./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/standard_partition_ground-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 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-examples/standard_partition_ground-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 fcf72d109deb69f1acda4466c7376bd6c362d474983f8a50a2faed8c0a192a76 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 09:06:22,737 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 09:06:22,791 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 09:06:22,795 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 09:06:22,798 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 09:06:22,821 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 09:06:22,822 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 09:06:22,822 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 09:06:22,822 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 09:06:22,822 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 09:06:22,822 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 09:06:22,822 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 09:06:22,822 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 09:06:22,823 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 09:06:22,823 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 09:06:22,823 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 09:06:22,823 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 09:06:22,823 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 09:06:22,823 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 09:06:22,823 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 09:06:22,823 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 09:06:22,823 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 09:06:22,823 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 09:06:22,823 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 09:06:22,823 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 09:06:22,823 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 09:06:22,823 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 09:06:22,825 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 09:06:22,826 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 09:06:22,826 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 09:06:22,826 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 09:06:22,826 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 09:06:22,826 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 09:06:22,826 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 09:06:22,826 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 09:06:22,826 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 09:06:22,827 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 09:06:22,827 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 09:06:22,827 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 09:06:22,827 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 09:06:22,827 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 09:06:22,827 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 09:06:22,827 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 09:06:22,827 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 -> fcf72d109deb69f1acda4466c7376bd6c362d474983f8a50a2faed8c0a192a76 [2025-03-03 09:06:23,050 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 09:06:23,057 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 09:06:23,058 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 09:06:23,059 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 09:06:23,059 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 09:06:23,060 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_partition_ground-2.i [2025-03-03 09:06:24,171 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55e9f1af3/f49ffe1857d7481ebc93ce5bd306b1ab/FLAGe62c20ec7 [2025-03-03 09:06:24,374 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 09:06:24,375 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_partition_ground-2.i [2025-03-03 09:06:24,384 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55e9f1af3/f49ffe1857d7481ebc93ce5bd306b1ab/FLAGe62c20ec7 [2025-03-03 09:06:24,731 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/55e9f1af3/f49ffe1857d7481ebc93ce5bd306b1ab [2025-03-03 09:06:24,733 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 09:06:24,734 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 09:06:24,735 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 09:06:24,735 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 09:06:24,738 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 09:06:24,739 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 09:06:24" (1/1) ... [2025-03-03 09:06:24,741 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c0077c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:06:24, skipping insertion in model container [2025-03-03 09:06:24,741 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 09:06:24" (1/1) ... [2025-03-03 09:06:24,751 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 09:06:24,855 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-examples/standard_partition_ground-2.i[820,833] [2025-03-03 09:06:24,872 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 09:06:24,879 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 09:06:24,887 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-examples/standard_partition_ground-2.i[820,833] [2025-03-03 09:06:24,899 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 09:06:24,921 INFO L204 MainTranslator]: Completed translation [2025-03-03 09:06:24,922 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:06:24 WrapperNode [2025-03-03 09:06:24,922 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 09:06:24,924 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 09:06:24,924 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 09:06:24,924 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 09:06:24,930 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:06:24" (1/1) ... [2025-03-03 09:06:24,937 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:06:24" (1/1) ... [2025-03-03 09:06:24,956 INFO L138 Inliner]: procedures = 16, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 69 [2025-03-03 09:06:24,957 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 09:06:24,958 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 09:06:24,958 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 09:06:24,958 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 09:06:24,965 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:06:24" (1/1) ... [2025-03-03 09:06:24,965 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:06:24" (1/1) ... [2025-03-03 09:06:24,967 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:06:24" (1/1) ... [2025-03-03 09:06:24,978 INFO L175 MemorySlicer]: Split 9 memory accesses to 3 slices as follows [2, 5, 2]. 56 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2025-03-03 09:06:24,979 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:06:24" (1/1) ... [2025-03-03 09:06:24,979 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:06:24" (1/1) ... [2025-03-03 09:06:24,984 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:06:24" (1/1) ... [2025-03-03 09:06:24,985 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:06:24" (1/1) ... [2025-03-03 09:06:24,986 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:06:24" (1/1) ... [2025-03-03 09:06:24,986 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:06:24" (1/1) ... [2025-03-03 09:06:24,988 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 09:06:24,989 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 09:06:24,989 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 09:06:24,989 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 09:06:24,990 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:06:24" (1/1) ... [2025-03-03 09:06:24,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 09:06:25,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:06:25,018 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) [2025-03-03 09:06:25,021 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 [2025-03-03 09:06:25,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 09:06:25,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 09:06:25,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-03 09:06:25,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-03 09:06:25,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-03 09:06:25,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-03 09:06:25,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-03 09:06:25,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-03 09:06:25,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 09:06:25,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 09:06:25,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-03 09:06:25,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-03 09:06:25,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-03 09:06:25,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-03 09:06:25,090 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 09:06:25,091 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 09:06:25,189 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L17: call ULTIMATE.dealloc(main_~#aa~0#1.base, main_~#aa~0#1.offset);havoc main_~#aa~0#1.base, main_~#aa~0#1.offset;call ULTIMATE.dealloc(main_~#bb~0#1.base, main_~#bb~0#1.offset);havoc main_~#bb~0#1.base, main_~#bb~0#1.offset; [2025-03-03 09:06:25,193 INFO L? ?]: Removed 9 outVars from TransFormulas that were not future-live. [2025-03-03 09:06:25,194 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 09:06:25,200 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 09:06:25,200 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 09:06:25,200 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 09:06:25 BoogieIcfgContainer [2025-03-03 09:06:25,200 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 09:06:25,202 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 09:06:25,202 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 09:06:25,205 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 09:06:25,205 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 09:06:24" (1/3) ... [2025-03-03 09:06:25,206 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16d99fdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 09:06:25, skipping insertion in model container [2025-03-03 09:06:25,206 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:06:24" (2/3) ... [2025-03-03 09:06:25,206 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16d99fdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 09:06:25, skipping insertion in model container [2025-03-03 09:06:25,206 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 09:06:25" (3/3) ... [2025-03-03 09:06:25,207 INFO L128 eAbstractionObserver]: Analyzing ICFG standard_partition_ground-2.i [2025-03-03 09:06:25,217 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 09:06:25,218 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG standard_partition_ground-2.i that has 1 procedures, 17 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2025-03-03 09:06:25,256 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 09:06:25,264 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;@dcb3802, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 09:06:25,266 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 09:06:25,269 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) [2025-03-03 09:06:25,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2025-03-03 09:06:25,273 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:06:25,273 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:06:25,273 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:06:25,276 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:06:25,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1740535303, now seen corresponding path program 1 times [2025-03-03 09:06:25,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:06:25,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70758249] [2025-03-03 09:06:25,285 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:06:25,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:06:25,331 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 8 statements into 1 equivalence classes. [2025-03-03 09:06:25,342 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 8 of 8 statements. [2025-03-03 09:06:25,342 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:06:25,342 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:06:25,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 09:06:25,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:06:25,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70758249] [2025-03-03 09:06:25,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70758249] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:06:25,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:06:25,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 09:06:25,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197941406] [2025-03-03 09:06:25,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:06:25,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:06:25,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:06:25,426 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:06:25,426 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 09:06:25,428 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) [2025-03-03 09:06:25,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:06:25,448 INFO L93 Difference]: Finished difference Result 32 states and 44 transitions. [2025-03-03 09:06:25,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:06:25,450 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 [2025-03-03 09:06:25,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:06:25,454 INFO L225 Difference]: With dead ends: 32 [2025-03-03 09:06:25,454 INFO L226 Difference]: Without dead ends: 15 [2025-03-03 09:06:25,456 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 [2025-03-03 09:06:25,457 INFO L435 NwaCegarLoop]: 21 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 09:06:25,458 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 09:06:25,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2025-03-03 09:06:25,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2025-03-03 09:06:25,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 14 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) [2025-03-03 09:06:25,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 20 transitions. [2025-03-03 09:06:25,478 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 20 transitions. Word has length 8 [2025-03-03 09:06:25,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:06:25,478 INFO L471 AbstractCegarLoop]: Abstraction has 15 states and 20 transitions. [2025-03-03 09:06:25,479 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) [2025-03-03 09:06:25,479 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 20 transitions. [2025-03-03 09:06:25,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2025-03-03 09:06:25,480 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:06:25,480 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:06:25,481 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-03 09:06:25,481 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:06:25,481 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:06:25,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1381688050, now seen corresponding path program 1 times [2025-03-03 09:06:25,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:06:25,482 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554548034] [2025-03-03 09:06:25,482 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:06:25,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:06:25,493 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 9 statements into 1 equivalence classes. [2025-03-03 09:06:25,504 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 9 of 9 statements. [2025-03-03 09:06:25,504 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:06:25,504 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:06:25,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2025-03-03 09:06:25,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:06:25,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554548034] [2025-03-03 09:06:25,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554548034] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:06:25,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:06:25,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 09:06:25,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893371345] [2025-03-03 09:06:25,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:06:25,553 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:06:25,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:06:25,554 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:06:25,554 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 09:06:25,554 INFO L87 Difference]: Start difference. First operand 15 states and 20 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:06:25,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:06:25,587 INFO L93 Difference]: Finished difference Result 29 states and 40 transitions. [2025-03-03 09:06:25,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:06:25,587 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2025-03-03 09:06:25,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:06:25,588 INFO L225 Difference]: With dead ends: 29 [2025-03-03 09:06:25,588 INFO L226 Difference]: Without dead ends: 21 [2025-03-03 09:06:25,591 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 [2025-03-03 09:06:25,592 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 6 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 09:06:25,592 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 21 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 09:06:25,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2025-03-03 09:06:25,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 17. [2025-03-03 09:06:25,594 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) [2025-03-03 09:06:25,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 22 transitions. [2025-03-03 09:06:25,595 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 22 transitions. Word has length 9 [2025-03-03 09:06:25,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:06:25,595 INFO L471 AbstractCegarLoop]: Abstraction has 17 states and 22 transitions. [2025-03-03 09:06:25,595 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:06:25,595 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 22 transitions. [2025-03-03 09:06:25,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2025-03-03 09:06:25,595 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:06:25,595 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:06:25,595 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-03 09:06:25,597 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:06:25,597 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:06:25,598 INFO L85 PathProgramCache]: Analyzing trace with hash 570138575, now seen corresponding path program 1 times [2025-03-03 09:06:25,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:06:25,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587316975] [2025-03-03 09:06:25,598 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:06:25,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:06:25,610 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-03 09:06:25,617 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-03 09:06:25,617 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:06:25,618 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:06:25,673 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-03 09:06:25,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:06:25,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587316975] [2025-03-03 09:06:25,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587316975] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 09:06:25,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250736022] [2025-03-03 09:06:25,673 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:06:25,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:06:25,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:06:25,679 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) [2025-03-03 09:06:25,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-03 09:06:25,726 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 15 statements into 1 equivalence classes. [2025-03-03 09:06:25,745 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 15 of 15 statements. [2025-03-03 09:06:25,746 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:06:25,746 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:06:25,747 INFO L256 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 09:06:25,749 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 09:06:25,775 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-03 09:06:25,775 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 09:06:25,800 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-03 09:06:25,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250736022] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 09:06:25,800 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 09:06:25,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-03-03 09:06:25,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513653265] [2025-03-03 09:06:25,800 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 09:06:25,800 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 09:06:25,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:06:25,801 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 09:06:25,801 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-03 09:06:25,801 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) [2025-03-03 09:06:25,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:06:25,813 INFO L93 Difference]: Finished difference Result 33 states and 45 transitions. [2025-03-03 09:06:25,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 09:06:25,814 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 [2025-03-03 09:06:25,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:06:25,815 INFO L225 Difference]: With dead ends: 33 [2025-03-03 09:06:25,815 INFO L226 Difference]: Without dead ends: 20 [2025-03-03 09:06:25,816 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 [2025-03-03 09:06:25,816 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 09:06:25,816 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 09:06:25,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2025-03-03 09:06:25,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2025-03-03 09:06:25,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 19 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:06:25,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 25 transitions. [2025-03-03 09:06:25,821 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 25 transitions. Word has length 15 [2025-03-03 09:06:25,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:06:25,821 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 25 transitions. [2025-03-03 09:06:25,821 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) [2025-03-03 09:06:25,821 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 25 transitions. [2025-03-03 09:06:25,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-03-03 09:06:25,822 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:06:25,822 INFO L218 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:06:25,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-03 09:06:26,023 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:06:26,024 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:06:26,024 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:06:26,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1859445318, now seen corresponding path program 2 times [2025-03-03 09:06:26,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:06:26,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379427630] [2025-03-03 09:06:26,024 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 09:06:26,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:06:26,035 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-03-03 09:06:26,069 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-03 09:06:26,069 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 09:06:26,069 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:06:26,123 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2025-03-03 09:06:26,124 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:06:26,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379427630] [2025-03-03 09:06:26,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379427630] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 09:06:26,124 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1701007988] [2025-03-03 09:06:26,124 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 09:06:26,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:06:26,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:06:26,129 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) [2025-03-03 09:06:26,135 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-03 09:06:26,185 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 18 statements into 2 equivalence classes. [2025-03-03 09:06:26,209 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 18 of 18 statements. [2025-03-03 09:06:26,209 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 09:06:26,209 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:06:26,210 INFO L256 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-03 09:06:26,211 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 09:06:26,258 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-03 09:06:26,259 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 09:06:26,350 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-03 09:06:26,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1701007988] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 09:06:26,350 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 09:06:26,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2025-03-03 09:06:26,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852625530] [2025-03-03 09:06:26,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 09:06:26,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-03 09:06:26,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:06:26,351 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-03 09:06:26,351 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2025-03-03 09:06:26,352 INFO L87 Difference]: Start difference. First operand 20 states and 25 transitions. Second operand has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 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) [2025-03-03 09:06:26,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:06:26,496 INFO L93 Difference]: Finished difference Result 49 states and 70 transitions. [2025-03-03 09:06:26,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-03 09:06:26,497 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 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 18 [2025-03-03 09:06:26,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:06:26,498 INFO L225 Difference]: With dead ends: 49 [2025-03-03 09:06:26,498 INFO L226 Difference]: Without dead ends: 36 [2025-03-03 09:06:26,498 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=211, Invalid=341, Unknown=0, NotChecked=0, Total=552 [2025-03-03 09:06:26,499 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 14 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 09:06:26,499 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 72 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 09:06:26,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2025-03-03 09:06:26,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2025-03-03 09:06:26,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 31 states have internal predecessors, (39), 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) [2025-03-03 09:06:26,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2025-03-03 09:06:26,506 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 18 [2025-03-03 09:06:26,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:06:26,507 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2025-03-03 09:06:26,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.2142857142857144) internal successors, (31), 14 states have internal predecessors, (31), 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) [2025-03-03 09:06:26,508 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2025-03-03 09:06:26,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2025-03-03 09:06:26,508 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:06:26,508 INFO L218 NwaCegarLoop]: trace histogram [10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:06:26,514 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-03 09:06:26,708 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,SelfDestructingSolverStorable3 [2025-03-03 09:06:26,709 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:06:26,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:06:26,709 INFO L85 PathProgramCache]: Analyzing trace with hash 1451256825, now seen corresponding path program 3 times [2025-03-03 09:06:26,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:06:26,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709083570] [2025-03-03 09:06:26,709 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-03 09:06:26,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:06:26,724 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 30 statements into 6 equivalence classes. [2025-03-03 09:06:26,748 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 24 of 30 statements. [2025-03-03 09:06:26,750 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-03 09:06:26,753 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:06:26,813 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2025-03-03 09:06:26,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:06:26,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709083570] [2025-03-03 09:06:26,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709083570] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 09:06:26,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256687106] [2025-03-03 09:06:26,814 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-03 09:06:26,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:06:26,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:06:26,816 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) [2025-03-03 09:06:26,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-03 09:06:26,858 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 30 statements into 6 equivalence classes. [2025-03-03 09:06:26,879 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 24 of 30 statements. [2025-03-03 09:06:26,879 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-03 09:06:26,879 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:06:26,880 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 4 conjuncts are in the unsatisfiable core [2025-03-03 09:06:26,881 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 09:06:26,910 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2025-03-03 09:06:26,910 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 09:06:26,941 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2025-03-03 09:06:26,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256687106] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 09:06:26,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 09:06:26,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2025-03-03 09:06:26,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45920912] [2025-03-03 09:06:26,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 09:06:26,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2025-03-03 09:06:26,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:06:26,942 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2025-03-03 09:06:26,942 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2025-03-03 09:06:26,942 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 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) [2025-03-03 09:06:27,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:06:27,011 INFO L93 Difference]: Finished difference Result 68 states and 94 transitions. [2025-03-03 09:06:27,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 09:06:27,012 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2025-03-03 09:06:27,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:06:27,012 INFO L225 Difference]: With dead ends: 68 [2025-03-03 09:06:27,012 INFO L226 Difference]: Without dead ends: 56 [2025-03-03 09:06:27,013 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2025-03-03 09:06:27,013 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 62 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 09:06:27,013 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 37 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 09:06:27,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2025-03-03 09:06:27,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2025-03-03 09:06:27,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 55 states have (on average 1.290909090909091) internal successors, (71), 55 states have internal predecessors, (71), 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) [2025-03-03 09:06:27,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 71 transitions. [2025-03-03 09:06:27,018 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 71 transitions. Word has length 30 [2025-03-03 09:06:27,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:06:27,018 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 71 transitions. [2025-03-03 09:06:27,018 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 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) [2025-03-03 09:06:27,018 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 71 transitions. [2025-03-03 09:06:27,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2025-03-03 09:06:27,019 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:06:27,019 INFO L218 NwaCegarLoop]: trace histogram [10, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:06:27,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-03 09:06:27,221 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:06:27,221 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:06:27,221 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:06:27,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1459936697, now seen corresponding path program 4 times [2025-03-03 09:06:27,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:06:27,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016024625] [2025-03-03 09:06:27,221 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-03 09:06:27,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:06:27,247 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 54 statements into 2 equivalence classes. [2025-03-03 09:06:27,269 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 54 of 54 statements. [2025-03-03 09:06:27,269 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-03 09:06:27,269 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:06:27,410 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2025-03-03 09:06:27,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:06:27,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016024625] [2025-03-03 09:06:27,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016024625] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 09:06:27,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1973825207] [2025-03-03 09:06:27,411 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-03 09:06:27,411 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:06:27,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:06:27,413 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) [2025-03-03 09:06:27,414 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-03 09:06:27,463 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 54 statements into 2 equivalence classes. [2025-03-03 09:06:27,497 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 54 of 54 statements. [2025-03-03 09:06:27,497 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-03 09:06:27,497 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:06:27,498 INFO L256 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-03 09:06:27,499 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 09:06:27,540 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2025-03-03 09:06:27,541 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 09:06:27,654 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2025-03-03 09:06:27,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1973825207] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 09:06:27,655 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 09:06:27,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2025-03-03 09:06:27,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195352570] [2025-03-03 09:06:27,655 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 09:06:27,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2025-03-03 09:06:27,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:06:27,656 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2025-03-03 09:06:27,656 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2025-03-03 09:06:27,656 INFO L87 Difference]: Start difference. First operand 56 states and 71 transitions. Second operand has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:06:27,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:06:27,784 INFO L93 Difference]: Finished difference Result 128 states and 182 transitions. [2025-03-03 09:06:27,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-03 09:06:27,784 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2025-03-03 09:06:27,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:06:27,785 INFO L225 Difference]: With dead ends: 128 [2025-03-03 09:06:27,785 INFO L226 Difference]: Without dead ends: 104 [2025-03-03 09:06:27,786 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2025-03-03 09:06:27,786 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 156 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 09:06:27,786 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 57 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 09:06:27,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2025-03-03 09:06:27,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2025-03-03 09:06:27,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.3106796116504855) internal successors, (135), 103 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:06:27,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 135 transitions. [2025-03-03 09:06:27,793 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 135 transitions. Word has length 54 [2025-03-03 09:06:27,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:06:27,793 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 135 transitions. [2025-03-03 09:06:27,793 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.25) internal successors, (52), 16 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:06:27,793 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 135 transitions. [2025-03-03 09:06:27,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2025-03-03 09:06:27,795 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:06:27,795 INFO L218 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:06:27,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-03 09:06:27,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:06:27,995 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:06:27,996 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:06:27,996 INFO L85 PathProgramCache]: Analyzing trace with hash -895262407, now seen corresponding path program 5 times [2025-03-03 09:06:27,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:06:27,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097568112] [2025-03-03 09:06:27,996 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-03 09:06:27,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:06:28,013 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 102 statements into 15 equivalence classes. [2025-03-03 09:06:28,104 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) and asserted 102 of 102 statements. [2025-03-03 09:06:28,104 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2025-03-03 09:06:28,104 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:06:28,449 INFO L134 CoverageAnalysis]: Checked inductivity of 629 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2025-03-03 09:06:28,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:06:28,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097568112] [2025-03-03 09:06:28,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097568112] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 09:06:28,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054615687] [2025-03-03 09:06:28,450 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-03 09:06:28,450 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:06:28,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:06:28,452 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) [2025-03-03 09:06:28,453 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-03 09:06:28,540 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 102 statements into 15 equivalence classes. [2025-03-03 09:06:37,554 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) and asserted 102 of 102 statements. [2025-03-03 09:06:37,555 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 15 check-sat command(s) [2025-03-03 09:06:37,555 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:06:37,567 INFO L256 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-03 09:06:37,570 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 09:06:37,665 INFO L134 CoverageAnalysis]: Checked inductivity of 629 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2025-03-03 09:06:37,665 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 09:06:38,004 INFO L134 CoverageAnalysis]: Checked inductivity of 629 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2025-03-03 09:06:38,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054615687] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 09:06:38,005 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 09:06:38,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 32 [2025-03-03 09:06:38,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243656657] [2025-03-03 09:06:38,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 09:06:38,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2025-03-03 09:06:38,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:06:38,006 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2025-03-03 09:06:38,006 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2025-03-03 09:06:38,008 INFO L87 Difference]: Start difference. First operand 104 states and 135 transitions. Second operand has 32 states, 32 states have (on average 3.0625) internal successors, (98), 32 states have internal predecessors, (98), 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) [2025-03-03 09:06:38,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:06:38,293 INFO L93 Difference]: Finished difference Result 248 states and 358 transitions. [2025-03-03 09:06:38,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2025-03-03 09:06:38,293 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 3.0625) internal successors, (98), 32 states have internal predecessors, (98), 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 102 [2025-03-03 09:06:38,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:06:38,295 INFO L225 Difference]: With dead ends: 248 [2025-03-03 09:06:38,295 INFO L226 Difference]: Without dead ends: 200 [2025-03-03 09:06:38,296 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2025-03-03 09:06:38,296 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 418 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-03 09:06:38,297 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 89 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-03 09:06:38,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2025-03-03 09:06:38,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2025-03-03 09:06:38,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 1.321608040201005) internal successors, (263), 199 states have internal predecessors, (263), 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) [2025-03-03 09:06:38,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 263 transitions. [2025-03-03 09:06:38,306 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 263 transitions. Word has length 102 [2025-03-03 09:06:38,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:06:38,306 INFO L471 AbstractCegarLoop]: Abstraction has 200 states and 263 transitions. [2025-03-03 09:06:38,306 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.0625) internal successors, (98), 32 states have internal predecessors, (98), 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) [2025-03-03 09:06:38,306 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 263 transitions. [2025-03-03 09:06:38,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2025-03-03 09:06:38,313 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:06:38,313 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 30, 30, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:06:38,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-03 09:06:38,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:06:38,514 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:06:38,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:06:38,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1467410489, now seen corresponding path program 6 times [2025-03-03 09:06:38,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:06:38,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665180428] [2025-03-03 09:06:38,515 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-03 09:06:38,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:06:38,542 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 198 statements into 31 equivalence classes. [2025-03-03 09:06:38,557 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) and asserted 36 of 198 statements. [2025-03-03 09:06:38,558 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2025-03-03 09:06:38,558 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:06:38,794 INFO L134 CoverageAnalysis]: Checked inductivity of 2725 backedges. 59 proven. 59 refuted. 0 times theorem prover too weak. 2607 trivial. 0 not checked. [2025-03-03 09:06:38,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:06:38,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665180428] [2025-03-03 09:06:38,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665180428] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 09:06:38,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400563866] [2025-03-03 09:06:38,794 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2025-03-03 09:06:38,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:06:38,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:06:38,798 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 09:06:38,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-03 09:06:38,885 INFO L108 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE partitioned 198 statements into 31 equivalence classes. [2025-03-03 09:06:38,908 INFO L111 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) and asserted 36 of 198 statements. [2025-03-03 09:06:38,909 INFO L114 AnnotateAndAsserter]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2025-03-03 09:06:38,909 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:06:38,910 INFO L256 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-03 09:06:38,917 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 09:06:39,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2025-03-03 09:06:39,232 INFO L134 CoverageAnalysis]: Checked inductivity of 2725 backedges. 59 proven. 59 refuted. 0 times theorem prover too weak. 2607 trivial. 0 not checked. [2025-03-03 09:06:39,232 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 09:06:39,390 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2025-03-03 09:06:39,390 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 12 [2025-03-03 09:06:39,412 INFO L134 CoverageAnalysis]: Checked inductivity of 2725 backedges. 88 proven. 30 refuted. 0 times theorem prover too weak. 2607 trivial. 0 not checked. [2025-03-03 09:06:39,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400563866] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 09:06:39,412 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 09:06:39,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-03-03 09:06:39,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770533453] [2025-03-03 09:06:39,413 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 09:06:39,413 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-03 09:06:39,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:06:39,414 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-03 09:06:39,414 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2025-03-03 09:06:39,414 INFO L87 Difference]: Start difference. First operand 200 states and 263 transitions. Second operand has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:06:39,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:06:39,487 INFO L93 Difference]: Finished difference Result 479 states and 633 transitions. [2025-03-03 09:06:39,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 09:06:39,487 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 198 [2025-03-03 09:06:39,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:06:39,491 INFO L225 Difference]: With dead ends: 479 [2025-03-03 09:06:39,491 INFO L226 Difference]: Without dead ends: 385 [2025-03-03 09:06:39,491 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 391 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2025-03-03 09:06:39,492 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 22 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 09:06:39,492 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 82 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 09:06:39,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2025-03-03 09:06:39,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 291. [2025-03-03 09:06:39,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 290 states have (on average 1.3241379310344827) internal successors, (384), 290 states have internal predecessors, (384), 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) [2025-03-03 09:06:39,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 384 transitions. [2025-03-03 09:06:39,517 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 384 transitions. Word has length 198 [2025-03-03 09:06:39,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:06:39,518 INFO L471 AbstractCegarLoop]: Abstraction has 291 states and 384 transitions. [2025-03-03 09:06:39,518 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:06:39,518 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 384 transitions. [2025-03-03 09:06:39,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2025-03-03 09:06:39,520 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:06:39,520 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 30, 29, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:06:39,527 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-03 09:06:39,721 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:06:39,721 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:06:39,721 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:06:39,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1025655994, now seen corresponding path program 1 times [2025-03-03 09:06:39,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:06:39,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997935572] [2025-03-03 09:06:39,721 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:06:39,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:06:39,749 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 198 statements into 1 equivalence classes. [2025-03-03 09:06:39,769 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 198 of 198 statements. [2025-03-03 09:06:39,770 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:06:39,770 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:06:40,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2725 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2670 trivial. 0 not checked. [2025-03-03 09:06:40,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:06:40,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997935572] [2025-03-03 09:06:40,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997935572] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 09:06:40,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906219386] [2025-03-03 09:06:40,130 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:06:40,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:06:40,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:06:40,132 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 09:06:40,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-03 09:06:40,223 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 198 statements into 1 equivalence classes. [2025-03-03 09:06:40,296 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 198 of 198 statements. [2025-03-03 09:06:40,297 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:06:40,297 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:06:40,302 INFO L256 TraceCheckSpWp]: Trace formula consists of 839 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-03 09:06:40,305 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 09:06:40,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2725 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2670 trivial. 0 not checked. [2025-03-03 09:06:40,326 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 09:06:40,474 INFO L134 CoverageAnalysis]: Checked inductivity of 2725 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 2670 trivial. 0 not checked. [2025-03-03 09:06:40,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906219386] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 09:06:40,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 09:06:40,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2025-03-03 09:06:40,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078299710] [2025-03-03 09:06:40,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 09:06:40,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-03-03 09:06:40,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:06:40,476 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-03-03 09:06:40,476 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-03-03 09:06:40,476 INFO L87 Difference]: Start difference. First operand 291 states and 384 transitions. Second operand has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 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) [2025-03-03 09:06:40,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:06:40,498 INFO L93 Difference]: Finished difference Result 581 states and 778 transitions. [2025-03-03 09:06:40,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-03-03 09:06:40,499 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 198 [2025-03-03 09:06:40,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:06:40,500 INFO L225 Difference]: With dead ends: 581 [2025-03-03 09:06:40,500 INFO L226 Difference]: Without dead ends: 303 [2025-03-03 09:06:40,501 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 384 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-03-03 09:06:40,501 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 09:06:40,501 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 09:06:40,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2025-03-03 09:06:40,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 303. [2025-03-03 09:06:40,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 302 states have (on average 1.3112582781456954) internal successors, (396), 302 states have internal predecessors, (396), 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) [2025-03-03 09:06:40,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 396 transitions. [2025-03-03 09:06:40,530 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 396 transitions. Word has length 198 [2025-03-03 09:06:40,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:06:40,530 INFO L471 AbstractCegarLoop]: Abstraction has 303 states and 396 transitions. [2025-03-03 09:06:40,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.56) internal successors, (39), 25 states have internal predecessors, (39), 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) [2025-03-03 09:06:40,530 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 396 transitions. [2025-03-03 09:06:40,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2025-03-03 09:06:40,531 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:06:40,535 INFO L218 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 30, 29, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:06:40,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2025-03-03 09:06:40,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:06:40,736 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:06:40,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:06:40,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1190843270, now seen corresponding path program 2 times [2025-03-03 09:06:40,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:06:40,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388911718] [2025-03-03 09:06:40,737 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 09:06:40,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:06:40,764 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 210 statements into 2 equivalence classes. [2025-03-03 09:06:40,791 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 210 of 210 statements. [2025-03-03 09:06:40,794 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 09:06:40,794 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:06:41,565 INFO L134 CoverageAnalysis]: Checked inductivity of 2923 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2670 trivial. 0 not checked. [2025-03-03 09:06:41,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:06:41,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388911718] [2025-03-03 09:06:41,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388911718] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 09:06:41,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [585936946] [2025-03-03 09:06:41,567 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 09:06:41,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:06:41,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:06:41,569 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 09:06:41,570 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-03 09:06:41,669 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 210 statements into 2 equivalence classes. [2025-03-03 09:06:41,762 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 210 of 210 statements. [2025-03-03 09:06:41,762 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 09:06:41,762 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:06:41,765 INFO L256 TraceCheckSpWp]: Trace formula consists of 947 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-03-03 09:06:41,768 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 09:06:41,825 INFO L134 CoverageAnalysis]: Checked inductivity of 2923 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2670 trivial. 0 not checked. [2025-03-03 09:06:41,825 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 09:06:42,401 INFO L134 CoverageAnalysis]: Checked inductivity of 2923 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2670 trivial. 0 not checked. [2025-03-03 09:06:42,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [585936946] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 09:06:42,402 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 09:06:42,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2025-03-03 09:06:42,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119588156] [2025-03-03 09:06:42,402 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 09:06:42,402 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2025-03-03 09:06:42,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:06:42,403 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2025-03-03 09:06:42,404 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2025-03-03 09:06:42,404 INFO L87 Difference]: Start difference. First operand 303 states and 396 transitions. Second operand has 49 states, 49 states have (on average 1.2857142857142858) internal successors, (63), 49 states have internal predecessors, (63), 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) [2025-03-03 09:06:42,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:06:42,447 INFO L93 Difference]: Finished difference Result 605 states and 814 transitions. [2025-03-03 09:06:42,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-03-03 09:06:42,448 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.2857142857142858) internal successors, (63), 49 states have internal predecessors, (63), 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 210 [2025-03-03 09:06:42,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:06:42,449 INFO L225 Difference]: With dead ends: 605 [2025-03-03 09:06:42,449 INFO L226 Difference]: Without dead ends: 327 [2025-03-03 09:06:42,450 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 396 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2025-03-03 09:06:42,450 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 09:06:42,451 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 114 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 09:06:42,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2025-03-03 09:06:42,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2025-03-03 09:06:42,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 326 states have (on average 1.2883435582822085) internal successors, (420), 326 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:06:42,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 420 transitions. [2025-03-03 09:06:42,459 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 420 transitions. Word has length 210 [2025-03-03 09:06:42,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:06:42,460 INFO L471 AbstractCegarLoop]: Abstraction has 327 states and 420 transitions. [2025-03-03 09:06:42,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.2857142857142858) internal successors, (63), 49 states have internal predecessors, (63), 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) [2025-03-03 09:06:42,460 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 420 transitions. [2025-03-03 09:06:42,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2025-03-03 09:06:42,461 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:06:42,461 INFO L218 NwaCegarLoop]: trace histogram [46, 30, 30, 30, 30, 30, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:06:42,468 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2025-03-03 09:06:42,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-03-03 09:06:42,666 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:06:42,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:06:42,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1096672262, now seen corresponding path program 3 times [2025-03-03 09:06:42,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:06:42,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348012046] [2025-03-03 09:06:42,667 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-03 09:06:42,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:06:42,695 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 234 statements into 31 equivalence classes. [2025-03-03 09:06:42,707 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 24 of 234 statements. [2025-03-03 09:06:42,707 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-03 09:06:42,707 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:06:42,860 INFO L134 CoverageAnalysis]: Checked inductivity of 3751 backedges. 88 proven. 117 refuted. 0 times theorem prover too weak. 3546 trivial. 0 not checked. [2025-03-03 09:06:42,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:06:42,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348012046] [2025-03-03 09:06:42,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348012046] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 09:06:42,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1599981800] [2025-03-03 09:06:42,861 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-03 09:06:42,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:06:42,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:06:42,863 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 09:06:42,864 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-03 09:06:42,991 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 234 statements into 31 equivalence classes. [2025-03-03 09:06:43,004 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 24 of 234 statements. [2025-03-03 09:06:43,004 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-03 09:06:43,004 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:06:43,005 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 15 conjuncts are in the unsatisfiable core [2025-03-03 09:06:43,008 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 09:06:43,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-03-03 09:06:43,181 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-03 09:06:43,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 15 [2025-03-03 09:06:43,214 INFO L134 CoverageAnalysis]: Checked inductivity of 3751 backedges. 134 proven. 88 refuted. 0 times theorem prover too weak. 3529 trivial. 0 not checked. [2025-03-03 09:06:43,214 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 09:06:43,375 INFO L134 CoverageAnalysis]: Checked inductivity of 3751 backedges. 88 proven. 88 refuted. 0 times theorem prover too weak. 3575 trivial. 0 not checked. [2025-03-03 09:06:43,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1599981800] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 09:06:43,376 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 09:06:43,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 17 [2025-03-03 09:06:43,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206334948] [2025-03-03 09:06:43,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 09:06:43,376 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-03 09:06:43,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:06:43,376 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-03 09:06:43,377 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2025-03-03 09:06:43,377 INFO L87 Difference]: Start difference. First operand 327 states and 420 transitions. Second operand has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 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) [2025-03-03 09:06:47,385 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-03 09:06:51,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-03 09:06:51,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:06:51,945 INFO L93 Difference]: Finished difference Result 716 states and 899 transitions. [2025-03-03 09:06:51,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-03 09:06:51,945 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 234 [2025-03-03 09:06:51,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:06:51,948 INFO L225 Difference]: With dead ends: 716 [2025-03-03 09:06:51,948 INFO L226 Difference]: Without dead ends: 711 [2025-03-03 09:06:51,949 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 486 GetRequests, 458 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=180, Invalid=470, Unknown=0, NotChecked=0, Total=650 [2025-03-03 09:06:51,949 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 46 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 15 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2025-03-03 09:06:51,950 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 91 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 130 Invalid, 3 Unknown, 0 Unchecked, 8.4s Time] [2025-03-03 09:06:51,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2025-03-03 09:06:51,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 424. [2025-03-03 09:06:51,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 423 states have (on average 1.3002364066193854) internal successors, (550), 423 states have internal predecessors, (550), 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) [2025-03-03 09:06:51,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 550 transitions. [2025-03-03 09:06:51,972 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 550 transitions. Word has length 234 [2025-03-03 09:06:51,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:06:51,972 INFO L471 AbstractCegarLoop]: Abstraction has 424 states and 550 transitions. [2025-03-03 09:06:51,972 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.1176470588235294) internal successors, (36), 17 states have internal predecessors, (36), 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) [2025-03-03 09:06:51,972 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 550 transitions. [2025-03-03 09:06:51,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2025-03-03 09:06:51,974 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:06:51,974 INFO L218 NwaCegarLoop]: trace histogram [46, 30, 30, 30, 30, 30, 28, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:06:51,980 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-03 09:06:52,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:06:52,178 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:06:52,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:06:52,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1068043111, now seen corresponding path program 4 times [2025-03-03 09:06:52,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:06:52,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929962058] [2025-03-03 09:06:52,179 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-03 09:06:52,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:06:52,211 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 234 statements into 2 equivalence classes. [2025-03-03 09:06:52,259 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 234 of 234 statements. [2025-03-03 09:06:52,259 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-03 09:06:52,259 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:06:53,445 INFO L134 CoverageAnalysis]: Checked inductivity of 3751 backedges. 0 proven. 1335 refuted. 0 times theorem prover too weak. 2416 trivial. 0 not checked. [2025-03-03 09:06:53,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:06:53,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929962058] [2025-03-03 09:06:53,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929962058] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 09:06:53,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224814784] [2025-03-03 09:06:53,445 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-03 09:06:53,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:06:53,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:06:53,452 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 09:06:53,452 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-03 09:06:53,586 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 234 statements into 2 equivalence classes. [2025-03-03 09:06:56,017 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 234 of 234 statements. [2025-03-03 09:06:56,017 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-03 09:06:56,018 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:06:56,024 INFO L256 TraceCheckSpWp]: Trace formula consists of 1158 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-03-03 09:06:56,026 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 09:06:56,156 INFO L134 CoverageAnalysis]: Checked inductivity of 3751 backedges. 0 proven. 1335 refuted. 0 times theorem prover too weak. 2416 trivial. 0 not checked. [2025-03-03 09:06:56,156 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 09:06:57,137 INFO L134 CoverageAnalysis]: Checked inductivity of 3751 backedges. 0 proven. 1335 refuted. 0 times theorem prover too weak. 2416 trivial. 0 not checked. [2025-03-03 09:06:57,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224814784] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 09:06:57,137 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 09:06:57,137 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 64 [2025-03-03 09:06:57,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394065848] [2025-03-03 09:06:57,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 09:06:57,138 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2025-03-03 09:06:57,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:06:57,139 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2025-03-03 09:06:57,140 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2025-03-03 09:06:57,140 INFO L87 Difference]: Start difference. First operand 424 states and 550 transitions. Second operand has 64 states, 64 states have (on average 3.078125) internal successors, (197), 64 states have internal predecessors, (197), 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) [2025-03-03 09:06:57,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:06:57,890 INFO L93 Difference]: Finished difference Result 1193 states and 1701 transitions. [2025-03-03 09:06:57,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2025-03-03 09:06:57,890 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 3.078125) internal successors, (197), 64 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 234 [2025-03-03 09:06:57,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:06:57,894 INFO L225 Difference]: With dead ends: 1193 [2025-03-03 09:06:57,894 INFO L226 Difference]: Without dead ends: 1002 [2025-03-03 09:06:57,895 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 437 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2025-03-03 09:06:57,895 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 952 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 952 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2025-03-03 09:06:57,896 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [952 Valid, 165 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2025-03-03 09:06:57,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1002 states. [2025-03-03 09:06:57,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1002 to 808. [2025-03-03 09:06:57,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 808 states, 807 states have (on average 1.3159851301115242) internal successors, (1062), 807 states have internal predecessors, (1062), 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) [2025-03-03 09:06:57,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 808 states to 808 states and 1062 transitions. [2025-03-03 09:06:57,942 INFO L78 Accepts]: Start accepts. Automaton has 808 states and 1062 transitions. Word has length 234 [2025-03-03 09:06:57,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:06:57,943 INFO L471 AbstractCegarLoop]: Abstraction has 808 states and 1062 transitions. [2025-03-03 09:06:57,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 3.078125) internal successors, (197), 64 states have internal predecessors, (197), 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) [2025-03-03 09:06:57,943 INFO L276 IsEmpty]: Start isEmpty. Operand 808 states and 1062 transitions. [2025-03-03 09:06:57,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 427 [2025-03-03 09:06:57,946 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:06:57,946 INFO L218 NwaCegarLoop]: trace histogram [62, 62, 62, 62, 62, 60, 46, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:06:57,957 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2025-03-03 09:06:58,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2025-03-03 09:06:58,147 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:06:58,148 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:06:58,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1766536857, now seen corresponding path program 5 times [2025-03-03 09:06:58,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:06:58,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172388619] [2025-03-03 09:06:58,148 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-03 09:06:58,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:06:58,188 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 426 statements into 63 equivalence classes. [2025-03-03 09:07:00,649 INFO L111 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 63 check-sat command(s) and asserted 426 of 426 statements. [2025-03-03 09:07:00,650 INFO L114 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 issued 63 check-sat command(s) [2025-03-03 09:07:00,650 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:07:02,679 INFO L134 CoverageAnalysis]: Checked inductivity of 12551 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 11470 trivial. 0 not checked. [2025-03-03 09:07:02,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:07:02,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172388619] [2025-03-03 09:07:02,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172388619] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 09:07:02,679 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776522235] [2025-03-03 09:07:02,680 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2025-03-03 09:07:02,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:07:02,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:07:02,681 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 09:07:02,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2025-03-03 09:07:02,860 INFO L108 AnnotateAndAsserter]: Assert order INSIDE_LOOP_FIRST1 partitioned 426 statements into 63 equivalence classes.