./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/standard_running-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-examples/standard_running-1.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 7b8d5eeb19c9858fcb0b2998e8b2a6094462b42b704d3f987f7fa52a623cb169 --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 09:06:26,050 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 09:06:26,093 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 09:06:26,097 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 09:06:26,099 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 09:06:26,120 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 09:06:26,121 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 09:06:26,121 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 09:06:26,124 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 09:06:26,124 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 09:06:26,124 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 09:06:26,125 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 09:06:26,125 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 09:06:26,125 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 09:06:26,126 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 09:06:26,126 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 09:06:26,126 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 09:06:26,126 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 09:06:26,126 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 09:06:26,126 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 09:06:26,126 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 09:06:26,126 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 09:06:26,126 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 09:06:26,126 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 09:06:26,127 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 09:06:26,128 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 09:06:26,128 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 09:06:26,128 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 09:06:26,128 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 09:06:26,128 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 09:06:26,128 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 09:06:26,128 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 09:06:26,128 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 09:06:26,128 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 09:06:26,129 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 09:06:26,129 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 09:06:26,129 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 09:06:26,129 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 09:06:26,129 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 09:06:26,129 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 09:06:26,129 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 09:06:26,129 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 09:06:26,129 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 09:06:26,129 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 -> 7b8d5eeb19c9858fcb0b2998e8b2a6094462b42b704d3f987f7fa52a623cb169 [2025-03-03 09:06:26,355 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 09:06:26,365 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 09:06:26,366 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 09:06:26,367 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 09:06:26,367 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 09:06:26,368 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_running-1.i [2025-03-03 09:06:27,518 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d6c990a6/81245ad81c58401ca1656c5404b21447/FLAG1cd312c59 [2025-03-03 09:06:27,746 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 09:06:27,748 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_running-1.i [2025-03-03 09:06:27,758 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d6c990a6/81245ad81c58401ca1656c5404b21447/FLAG1cd312c59 [2025-03-03 09:06:28,089 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d6c990a6/81245ad81c58401ca1656c5404b21447 [2025-03-03 09:06:28,091 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 09:06:28,092 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 09:06:28,093 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 09:06:28,093 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 09:06:28,096 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 09:06:28,096 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 09:06:28" (1/1) ... [2025-03-03 09:06:28,097 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48d7f33e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:06:28, skipping insertion in model container [2025-03-03 09:06:28,097 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 09:06:28" (1/1) ... [2025-03-03 09:06:28,110 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 09:06:28,207 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_running-1.i[811,824] [2025-03-03 09:06:28,222 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 09:06:28,231 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 09:06:28,238 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_running-1.i[811,824] [2025-03-03 09:06:28,245 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 09:06:28,257 INFO L204 MainTranslator]: Completed translation [2025-03-03 09:06:28,257 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:06:28 WrapperNode [2025-03-03 09:06:28,257 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 09:06:28,259 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 09:06:28,259 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 09:06:28,259 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 09:06:28,263 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:06:28" (1/1) ... [2025-03-03 09:06:28,269 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:06:28" (1/1) ... [2025-03-03 09:06:28,282 INFO L138 Inliner]: procedures = 16, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 75 [2025-03-03 09:06:28,284 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 09:06:28,284 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 09:06:28,285 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 09:06:28,285 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 09:06:28,289 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:06:28" (1/1) ... [2025-03-03 09:06:28,290 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:06:28" (1/1) ... [2025-03-03 09:06:28,291 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:06:28" (1/1) ... [2025-03-03 09:06:28,307 INFO L175 MemorySlicer]: Split 10 memory accesses to 3 slices as follows [2, 4, 4]. 40 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 3 writes are split as follows [0, 1, 2]. [2025-03-03 09:06:28,308 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:06:28" (1/1) ... [2025-03-03 09:06:28,308 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:06:28" (1/1) ... [2025-03-03 09:06:28,311 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:06:28" (1/1) ... [2025-03-03 09:06:28,315 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:06:28" (1/1) ... [2025-03-03 09:06:28,315 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:06:28" (1/1) ... [2025-03-03 09:06:28,316 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:06:28" (1/1) ... [2025-03-03 09:06:28,317 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 09:06:28,322 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 09:06:28,322 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 09:06:28,322 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 09:06:28,323 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:06:28" (1/1) ... [2025-03-03 09:06:28,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 09:06:28,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:06:28,350 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-03 09:06:28,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-03 09:06:28,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 09:06:28,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 09:06:28,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-03 09:06:28,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-03 09:06:28,371 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-03 09:06:28,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-03 09:06:28,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-03 09:06:28,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-03 09:06:28,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 09:06:28,372 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 09:06:28,372 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-03 09:06:28,372 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-03 09:06:28,372 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-03 09:06:28,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-03 09:06:28,424 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 09:06:28,425 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 09:06:28,546 INFO L1325 $ProcedureCfgBuilder]: dead code at ProgramPoint L17: call ULTIMATE.dealloc(main_~#a~0#1.base, main_~#a~0#1.offset);havoc main_~#a~0#1.base, main_~#a~0#1.offset;call ULTIMATE.dealloc(main_~#b~0#1.base, main_~#b~0#1.offset);havoc main_~#b~0#1.base, main_~#b~0#1.offset; [2025-03-03 09:06:28,552 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2025-03-03 09:06:28,552 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 09:06:28,557 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 09:06:28,557 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 09:06:28,557 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 09:06:28 BoogieIcfgContainer [2025-03-03 09:06:28,557 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 09:06:28,559 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 09:06:28,559 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 09:06:28,562 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 09:06:28,562 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 09:06:28" (1/3) ... [2025-03-03 09:06:28,563 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67e2d7b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 09:06:28, skipping insertion in model container [2025-03-03 09:06:28,563 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 09:06:28" (2/3) ... [2025-03-03 09:06:28,564 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67e2d7b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 09:06:28, skipping insertion in model container [2025-03-03 09:06:28,564 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 09:06:28" (3/3) ... [2025-03-03 09:06:28,565 INFO L128 eAbstractionObserver]: Analyzing ICFG standard_running-1.i [2025-03-03 09:06:28,575 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 09:06:28,576 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG standard_running-1.i that has 1 procedures, 20 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2025-03-03 09:06:28,607 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 09:06:28,619 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;@2614af46, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 09:06:28,619 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 09:06:28,623 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:06:28,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-03 09:06:28,627 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:06:28,628 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:06:28,628 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:06:28,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:06:28,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1619788428, now seen corresponding path program 1 times [2025-03-03 09:06:28,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:06:28,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570138691] [2025-03-03 09:06:28,642 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:06:28,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:06:28,710 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-03 09:06:28,724 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-03 09:06:28,725 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:06:28,725 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:06:28,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-03 09:06:28,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:06:28,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570138691] [2025-03-03 09:06:28,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570138691] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:06:28,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:06:28,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-03 09:06:28,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187980362] [2025-03-03 09:06:28,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:06:28,813 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-03 09:06:28,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:06:28,828 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-03 09:06:28,829 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 09:06:28,831 INFO L87 Difference]: Start difference. First operand has 20 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:06:28,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:06:28,888 INFO L93 Difference]: Finished difference Result 48 states and 71 transitions. [2025-03-03 09:06:28,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-03 09:06:28,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2025-03-03 09:06:28,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:06:28,894 INFO L225 Difference]: With dead ends: 48 [2025-03-03 09:06:28,894 INFO L226 Difference]: Without dead ends: 27 [2025-03-03 09:06:28,896 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-03 09:06:28,897 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 13 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 09:06:28,898 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 29 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 09:06:28,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2025-03-03 09:06:28,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 19. [2025-03-03 09:06:28,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:06:28,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 26 transitions. [2025-03-03 09:06:28,916 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 26 transitions. Word has length 7 [2025-03-03 09:06:28,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:06:28,916 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 26 transitions. [2025-03-03 09:06:28,916 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:06:28,917 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 26 transitions. [2025-03-03 09:06:28,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-03-03 09:06:28,917 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:06:28,918 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:06:28,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-03 09:06:28,918 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:06:28,918 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:06:28,918 INFO L85 PathProgramCache]: Analyzing trace with hash -537295212, now seen corresponding path program 1 times [2025-03-03 09:06:28,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:06:28,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943963252] [2025-03-03 09:06:28,918 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:06:28,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:06:28,929 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-03 09:06:28,936 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-03 09:06:28,937 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:06:28,937 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:06:29,009 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-03 09:06:29,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:06:29,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943963252] [2025-03-03 09:06:29,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943963252] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 09:06:29,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756638467] [2025-03-03 09:06:29,010 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:06:29,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:06:29,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:06:29,012 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 09:06:29,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-03 09:06:29,062 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-03 09:06:29,084 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-03 09:06:29,084 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:06:29,084 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:06:29,085 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-03 09:06:29,088 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 09:06:29,115 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-03 09:06:29,116 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 09:06:29,142 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-03 09:06:29,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756638467] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 09:06:29,142 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 09:06:29,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-03-03 09:06:29,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592253802] [2025-03-03 09:06:29,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 09:06:29,143 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-03 09:06:29,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:06:29,144 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-03 09:06:29,144 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-03 09:06:29,144 INFO L87 Difference]: Start difference. First operand 19 states and 26 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:06:29,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:06:29,231 INFO L93 Difference]: Finished difference Result 67 states and 104 transitions. [2025-03-03 09:06:29,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 09:06:29,232 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2025-03-03 09:06:29,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:06:29,232 INFO L225 Difference]: With dead ends: 67 [2025-03-03 09:06:29,232 INFO L226 Difference]: Without dead ends: 52 [2025-03-03 09:06:29,233 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-03 09:06:29,233 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 78 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 09:06:29,233 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 43 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 09:06:29,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2025-03-03 09:06:29,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2025-03-03 09:06:29,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.4509803921568627) internal successors, (74), 51 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:06:29,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 74 transitions. [2025-03-03 09:06:29,239 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 74 transitions. Word has length 18 [2025-03-03 09:06:29,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:06:29,239 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 74 transitions. [2025-03-03 09:06:29,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:06:29,239 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 74 transitions. [2025-03-03 09:06:29,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-03-03 09:06:29,240 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:06:29,240 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:06:29,246 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-03 09:06:29,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:06:29,441 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:06:29,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:06:29,442 INFO L85 PathProgramCache]: Analyzing trace with hash 302029836, now seen corresponding path program 2 times [2025-03-03 09:06:29,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:06:29,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823603936] [2025-03-03 09:06:29,442 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 09:06:29,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:06:29,471 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 51 statements into 2 equivalence classes. [2025-03-03 09:06:29,502 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 51 of 51 statements. [2025-03-03 09:06:29,502 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 09:06:29,502 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:06:29,702 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2025-03-03 09:06:29,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:06:29,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823603936] [2025-03-03 09:06:29,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823603936] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:06:29,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:06:29,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 09:06:29,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477564353] [2025-03-03 09:06:29,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:06:29,703 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 09:06:29,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:06:29,704 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 09:06:29,704 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-03 09:06:29,704 INFO L87 Difference]: Start difference. First operand 52 states and 74 transitions. Second operand has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:06:29,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:06:29,755 INFO L93 Difference]: Finished difference Result 106 states and 156 transitions. [2025-03-03 09:06:29,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 09:06:29,756 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2025-03-03 09:06:29,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:06:29,758 INFO L225 Difference]: With dead ends: 106 [2025-03-03 09:06:29,758 INFO L226 Difference]: Without dead ends: 80 [2025-03-03 09:06:29,758 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-03-03 09:06:29,759 INFO L435 NwaCegarLoop]: 16 mSDtfsCounter, 6 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 09:06:29,759 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 35 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 09:06:29,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2025-03-03 09:06:29,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 68. [2025-03-03 09:06:29,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.462686567164179) internal successors, (98), 67 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:06:29,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 98 transitions. [2025-03-03 09:06:29,768 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 98 transitions. Word has length 51 [2025-03-03 09:06:29,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:06:29,769 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 98 transitions. [2025-03-03 09:06:29,769 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:06:29,769 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 98 transitions. [2025-03-03 09:06:29,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-03-03 09:06:29,770 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:06:29,771 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:06:29,771 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-03 09:06:29,771 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:06:29,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:06:29,771 INFO L85 PathProgramCache]: Analyzing trace with hash -381415988, now seen corresponding path program 1 times [2025-03-03 09:06:29,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:06:29,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611315510] [2025-03-03 09:06:29,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:06:29,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:06:29,793 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-03-03 09:06:29,812 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-03-03 09:06:29,812 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:06:29,812 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:06:29,989 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2025-03-03 09:06:29,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:06:29,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611315510] [2025-03-03 09:06:29,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [611315510] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:06:29,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:06:29,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 09:06:29,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36897853] [2025-03-03 09:06:29,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:06:29,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 09:06:29,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:06:29,990 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 09:06:29,990 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-03 09:06:29,990 INFO L87 Difference]: Start difference. First operand 68 states and 98 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:06:30,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:06:30,035 INFO L93 Difference]: Finished difference Result 124 states and 177 transitions. [2025-03-03 09:06:30,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 09:06:30,036 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2025-03-03 09:06:30,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:06:30,037 INFO L225 Difference]: With dead ends: 124 [2025-03-03 09:06:30,037 INFO L226 Difference]: Without dead ends: 84 [2025-03-03 09:06:30,037 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2025-03-03 09:06:30,040 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 10 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 09:06:30,040 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 37 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 09:06:30,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2025-03-03 09:06:30,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 68. [2025-03-03 09:06:30,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.4029850746268657) internal successors, (94), 67 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:06:30,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2025-03-03 09:06:30,044 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 51 [2025-03-03 09:06:30,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:06:30,045 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2025-03-03 09:06:30,045 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:06:30,045 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2025-03-03 09:06:30,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-03-03 09:06:30,045 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:06:30,045 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:06:30,046 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-03 09:06:30,046 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:06:30,046 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:06:30,046 INFO L85 PathProgramCache]: Analyzing trace with hash -93400052, now seen corresponding path program 1 times [2025-03-03 09:06:30,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:06:30,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310495967] [2025-03-03 09:06:30,046 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:06:30,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:06:30,057 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-03-03 09:06:30,064 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-03-03 09:06:30,065 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:06:30,065 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:06:30,132 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2025-03-03 09:06:30,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:06:30,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310495967] [2025-03-03 09:06:30,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310495967] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 09:06:30,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 09:06:30,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-03 09:06:30,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582349668] [2025-03-03 09:06:30,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 09:06:30,133 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-03 09:06:30,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:06:30,133 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-03 09:06:30,133 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 09:06:30,133 INFO L87 Difference]: Start difference. First operand 68 states and 94 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:06:30,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:06:30,147 INFO L93 Difference]: Finished difference Result 109 states and 150 transitions. [2025-03-03 09:06:30,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-03 09:06:30,147 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2025-03-03 09:06:30,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:06:30,149 INFO L225 Difference]: With dead ends: 109 [2025-03-03 09:06:30,149 INFO L226 Difference]: Without dead ends: 106 [2025-03-03 09:06:30,149 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-03 09:06:30,150 INFO L435 NwaCegarLoop]: 22 mSDtfsCounter, 2 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 09:06:30,150 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 61 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 09:06:30,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2025-03-03 09:06:30,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 101. [2025-03-03 09:06:30,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 100 states have (on average 1.42) internal successors, (142), 100 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:06:30,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 142 transitions. [2025-03-03 09:06:30,163 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 142 transitions. Word has length 51 [2025-03-03 09:06:30,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:06:30,164 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 142 transitions. [2025-03-03 09:06:30,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:06:30,164 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 142 transitions. [2025-03-03 09:06:30,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-03-03 09:06:30,164 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:06:30,164 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:06:30,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-03 09:06:30,165 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:06:30,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:06:30,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1836210387, now seen corresponding path program 1 times [2025-03-03 09:06:30,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:06:30,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493403184] [2025-03-03 09:06:30,165 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:06:30,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:06:30,189 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-03-03 09:06:30,201 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-03-03 09:06:30,201 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:06:30,201 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:06:30,295 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2025-03-03 09:06:30,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:06:30,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493403184] [2025-03-03 09:06:30,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493403184] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 09:06:30,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [555787954] [2025-03-03 09:06:30,295 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:06:30,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:06:30,296 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:06:30,297 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 09:06:30,299 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-03 09:06:30,342 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-03-03 09:06:30,366 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-03-03 09:06:30,366 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:06:30,366 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:06:30,367 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-03 09:06:30,369 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 09:06:30,385 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2025-03-03 09:06:30,385 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 09:06:30,447 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2025-03-03 09:06:30,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [555787954] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 09:06:30,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 09:06:30,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-03-03 09:06:30,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125349804] [2025-03-03 09:06:30,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 09:06:30,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-03 09:06:30,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:06:30,449 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-03 09:06:30,449 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-03-03 09:06:30,449 INFO L87 Difference]: Start difference. First operand 101 states and 142 transitions. Second operand has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:06:30,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:06:30,607 INFO L93 Difference]: Finished difference Result 356 states and 521 transitions. [2025-03-03 09:06:30,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-03 09:06:30,608 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2025-03-03 09:06:30,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:06:30,609 INFO L225 Difference]: With dead ends: 356 [2025-03-03 09:06:30,609 INFO L226 Difference]: Without dead ends: 262 [2025-03-03 09:06:30,609 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-03-03 09:06:30,610 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 299 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 09:06:30,610 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [299 Valid, 76 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 09:06:30,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2025-03-03 09:06:30,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 257. [2025-03-03 09:06:30,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 256 states have (on average 1.421875) internal successors, (364), 256 states have internal predecessors, (364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:06:30,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 364 transitions. [2025-03-03 09:06:30,630 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 364 transitions. Word has length 51 [2025-03-03 09:06:30,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:06:30,630 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 364 transitions. [2025-03-03 09:06:30,630 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.3076923076923075) internal successors, (30), 13 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:06:30,630 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 364 transitions. [2025-03-03 09:06:30,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2025-03-03 09:06:30,635 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:06:30,635 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:06:30,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-03 09:06:30,836 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,SelfDestructingSolverStorable5 [2025-03-03 09:06:30,836 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:06:30,836 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:06:30,836 INFO L85 PathProgramCache]: Analyzing trace with hash 972566893, now seen corresponding path program 2 times [2025-03-03 09:06:30,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:06:30,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872639712] [2025-03-03 09:06:30,837 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 09:06:30,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:06:30,861 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 117 statements into 2 equivalence classes. [2025-03-03 09:06:30,874 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 117 of 117 statements. [2025-03-03 09:06:30,874 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 09:06:30,874 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:06:31,161 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2025-03-03 09:06:31,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:06:31,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872639712] [2025-03-03 09:06:31,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872639712] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 09:06:31,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094955637] [2025-03-03 09:06:31,162 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 09:06:31,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:06:31,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:06:31,164 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 09:06:31,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-03 09:06:31,235 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 117 statements into 2 equivalence classes. [2025-03-03 09:06:31,282 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 117 of 117 statements. [2025-03-03 09:06:31,283 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 09:06:31,283 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:06:31,286 INFO L256 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-03 09:06:31,289 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 09:06:31,315 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2025-03-03 09:06:31,315 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 09:06:31,505 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2025-03-03 09:06:31,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094955637] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 09:06:31,505 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 09:06:31,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2025-03-03 09:06:31,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292300203] [2025-03-03 09:06:31,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 09:06:31,507 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-03-03 09:06:31,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:06:31,508 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-03-03 09:06:31,508 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-03-03 09:06:31,508 INFO L87 Difference]: Start difference. First operand 257 states and 364 transitions. Second operand has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:06:31,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:06:31,831 INFO L93 Difference]: Finished difference Result 818 states and 1199 transitions. [2025-03-03 09:06:31,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-03-03 09:06:31,832 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2025-03-03 09:06:31,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:06:31,834 INFO L225 Difference]: With dead ends: 818 [2025-03-03 09:06:31,836 INFO L226 Difference]: Without dead ends: 574 [2025-03-03 09:06:31,837 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 222 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-03-03 09:06:31,838 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 884 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 884 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2025-03-03 09:06:31,838 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [884 Valid, 151 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2025-03-03 09:06:31,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2025-03-03 09:06:31,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 569. [2025-03-03 09:06:31,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 568 states have (on average 1.4225352112676057) internal successors, (808), 568 states have internal predecessors, (808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:06:31,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 808 transitions. [2025-03-03 09:06:31,870 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 808 transitions. Word has length 117 [2025-03-03 09:06:31,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:06:31,873 INFO L471 AbstractCegarLoop]: Abstraction has 569 states and 808 transitions. [2025-03-03 09:06:31,873 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:06:31,873 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 808 transitions. [2025-03-03 09:06:31,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2025-03-03 09:06:31,875 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:06:31,876 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 21, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:06:31,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-03 09:06:32,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:06:32,077 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:06:32,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:06:32,078 INFO L85 PathProgramCache]: Analyzing trace with hash 809133549, now seen corresponding path program 3 times [2025-03-03 09:06:32,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:06:32,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86745390] [2025-03-03 09:06:32,078 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-03 09:06:32,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:06:32,107 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 249 statements into 23 equivalence classes. [2025-03-03 09:06:32,127 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 31 of 249 statements. [2025-03-03 09:06:32,127 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-03 09:06:32,127 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:06:32,364 INFO L134 CoverageAnalysis]: Checked inductivity of 2607 backedges. 64 proven. 169 refuted. 0 times theorem prover too weak. 2374 trivial. 0 not checked. [2025-03-03 09:06:32,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:06:32,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86745390] [2025-03-03 09:06:32,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86745390] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 09:06:32,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92261208] [2025-03-03 09:06:32,364 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-03 09:06:32,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:06:32,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:06:32,366 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 09:06:32,368 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-03 09:06:32,463 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 249 statements into 23 equivalence classes. [2025-03-03 09:06:32,479 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 31 of 249 statements. [2025-03-03 09:06:32,480 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-03 09:06:32,480 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:06:32,481 INFO L256 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 17 conjuncts are in the unsatisfiable core [2025-03-03 09:06:32,490 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 09:06:32,530 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2025-03-03 09:06:32,822 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-03 09:06:32,822 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 25 [2025-03-03 09:06:32,855 INFO L134 CoverageAnalysis]: Checked inductivity of 2607 backedges. 107 proven. 127 refuted. 0 times theorem prover too weak. 2373 trivial. 0 not checked. [2025-03-03 09:06:32,855 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 09:06:33,140 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2025-03-03 09:06:33,144 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2025-03-03 09:06:33,149 INFO L134 CoverageAnalysis]: Checked inductivity of 2607 backedges. 64 proven. 148 refuted. 0 times theorem prover too weak. 2395 trivial. 0 not checked. [2025-03-03 09:06:33,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92261208] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 09:06:33,150 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 09:06:33,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 18 [2025-03-03 09:06:33,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722064557] [2025-03-03 09:06:33,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 09:06:33,150 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2025-03-03 09:06:33,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:06:33,151 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2025-03-03 09:06:33,151 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=221, Unknown=0, NotChecked=0, Total=306 [2025-03-03 09:06:33,151 INFO L87 Difference]: Start difference. First operand 569 states and 808 transitions. Second operand has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:06:33,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:06:33,323 INFO L93 Difference]: Finished difference Result 1324 states and 1801 transitions. [2025-03-03 09:06:33,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-03 09:06:33,323 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 249 [2025-03-03 09:06:33,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:06:33,330 INFO L225 Difference]: With dead ends: 1324 [2025-03-03 09:06:33,330 INFO L226 Difference]: Without dead ends: 1321 [2025-03-03 09:06:33,331 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 512 GetRequests, 486 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506 [2025-03-03 09:06:33,332 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 123 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 09:06:33,332 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 83 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 09:06:33,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1321 states. [2025-03-03 09:06:33,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1321 to 1044. [2025-03-03 09:06:33,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1044 states, 1043 states have (on average 1.4372003835091083) internal successors, (1499), 1043 states have internal predecessors, (1499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:06:33,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1044 states to 1044 states and 1499 transitions. [2025-03-03 09:06:33,386 INFO L78 Accepts]: Start accepts. Automaton has 1044 states and 1499 transitions. Word has length 249 [2025-03-03 09:06:33,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:06:33,386 INFO L471 AbstractCegarLoop]: Abstraction has 1044 states and 1499 transitions. [2025-03-03 09:06:33,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.6666666666666665) internal successors, (48), 18 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:06:33,386 INFO L276 IsEmpty]: Start isEmpty. Operand 1044 states and 1499 transitions. [2025-03-03 09:06:33,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2025-03-03 09:06:33,392 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:06:33,392 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:06:33,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-03 09:06:33,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:06:33,593 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:06:33,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:06:33,593 INFO L85 PathProgramCache]: Analyzing trace with hash 714936749, now seen corresponding path program 1 times [2025-03-03 09:06:33,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:06:33,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477714177] [2025-03-03 09:06:33,593 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:06:33,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:06:33,628 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 249 statements into 1 equivalence classes. [2025-03-03 09:06:33,663 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 249 of 249 statements. [2025-03-03 09:06:33,665 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:06:33,666 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:06:34,527 INFO L134 CoverageAnalysis]: Checked inductivity of 2607 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2354 trivial. 0 not checked. [2025-03-03 09:06:34,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:06:34,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477714177] [2025-03-03 09:06:34,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477714177] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 09:06:34,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245245178] [2025-03-03 09:06:34,527 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 09:06:34,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:06:34,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:06:34,530 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 09:06:34,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-03 09:06:34,629 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 249 statements into 1 equivalence classes. [2025-03-03 09:06:34,713 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 249 of 249 statements. [2025-03-03 09:06:34,713 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 09:06:34,713 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:06:34,716 INFO L256 TraceCheckSpWp]: Trace formula consists of 829 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-03-03 09:06:34,719 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 09:06:34,759 INFO L134 CoverageAnalysis]: Checked inductivity of 2607 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2354 trivial. 0 not checked. [2025-03-03 09:06:34,759 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 09:06:35,373 INFO L134 CoverageAnalysis]: Checked inductivity of 2607 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2354 trivial. 0 not checked. [2025-03-03 09:06:35,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245245178] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 09:06:35,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 09:06:35,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2025-03-03 09:06:35,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130514468] [2025-03-03 09:06:35,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 09:06:35,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2025-03-03 09:06:35,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:06:35,376 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2025-03-03 09:06:35,377 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2025-03-03 09:06:35,377 INFO L87 Difference]: Start difference. First operand 1044 states and 1499 transitions. Second operand has 49 states, 49 states have (on average 1.3877551020408163) internal successors, (68), 49 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:06:36,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:06:36,346 INFO L93 Difference]: Finished difference Result 3524 states and 5058 transitions. [2025-03-03 09:06:36,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-03-03 09:06:36,346 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.3877551020408163) internal successors, (68), 49 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 249 [2025-03-03 09:06:36,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:06:36,355 INFO L225 Difference]: With dead ends: 3524 [2025-03-03 09:06:36,356 INFO L226 Difference]: Without dead ends: 2505 [2025-03-03 09:06:36,358 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 474 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2025-03-03 09:06:36,359 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 2392 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 419 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2392 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 419 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-03 09:06:36,359 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2392 Valid, 298 Invalid, 895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [419 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-03 09:06:36,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2505 states. [2025-03-03 09:06:36,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2505 to 2196. [2025-03-03 09:06:36,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2196 states, 2195 states have (on average 1.4373576309794989) internal successors, (3155), 2195 states have internal predecessors, (3155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:06:36,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2196 states to 2196 states and 3155 transitions. [2025-03-03 09:06:36,445 INFO L78 Accepts]: Start accepts. Automaton has 2196 states and 3155 transitions. Word has length 249 [2025-03-03 09:06:36,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:06:36,445 INFO L471 AbstractCegarLoop]: Abstraction has 2196 states and 3155 transitions. [2025-03-03 09:06:36,445 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.3877551020408163) internal successors, (68), 49 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:06:36,446 INFO L276 IsEmpty]: Start isEmpty. Operand 2196 states and 3155 transitions. [2025-03-03 09:06:36,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2025-03-03 09:06:36,452 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:06:36,452 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 46, 46, 46, 45, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:06:36,459 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-03 09:06:36,656 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:06:36,656 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:06:36,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:06:36,656 INFO L85 PathProgramCache]: Analyzing trace with hash 328596141, now seen corresponding path program 2 times [2025-03-03 09:06:36,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:06:36,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721349433] [2025-03-03 09:06:36,657 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 09:06:36,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:06:36,714 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 513 statements into 2 equivalence classes. [2025-03-03 09:06:36,764 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 513 of 513 statements. [2025-03-03 09:06:36,764 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 09:06:36,764 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:06:39,346 INFO L134 CoverageAnalysis]: Checked inductivity of 11523 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 10442 trivial. 0 not checked. [2025-03-03 09:06:39,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:06:39,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721349433] [2025-03-03 09:06:39,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721349433] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 09:06:39,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947948713] [2025-03-03 09:06:39,347 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 09:06:39,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:06:39,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:06:39,349 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 09:06:39,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-03 09:06:39,533 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 513 statements into 2 equivalence classes. [2025-03-03 09:06:39,677 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 513 of 513 statements. [2025-03-03 09:06:39,677 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 09:06:39,677 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:06:39,689 INFO L256 TraceCheckSpWp]: Trace formula consists of 1669 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-03-03 09:06:39,694 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 09:06:39,782 INFO L134 CoverageAnalysis]: Checked inductivity of 11523 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 10442 trivial. 0 not checked. [2025-03-03 09:06:39,782 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 09:06:41,704 INFO L134 CoverageAnalysis]: Checked inductivity of 11523 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 10442 trivial. 0 not checked. [2025-03-03 09:06:41,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947948713] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 09:06:41,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 09:06:41,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 97 [2025-03-03 09:06:41,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853664251] [2025-03-03 09:06:41,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 09:06:41,706 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2025-03-03 09:06:41,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:06:41,708 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2025-03-03 09:06:41,711 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2025-03-03 09:06:41,712 INFO L87 Difference]: Start difference. First operand 2196 states and 3155 transitions. Second operand has 97 states, 97 states have (on average 1.1958762886597938) internal successors, (116), 97 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:06:46,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:06:46,320 INFO L93 Difference]: Finished difference Result 7244 states and 10410 transitions. [2025-03-03 09:06:46,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2025-03-03 09:06:46,321 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 1.1958762886597938) internal successors, (116), 97 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 513 [2025-03-03 09:06:46,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:06:46,334 INFO L225 Difference]: With dead ends: 7244 [2025-03-03 09:06:46,334 INFO L226 Difference]: Without dead ends: 5097 [2025-03-03 09:06:46,338 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1073 GetRequests, 978 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2025-03-03 09:06:46,338 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 5330 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 958 mSolverCounterSat, 919 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5330 SdHoareTripleChecker+Valid, 592 SdHoareTripleChecker+Invalid, 1877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 919 IncrementalHoareTripleChecker+Valid, 958 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2025-03-03 09:06:46,338 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5330 Valid, 592 Invalid, 1877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [919 Valid, 958 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2025-03-03 09:06:46,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5097 states. [2025-03-03 09:06:46,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5097 to 4500. [2025-03-03 09:06:46,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4500 states, 4499 states have (on average 1.4374305401200267) internal successors, (6467), 4499 states have internal predecessors, (6467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:06:46,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4500 states to 4500 states and 6467 transitions. [2025-03-03 09:06:46,427 INFO L78 Accepts]: Start accepts. Automaton has 4500 states and 6467 transitions. Word has length 513 [2025-03-03 09:06:46,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:06:46,427 INFO L471 AbstractCegarLoop]: Abstraction has 4500 states and 6467 transitions. [2025-03-03 09:06:46,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 1.1958762886597938) internal successors, (116), 97 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:06:46,428 INFO L276 IsEmpty]: Start isEmpty. Operand 4500 states and 6467 transitions. [2025-03-03 09:06:46,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1042 [2025-03-03 09:06:46,446 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:06:46,446 INFO L218 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 94, 94, 94, 94, 93, 93, 93, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:06:46,458 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-03 09:06:46,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:06:46,647 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:06:46,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:06:46,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1834601645, now seen corresponding path program 3 times [2025-03-03 09:06:46,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:06:46,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27619115] [2025-03-03 09:06:46,648 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-03 09:06:46,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:06:46,734 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 1041 statements into 95 equivalence classes. [2025-03-03 09:06:46,747 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 31 of 1041 statements. [2025-03-03 09:06:46,747 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-03 09:06:46,747 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:06:46,958 INFO L134 CoverageAnalysis]: Checked inductivity of 48363 backedges. 280 proven. 745 refuted. 0 times theorem prover too weak. 47338 trivial. 0 not checked. [2025-03-03 09:06:46,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:06:46,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27619115] [2025-03-03 09:06:46,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27619115] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 09:06:46,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494989890] [2025-03-03 09:06:46,959 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-03 09:06:46,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:06:46,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:06:46,960 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 09:06:46,962 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-03 09:06:47,269 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 1041 statements into 95 equivalence classes. [2025-03-03 09:06:47,289 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 31 of 1041 statements. [2025-03-03 09:06:47,289 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-03 09:06:47,290 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:06:47,292 INFO L256 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 14 conjuncts are in the unsatisfiable core [2025-03-03 09:06:47,302 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 09:06:47,322 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2025-03-03 09:06:48,054 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-03 09:06:48,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 25 [2025-03-03 09:06:48,082 INFO L134 CoverageAnalysis]: Checked inductivity of 48363 backedges. 652 proven. 280 refuted. 0 times theorem prover too weak. 47431 trivial. 0 not checked. [2025-03-03 09:06:48,082 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 09:06:48,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2025-03-03 09:06:48,763 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2025-03-03 09:06:48,781 INFO L134 CoverageAnalysis]: Checked inductivity of 48363 backedges. 280 proven. 652 refuted. 0 times theorem prover too weak. 47431 trivial. 0 not checked. [2025-03-03 09:06:48,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494989890] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 09:06:48,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 09:06:48,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 22 [2025-03-03 09:06:48,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023912271] [2025-03-03 09:06:48,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 09:06:48,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-03-03 09:06:48,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 09:06:48,784 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-03-03 09:06:48,784 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=362, Unknown=0, NotChecked=0, Total=462 [2025-03-03 09:06:48,784 INFO L87 Difference]: Start difference. First operand 4500 states and 6467 transitions. Second operand has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 22 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:06:49,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 09:06:49,095 INFO L93 Difference]: Finished difference Result 4971 states and 7030 transitions. [2025-03-03 09:06:49,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2025-03-03 09:06:49,096 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 22 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1041 [2025-03-03 09:06:49,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 09:06:49,108 INFO L225 Difference]: With dead ends: 4971 [2025-03-03 09:06:49,109 INFO L226 Difference]: Without dead ends: 4968 [2025-03-03 09:06:49,111 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2103 GetRequests, 2069 SyntacticMatches, 5 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=247, Invalid=683, Unknown=0, NotChecked=0, Total=930 [2025-03-03 09:06:49,111 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 208 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 09:06:49,111 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 112 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 09:06:49,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4968 states. [2025-03-03 09:06:49,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4968 to 4490. [2025-03-03 09:06:49,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4490 states, 4489 states have (on average 1.4375139229226999) internal successors, (6453), 4489 states have internal predecessors, (6453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:06:49,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4490 states to 4490 states and 6453 transitions. [2025-03-03 09:06:49,235 INFO L78 Accepts]: Start accepts. Automaton has 4490 states and 6453 transitions. Word has length 1041 [2025-03-03 09:06:49,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 09:06:49,236 INFO L471 AbstractCegarLoop]: Abstraction has 4490 states and 6453 transitions. [2025-03-03 09:06:49,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.0454545454545454) internal successors, (67), 22 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 09:06:49,236 INFO L276 IsEmpty]: Start isEmpty. Operand 4490 states and 6453 transitions. [2025-03-03 09:06:49,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1042 [2025-03-03 09:06:49,256 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 09:06:49,256 INFO L218 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 93, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 09:06:49,263 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-03 09:06:49,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:06:49,457 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 09:06:49,458 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 09:06:49,458 INFO L85 PathProgramCache]: Analyzing trace with hash -2130910325, now seen corresponding path program 4 times [2025-03-03 09:06:49,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 09:06:49,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033530944] [2025-03-03 09:06:49,458 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-03 09:06:49,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 09:06:49,559 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 1041 statements into 2 equivalence classes. [2025-03-03 09:06:49,928 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 1041 of 1041 statements. [2025-03-03 09:06:49,928 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-03 09:06:49,928 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 09:06:58,488 INFO L134 CoverageAnalysis]: Checked inductivity of 48363 backedges. 0 proven. 13207 refuted. 0 times theorem prover too weak. 35156 trivial. 0 not checked. [2025-03-03 09:06:58,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 09:06:58,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033530944] [2025-03-03 09:06:58,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033530944] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 09:06:58,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989791311] [2025-03-03 09:06:58,489 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-03 09:06:58,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 09:06:58,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 09:06:58,491 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 09:06:58,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-03 09:06:58,818 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 1041 statements into 2 equivalence classes.