./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-76.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/hardness-nfm22/hardness_operatoramount_amount500_file-76.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 8186639625ce393affc636d71862385ab5976ddbf9eeeac19c1ff9ee758a31c5 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-04 00:36:15,243 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-04 00:36:15,294 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-04 00:36:15,302 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-04 00:36:15,302 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-04 00:36:15,320 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-04 00:36:15,320 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-04 00:36:15,321 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-04 00:36:15,321 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-04 00:36:15,321 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-04 00:36:15,321 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-04 00:36:15,321 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-04 00:36:15,322 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-04 00:36:15,322 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-04 00:36:15,323 INFO L153 SettingsManager]: * Use SBE=true [2025-03-04 00:36:15,323 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-04 00:36:15,323 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-04 00:36:15,323 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-04 00:36:15,324 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-04 00:36:15,324 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-04 00:36:15,324 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-04 00:36:15,324 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-04 00:36:15,324 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-04 00:36:15,324 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-04 00:36:15,324 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-04 00:36:15,324 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-04 00:36:15,324 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-04 00:36:15,324 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-04 00:36:15,324 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-04 00:36:15,324 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-04 00:36:15,324 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-04 00:36:15,324 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-04 00:36:15,324 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 00:36:15,324 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-04 00:36:15,324 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-04 00:36:15,324 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-04 00:36:15,324 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-04 00:36:15,324 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-04 00:36:15,324 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-04 00:36:15,324 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-04 00:36:15,324 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-04 00:36:15,324 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-04 00:36:15,325 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-04 00:36:15,325 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 -> 8186639625ce393affc636d71862385ab5976ddbf9eeeac19c1ff9ee758a31c5 [2025-03-04 00:36:15,551 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-04 00:36:15,560 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-04 00:36:15,562 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-04 00:36:15,563 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-04 00:36:15,564 INFO L274 PluginConnector]: CDTParser initialized [2025-03-04 00:36:15,565 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-76.i [2025-03-04 00:36:16,716 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7cc4dfb8/d11a6d0365f64b78bcbb619e5c729c91/FLAG38465e330 [2025-03-04 00:36:17,027 INFO L384 CDTParser]: Found 1 translation units. [2025-03-04 00:36:17,027 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/hardness-nfm22/hardness_operatoramount_amount500_file-76.i [2025-03-04 00:36:17,038 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7cc4dfb8/d11a6d0365f64b78bcbb619e5c729c91/FLAG38465e330 [2025-03-04 00:36:17,292 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7cc4dfb8/d11a6d0365f64b78bcbb619e5c729c91 [2025-03-04 00:36:17,295 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-04 00:36:17,296 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-04 00:36:17,297 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-04 00:36:17,297 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-04 00:36:17,300 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-04 00:36:17,300 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 12:36:17" (1/1) ... [2025-03-04 00:36:17,301 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68852bea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 12:36:17, skipping insertion in model container [2025-03-04 00:36:17,301 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.03 12:36:17" (1/1) ... [2025-03-04 00:36:17,334 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-04 00:36:17,446 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/hardness-nfm22/hardness_operatoramount_amount500_file-76.i[916,929] [2025-03-04 00:36:17,658 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 00:36:17,674 INFO L200 MainTranslator]: Completed pre-run [2025-03-04 00:36:17,684 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/hardness-nfm22/hardness_operatoramount_amount500_file-76.i[916,929] [2025-03-04 00:36:17,793 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-04 00:36:17,813 INFO L204 MainTranslator]: Completed translation [2025-03-04 00:36:17,814 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 12:36:17 WrapperNode [2025-03-04 00:36:17,814 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-04 00:36:17,816 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-04 00:36:17,816 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-04 00:36:17,816 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-04 00:36:17,820 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 12:36:17" (1/1) ... [2025-03-04 00:36:17,844 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 12:36:17" (1/1) ... [2025-03-04 00:36:17,929 INFO L138 Inliner]: procedures = 26, calls = 108, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 811 [2025-03-04 00:36:17,930 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-04 00:36:17,930 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-04 00:36:17,931 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-04 00:36:17,931 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-04 00:36:17,938 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 12:36:17" (1/1) ... [2025-03-04 00:36:17,938 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 12:36:17" (1/1) ... [2025-03-04 00:36:17,954 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 12:36:17" (1/1) ... [2025-03-04 00:36:18,033 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-04 00:36:18,034 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 12:36:17" (1/1) ... [2025-03-04 00:36:18,034 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 12:36:17" (1/1) ... [2025-03-04 00:36:18,054 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 12:36:17" (1/1) ... [2025-03-04 00:36:18,058 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 12:36:17" (1/1) ... [2025-03-04 00:36:18,065 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 12:36:17" (1/1) ... [2025-03-04 00:36:18,071 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 12:36:17" (1/1) ... [2025-03-04 00:36:18,090 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-04 00:36:18,092 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-04 00:36:18,092 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-04 00:36:18,092 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-04 00:36:18,093 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 12:36:17" (1/1) ... [2025-03-04 00:36:18,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-04 00:36:18,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 00:36:18,120 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) [2025-03-04 00:36:18,122 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 [2025-03-04 00:36:18,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-04 00:36:18,139 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-04 00:36:18,139 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-04 00:36:18,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-04 00:36:18,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-04 00:36:18,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-04 00:36:18,263 INFO L256 CfgBuilder]: Building ICFG [2025-03-04 00:36:18,264 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-04 00:36:19,213 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L697: havoc property_#t~bitwise68#1;havoc property_#t~short69#1;havoc property_#t~bitwise70#1;havoc property_#t~short71#1;havoc property_#t~ite74#1;havoc property_#t~bitwise72#1;havoc property_#t~bitwise73#1;havoc property_#t~short75#1;havoc property_#t~bitwise76#1;havoc property_#t~ite78#1;havoc property_#t~bitwise77#1;havoc property_#t~short79#1; [2025-03-04 00:36:19,368 INFO L? ?]: Removed 73 outVars from TransFormulas that were not future-live. [2025-03-04 00:36:19,368 INFO L307 CfgBuilder]: Performing block encoding [2025-03-04 00:36:19,387 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-04 00:36:19,387 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-04 00:36:19,387 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 12:36:19 BoogieIcfgContainer [2025-03-04 00:36:19,387 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-04 00:36:19,389 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-04 00:36:19,390 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-04 00:36:19,396 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-04 00:36:19,396 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.03 12:36:17" (1/3) ... [2025-03-04 00:36:19,397 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c437990 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 12:36:19, skipping insertion in model container [2025-03-04 00:36:19,397 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.03 12:36:17" (2/3) ... [2025-03-04 00:36:19,397 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c437990 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.03 12:36:19, skipping insertion in model container [2025-03-04 00:36:19,397 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 04.03 12:36:19" (3/3) ... [2025-03-04 00:36:19,398 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount500_file-76.i [2025-03-04 00:36:19,409 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-04 00:36:19,412 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_operatoramount_amount500_file-76.i that has 2 procedures, 327 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-04 00:36:19,459 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-04 00:36:19,468 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;@24fcd7ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-04 00:36:19,469 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-04 00:36:19,475 INFO L276 IsEmpty]: Start isEmpty. Operand has 327 states, 229 states have (on average 1.51528384279476) internal successors, (347), 230 states have internal predecessors, (347), 95 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) [2025-03-04 00:36:19,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2025-03-04 00:36:19,505 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 00:36:19,506 INFO L218 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 00:36:19,506 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 00:36:19,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 00:36:19,512 INFO L85 PathProgramCache]: Analyzing trace with hash 2038127586, now seen corresponding path program 1 times [2025-03-04 00:36:19,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 00:36:19,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428832394] [2025-03-04 00:36:19,519 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 00:36:19,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 00:36:19,651 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 622 statements into 1 equivalence classes. [2025-03-04 00:36:19,704 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 622 of 622 statements. [2025-03-04 00:36:19,704 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 00:36:19,704 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 00:36:20,193 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 188 refuted. 0 times theorem prover too weak. 17672 trivial. 0 not checked. [2025-03-04 00:36:20,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 00:36:20,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428832394] [2025-03-04 00:36:20,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428832394] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 00:36:20,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296081601] [2025-03-04 00:36:20,196 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 00:36:20,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 00:36:20,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 00:36:20,199 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) [2025-03-04 00:36:20,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-04 00:36:20,410 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 622 statements into 1 equivalence classes. [2025-03-04 00:36:20,621 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 622 of 622 statements. [2025-03-04 00:36:20,621 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 00:36:20,621 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 00:36:20,629 INFO L256 TraceCheckSpWp]: Trace formula consists of 1468 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-04 00:36:20,649 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 00:36:20,748 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 188 proven. 0 refuted. 0 times theorem prover too weak. 17672 trivial. 0 not checked. [2025-03-04 00:36:20,748 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-04 00:36:20,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296081601] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 00:36:20,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-04 00:36:20,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-04 00:36:20,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238564150] [2025-03-04 00:36:20,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 00:36:20,755 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-04 00:36:20,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 00:36:20,771 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-04 00:36:20,772 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-04 00:36:20,775 INFO L87 Difference]: Start difference. First operand has 327 states, 229 states have (on average 1.51528384279476) internal successors, (347), 230 states have internal predecessors, (347), 95 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) Second operand has 2 states, 2 states have (on average 76.0) internal successors, (152), 2 states have internal predecessors, (152), 2 states have call successors, (95), 2 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 2 states have call successors, (95) [2025-03-04 00:36:20,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 00:36:20,849 INFO L93 Difference]: Finished difference Result 648 states and 1164 transitions. [2025-03-04 00:36:20,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-04 00:36:20,851 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 76.0) internal successors, (152), 2 states have internal predecessors, (152), 2 states have call successors, (95), 2 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 2 states have call successors, (95) Word has length 622 [2025-03-04 00:36:20,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 00:36:20,862 INFO L225 Difference]: With dead ends: 648 [2025-03-04 00:36:20,862 INFO L226 Difference]: Without dead ends: 324 [2025-03-04 00:36:20,869 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 623 GetRequests, 623 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-04 00:36:20,872 INFO L435 NwaCegarLoop]: 520 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-04 00:36:20,874 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 520 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-04 00:36:20,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2025-03-04 00:36:20,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 324. [2025-03-04 00:36:20,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 227 states have (on average 1.5066079295154184) internal successors, (342), 227 states have internal predecessors, (342), 95 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) [2025-03-04 00:36:20,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 532 transitions. [2025-03-04 00:36:20,942 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 532 transitions. Word has length 622 [2025-03-04 00:36:20,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 00:36:20,943 INFO L471 AbstractCegarLoop]: Abstraction has 324 states and 532 transitions. [2025-03-04 00:36:20,943 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 76.0) internal successors, (152), 2 states have internal predecessors, (152), 2 states have call successors, (95), 2 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 2 states have call successors, (95) [2025-03-04 00:36:20,944 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 532 transitions. [2025-03-04 00:36:20,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2025-03-04 00:36:20,953 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 00:36:20,954 INFO L218 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 00:36:20,964 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2025-03-04 00:36:21,161 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-04 00:36:21,162 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 00:36:21,162 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 00:36:21,163 INFO L85 PathProgramCache]: Analyzing trace with hash -123215711, now seen corresponding path program 1 times [2025-03-04 00:36:21,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 00:36:21,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030250700] [2025-03-04 00:36:21,163 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 00:36:21,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 00:36:21,227 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 622 statements into 1 equivalence classes. [2025-03-04 00:36:21,351 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 622 of 622 statements. [2025-03-04 00:36:21,352 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 00:36:21,352 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 00:36:21,924 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2025-03-04 00:36:21,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 00:36:21,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030250700] [2025-03-04 00:36:21,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030250700] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 00:36:21,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 00:36:21,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-04 00:36:21,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828357637] [2025-03-04 00:36:21,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 00:36:21,927 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-04 00:36:21,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 00:36:21,929 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-04 00:36:21,929 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-04 00:36:21,929 INFO L87 Difference]: Start difference. First operand 324 states and 532 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2025-03-04 00:36:22,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 00:36:22,086 INFO L93 Difference]: Finished difference Result 965 states and 1588 transitions. [2025-03-04 00:36:22,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-04 00:36:22,087 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) Word has length 622 [2025-03-04 00:36:22,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 00:36:22,096 INFO L225 Difference]: With dead ends: 965 [2025-03-04 00:36:22,098 INFO L226 Difference]: Without dead ends: 644 [2025-03-04 00:36:22,100 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 [2025-03-04 00:36:22,101 INFO L435 NwaCegarLoop]: 812 mSDtfsCounter, 517 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 1310 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 00:36:22,101 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [517 Valid, 1310 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 00:36:22,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2025-03-04 00:36:22,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 642. [2025-03-04 00:36:22,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 449 states have (on average 1.4966592427616927) internal successors, (672), 449 states have internal predecessors, (672), 190 states have call successors, (190), 2 states have call predecessors, (190), 2 states have return successors, (190), 190 states have call predecessors, (190), 190 states have call successors, (190) [2025-03-04 00:36:22,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 1052 transitions. [2025-03-04 00:36:22,206 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 1052 transitions. Word has length 622 [2025-03-04 00:36:22,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 00:36:22,208 INFO L471 AbstractCegarLoop]: Abstraction has 642 states and 1052 transitions. [2025-03-04 00:36:22,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2025-03-04 00:36:22,208 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 1052 transitions. [2025-03-04 00:36:22,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2025-03-04 00:36:22,216 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 00:36:22,216 INFO L218 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 00:36:22,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2025-03-04 00:36:22,217 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 00:36:22,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 00:36:22,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1289912030, now seen corresponding path program 1 times [2025-03-04 00:36:22,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 00:36:22,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586966720] [2025-03-04 00:36:22,218 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 00:36:22,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 00:36:22,273 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 622 statements into 1 equivalence classes. [2025-03-04 00:36:23,312 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 622 of 622 statements. [2025-03-04 00:36:23,312 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 00:36:23,313 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 00:36:24,299 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2025-03-04 00:36:24,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 00:36:24,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586966720] [2025-03-04 00:36:24,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586966720] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 00:36:24,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 00:36:24,299 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 00:36:24,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474396796] [2025-03-04 00:36:24,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 00:36:24,300 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 00:36:24,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 00:36:24,301 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 00:36:24,301 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-04 00:36:24,301 INFO L87 Difference]: Start difference. First operand 642 states and 1052 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2025-03-04 00:36:24,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 00:36:24,481 INFO L93 Difference]: Finished difference Result 1865 states and 3061 transitions. [2025-03-04 00:36:24,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 00:36:24,482 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) Word has length 622 [2025-03-04 00:36:24,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 00:36:24,493 INFO L225 Difference]: With dead ends: 1865 [2025-03-04 00:36:24,493 INFO L226 Difference]: Without dead ends: 1226 [2025-03-04 00:36:24,497 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2025-03-04 00:36:24,499 INFO L435 NwaCegarLoop]: 519 mSDtfsCounter, 701 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 1241 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-04 00:36:24,499 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [701 Valid, 1241 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-04 00:36:24,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1226 states. [2025-03-04 00:36:24,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1226 to 1025. [2025-03-04 00:36:24,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1025 states, 826 states have (on average 1.569007263922518) internal successors, (1296), 828 states have internal predecessors, (1296), 194 states have call successors, (194), 4 states have call predecessors, (194), 4 states have return successors, (194), 192 states have call predecessors, (194), 194 states have call successors, (194) [2025-03-04 00:36:24,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1025 states to 1025 states and 1684 transitions. [2025-03-04 00:36:24,633 INFO L78 Accepts]: Start accepts. Automaton has 1025 states and 1684 transitions. Word has length 622 [2025-03-04 00:36:24,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 00:36:24,636 INFO L471 AbstractCegarLoop]: Abstraction has 1025 states and 1684 transitions. [2025-03-04 00:36:24,636 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2025-03-04 00:36:24,636 INFO L276 IsEmpty]: Start isEmpty. Operand 1025 states and 1684 transitions. [2025-03-04 00:36:24,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2025-03-04 00:36:24,647 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 00:36:24,647 INFO L218 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 00:36:24,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-04 00:36:24,648 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 00:36:24,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 00:36:24,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1700661537, now seen corresponding path program 1 times [2025-03-04 00:36:24,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 00:36:24,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560355753] [2025-03-04 00:36:24,649 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 00:36:24,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 00:36:24,694 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 622 statements into 1 equivalence classes. [2025-03-04 00:36:25,792 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 622 of 622 statements. [2025-03-04 00:36:25,792 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 00:36:25,792 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 00:36:26,466 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 9 proven. 273 refuted. 0 times theorem prover too weak. 17578 trivial. 0 not checked. [2025-03-04 00:36:26,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 00:36:26,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560355753] [2025-03-04 00:36:26,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560355753] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 00:36:26,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686899674] [2025-03-04 00:36:26,468 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 00:36:26,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 00:36:26,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 00:36:26,470 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) [2025-03-04 00:36:26,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-04 00:36:26,659 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 622 statements into 1 equivalence classes. [2025-03-04 00:36:26,845 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 622 of 622 statements. [2025-03-04 00:36:26,846 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 00:36:26,846 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 00:36:26,857 INFO L256 TraceCheckSpWp]: Trace formula consists of 1464 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-04 00:36:26,867 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 00:36:28,134 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 11094 proven. 330 refuted. 0 times theorem prover too weak. 6436 trivial. 0 not checked. [2025-03-04 00:36:28,134 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 00:36:28,951 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 228 proven. 333 refuted. 0 times theorem prover too weak. 17299 trivial. 0 not checked. [2025-03-04 00:36:28,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686899674] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 00:36:28,952 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 00:36:28,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8, 10] total 17 [2025-03-04 00:36:28,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262741711] [2025-03-04 00:36:28,952 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 00:36:28,954 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2025-03-04 00:36:28,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 00:36:28,957 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2025-03-04 00:36:28,957 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2025-03-04 00:36:28,958 INFO L87 Difference]: Start difference. First operand 1025 states and 1684 transitions. Second operand has 17 states, 17 states have (on average 17.235294117647058) internal successors, (293), 17 states have internal predecessors, (293), 6 states have call successors, (264), 3 states have call predecessors, (264), 7 states have return successors, (266), 6 states have call predecessors, (266), 6 states have call successors, (266) [2025-03-04 00:36:30,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 00:36:30,303 INFO L93 Difference]: Finished difference Result 1700 states and 2763 transitions. [2025-03-04 00:36:30,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-03-04 00:36:30,304 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 17.235294117647058) internal successors, (293), 17 states have internal predecessors, (293), 6 states have call successors, (264), 3 states have call predecessors, (264), 7 states have return successors, (266), 6 states have call predecessors, (266), 6 states have call successors, (266) Word has length 622 [2025-03-04 00:36:30,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 00:36:30,309 INFO L225 Difference]: With dead ends: 1700 [2025-03-04 00:36:30,309 INFO L226 Difference]: Without dead ends: 678 [2025-03-04 00:36:30,312 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1264 GetRequests, 1234 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=277, Invalid=715, Unknown=0, NotChecked=0, Total=992 [2025-03-04 00:36:30,313 INFO L435 NwaCegarLoop]: 389 mSDtfsCounter, 865 mSDsluCounter, 1793 mSDsCounter, 0 mSdLazyCounter, 1647 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 2182 SdHoareTripleChecker+Invalid, 1872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 1647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2025-03-04 00:36:30,314 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 2182 Invalid, 1872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 1647 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2025-03-04 00:36:30,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 678 states. [2025-03-04 00:36:30,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 678 to 666. [2025-03-04 00:36:30,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 666 states, 467 states have (on average 1.4475374732334048) internal successors, (676), 467 states have internal predecessors, (676), 190 states have call successors, (190), 8 states have call predecessors, (190), 8 states have return successors, (190), 190 states have call predecessors, (190), 190 states have call successors, (190) [2025-03-04 00:36:30,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 1056 transitions. [2025-03-04 00:36:30,383 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 1056 transitions. Word has length 622 [2025-03-04 00:36:30,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 00:36:30,384 INFO L471 AbstractCegarLoop]: Abstraction has 666 states and 1056 transitions. [2025-03-04 00:36:30,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 17.235294117647058) internal successors, (293), 17 states have internal predecessors, (293), 6 states have call successors, (264), 3 states have call predecessors, (264), 7 states have return successors, (266), 6 states have call predecessors, (266), 6 states have call successors, (266) [2025-03-04 00:36:30,386 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 1056 transitions. [2025-03-04 00:36:30,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 625 [2025-03-04 00:36:30,398 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 00:36:30,399 INFO L218 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 00:36:30,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-04 00:36:30,599 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 [2025-03-04 00:36:30,600 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 00:36:30,600 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 00:36:30,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1857605012, now seen corresponding path program 1 times [2025-03-04 00:36:30,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 00:36:30,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182068337] [2025-03-04 00:36:30,601 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 00:36:30,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 00:36:30,634 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 624 statements into 1 equivalence classes. [2025-03-04 00:36:31,470 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 624 of 624 statements. [2025-03-04 00:36:31,470 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 00:36:31,470 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 00:36:32,051 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 165 proven. 117 refuted. 0 times theorem prover too weak. 17578 trivial. 0 not checked. [2025-03-04 00:36:32,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 00:36:32,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182068337] [2025-03-04 00:36:32,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182068337] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 00:36:32,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265405939] [2025-03-04 00:36:32,052 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 00:36:32,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 00:36:32,053 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 00:36:32,054 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) [2025-03-04 00:36:32,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-04 00:36:32,225 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 624 statements into 1 equivalence classes. [2025-03-04 00:36:32,367 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 624 of 624 statements. [2025-03-04 00:36:32,367 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 00:36:32,367 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 00:36:32,376 INFO L256 TraceCheckSpWp]: Trace formula consists of 1465 conjuncts, 8 conjuncts are in the unsatisfiable core [2025-03-04 00:36:32,393 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 00:36:32,904 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 6562 proven. 60 refuted. 0 times theorem prover too weak. 11238 trivial. 0 not checked. [2025-03-04 00:36:32,904 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 00:36:33,355 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 222 proven. 60 refuted. 0 times theorem prover too weak. 17578 trivial. 0 not checked. [2025-03-04 00:36:33,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265405939] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 00:36:33,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 00:36:33,357 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 7] total 14 [2025-03-04 00:36:33,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836037130] [2025-03-04 00:36:33,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 00:36:33,360 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2025-03-04 00:36:33,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 00:36:33,361 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2025-03-04 00:36:33,361 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2025-03-04 00:36:33,361 INFO L87 Difference]: Start difference. First operand 666 states and 1056 transitions. Second operand has 14 states, 14 states have (on average 24.928571428571427) internal successors, (349), 14 states have internal predecessors, (349), 7 states have call successors, (154), 3 states have call predecessors, (154), 5 states have return successors, (156), 7 states have call predecessors, (156), 7 states have call successors, (156) [2025-03-04 00:36:34,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 00:36:34,504 INFO L93 Difference]: Finished difference Result 1369 states and 2143 transitions. [2025-03-04 00:36:34,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2025-03-04 00:36:34,505 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 24.928571428571427) internal successors, (349), 14 states have internal predecessors, (349), 7 states have call successors, (154), 3 states have call predecessors, (154), 5 states have return successors, (156), 7 states have call predecessors, (156), 7 states have call successors, (156) Word has length 624 [2025-03-04 00:36:34,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 00:36:34,513 INFO L225 Difference]: With dead ends: 1369 [2025-03-04 00:36:34,513 INFO L226 Difference]: Without dead ends: 706 [2025-03-04 00:36:34,517 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1267 GetRequests, 1242 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=197, Invalid=505, Unknown=0, NotChecked=0, Total=702 [2025-03-04 00:36:34,517 INFO L435 NwaCegarLoop]: 374 mSDtfsCounter, 1827 mSDsluCounter, 1137 mSDsCounter, 0 mSdLazyCounter, 1111 mSolverCounterSat, 1092 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1829 SdHoareTripleChecker+Valid, 1511 SdHoareTripleChecker+Invalid, 2203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1092 IncrementalHoareTripleChecker+Valid, 1111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-04 00:36:34,518 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1829 Valid, 1511 Invalid, 2203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1092 Valid, 1111 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-04 00:36:34,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2025-03-04 00:36:34,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 690. [2025-03-04 00:36:34,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 485 states have (on average 1.4061855670103092) internal successors, (682), 485 states have internal predecessors, (682), 190 states have call successors, (190), 14 states have call predecessors, (190), 14 states have return successors, (190), 190 states have call predecessors, (190), 190 states have call successors, (190) [2025-03-04 00:36:34,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1062 transitions. [2025-03-04 00:36:34,565 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1062 transitions. Word has length 624 [2025-03-04 00:36:34,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 00:36:34,566 INFO L471 AbstractCegarLoop]: Abstraction has 690 states and 1062 transitions. [2025-03-04 00:36:34,567 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 24.928571428571427) internal successors, (349), 14 states have internal predecessors, (349), 7 states have call successors, (154), 3 states have call predecessors, (154), 5 states have return successors, (156), 7 states have call predecessors, (156), 7 states have call successors, (156) [2025-03-04 00:36:34,567 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1062 transitions. [2025-03-04 00:36:34,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 627 [2025-03-04 00:36:34,571 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 00:36:34,572 INFO L218 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 00:36:34,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-04 00:36:34,776 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 [2025-03-04 00:36:34,776 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 00:36:34,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 00:36:34,777 INFO L85 PathProgramCache]: Analyzing trace with hash -711231797, now seen corresponding path program 1 times [2025-03-04 00:36:34,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 00:36:34,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775391644] [2025-03-04 00:36:34,777 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 00:36:34,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 00:36:34,814 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 626 statements into 1 equivalence classes. [2025-03-04 00:36:34,985 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 626 of 626 statements. [2025-03-04 00:36:34,985 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 00:36:34,985 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 00:36:35,296 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2025-03-04 00:36:35,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 00:36:35,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775391644] [2025-03-04 00:36:35,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775391644] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-04 00:36:35,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-04 00:36:35,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-04 00:36:35,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918493582] [2025-03-04 00:36:35,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-04 00:36:35,297 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-04 00:36:35,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 00:36:35,298 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-04 00:36:35,298 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-04 00:36:35,299 INFO L87 Difference]: Start difference. First operand 690 states and 1062 transitions. Second operand has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2025-03-04 00:36:35,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 00:36:35,606 INFO L93 Difference]: Finished difference Result 1379 states and 2125 transitions. [2025-03-04 00:36:35,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-04 00:36:35,607 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) Word has length 626 [2025-03-04 00:36:35,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 00:36:35,612 INFO L225 Difference]: With dead ends: 1379 [2025-03-04 00:36:35,613 INFO L226 Difference]: Without dead ends: 692 [2025-03-04 00:36:35,615 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2025-03-04 00:36:35,616 INFO L435 NwaCegarLoop]: 503 mSDtfsCounter, 329 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-04 00:36:35,616 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 811 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-04 00:36:35,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2025-03-04 00:36:35,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 692. [2025-03-04 00:36:35,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 487 states have (on average 1.404517453798768) internal successors, (684), 487 states have internal predecessors, (684), 190 states have call successors, (190), 14 states have call predecessors, (190), 14 states have return successors, (190), 190 states have call predecessors, (190), 190 states have call successors, (190) [2025-03-04 00:36:35,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1064 transitions. [2025-03-04 00:36:35,666 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1064 transitions. Word has length 626 [2025-03-04 00:36:35,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 00:36:35,668 INFO L471 AbstractCegarLoop]: Abstraction has 692 states and 1064 transitions. [2025-03-04 00:36:35,668 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.5) internal successors, (154), 4 states have internal predecessors, (154), 1 states have call successors, (95), 1 states have call predecessors, (95), 1 states have return successors, (95), 1 states have call predecessors, (95), 1 states have call successors, (95) [2025-03-04 00:36:35,668 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1064 transitions. [2025-03-04 00:36:35,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 628 [2025-03-04 00:36:35,672 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 00:36:35,672 INFO L218 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 00:36:35,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2025-03-04 00:36:35,672 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 00:36:35,673 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 00:36:35,673 INFO L85 PathProgramCache]: Analyzing trace with hash -309632950, now seen corresponding path program 1 times [2025-03-04 00:36:35,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 00:36:35,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070752638] [2025-03-04 00:36:35,673 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 00:36:35,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 00:36:35,706 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 627 statements into 1 equivalence classes. [2025-03-04 00:36:37,521 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 627 of 627 statements. [2025-03-04 00:36:37,522 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 00:36:37,522 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 00:36:37,935 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 3 proven. 279 refuted. 0 times theorem prover too weak. 17578 trivial. 0 not checked. [2025-03-04 00:36:37,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 00:36:37,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070752638] [2025-03-04 00:36:37,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070752638] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 00:36:37,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901610117] [2025-03-04 00:36:37,936 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 00:36:37,936 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 00:36:37,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 00:36:37,938 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) [2025-03-04 00:36:37,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-04 00:36:38,111 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 627 statements into 1 equivalence classes. [2025-03-04 00:36:38,255 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 627 of 627 statements. [2025-03-04 00:36:38,255 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 00:36:38,256 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 00:36:38,263 INFO L256 TraceCheckSpWp]: Trace formula consists of 1465 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-04 00:36:38,274 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 00:36:39,003 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 468 proven. 279 refuted. 0 times theorem prover too weak. 17113 trivial. 0 not checked. [2025-03-04 00:36:39,004 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 00:36:39,651 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 3 proven. 279 refuted. 0 times theorem prover too weak. 17578 trivial. 0 not checked. [2025-03-04 00:36:39,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901610117] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 00:36:39,652 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 00:36:39,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2025-03-04 00:36:39,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243192818] [2025-03-04 00:36:39,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 00:36:39,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-04 00:36:39,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 00:36:39,654 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-04 00:36:39,655 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2025-03-04 00:36:39,655 INFO L87 Difference]: Start difference. First operand 692 states and 1064 transitions. Second operand has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 2 states have call successors, (188), 2 states have call predecessors, (188), 4 states have return successors, (189), 2 states have call predecessors, (189), 2 states have call successors, (189) [2025-03-04 00:36:40,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 00:36:40,101 INFO L93 Difference]: Finished difference Result 1407 states and 2147 transitions. [2025-03-04 00:36:40,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2025-03-04 00:36:40,102 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 2 states have call successors, (188), 2 states have call predecessors, (188), 4 states have return successors, (189), 2 states have call predecessors, (189), 2 states have call successors, (189) Word has length 627 [2025-03-04 00:36:40,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 00:36:40,109 INFO L225 Difference]: With dead ends: 1407 [2025-03-04 00:36:40,110 INFO L226 Difference]: Without dead ends: 718 [2025-03-04 00:36:40,113 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1261 GetRequests, 1251 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2025-03-04 00:36:40,113 INFO L435 NwaCegarLoop]: 394 mSDtfsCounter, 225 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-04 00:36:40,114 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 990 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-04 00:36:40,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2025-03-04 00:36:40,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 698. [2025-03-04 00:36:40,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 491 states have (on average 1.3788187372708758) internal successors, (677), 491 states have internal predecessors, (677), 190 states have call successors, (190), 16 states have call predecessors, (190), 16 states have return successors, (190), 190 states have call predecessors, (190), 190 states have call successors, (190) [2025-03-04 00:36:40,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 1057 transitions. [2025-03-04 00:36:40,167 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 1057 transitions. Word has length 627 [2025-03-04 00:36:40,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 00:36:40,168 INFO L471 AbstractCegarLoop]: Abstraction has 698 states and 1057 transitions. [2025-03-04 00:36:40,168 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 23.428571428571427) internal successors, (164), 7 states have internal predecessors, (164), 2 states have call successors, (188), 2 states have call predecessors, (188), 4 states have return successors, (189), 2 states have call predecessors, (189), 2 states have call successors, (189) [2025-03-04 00:36:40,168 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 1057 transitions. [2025-03-04 00:36:40,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 628 [2025-03-04 00:36:40,171 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 00:36:40,171 INFO L218 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 00:36:40,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-04 00:36:40,375 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 00:36:40,375 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 00:36:40,376 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 00:36:40,376 INFO L85 PathProgramCache]: Analyzing trace with hash 2059801035, now seen corresponding path program 1 times [2025-03-04 00:36:40,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 00:36:40,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309018986] [2025-03-04 00:36:40,376 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 00:36:40,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 00:36:40,410 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 627 statements into 1 equivalence classes. [2025-03-04 00:36:41,083 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 627 of 627 statements. [2025-03-04 00:36:41,084 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 00:36:41,084 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 00:36:41,855 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 222 proven. 60 refuted. 0 times theorem prover too weak. 17578 trivial. 0 not checked. [2025-03-04 00:36:41,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 00:36:41,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309018986] [2025-03-04 00:36:41,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309018986] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 00:36:41,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50097436] [2025-03-04 00:36:41,856 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 00:36:41,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 00:36:41,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 00:36:41,858 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) [2025-03-04 00:36:41,860 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-04 00:36:42,104 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 627 statements into 1 equivalence classes. [2025-03-04 00:36:42,342 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 627 of 627 statements. [2025-03-04 00:36:42,343 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 00:36:42,343 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 00:36:42,350 INFO L256 TraceCheckSpWp]: Trace formula consists of 1466 conjuncts, 13 conjuncts are in the unsatisfiable core [2025-03-04 00:36:42,362 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 00:36:44,427 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 11664 proven. 336 refuted. 0 times theorem prover too weak. 5860 trivial. 0 not checked. [2025-03-04 00:36:44,427 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 00:36:45,054 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 222 proven. 339 refuted. 0 times theorem prover too weak. 17299 trivial. 0 not checked. [2025-03-04 00:36:45,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50097436] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 00:36:45,054 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 00:36:45,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 23 [2025-03-04 00:36:45,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954780012] [2025-03-04 00:36:45,055 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 00:36:45,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2025-03-04 00:36:45,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 00:36:45,057 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2025-03-04 00:36:45,057 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506 [2025-03-04 00:36:45,058 INFO L87 Difference]: Start difference. First operand 698 states and 1057 transitions. Second operand has 23 states, 22 states have (on average 18.227272727272727) internal successors, (401), 23 states have internal predecessors, (401), 9 states have call successors, (267), 4 states have call predecessors, (267), 9 states have return successors, (267), 9 states have call predecessors, (267), 9 states have call successors, (267) [2025-03-04 00:36:47,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 00:36:47,200 INFO L93 Difference]: Finished difference Result 2168 states and 3239 transitions. [2025-03-04 00:36:47,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2025-03-04 00:36:47,201 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 18.227272727272727) internal successors, (401), 23 states have internal predecessors, (401), 9 states have call successors, (267), 4 states have call predecessors, (267), 9 states have return successors, (267), 9 states have call predecessors, (267), 9 states have call successors, (267) Word has length 627 [2025-03-04 00:36:47,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 00:36:47,209 INFO L225 Difference]: With dead ends: 2168 [2025-03-04 00:36:47,209 INFO L226 Difference]: Without dead ends: 1473 [2025-03-04 00:36:47,211 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1293 GetRequests, 1245 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=630, Invalid=1820, Unknown=0, NotChecked=0, Total=2450 [2025-03-04 00:36:47,212 INFO L435 NwaCegarLoop]: 356 mSDtfsCounter, 3395 mSDsluCounter, 2238 mSDsCounter, 0 mSdLazyCounter, 2149 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3413 SdHoareTripleChecker+Valid, 2594 SdHoareTripleChecker+Invalid, 2920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 2149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2025-03-04 00:36:47,212 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3413 Valid, 2594 Invalid, 2920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [771 Valid, 2149 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2025-03-04 00:36:47,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1473 states. [2025-03-04 00:36:47,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1473 to 1417. [2025-03-04 00:36:47,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1417 states, 996 states have (on average 1.359437751004016) internal successors, (1354), 996 states have internal predecessors, (1354), 380 states have call successors, (380), 40 states have call predecessors, (380), 40 states have return successors, (380), 380 states have call predecessors, (380), 380 states have call successors, (380) [2025-03-04 00:36:47,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1417 states to 1417 states and 2114 transitions. [2025-03-04 00:36:47,346 INFO L78 Accepts]: Start accepts. Automaton has 1417 states and 2114 transitions. Word has length 627 [2025-03-04 00:36:47,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 00:36:47,347 INFO L471 AbstractCegarLoop]: Abstraction has 1417 states and 2114 transitions. [2025-03-04 00:36:47,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 18.227272727272727) internal successors, (401), 23 states have internal predecessors, (401), 9 states have call successors, (267), 4 states have call predecessors, (267), 9 states have return successors, (267), 9 states have call predecessors, (267), 9 states have call successors, (267) [2025-03-04 00:36:47,348 INFO L276 IsEmpty]: Start isEmpty. Operand 1417 states and 2114 transitions. [2025-03-04 00:36:47,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 628 [2025-03-04 00:36:47,351 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 00:36:47,351 INFO L218 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 00:36:47,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-04 00:36:47,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 00:36:47,552 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 00:36:47,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 00:36:47,553 INFO L85 PathProgramCache]: Analyzing trace with hash 266863373, now seen corresponding path program 1 times [2025-03-04 00:36:47,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 00:36:47,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951427299] [2025-03-04 00:36:47,553 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 00:36:47,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 00:36:47,584 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 627 statements into 1 equivalence classes. [2025-03-04 00:36:48,356 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 627 of 627 statements. [2025-03-04 00:36:48,357 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 00:36:48,357 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 00:36:49,193 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 165 proven. 117 refuted. 0 times theorem prover too weak. 17578 trivial. 0 not checked. [2025-03-04 00:36:49,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 00:36:49,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951427299] [2025-03-04 00:36:49,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951427299] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 00:36:49,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288600229] [2025-03-04 00:36:49,194 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 00:36:49,194 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 00:36:49,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 00:36:49,196 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) [2025-03-04 00:36:49,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-04 00:36:49,400 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 627 statements into 1 equivalence classes. [2025-03-04 00:36:49,627 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 627 of 627 statements. [2025-03-04 00:36:49,627 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 00:36:49,627 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 00:36:49,635 INFO L256 TraceCheckSpWp]: Trace formula consists of 1468 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-03-04 00:36:49,645 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 00:36:51,957 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 11708 proven. 444 refuted. 0 times theorem prover too weak. 5708 trivial. 0 not checked. [2025-03-04 00:36:51,957 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 00:36:52,596 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 330 proven. 231 refuted. 0 times theorem prover too weak. 17299 trivial. 0 not checked. [2025-03-04 00:36:52,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288600229] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 00:36:52,597 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 00:36:52,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 9] total 25 [2025-03-04 00:36:52,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540407538] [2025-03-04 00:36:52,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 00:36:52,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-03-04 00:36:52,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 00:36:52,599 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-03-04 00:36:52,600 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=466, Unknown=0, NotChecked=0, Total=600 [2025-03-04 00:36:52,600 INFO L87 Difference]: Start difference. First operand 1417 states and 2114 transitions. Second operand has 25 states, 24 states have (on average 15.166666666666666) internal successors, (364), 23 states have internal predecessors, (364), 11 states have call successors, (267), 5 states have call predecessors, (267), 10 states have return successors, (267), 11 states have call predecessors, (267), 11 states have call successors, (267) [2025-03-04 00:36:54,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-04 00:36:54,049 INFO L93 Difference]: Finished difference Result 2895 states and 4285 transitions. [2025-03-04 00:36:54,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2025-03-04 00:36:54,050 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 15.166666666666666) internal successors, (364), 23 states have internal predecessors, (364), 11 states have call successors, (267), 5 states have call predecessors, (267), 10 states have return successors, (267), 11 states have call predecessors, (267), 11 states have call successors, (267) Word has length 627 [2025-03-04 00:36:54,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-04 00:36:54,058 INFO L225 Difference]: With dead ends: 2895 [2025-03-04 00:36:54,058 INFO L226 Difference]: Without dead ends: 1481 [2025-03-04 00:36:54,062 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1284 GetRequests, 1242 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 402 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=518, Invalid=1374, Unknown=0, NotChecked=0, Total=1892 [2025-03-04 00:36:54,063 INFO L435 NwaCegarLoop]: 379 mSDtfsCounter, 1895 mSDsluCounter, 1434 mSDsCounter, 0 mSdLazyCounter, 1324 mSolverCounterSat, 875 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1895 SdHoareTripleChecker+Valid, 1813 SdHoareTripleChecker+Invalid, 2199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 875 IncrementalHoareTripleChecker+Valid, 1324 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-04 00:36:54,063 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1895 Valid, 1813 Invalid, 2199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [875 Valid, 1324 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-04 00:36:54,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1481 states. [2025-03-04 00:36:54,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1481 to 1433. [2025-03-04 00:36:54,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1433 states, 1008 states have (on average 1.3472222222222223) internal successors, (1358), 1008 states have internal predecessors, (1358), 380 states have call successors, (380), 44 states have call predecessors, (380), 44 states have return successors, (380), 380 states have call predecessors, (380), 380 states have call successors, (380) [2025-03-04 00:36:54,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1433 states to 1433 states and 2118 transitions. [2025-03-04 00:36:54,182 INFO L78 Accepts]: Start accepts. Automaton has 1433 states and 2118 transitions. Word has length 627 [2025-03-04 00:36:54,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-04 00:36:54,182 INFO L471 AbstractCegarLoop]: Abstraction has 1433 states and 2118 transitions. [2025-03-04 00:36:54,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 15.166666666666666) internal successors, (364), 23 states have internal predecessors, (364), 11 states have call successors, (267), 5 states have call predecessors, (267), 10 states have return successors, (267), 11 states have call predecessors, (267), 11 states have call successors, (267) [2025-03-04 00:36:54,183 INFO L276 IsEmpty]: Start isEmpty. Operand 1433 states and 2118 transitions. [2025-03-04 00:36:54,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2025-03-04 00:36:54,186 INFO L210 NwaCegarLoop]: Found error trace [2025-03-04 00:36:54,186 INFO L218 NwaCegarLoop]: trace histogram [95, 95, 95, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-04 00:36:54,196 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-04 00:36:54,387 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 00:36:54,387 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-04 00:36:54,387 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-04 00:36:54,388 INFO L85 PathProgramCache]: Analyzing trace with hash 310034859, now seen corresponding path program 1 times [2025-03-04 00:36:54,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-04 00:36:54,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049547629] [2025-03-04 00:36:54,388 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 00:36:54,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-04 00:36:54,431 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 628 statements into 1 equivalence classes. [2025-03-04 00:36:55,868 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 628 of 628 statements. [2025-03-04 00:36:55,868 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 00:36:55,868 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 00:37:05,962 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 186 proven. 372 refuted. 0 times theorem prover too weak. 17302 trivial. 0 not checked. [2025-03-04 00:37:05,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-04 00:37:05,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049547629] [2025-03-04 00:37:05,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049547629] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-04 00:37:05,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201451369] [2025-03-04 00:37:05,963 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-04 00:37:05,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-04 00:37:05,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-04 00:37:05,965 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) [2025-03-04 00:37:05,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-04 00:37:06,168 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 628 statements into 1 equivalence classes. [2025-03-04 00:37:06,415 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 628 of 628 statements. [2025-03-04 00:37:06,415 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-04 00:37:06,415 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-04 00:37:06,422 INFO L256 TraceCheckSpWp]: Trace formula consists of 1467 conjuncts, 26 conjuncts are in the unsatisfiable core [2025-03-04 00:37:06,430 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-04 00:37:09,097 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 11525 proven. 435 refuted. 0 times theorem prover too weak. 5900 trivial. 0 not checked. [2025-03-04 00:37:09,097 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-04 00:37:11,329 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 177 proven. 384 refuted. 0 times theorem prover too weak. 17299 trivial. 0 not checked. [2025-03-04 00:37:11,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [201451369] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-04 00:37:11,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-04 00:37:11,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 13] total 37 [2025-03-04 00:37:11,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055655497] [2025-03-04 00:37:11,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-04 00:37:11,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2025-03-04 00:37:11,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-04 00:37:11,332 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2025-03-04 00:37:11,333 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=1135, Unknown=0, NotChecked=0, Total=1332 [2025-03-04 00:37:11,333 INFO L87 Difference]: Start difference. First operand 1433 states and 2118 transitions. Second operand has 37 states, 37 states have (on average 11.45945945945946) internal successors, (424), 37 states have internal predecessors, (424), 10 states have call successors, (285), 5 states have call predecessors, (285), 11 states have return successors, (285), 10 states have call predecessors, (285), 10 states have call successors, (285)