statements. [2025-01-08 22:07:44,017 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2025-01-08 22:07:44,017 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:07:44,021 INFO L256 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-01-08 22:07:44,023 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-01-08 22:07:44,121 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 28 proven. 145 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2025-01-08 22:07:44,122 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-01-08 22:07:44,320 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2025-01-08 22:07:44,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067437884] provided 0 perfect and 2 imperfect interpolant sequences [2025-01-08 22:07:44,321 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-01-08 22:07:44,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 13] total 26 [2025-01-08 22:07:44,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856408026] [2025-01-08 22:07:44,321 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-01-08 22:07:44,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2025-01-08 22:07:44,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-01-08 22:07:44,322 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2025-01-08 22:07:44,322 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2025-01-08 22:07:44,323 INFO L87 Difference]: Start difference. First operand 76 states and 100 transitions. Second operand has 26 states, 26 states have (on average 3.076923076923077) internal successors, (80), 26 states have internal predecessors, (80), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:07:44,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-01-08 22:07:44,546 INFO L93 Difference]: Finished difference Result 191 states and 276 transitions. [2025-01-08 22:07:44,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2025-01-08 22:07:44,546 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 3.076923076923077) internal successors, (80), 26 states have internal predecessors, (80), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2025-01-08 22:07:44,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-01-08 22:07:44,547 INFO L225 Difference]: With dead ends: 191 [2025-01-08 22:07:44,547 INFO L226 Difference]: Without dead ends: 148 [2025-01-08 22:07:44,548 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=325, Invalid=325, Unknown=0, NotChecked=0, Total=650 [2025-01-08 22:07:44,548 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 273 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 273 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-01-08 22:07:44,549 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [273 Valid, 92 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-01-08 22:07:44,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2025-01-08 22:07:44,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2025-01-08 22:07:44,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 144 states have (on average 1.3333333333333333) internal successors, (192), 144 states have internal predecessors, (192), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2025-01-08 22:07:44,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 196 transitions. [2025-01-08 22:07:44,557 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 196 transitions. Word has length 69 [2025-01-08 22:07:44,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-01-08 22:07:44,558 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 196 transitions. [2025-01-08 22:07:44,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 3.076923076923077) internal successors, (80), 26 states have internal predecessors, (80), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-01-08 22:07:44,558 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 196 transitions. [2025-01-08 22:07:44,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2025-01-08 22:07:44,560 INFO L210 NwaCegarLoop]: Found error trace [2025-01-08 22:07:44,560 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-01-08 22:07:44,570 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-01-08 22:07:44,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:07:44,764 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-01-08 22:07:44,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-01-08 22:07:44,765 INFO L85 PathProgramCache]: Analyzing trace with hash -899878649, now seen corresponding path program 4 times [2025-01-08 22:07:44,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-01-08 22:07:44,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041683994] [2025-01-08 22:07:44,765 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:07:44,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-01-08 22:07:44,808 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 141 statements into 2 equivalence classes. [2025-01-08 22:07:44,868 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 141 of 141 statements. [2025-01-08 22:07:44,868 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-01-08 22:07:44,868 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-01-08 22:07:45,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1430 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2025-01-08 22:07:45,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-01-08 22:07:45,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041683994] [2025-01-08 22:07:45,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041683994] provided 0 perfect and 1 imperfect interpolant sequences [2025-01-08 22:07:45,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955169688] [2025-01-08 22:07:45,609 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-01-08 22:07:45,609 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-01-08 22:07:45,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2025-01-08 22:07:45,614 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) [2025-01-08 22:07:45,617 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 [2025-01-08 22:07:45,707 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 141 statements into 2 equivalence classes.