./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 e2fb8bed Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-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-?-e2fb8be-m [2025-03-08 00:15:55,498 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-08 00:15:55,553 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-08 00:15:55,558 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-08 00:15:55,562 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-08 00:15:55,586 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-08 00:15:55,587 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-08 00:15:55,587 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-08 00:15:55,587 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-08 00:15:55,588 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-08 00:15:55,588 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-08 00:15:55,588 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-08 00:15:55,589 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-08 00:15:55,589 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-08 00:15:55,589 INFO L153 SettingsManager]: * Use SBE=true [2025-03-08 00:15:55,589 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-08 00:15:55,589 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-08 00:15:55,589 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-08 00:15:55,590 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-08 00:15:55,590 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-08 00:15:55,590 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-08 00:15:55,590 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-08 00:15:55,590 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-08 00:15:55,590 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-08 00:15:55,590 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-08 00:15:55,590 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-08 00:15:55,590 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-08 00:15:55,590 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-08 00:15:55,590 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-08 00:15:55,590 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-08 00:15:55,591 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-08 00:15:55,591 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-08 00:15:55,591 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 00:15:55,591 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-08 00:15:55,591 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-08 00:15:55,591 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-08 00:15:55,591 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-08 00:15:55,591 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-08 00:15:55,591 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-08 00:15:55,591 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-08 00:15:55,591 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-08 00:15:55,591 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-08 00:15:55,591 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-08 00:15:55,592 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 [2025-03-08 00:15:55,825 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-08 00:15:55,831 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-08 00:15:55,832 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-08 00:15:55,833 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-08 00:15:55,833 INFO L274 PluginConnector]: CDTParser initialized [2025-03-08 00:15:55,834 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_running-1.i [2025-03-08 00:15:56,882 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1ffa36e1/1caddc5830034953aad532e00c318728/FLAGe9d1efe69 [2025-03-08 00:15:57,090 INFO L384 CDTParser]: Found 1 translation units. [2025-03-08 00:15:57,091 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_running-1.i [2025-03-08 00:15:57,101 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1ffa36e1/1caddc5830034953aad532e00c318728/FLAGe9d1efe69 [2025-03-08 00:15:57,123 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c1ffa36e1/1caddc5830034953aad532e00c318728 [2025-03-08 00:15:57,125 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-08 00:15:57,127 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-08 00:15:57,129 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-08 00:15:57,129 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-08 00:15:57,132 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-08 00:15:57,133 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 12:15:57" (1/1) ... [2025-03-08 00:15:57,135 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63604a79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:15:57, skipping insertion in model container [2025-03-08 00:15:57,135 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.03 12:15:57" (1/1) ... [2025-03-08 00:15:57,146 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-08 00:15:57,248 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] [2025-03-08 00:15:57,264 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 00:15:57,271 INFO L200 MainTranslator]: Completed pre-run [2025-03-08 00:15:57,280 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] [2025-03-08 00:15:57,286 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-08 00:15:57,297 INFO L204 MainTranslator]: Completed translation [2025-03-08 00:15:57,298 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:15:57 WrapperNode [2025-03-08 00:15:57,298 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-08 00:15:57,299 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-08 00:15:57,300 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-08 00:15:57,300 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-08 00:15:57,304 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:15:57" (1/1) ... [2025-03-08 00:15:57,310 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:15:57" (1/1) ... [2025-03-08 00:15:57,322 INFO L138 Inliner]: procedures = 16, calls = 21, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 75 [2025-03-08 00:15:57,323 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-08 00:15:57,324 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-08 00:15:57,324 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-08 00:15:57,324 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-08 00:15:57,329 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:15:57" (1/1) ... [2025-03-08 00:15:57,329 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:15:57" (1/1) ... [2025-03-08 00:15:57,331 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:15:57" (1/1) ... [2025-03-08 00:15:57,340 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, 2, 1]. [2025-03-08 00:15:57,342 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:15:57" (1/1) ... [2025-03-08 00:15:57,343 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:15:57" (1/1) ... [2025-03-08 00:15:57,346 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:15:57" (1/1) ... [2025-03-08 00:15:57,350 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:15:57" (1/1) ... [2025-03-08 00:15:57,350 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:15:57" (1/1) ... [2025-03-08 00:15:57,351 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:15:57" (1/1) ... [2025-03-08 00:15:57,352 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-08 00:15:57,352 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-08 00:15:57,352 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-08 00:15:57,352 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-08 00:15:57,357 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:15:57" (1/1) ... [2025-03-08 00:15:57,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-08 00:15:57,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:15:57,383 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-08 00:15:57,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-08 00:15:57,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-08 00:15:57,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-08 00:15:57,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2025-03-08 00:15:57,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2025-03-08 00:15:57,403 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2025-03-08 00:15:57,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2025-03-08 00:15:57,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2025-03-08 00:15:57,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2025-03-08 00:15:57,403 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-08 00:15:57,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-08 00:15:57,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2025-03-08 00:15:57,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2025-03-08 00:15:57,403 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2025-03-08 00:15:57,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2025-03-08 00:15:57,456 INFO L256 CfgBuilder]: Building ICFG [2025-03-08 00:15:57,457 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-08 00:15:57,573 INFO L1307 $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; [2025-03-08 00:15:57,579 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2025-03-08 00:15:57,579 INFO L307 CfgBuilder]: Performing block encoding [2025-03-08 00:15:57,587 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-08 00:15:57,587 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-08 00:15:57,588 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 12:15:57 BoogieIcfgContainer [2025-03-08 00:15:57,588 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-08 00:15:57,590 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-08 00:15:57,590 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-08 00:15:57,594 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-08 00:15:57,595 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.03 12:15:57" (1/3) ... [2025-03-08 00:15:57,595 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eaaf360 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 12:15:57, skipping insertion in model container [2025-03-08 00:15:57,595 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.03 12:15:57" (2/3) ... [2025-03-08 00:15:57,596 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2eaaf360 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.03 12:15:57, skipping insertion in model container [2025-03-08 00:15:57,596 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 08.03 12:15:57" (3/3) ... [2025-03-08 00:15:57,597 INFO L128 eAbstractionObserver]: Analyzing ICFG standard_running-1.i [2025-03-08 00:15:57,607 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-08 00:15:57,608 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. [2025-03-08 00:15:57,652 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-08 00:15:57,662 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;@26e26916, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-08 00:15:57,662 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-08 00:15:57,665 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) [2025-03-08 00:15:57,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2025-03-08 00:15:57,670 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:15:57,670 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:15:57,670 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:15:57,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:15:57,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1619788428, now seen corresponding path program 1 times [2025-03-08 00:15:57,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:15:57,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499919941] [2025-03-08 00:15:57,682 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:15:57,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:15:57,735 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 7 statements into 1 equivalence classes. [2025-03-08 00:15:57,747 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 7 of 7 statements. [2025-03-08 00:15:57,748 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:15:57,748 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:15:57,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2025-03-08 00:15:57,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:15:57,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499919941] [2025-03-08 00:15:57,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499919941] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 00:15:57,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 00:15:57,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2025-03-08 00:15:57,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403130167] [2025-03-08 00:15:57,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 00:15:57,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2025-03-08 00:15:57,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:15:57,837 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2025-03-08 00:15:57,837 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 00:15:57,839 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) [2025-03-08 00:15:57,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:15:57,884 INFO L93 Difference]: Finished difference Result 48 states and 71 transitions. [2025-03-08 00:15:57,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2025-03-08 00:15:57,886 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 [2025-03-08 00:15:57,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:15:57,891 INFO L225 Difference]: With dead ends: 48 [2025-03-08 00:15:57,891 INFO L226 Difference]: Without dead ends: 27 [2025-03-08 00:15:57,893 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2025-03-08 00:15:57,895 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 [2025-03-08 00:15:57,895 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] [2025-03-08 00:15:57,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2025-03-08 00:15:57,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 19. [2025-03-08 00:15:57,916 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) [2025-03-08 00:15:57,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 26 transitions. [2025-03-08 00:15:57,919 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 26 transitions. Word has length 7 [2025-03-08 00:15:57,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:15:57,920 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 26 transitions. [2025-03-08 00:15:57,920 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) [2025-03-08 00:15:57,920 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 26 transitions. [2025-03-08 00:15:57,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2025-03-08 00:15:57,920 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:15:57,921 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:15:57,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2025-03-08 00:15:57,921 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:15:57,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:15:57,921 INFO L85 PathProgramCache]: Analyzing trace with hash -537295212, now seen corresponding path program 1 times [2025-03-08 00:15:57,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:15:57,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626696455] [2025-03-08 00:15:57,921 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:15:57,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:15:57,933 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-08 00:15:57,941 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-08 00:15:57,941 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:15:57,941 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:15:58,043 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-08 00:15:58,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:15:58,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626696455] [2025-03-08 00:15:58,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626696455] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 00:15:58,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68026025] [2025-03-08 00:15:58,045 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:15:58,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:15:58,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:15:58,048 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 00:15:58,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-08 00:15:58,095 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 18 statements into 1 equivalence classes. [2025-03-08 00:15:58,110 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 18 of 18 statements. [2025-03-08 00:15:58,110 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:15:58,110 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:15:58,113 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 3 conjuncts are in the unsatisfiable core [2025-03-08 00:15:58,115 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 00:15:58,149 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-08 00:15:58,149 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 00:15:58,172 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2025-03-08 00:15:58,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68026025] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 00:15:58,173 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 00:15:58,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2025-03-08 00:15:58,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268432167] [2025-03-08 00:15:58,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 00:15:58,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2025-03-08 00:15:58,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:15:58,176 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2025-03-08 00:15:58,176 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2025-03-08 00:15:58,177 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) [2025-03-08 00:15:58,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:15:58,277 INFO L93 Difference]: Finished difference Result 67 states and 104 transitions. [2025-03-08 00:15:58,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 00:15:58,277 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 [2025-03-08 00:15:58,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:15:58,278 INFO L225 Difference]: With dead ends: 67 [2025-03-08 00:15:58,278 INFO L226 Difference]: Without dead ends: 52 [2025-03-08 00:15:58,278 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 [2025-03-08 00:15:58,279 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 [2025-03-08 00:15:58,279 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] [2025-03-08 00:15:58,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2025-03-08 00:15:58,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2025-03-08 00:15:58,284 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) [2025-03-08 00:15:58,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 74 transitions. [2025-03-08 00:15:58,285 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 74 transitions. Word has length 18 [2025-03-08 00:15:58,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:15:58,286 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 74 transitions. [2025-03-08 00:15:58,286 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) [2025-03-08 00:15:58,286 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 74 transitions. [2025-03-08 00:15:58,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-03-08 00:15:58,287 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:15:58,287 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:15:58,296 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-08 00:15:58,491 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:15:58,491 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:15:58,491 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:15:58,492 INFO L85 PathProgramCache]: Analyzing trace with hash 302029836, now seen corresponding path program 2 times [2025-03-08 00:15:58,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:15:58,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366549625] [2025-03-08 00:15:58,492 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 00:15:58,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:15:58,516 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 51 statements into 2 equivalence classes. [2025-03-08 00:15:58,534 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 51 of 51 statements. [2025-03-08 00:15:58,535 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 00:15:58,535 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:15:58,733 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2025-03-08 00:15:58,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:15:58,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366549625] [2025-03-08 00:15:58,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366549625] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 00:15:58,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 00:15:58,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 00:15:58,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337709480] [2025-03-08 00:15:58,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 00:15:58,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 00:15:58,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:15:58,734 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 00:15:58,734 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-08 00:15:58,734 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) [2025-03-08 00:15:58,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:15:58,783 INFO L93 Difference]: Finished difference Result 106 states and 156 transitions. [2025-03-08 00:15:58,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 00:15:58,783 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 [2025-03-08 00:15:58,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:15:58,784 INFO L225 Difference]: With dead ends: 106 [2025-03-08 00:15:58,784 INFO L226 Difference]: Without dead ends: 80 [2025-03-08 00:15:58,784 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 [2025-03-08 00:15:58,785 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 [2025-03-08 00:15:58,785 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] [2025-03-08 00:15:58,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2025-03-08 00:15:58,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 68. [2025-03-08 00:15:58,792 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) [2025-03-08 00:15:58,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 98 transitions. [2025-03-08 00:15:58,793 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 98 transitions. Word has length 51 [2025-03-08 00:15:58,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:15:58,794 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 98 transitions. [2025-03-08 00:15:58,794 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) [2025-03-08 00:15:58,794 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 98 transitions. [2025-03-08 00:15:58,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-03-08 00:15:58,794 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:15:58,795 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:15:58,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2025-03-08 00:15:58,795 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:15:58,795 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:15:58,795 INFO L85 PathProgramCache]: Analyzing trace with hash -381415988, now seen corresponding path program 1 times [2025-03-08 00:15:58,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:15:58,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095623570] [2025-03-08 00:15:58,795 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:15:58,795 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:15:58,814 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-03-08 00:15:58,829 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-03-08 00:15:58,830 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:15:58,830 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:15:58,999 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2025-03-08 00:15:59,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:15:59,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095623570] [2025-03-08 00:15:59,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095623570] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 00:15:59,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 00:15:59,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-08 00:15:59,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258830211] [2025-03-08 00:15:59,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 00:15:59,000 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-08 00:15:59,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:15:59,000 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-08 00:15:59,001 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2025-03-08 00:15:59,001 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) [2025-03-08 00:15:59,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:15:59,046 INFO L93 Difference]: Finished difference Result 124 states and 177 transitions. [2025-03-08 00:15:59,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-08 00:15:59,047 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 [2025-03-08 00:15:59,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:15:59,047 INFO L225 Difference]: With dead ends: 124 [2025-03-08 00:15:59,047 INFO L226 Difference]: Without dead ends: 84 [2025-03-08 00:15:59,048 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 [2025-03-08 00:15:59,048 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 [2025-03-08 00:15:59,048 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] [2025-03-08 00:15:59,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2025-03-08 00:15:59,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 68. [2025-03-08 00:15:59,052 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) [2025-03-08 00:15:59,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2025-03-08 00:15:59,052 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 51 [2025-03-08 00:15:59,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:15:59,053 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2025-03-08 00:15:59,053 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) [2025-03-08 00:15:59,053 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2025-03-08 00:15:59,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-03-08 00:15:59,054 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:15:59,054 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:15:59,054 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2025-03-08 00:15:59,054 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:15:59,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:15:59,054 INFO L85 PathProgramCache]: Analyzing trace with hash -93400052, now seen corresponding path program 1 times [2025-03-08 00:15:59,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:15:59,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331531740] [2025-03-08 00:15:59,054 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:15:59,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:15:59,066 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-03-08 00:15:59,076 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-03-08 00:15:59,078 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:15:59,078 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:15:59,143 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2025-03-08 00:15:59,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:15:59,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331531740] [2025-03-08 00:15:59,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331531740] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-08 00:15:59,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-08 00:15:59,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2025-03-08 00:15:59,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266415485] [2025-03-08 00:15:59,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-08 00:15:59,145 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2025-03-08 00:15:59,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:15:59,145 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2025-03-08 00:15:59,145 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2025-03-08 00:15:59,145 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) [2025-03-08 00:15:59,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:15:59,159 INFO L93 Difference]: Finished difference Result 109 states and 150 transitions. [2025-03-08 00:15:59,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2025-03-08 00:15:59,160 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 [2025-03-08 00:15:59,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:15:59,161 INFO L225 Difference]: With dead ends: 109 [2025-03-08 00:15:59,163 INFO L226 Difference]: Without dead ends: 106 [2025-03-08 00:15:59,164 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 [2025-03-08 00:15:59,164 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 [2025-03-08 00:15:59,164 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] [2025-03-08 00:15:59,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2025-03-08 00:15:59,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 101. [2025-03-08 00:15:59,173 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) [2025-03-08 00:15:59,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 142 transitions. [2025-03-08 00:15:59,175 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 142 transitions. Word has length 51 [2025-03-08 00:15:59,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:15:59,176 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 142 transitions. [2025-03-08 00:15:59,176 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) [2025-03-08 00:15:59,176 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 142 transitions. [2025-03-08 00:15:59,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2025-03-08 00:15:59,178 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:15:59,178 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:15:59,178 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-08 00:15:59,179 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:15:59,179 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:15:59,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1836210387, now seen corresponding path program 1 times [2025-03-08 00:15:59,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:15:59,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723413814] [2025-03-08 00:15:59,179 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:15:59,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:15:59,197 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-03-08 00:15:59,208 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-03-08 00:15:59,210 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:15:59,210 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:15:59,299 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2025-03-08 00:15:59,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:15:59,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723413814] [2025-03-08 00:15:59,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723413814] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 00:15:59,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773609678] [2025-03-08 00:15:59,300 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:15:59,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:15:59,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:15:59,302 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 00:15:59,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-08 00:15:59,350 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 51 statements into 1 equivalence classes. [2025-03-08 00:15:59,374 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 51 of 51 statements. [2025-03-08 00:15:59,374 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:15:59,374 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:15:59,375 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 6 conjuncts are in the unsatisfiable core [2025-03-08 00:15:59,376 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 00:15:59,396 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2025-03-08 00:15:59,396 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 00:15:59,474 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2025-03-08 00:15:59,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773609678] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 00:15:59,475 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 00:15:59,475 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2025-03-08 00:15:59,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216678842] [2025-03-08 00:15:59,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 00:15:59,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2025-03-08 00:15:59,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:15:59,476 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2025-03-08 00:15:59,477 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2025-03-08 00:15:59,477 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) [2025-03-08 00:15:59,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:15:59,635 INFO L93 Difference]: Finished difference Result 356 states and 521 transitions. [2025-03-08 00:15:59,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2025-03-08 00:15:59,636 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 [2025-03-08 00:15:59,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:15:59,637 INFO L225 Difference]: With dead ends: 356 [2025-03-08 00:15:59,637 INFO L226 Difference]: Without dead ends: 262 [2025-03-08 00:15:59,637 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 [2025-03-08 00:15:59,638 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 [2025-03-08 00:15:59,638 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] [2025-03-08 00:15:59,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2025-03-08 00:15:59,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 257. [2025-03-08 00:15:59,651 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) [2025-03-08 00:15:59,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 364 transitions. [2025-03-08 00:15:59,653 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 364 transitions. Word has length 51 [2025-03-08 00:15:59,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:15:59,653 INFO L471 AbstractCegarLoop]: Abstraction has 257 states and 364 transitions. [2025-03-08 00:15:59,653 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) [2025-03-08 00:15:59,653 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 364 transitions. [2025-03-08 00:15:59,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2025-03-08 00:15:59,655 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:15:59,655 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:15:59,663 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2025-03-08 00:15:59,856 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 [2025-03-08 00:15:59,856 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:15:59,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:15:59,856 INFO L85 PathProgramCache]: Analyzing trace with hash 972566893, now seen corresponding path program 2 times [2025-03-08 00:15:59,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:15:59,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555226915] [2025-03-08 00:15:59,857 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 00:15:59,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:15:59,884 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 117 statements into 2 equivalence classes. [2025-03-08 00:15:59,907 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 117 of 117 statements. [2025-03-08 00:15:59,907 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 00:15:59,907 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:16:00,147 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2025-03-08 00:16:00,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:16:00,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555226915] [2025-03-08 00:16:00,148 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555226915] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 00:16:00,148 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247067942] [2025-03-08 00:16:00,148 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 00:16:00,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:16:00,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:16:00,150 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 00:16:00,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-08 00:16:00,215 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 117 statements into 2 equivalence classes. [2025-03-08 00:16:00,267 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 117 of 117 statements. [2025-03-08 00:16:00,267 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 00:16:00,267 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:16:00,269 INFO L256 TraceCheckSpWp]: Trace formula consists of 409 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-08 00:16:00,273 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 00:16:00,308 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2025-03-08 00:16:00,312 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 00:16:00,499 INFO L134 CoverageAnalysis]: Checked inductivity of 525 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 470 trivial. 0 not checked. [2025-03-08 00:16:00,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247067942] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 00:16:00,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 00:16:00,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2025-03-08 00:16:00,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121045596] [2025-03-08 00:16:00,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 00:16:00,500 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2025-03-08 00:16:00,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:16:00,501 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2025-03-08 00:16:00,501 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2025-03-08 00:16:00,501 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) [2025-03-08 00:16:00,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:16:00,832 INFO L93 Difference]: Finished difference Result 818 states and 1199 transitions. [2025-03-08 00:16:00,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2025-03-08 00:16:00,833 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 [2025-03-08 00:16:00,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:16:00,835 INFO L225 Difference]: With dead ends: 818 [2025-03-08 00:16:00,835 INFO L226 Difference]: Without dead ends: 574 [2025-03-08 00:16:00,836 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 [2025-03-08 00:16:00,837 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 [2025-03-08 00:16:00,837 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] [2025-03-08 00:16:00,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2025-03-08 00:16:00,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 569. [2025-03-08 00:16:00,853 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) [2025-03-08 00:16:00,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 808 transitions. [2025-03-08 00:16:00,855 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 808 transitions. Word has length 117 [2025-03-08 00:16:00,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:16:00,855 INFO L471 AbstractCegarLoop]: Abstraction has 569 states and 808 transitions. [2025-03-08 00:16:00,855 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.68) internal successors, (42), 25 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:16:00,856 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 808 transitions. [2025-03-08 00:16:00,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2025-03-08 00:16:00,858 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:16:00,858 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 21, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:16:00,869 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2025-03-08 00:16:01,059 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 [2025-03-08 00:16:01,059 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:16:01,059 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:16:01,059 INFO L85 PathProgramCache]: Analyzing trace with hash 809133549, now seen corresponding path program 3 times [2025-03-08 00:16:01,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:16:01,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878172502] [2025-03-08 00:16:01,060 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 00:16:01,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:16:01,088 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 249 statements into 23 equivalence classes. [2025-03-08 00:16:01,102 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 31 of 249 statements. [2025-03-08 00:16:01,103 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-08 00:16:01,103 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:16:01,318 INFO L134 CoverageAnalysis]: Checked inductivity of 2607 backedges. 64 proven. 169 refuted. 0 times theorem prover too weak. 2374 trivial. 0 not checked. [2025-03-08 00:16:01,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:16:01,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878172502] [2025-03-08 00:16:01,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878172502] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 00:16:01,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506966567] [2025-03-08 00:16:01,319 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 00:16:01,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:16:01,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:16:01,322 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 00:16:01,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-08 00:16:01,424 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 249 statements into 23 equivalence classes. [2025-03-08 00:16:01,443 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 31 of 249 statements. [2025-03-08 00:16:01,443 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-08 00:16:01,443 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:16:01,445 INFO L256 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-03-08 00:16:01,455 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 00:16:01,604 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 13 treesize of output 9 [2025-03-08 00:16:02,182 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 00:16:02,183 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 33 treesize of output 25 [2025-03-08 00:16:02,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2607 backedges. 107 proven. 127 refuted. 0 times theorem prover too weak. 2373 trivial. 0 not checked. [2025-03-08 00:16:02,218 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 00:16:02,486 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 [2025-03-08 00:16:02,489 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 [2025-03-08 00:16:02,495 INFO L134 CoverageAnalysis]: Checked inductivity of 2607 backedges. 64 proven. 148 refuted. 0 times theorem prover too weak. 2395 trivial. 0 not checked. [2025-03-08 00:16:02,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506966567] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 00:16:02,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 00:16:02,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 9] total 22 [2025-03-08 00:16:02,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306127784] [2025-03-08 00:16:02,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 00:16:02,496 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2025-03-08 00:16:02,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:16:02,497 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2025-03-08 00:16:02,497 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2025-03-08 00:16:02,497 INFO L87 Difference]: Start difference. First operand 569 states and 808 transitions. Second operand has 22 states, 22 states have (on average 2.8181818181818183) internal successors, (62), 22 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:16:02,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:16:02,685 INFO L93 Difference]: Finished difference Result 1324 states and 1801 transitions. [2025-03-08 00:16:02,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2025-03-08 00:16:02,685 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.8181818181818183) internal successors, (62), 22 states have internal predecessors, (62), 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 [2025-03-08 00:16:02,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:16:02,689 INFO L225 Difference]: With dead ends: 1324 [2025-03-08 00:16:02,690 INFO L226 Difference]: Without dead ends: 1321 [2025-03-08 00:16:02,691 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 484 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=233, Invalid=579, Unknown=0, NotChecked=0, Total=812 [2025-03-08 00:16:02,691 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 192 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-08 00:16:02,691 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 91 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-08 00:16:02,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1321 states. [2025-03-08 00:16:02,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1321 to 1044. [2025-03-08 00:16:02,733 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) [2025-03-08 00:16:02,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1044 states to 1044 states and 1499 transitions. [2025-03-08 00:16:02,736 INFO L78 Accepts]: Start accepts. Automaton has 1044 states and 1499 transitions. Word has length 249 [2025-03-08 00:16:02,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:16:02,736 INFO L471 AbstractCegarLoop]: Abstraction has 1044 states and 1499 transitions. [2025-03-08 00:16:02,737 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.8181818181818183) internal successors, (62), 22 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:16:02,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1044 states and 1499 transitions. [2025-03-08 00:16:02,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2025-03-08 00:16:02,739 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:16:02,739 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] [2025-03-08 00:16:02,745 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2025-03-08 00:16:02,944 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 [2025-03-08 00:16:02,945 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:16:02,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:16:02,945 INFO L85 PathProgramCache]: Analyzing trace with hash 714936749, now seen corresponding path program 1 times [2025-03-08 00:16:02,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:16:02,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201461295] [2025-03-08 00:16:02,945 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:16:02,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:16:02,990 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 249 statements into 1 equivalence classes. [2025-03-08 00:16:03,018 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 249 of 249 statements. [2025-03-08 00:16:03,019 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:16:03,019 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:16:03,853 INFO L134 CoverageAnalysis]: Checked inductivity of 2607 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2354 trivial. 0 not checked. [2025-03-08 00:16:03,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:16:03,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201461295] [2025-03-08 00:16:03,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201461295] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 00:16:03,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1352573523] [2025-03-08 00:16:03,854 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-08 00:16:03,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:16:03,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:16:03,856 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-08 00:16:03,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-08 00:16:03,953 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 249 statements into 1 equivalence classes. [2025-03-08 00:16:04,041 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 249 of 249 statements. [2025-03-08 00:16:04,042 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-08 00:16:04,042 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:16:04,045 INFO L256 TraceCheckSpWp]: Trace formula consists of 829 conjuncts, 24 conjuncts are in the unsatisfiable core [2025-03-08 00:16:04,053 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 00:16:04,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2607 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2354 trivial. 0 not checked. [2025-03-08 00:16:04,093 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 00:16:04,689 INFO L134 CoverageAnalysis]: Checked inductivity of 2607 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 2354 trivial. 0 not checked. [2025-03-08 00:16:04,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1352573523] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 00:16:04,689 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 00:16:04,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2025-03-08 00:16:04,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383796861] [2025-03-08 00:16:04,690 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 00:16:04,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2025-03-08 00:16:04,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:16:04,691 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2025-03-08 00:16:04,692 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2025-03-08 00:16:04,692 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) [2025-03-08 00:16:05,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:16:05,654 INFO L93 Difference]: Finished difference Result 3524 states and 5058 transitions. [2025-03-08 00:16:05,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2025-03-08 00:16:05,655 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 [2025-03-08 00:16:05,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:16:05,665 INFO L225 Difference]: With dead ends: 3524 [2025-03-08 00:16:05,666 INFO L226 Difference]: Without dead ends: 2505 [2025-03-08 00:16:05,670 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 [2025-03-08 00:16:05,670 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 2158 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 383 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2158 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 383 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2025-03-08 00:16:05,671 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2158 Valid, 292 Invalid, 849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [383 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2025-03-08 00:16:05,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2505 states. [2025-03-08 00:16:05,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2505 to 2196. [2025-03-08 00:16:05,768 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) [2025-03-08 00:16:05,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2196 states to 2196 states and 3155 transitions. [2025-03-08 00:16:05,777 INFO L78 Accepts]: Start accepts. Automaton has 2196 states and 3155 transitions. Word has length 249 [2025-03-08 00:16:05,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:16:05,778 INFO L471 AbstractCegarLoop]: Abstraction has 2196 states and 3155 transitions. [2025-03-08 00:16:05,778 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) [2025-03-08 00:16:05,779 INFO L276 IsEmpty]: Start isEmpty. Operand 2196 states and 3155 transitions. [2025-03-08 00:16:05,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2025-03-08 00:16:05,790 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:16:05,790 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] [2025-03-08 00:16:05,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2025-03-08 00:16:05,990 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 [2025-03-08 00:16:05,991 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:16:05,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:16:05,991 INFO L85 PathProgramCache]: Analyzing trace with hash 328596141, now seen corresponding path program 2 times [2025-03-08 00:16:05,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:16:05,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262611358] [2025-03-08 00:16:05,991 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 00:16:05,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:16:06,052 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 513 statements into 2 equivalence classes. [2025-03-08 00:16:06,117 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 513 of 513 statements. [2025-03-08 00:16:06,117 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 00:16:06,117 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:16:08,547 INFO L134 CoverageAnalysis]: Checked inductivity of 11523 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 10442 trivial. 0 not checked. [2025-03-08 00:16:08,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:16:08,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262611358] [2025-03-08 00:16:08,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262611358] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 00:16:08,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1383081123] [2025-03-08 00:16:08,548 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-08 00:16:08,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:16:08,548 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:16:08,550 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) [2025-03-08 00:16:08,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-08 00:16:08,718 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 513 statements into 2 equivalence classes. [2025-03-08 00:16:08,872 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 513 of 513 statements. [2025-03-08 00:16:08,873 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-08 00:16:08,873 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:16:08,878 INFO L256 TraceCheckSpWp]: Trace formula consists of 1669 conjuncts, 48 conjuncts are in the unsatisfiable core [2025-03-08 00:16:08,883 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 00:16:08,961 INFO L134 CoverageAnalysis]: Checked inductivity of 11523 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 10442 trivial. 0 not checked. [2025-03-08 00:16:08,961 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 00:16:10,873 INFO L134 CoverageAnalysis]: Checked inductivity of 11523 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 10442 trivial. 0 not checked. [2025-03-08 00:16:10,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1383081123] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 00:16:10,873 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 00:16:10,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 97 [2025-03-08 00:16:10,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631532765] [2025-03-08 00:16:10,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 00:16:10,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2025-03-08 00:16:10,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:16:10,876 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2025-03-08 00:16:10,883 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2025-03-08 00:16:10,883 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) [2025-03-08 00:16:15,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:16:15,840 INFO L93 Difference]: Finished difference Result 7244 states and 10410 transitions. [2025-03-08 00:16:15,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2025-03-08 00:16:15,840 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 [2025-03-08 00:16:15,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:16:15,854 INFO L225 Difference]: With dead ends: 7244 [2025-03-08 00:16:15,854 INFO L226 Difference]: Without dead ends: 5097 [2025-03-08 00:16:15,859 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1073 GetRequests, 978 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2025-03-08 00:16:15,860 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 5018 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 871 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5018 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 1830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 871 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2025-03-08 00:16:15,860 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5018 Valid, 595 Invalid, 1830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [871 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2025-03-08 00:16:15,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5097 states. [2025-03-08 00:16:15,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5097 to 4500. [2025-03-08 00:16:15,975 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) [2025-03-08 00:16:15,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4500 states to 4500 states and 6467 transitions. [2025-03-08 00:16:15,984 INFO L78 Accepts]: Start accepts. Automaton has 4500 states and 6467 transitions. Word has length 513 [2025-03-08 00:16:15,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:16:15,984 INFO L471 AbstractCegarLoop]: Abstraction has 4500 states and 6467 transitions. [2025-03-08 00:16:15,985 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) [2025-03-08 00:16:15,985 INFO L276 IsEmpty]: Start isEmpty. Operand 4500 states and 6467 transitions. [2025-03-08 00:16:16,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1042 [2025-03-08 00:16:16,012 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:16:16,012 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] [2025-03-08 00:16:16,021 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-08 00:16:16,216 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 [2025-03-08 00:16:16,216 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:16:16,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:16:16,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1834601645, now seen corresponding path program 3 times [2025-03-08 00:16:16,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:16:16,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857431098] [2025-03-08 00:16:16,217 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 00:16:16,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:16:16,380 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 1041 statements into 95 equivalence classes. [2025-03-08 00:16:16,389 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 31 of 1041 statements. [2025-03-08 00:16:16,389 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-08 00:16:16,389 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:16:16,644 INFO L134 CoverageAnalysis]: Checked inductivity of 48363 backedges. 280 proven. 745 refuted. 0 times theorem prover too weak. 47338 trivial. 0 not checked. [2025-03-08 00:16:16,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:16:16,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857431098] [2025-03-08 00:16:16,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857431098] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 00:16:16,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [847511481] [2025-03-08 00:16:16,645 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2025-03-08 00:16:16,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:16:16,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:16:16,647 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) [2025-03-08 00:16:16,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-08 00:16:16,929 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 partitioned 1041 statements into 95 equivalence classes. [2025-03-08 00:16:16,943 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) and asserted 31 of 1041 statements. [2025-03-08 00:16:16,943 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2025-03-08 00:16:16,943 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:16:16,946 INFO L256 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 16 conjuncts are in the unsatisfiable core [2025-03-08 00:16:16,955 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-08 00:16:16,962 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 1 [2025-03-08 00:16:17,752 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2025-03-08 00:16:17,752 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 15 [2025-03-08 00:16:17,797 INFO L134 CoverageAnalysis]: Checked inductivity of 48363 backedges. 653 proven. 373 refuted. 0 times theorem prover too weak. 47337 trivial. 0 not checked. [2025-03-08 00:16:17,797 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-08 00:16:18,610 INFO L134 CoverageAnalysis]: Checked inductivity of 48363 backedges. 280 proven. 652 refuted. 0 times theorem prover too weak. 47431 trivial. 0 not checked. [2025-03-08 00:16:18,611 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [847511481] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-08 00:16:18,611 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-08 00:16:18,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 10] total 24 [2025-03-08 00:16:18,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472776049] [2025-03-08 00:16:18,612 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-08 00:16:18,613 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2025-03-08 00:16:18,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-08 00:16:18,613 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2025-03-08 00:16:18,614 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=445, Unknown=0, NotChecked=0, Total=552 [2025-03-08 00:16:18,614 INFO L87 Difference]: Start difference. First operand 4500 states and 6467 transitions. Second operand has 24 states, 24 states have (on average 2.625) internal successors, (63), 24 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:16:22,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2025-03-08 00:16:23,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-08 00:16:23,103 INFO L93 Difference]: Finished difference Result 5248 states and 7307 transitions. [2025-03-08 00:16:23,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2025-03-08 00:16:23,104 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.625) internal successors, (63), 24 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1041 [2025-03-08 00:16:23,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-08 00:16:23,118 INFO L225 Difference]: With dead ends: 5248 [2025-03-08 00:16:23,118 INFO L226 Difference]: Without dead ends: 5245 [2025-03-08 00:16:23,120 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2111 GetRequests, 2070 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=361, Invalid=1121, Unknown=0, NotChecked=0, Total=1482 [2025-03-08 00:16:23,120 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 231 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 53 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2025-03-08 00:16:23,121 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 117 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 196 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2025-03-08 00:16:23,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5245 states. [2025-03-08 00:16:23,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5245 to 4489. [2025-03-08 00:16:23,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4489 states, 4488 states have (on average 1.4373885918003566) internal successors, (6451), 4488 states have internal predecessors, (6451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:16:23,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4489 states to 4489 states and 6451 transitions. [2025-03-08 00:16:23,230 INFO L78 Accepts]: Start accepts. Automaton has 4489 states and 6451 transitions. Word has length 1041 [2025-03-08 00:16:23,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-08 00:16:23,231 INFO L471 AbstractCegarLoop]: Abstraction has 4489 states and 6451 transitions. [2025-03-08 00:16:23,231 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.625) internal successors, (63), 24 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-08 00:16:23,232 INFO L276 IsEmpty]: Start isEmpty. Operand 4489 states and 6451 transitions. [2025-03-08 00:16:23,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1042 [2025-03-08 00:16:23,242 INFO L210 NwaCegarLoop]: Found error trace [2025-03-08 00:16:23,242 INFO L218 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 93, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-08 00:16:23,250 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-08 00:16:23,446 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 [2025-03-08 00:16:23,446 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-08 00:16:23,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-08 00:16:23,447 INFO L85 PathProgramCache]: Analyzing trace with hash -2130910325, now seen corresponding path program 4 times [2025-03-08 00:16:23,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-08 00:16:23,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437665250] [2025-03-08 00:16:23,447 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 00:16:23,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-08 00:16:23,540 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 1041 statements into 2 equivalence classes. [2025-03-08 00:16:23,945 INFO L111 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) and asserted 1041 of 1041 statements. [2025-03-08 00:16:23,945 INFO L114 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 2 check-sat command(s) [2025-03-08 00:16:23,945 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-08 00:16:32,347 INFO L134 CoverageAnalysis]: Checked inductivity of 48363 backedges. 0 proven. 13207 refuted. 0 times theorem prover too weak. 35156 trivial. 0 not checked. [2025-03-08 00:16:32,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-08 00:16:32,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437665250] [2025-03-08 00:16:32,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437665250] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-08 00:16:32,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560617554] [2025-03-08 00:16:32,348 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2025-03-08 00:16:32,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-08 00:16:32,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-08 00:16:32,350 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) [2025-03-08 00:16:32,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-08 00:16:32,668 INFO L108 AnnotateAndAsserter]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST partitioned 1041 statements into 2 equivalence classes.