./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-programs/copysome2-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-programs/copysome2-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 498a9d01a4c9c1e07ef15169be61a1aa89cf7662222e03da034e67869e2f7c71 --- Real Ultimate output --- This is Ultimate 0.3.0-?-e2fb8be-m [2025-03-08 00:27:09,520 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 00:27:09,580 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 00:27:09,584 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 00:27:09,585 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 00:27:09,599 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 00:27:09,600 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 00:27:09,600 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 00:27:09,600 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 00:27:09,600 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 00:27:09,600 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 00:27:09,600 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 00:27:09,600 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 00:27:09,601 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 00:27:09,601 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 00:27:09,601 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 00:27:09,601 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 00:27:09,601 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 00:27:09,601 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 00:27:09,601 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 00:27:09,601 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 00:27:09,601 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 00:27:09,601 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 00:27:09,602 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 00:27:09,602 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 00:27:09,602 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 00:27:09,602 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 00:27:09,602 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 00:27:09,602 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 00:27:09,602 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 00:27:09,602 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 00:27:09,602 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 00:27:09,602 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 00:27:09,603 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 00:27:09,603 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 00:27:09,603 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 00:27:09,603 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 00:27:09,603 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 00:27:09,603 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 00:27:09,603 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 00:27:09,603 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 00:27:09,603 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 00:27:09,603 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 00:27:09,603 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/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 -> 498a9d01a4c9c1e07ef15169be61a1aa89cf7662222e03da034e67869e2f7c71 [2025-03-08 00:27:09,853 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 00:27:09,861 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 00:27:09,863 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 00:27:09,864 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 00:27:09,864 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 00:27:09,865 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-programs/copysome2-2.i [2025-03-08 00:27:11,010 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2352f9be1/99af99e19db8425fb51ca6c20b70064d/FLAG19964d86e [2025-03-08 00:27:11,225 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 00:27:11,226 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-programs/copysome2-2.i [2025-03-08 00:27:11,231 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2352f9be1/99af99e19db8425fb51ca6c20b70064d/FLAG19964d86e [2025-03-08 00:27:11,582 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2352f9be1/99af99e19db8425fb51ca6c20b70064d [2025-03-08 00:27:11,584 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 00:27:11,585 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 00:27:11,586 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 00:27:11,586 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 00:27:11,590 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 00:27:11,591 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 12:27:11" (1/1) ... [2025-03-08 00:27:11,591 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@abc226b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:27:11, skipping insertion in model container [2025-03-08 00:27:11,592 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 12:27:11" (1/1) ... [2025-03-08 00:27:11,607 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 00:27:11,709 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-programs/copysome2-2.i[804,817] [2025-03-08 00:27:11,726 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 00:27:11,736 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 00:27:11,743 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-programs/copysome2-2.i[804,817] [2025-03-08 00:27:11,751 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 00:27:11,766 INFO L204 MainTranslator]: Completed translation [2025-03-08 00:27:11,767 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:27:11 WrapperNode [2025-03-08 00:27:11,767 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 00:27:11,769 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 00:27:11,769 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 00:27:11,769 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 00:27:11,774 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:27:11" (1/1) ... [2025-03-08 00:27:11,779 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:27:11" (1/1) ... [2025-03-08 00:27:11,795 INFO L138 Inliner]: procedures = 16, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 79 [2025-03-08 00:27:11,797 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 00:27:11,797 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 00:27:11,797 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 00:27:11,797 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 00:27:11,803 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:27:11" (1/1) ... [2025-03-08 00:27:11,803 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:27:11" (1/1) ... [2025-03-08 00:27:11,809 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:27:11" (1/1) ... [2025-03-08 00:27:11,822 INFO L175 MemorySlicer]: Split 13 memory accesses to 4 slices as follows [2, 4, 4, 3]. 31 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, 3, 1]. [2025-03-08 00:27:11,825 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:27:11" (1/1) ... [2025-03-08 00:27:11,826 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:27:11" (1/1) ... [2025-03-08 00:27:11,829 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:27:11" (1/1) ... [2025-03-08 00:27:11,834 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:27:11" (1/1) ... [2025-03-08 00:27:11,838 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:27:11" (1/1) ... [2025-03-08 00:27:11,838 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:27:11" (1/1) ... [2025-03-08 00:27:11,839 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 00:27:11,840 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 00:27:11,840 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 00:27:11,840 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 00:27:11,841 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:27:11" (1/1) ... [2025-03-08 00:27:11,848 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 00:27:11,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:27:11,871 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 00:27:11,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 00:27:11,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 00:27:11,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 00:27:11,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-08 00:27:11,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-08 00:27:11,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2025-03-08 00:27:11,895 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-08 00:27:11,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-08 00:27:11,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-08 00:27:11,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-08 00:27:11,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2025-03-08 00:27:11,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 00:27:11,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 00:27:11,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-08 00:27:11,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-08 00:27:11,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-08 00:27:11,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2025-03-08 00:27:11,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-08 00:27:11,948 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 00:27:11,949 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 00:27:12,084 INFO L1307 $ProcedureCfgBuilder]: dead code at ProgramPoint L16: call ULTIMATE.dealloc(main_~#a1~0#1.base, main_~#a1~0#1.offset);havoc main_~#a1~0#1.base, main_~#a1~0#1.offset;call ULTIMATE.dealloc(main_~#a2~0#1.base, main_~#a2~0#1.offset);havoc main_~#a2~0#1.base, main_~#a2~0#1.offset;call ULTIMATE.dealloc(main_~#a3~0#1.base, main_~#a3~0#1.offset);havoc main_~#a3~0#1.base, main_~#a3~0#1.offset; [2025-03-08 00:27:12,093 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2025-03-08 00:27:12,094 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 00:27:12,102 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 00:27:12,102 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 00:27:12,103 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 12:27:12 BoogieIcfgContainer [2025-03-08 00:27:12,103 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 00:27:12,106 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 00:27:12,106 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 00:27:12,109 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 00:27:12,110 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 12:27:11" (1/3) ... [2025-03-08 00:27:12,111 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d08da62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 12:27:12, skipping insertion in model container [2025-03-08 00:27:12,111 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:27:11" (2/3) ... [2025-03-08 00:27:12,111 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d08da62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 12:27:12, skipping insertion in model container [2025-03-08 00:27:12,111 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 12:27:12" (3/3) ... [2025-03-08 00:27:12,112 INFO L128 eAbstractionObserver]: Analyzing ICFG copysome2-2.i [2025-03-08 00:27:12,123 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 00:27:12,124 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG copysome2-2.i that has 1 procedures, 17 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2025-03-08 00:27:12,158 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 00:27:12,167 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;@617d8653, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 00:27:12,167 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 00:27:12,171 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) [2025-03-08 00:27:12,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-08 00:27:12,176 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:27:12,177 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:27:12,177 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:27:12,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:27:12,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1740535303, now seen corresponding path program 1 times [2025-03-08 00:27:12,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:27:12,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543210791] [2025-03-08 00:27:12,190 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:27:12,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:27:12,254 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-08 00:27:12,270 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-08 00:27:12,272 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:27:12,272 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:27:12,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 00:27:12,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:27:12,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543210791] [2025-03-08 00:27:12,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543210791] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 00:27:12,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 00:27:12,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 00:27:12,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417841581] [2025-03-08 00:27:12,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 00:27:12,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 00:27:12,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:27:12,359 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 00:27:12,360 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 00:27:12,361 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 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:27:12,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:27:12,423 INFO L93 Difference]: Finished difference Result 38 states and 54 transitions. [2025-03-08 00:27:12,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 00:27:12,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2025-03-08 00:27:12,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:27:12,429 INFO L225 Difference]: With dead ends: 38 [2025-03-08 00:27:12,429 INFO L226 Difference]: Without dead ends: 21 [2025-03-08 00:27:12,431 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 [2025-03-08 00:27:12,433 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 00:27:12,434 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 21 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 00:27:12,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2025-03-08 00:27:12,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 17. [2025-03-08 00:27:12,452 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) [2025-03-08 00:27:12,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2025-03-08 00:27:12,456 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 22 transitions. Word has length 8 [2025-03-08 00:27:12,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:27:12,456 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 22 transitions. [2025-03-08 00:27:12,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:27:12,457 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 22 transitions. [2025-03-08 00:27:12,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-03-08 00:27:12,457 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:27:12,457 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:27:12,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 00:27:12,457 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:27:12,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:27:12,459 INFO L85 PathProgramCache]: Analyzing trace with hash 570138575, now seen corresponding path program 1 times [2025-03-08 00:27:12,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:27:12,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130253372] [2025-03-08 00:27:12,459 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:27:12,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:27:12,477 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-08 00:27:12,487 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-08 00:27:12,487 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:27:12,487 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:27:12,564 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-08 00:27:12,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:27:12,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130253372] [2025-03-08 00:27:12,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130253372] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 00:27:12,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902234679] [2025-03-08 00:27:12,565 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:27:12,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:27:12,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:27:12,567 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 00:27:12,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 00:27:12,621 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-08 00:27:12,639 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-08 00:27:12,639 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:27:12,639 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:27:12,641 INFO L256 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 00:27:12,647 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 00:27:12,678 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-08 00:27:12,678 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 00:27:12,697 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-08 00:27:12,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [902234679] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 00:27:12,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 00:27:12,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-03-08 00:27:12,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418119679] [2025-03-08 00:27:12,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 00:27:12,698 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 00:27:12,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:27:12,698 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 00:27:12,698 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-08 00:27:12,699 INFO L87 Difference]: Start difference. First operand 17 states and 22 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 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) [2025-03-08 00:27:12,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:27:12,776 INFO L93 Difference]: Finished difference Result 51 states and 75 transitions. [2025-03-08 00:27:12,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 00:27:12,777 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 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 15 [2025-03-08 00:27:12,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:27:12,777 INFO L225 Difference]: With dead ends: 51 [2025-03-08 00:27:12,777 INFO L226 Difference]: Without dead ends: 38 [2025-03-08 00:27:12,778 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 [2025-03-08 00:27:12,778 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 36 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 00:27:12,778 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 28 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 00:27:12,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2025-03-08 00:27:12,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2025-03-08 00:27:12,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.3243243243243243) internal successors, (49), 37 states have internal predecessors, (49), 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) [2025-03-08 00:27:12,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 49 transitions. [2025-03-08 00:27:12,805 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 49 transitions. Word has length 15 [2025-03-08 00:27:12,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:27:12,806 INFO L471 AbstractCegarLoop]: Abstraction has 38 states and 49 transitions. [2025-03-08 00:27:12,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 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) [2025-03-08 00:27:12,806 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 49 transitions. [2025-03-08 00:27:12,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2025-03-08 00:27:12,808 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:27:12,808 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:27:12,815 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 00:27:13,008 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:27:13,009 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:27:13,010 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:27:13,010 INFO L85 PathProgramCache]: Analyzing trace with hash -715699975, now seen corresponding path program 2 times [2025-03-08 00:27:13,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:27:13,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122582735] [2025-03-08 00:27:13,011 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 00:27:13,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:27:13,031 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 36 statements into 2 equivalence classes. [2025-03-08 00:27:13,069 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-03-08 00:27:13,069 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 00:27:13,070 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:27:13,233 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2025-03-08 00:27:13,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:27:13,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122582735] [2025-03-08 00:27:13,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122582735] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 00:27:13,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [819418571] [2025-03-08 00:27:13,234 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 00:27:13,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:27:13,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:27:13,236 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 00:27:13,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 00:27:13,301 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 36 statements into 2 equivalence classes. [2025-03-08 00:27:13,338 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 36 of 36 statements. [2025-03-08 00:27:13,338 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 00:27:13,338 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:27:13,340 INFO L256 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-08 00:27:13,342 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 00:27:13,363 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2025-03-08 00:27:13,364 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 00:27:13,424 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2025-03-08 00:27:13,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [819418571] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 00:27:13,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 00:27:13,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-03-08 00:27:13,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642426994] [2025-03-08 00:27:13,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 00:27:13,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-08 00:27:13,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:27:13,425 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-08 00:27:13,425 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-03-08 00:27:13,425 INFO L87 Difference]: Start difference. First operand 38 states and 49 transitions. Second operand has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 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) [2025-03-08 00:27:13,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:27:13,590 INFO L93 Difference]: Finished difference Result 111 states and 162 transitions. [2025-03-08 00:27:13,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-08 00:27:13,591 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 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 36 [2025-03-08 00:27:13,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:27:13,592 INFO L225 Difference]: With dead ends: 111 [2025-03-08 00:27:13,593 INFO L226 Difference]: Without dead ends: 80 [2025-03-08 00:27:13,593 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-03-08 00:27:13,593 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 102 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 00:27:13,594 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 40 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 00:27:13,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2025-03-08 00:27:13,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2025-03-08 00:27:13,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.3037974683544304) internal successors, (103), 79 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:27:13,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 103 transitions. [2025-03-08 00:27:13,605 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 103 transitions. Word has length 36 [2025-03-08 00:27:13,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:27:13,606 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 103 transitions. [2025-03-08 00:27:13,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.0) internal successors, (26), 13 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) [2025-03-08 00:27:13,606 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 103 transitions. [2025-03-08 00:27:13,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2025-03-08 00:27:13,608 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:27:13,608 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:27:13,615 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-08 00:27:13,812 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2025-03-08 00:27:13,812 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:27:13,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:27:13,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1876217991, now seen corresponding path program 3 times [2025-03-08 00:27:13,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:27:13,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661170720] [2025-03-08 00:27:13,813 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 00:27:13,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:27:13,862 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 78 statements into 11 equivalence classes. [2025-03-08 00:27:13,966 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 48 of 78 statements. [2025-03-08 00:27:13,966 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-03-08 00:27:13,966 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:27:14,232 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2025-03-08 00:27:14,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:27:14,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661170720] [2025-03-08 00:27:14,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661170720] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 00:27:14,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445659766] [2025-03-08 00:27:14,233 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 00:27:14,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:27:14,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:27:14,235 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 00:27:14,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 00:27:14,316 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 78 statements into 11 equivalence classes. [2025-03-08 00:27:15,496 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) and asserted 48 of 78 statements. [2025-03-08 00:27:15,496 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2025-03-08 00:27:15,496 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:27:15,500 INFO L256 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-03-08 00:27:15,503 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 00:27:15,550 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2025-03-08 00:27:15,550 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 00:27:15,758 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 0 proven. 83 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2025-03-08 00:27:15,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445659766] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 00:27:15,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 00:27:15,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2025-03-08 00:27:15,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040526465] [2025-03-08 00:27:15,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 00:27:15,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-03-08 00:27:15,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:27:15,761 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-03-08 00:27:15,762 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-03-08 00:27:15,762 INFO L87 Difference]: Start difference. First operand 80 states and 103 transitions. Second operand has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 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) [2025-03-08 00:27:16,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:27:16,055 INFO L93 Difference]: Finished difference Result 231 states and 336 transitions. [2025-03-08 00:27:16,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-03-08 00:27:16,055 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 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 78 [2025-03-08 00:27:16,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:27:16,056 INFO L225 Difference]: With dead ends: 231 [2025-03-08 00:27:16,056 INFO L226 Difference]: Without dead ends: 164 [2025-03-08 00:27:16,057 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-03-08 00:27:16,057 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 448 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 448 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-08 00:27:16,057 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [448 Valid, 40 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-08 00:27:16,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2025-03-08 00:27:16,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2025-03-08 00:27:16,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 163 states have (on average 1.294478527607362) internal successors, (211), 163 states have internal predecessors, (211), 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) [2025-03-08 00:27:16,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 211 transitions. [2025-03-08 00:27:16,078 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 211 transitions. Word has length 78 [2025-03-08 00:27:16,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:27:16,078 INFO L471 AbstractCegarLoop]: Abstraction has 164 states and 211 transitions. [2025-03-08 00:27:16,079 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 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) [2025-03-08 00:27:16,079 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 211 transitions. [2025-03-08 00:27:16,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2025-03-08 00:27:16,084 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:27:16,084 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:27:16,097 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-08 00:27:16,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:27:16,285 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:27:16,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:27:16,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1812122745, now seen corresponding path program 4 times [2025-03-08 00:27:16,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:27:16,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296699662] [2025-03-08 00:27:16,286 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 00:27:16,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:27:16,354 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 162 statements into 2 equivalence classes. [2025-03-08 00:27:16,415 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 162 of 162 statements. [2025-03-08 00:27:16,415 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 00:27:16,415 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:27:17,377 INFO L134 CoverageAnalysis]: Checked inductivity of 1683 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2025-03-08 00:27:17,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:27:17,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296699662] [2025-03-08 00:27:17,378 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296699662] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 00:27:17,378 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886047042] [2025-03-08 00:27:17,378 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 00:27:17,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:27:17,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:27:17,381 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 00:27:17,382 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-08 00:27:17,497 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 162 statements into 2 equivalence classes. [2025-03-08 00:27:20,243 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 162 of 162 statements. [2025-03-08 00:27:20,243 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 00:27:20,243 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:27:20,255 INFO L256 TraceCheckSpWp]: Trace formula consists of 976 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-03-08 00:27:20,263 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 00:27:20,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1683 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2025-03-08 00:27:20,370 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 00:27:21,118 INFO L134 CoverageAnalysis]: Checked inductivity of 1683 backedges. 0 proven. 715 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2025-03-08 00:27:21,118 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1886047042] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 00:27:21,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 00:27:21,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 48 [2025-03-08 00:27:21,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932682577] [2025-03-08 00:27:21,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 00:27:21,119 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2025-03-08 00:27:21,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:27:21,120 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2025-03-08 00:27:21,121 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2025-03-08 00:27:21,122 INFO L87 Difference]: Start difference. First operand 164 states and 211 transitions. Second operand has 48 states, 48 states have (on average 3.0416666666666665) internal successors, (146), 48 states have internal predecessors, (146), 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) [2025-03-08 00:27:21,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:27:21,846 INFO L93 Difference]: Finished difference Result 471 states and 684 transitions. [2025-03-08 00:27:21,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-03-08 00:27:21,849 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 3.0416666666666665) internal successors, (146), 48 states have internal predecessors, (146), 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 162 [2025-03-08 00:27:21,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:27:21,850 INFO L225 Difference]: With dead ends: 471 [2025-03-08 00:27:21,850 INFO L226 Difference]: Without dead ends: 332 [2025-03-08 00:27:21,852 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2025-03-08 00:27:21,852 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 464 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2025-03-08 00:27:21,852 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [464 Valid, 70 Invalid, 708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2025-03-08 00:27:21,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2025-03-08 00:27:21,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2025-03-08 00:27:21,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 331 states have (on average 1.2900302114803626) internal successors, (427), 331 states have internal predecessors, (427), 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) [2025-03-08 00:27:21,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 427 transitions. [2025-03-08 00:27:21,876 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 427 transitions. Word has length 162 [2025-03-08 00:27:21,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:27:21,876 INFO L471 AbstractCegarLoop]: Abstraction has 332 states and 427 transitions. [2025-03-08 00:27:21,876 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 3.0416666666666665) internal successors, (146), 48 states have internal predecessors, (146), 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) [2025-03-08 00:27:21,877 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 427 transitions. [2025-03-08 00:27:21,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2025-03-08 00:27:21,879 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:27:21,879 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:27:21,897 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-08 00:27:22,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:27:22,083 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:27:22,084 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:27:22,084 INFO L85 PathProgramCache]: Analyzing trace with hash -1470019975, now seen corresponding path program 5 times [2025-03-08 00:27:22,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:27:22,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111402585] [2025-03-08 00:27:22,084 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 00:27:22,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:27:22,162 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 330 statements into 47 equivalence classes. [2025-03-08 00:27:23,757 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) and asserted 330 of 330 statements. [2025-03-08 00:27:23,757 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2025-03-08 00:27:23,758 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:27:26,272 INFO L134 CoverageAnalysis]: Checked inductivity of 7383 backedges. 0 proven. 3151 refuted. 0 times theorem prover too weak. 4232 trivial. 0 not checked. [2025-03-08 00:27:26,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:27:26,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111402585] [2025-03-08 00:27:26,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111402585] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 00:27:26,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821555835] [2025-03-08 00:27:26,273 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-08 00:27:26,273 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:27:26,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:27:26,275 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 00:27:26,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-08 00:27:26,504 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 330 statements into 47 equivalence classes.