./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound5.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 798a7b37 Calling Ultimate with: /root/.sdkman/candidates/java/21.0.5-tem/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound5.c -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 3f9b33d2a8120d9ea8a3a6c5d650c2a90b549ffb583b3e9890b411aeb4530efd --- Real Ultimate output --- This is Ultimate 0.3.0-?-798a7b3-m [2025-03-03 13:50:18,752 INFO L188 SettingsManager]: Resetting all preferences to default values... [2025-03-03 13:50:18,803 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2025-03-03 13:50:18,812 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2025-03-03 13:50:18,812 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2025-03-03 13:50:18,826 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2025-03-03 13:50:18,827 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2025-03-03 13:50:18,827 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2025-03-03 13:50:18,827 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2025-03-03 13:50:18,827 INFO L153 SettingsManager]: * Use memory slicer=true [2025-03-03 13:50:18,827 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2025-03-03 13:50:18,827 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2025-03-03 13:50:18,827 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2025-03-03 13:50:18,827 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2025-03-03 13:50:18,827 INFO L153 SettingsManager]: * Use SBE=true [2025-03-03 13:50:18,827 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2025-03-03 13:50:18,827 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2025-03-03 13:50:18,827 INFO L153 SettingsManager]: * sizeof long=4 [2025-03-03 13:50:18,828 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2025-03-03 13:50:18,828 INFO L153 SettingsManager]: * sizeof POINTER=4 [2025-03-03 13:50:18,828 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2025-03-03 13:50:18,828 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2025-03-03 13:50:18,828 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2025-03-03 13:50:18,828 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2025-03-03 13:50:18,828 INFO L153 SettingsManager]: * sizeof long double=12 [2025-03-03 13:50:18,828 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2025-03-03 13:50:18,828 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2025-03-03 13:50:18,828 INFO L153 SettingsManager]: * Use constant arrays=true [2025-03-03 13:50:18,828 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2025-03-03 13:50:18,828 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2025-03-03 13:50:18,828 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2025-03-03 13:50:18,828 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2025-03-03 13:50:18,828 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 13:50:18,828 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2025-03-03 13:50:18,831 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2025-03-03 13:50:18,831 INFO L153 SettingsManager]: * Compute procedure contracts=false [2025-03-03 13:50:18,831 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2025-03-03 13:50:18,831 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2025-03-03 13:50:18,831 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2025-03-03 13:50:18,831 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2025-03-03 13:50:18,831 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2025-03-03 13:50:18,831 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2025-03-03 13:50:18,831 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2025-03-03 13:50:18,831 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 -> 3f9b33d2a8120d9ea8a3a6c5d650c2a90b549ffb583b3e9890b411aeb4530efd [2025-03-03 13:50:19,063 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2025-03-03 13:50:19,071 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2025-03-03 13:50:19,072 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2025-03-03 13:50:19,073 INFO L270 PluginConnector]: Initializing CDTParser... [2025-03-03 13:50:19,075 INFO L274 PluginConnector]: CDTParser initialized [2025-03-03 13:50:19,076 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound5.c [2025-03-03 13:50:20,187 INFO L533 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d61ef40d/5c7dd5e4248a4a1897fa91816d8d12b8/FLAGee0ebebea [2025-03-03 13:50:20,404 INFO L384 CDTParser]: Found 1 translation units. [2025-03-03 13:50:20,410 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_valuebound5.c [2025-03-03 13:50:20,436 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d61ef40d/5c7dd5e4248a4a1897fa91816d8d12b8/FLAGee0ebebea [2025-03-03 13:50:20,754 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d61ef40d/5c7dd5e4248a4a1897fa91816d8d12b8 [2025-03-03 13:50:20,755 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2025-03-03 13:50:20,757 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2025-03-03 13:50:20,758 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2025-03-03 13:50:20,758 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2025-03-03 13:50:20,761 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2025-03-03 13:50:20,761 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 01:50:20" (1/1) ... [2025-03-03 13:50:20,762 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10719c3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:50:20, skipping insertion in model container [2025-03-03 13:50:20,762 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.03 01:50:20" (1/1) ... [2025-03-03 13:50:20,771 INFO L175 MainTranslator]: Built tables and reachable declarations [2025-03-03 13:50:20,857 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/nla-digbench-scaling/egcd-ll_valuebound5.c[489,502] [2025-03-03 13:50:20,874 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 13:50:20,882 INFO L200 MainTranslator]: Completed pre-run [2025-03-03 13:50:20,888 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/nla-digbench-scaling/egcd-ll_valuebound5.c[489,502] [2025-03-03 13:50:20,893 INFO L210 PostProcessor]: Analyzing one entry point: main [2025-03-03 13:50:20,902 INFO L204 MainTranslator]: Completed translation [2025-03-03 13:50:20,903 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:50:20 WrapperNode [2025-03-03 13:50:20,903 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2025-03-03 13:50:20,904 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2025-03-03 13:50:20,904 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2025-03-03 13:50:20,904 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2025-03-03 13:50:20,907 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:50:20" (1/1) ... [2025-03-03 13:50:20,911 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:50:20" (1/1) ... [2025-03-03 13:50:20,920 INFO L138 Inliner]: procedures = 14, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2025-03-03 13:50:20,920 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2025-03-03 13:50:20,920 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2025-03-03 13:50:20,920 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2025-03-03 13:50:20,920 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2025-03-03 13:50:20,925 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:50:20" (1/1) ... [2025-03-03 13:50:20,925 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:50:20" (1/1) ... [2025-03-03 13:50:20,926 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:50:20" (1/1) ... [2025-03-03 13:50:20,932 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2025-03-03 13:50:20,933 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:50:20" (1/1) ... [2025-03-03 13:50:20,933 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:50:20" (1/1) ... [2025-03-03 13:50:20,935 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:50:20" (1/1) ... [2025-03-03 13:50:20,935 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:50:20" (1/1) ... [2025-03-03 13:50:20,936 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:50:20" (1/1) ... [2025-03-03 13:50:20,936 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:50:20" (1/1) ... [2025-03-03 13:50:20,937 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2025-03-03 13:50:20,937 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2025-03-03 13:50:20,937 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2025-03-03 13:50:20,937 INFO L274 PluginConnector]: IcfgBuilder initialized [2025-03-03 13:50:20,938 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:50:20" (1/1) ... [2025-03-03 13:50:20,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2025-03-03 13:50:20,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:50:20,958 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2025-03-03 13:50:20,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2025-03-03 13:50:20,975 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2025-03-03 13:50:20,975 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2025-03-03 13:50:20,975 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2025-03-03 13:50:20,975 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2025-03-03 13:50:20,975 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2025-03-03 13:50:20,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2025-03-03 13:50:20,975 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2025-03-03 13:50:20,975 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2025-03-03 13:50:21,009 INFO L256 CfgBuilder]: Building ICFG [2025-03-03 13:50:21,011 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2025-03-03 13:50:21,129 INFO L? ?]: Removed 5 outVars from TransFormulas that were not future-live. [2025-03-03 13:50:21,129 INFO L307 CfgBuilder]: Performing block encoding [2025-03-03 13:50:21,138 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2025-03-03 13:50:21,140 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2025-03-03 13:50:21,140 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 01:50:21 BoogieIcfgContainer [2025-03-03 13:50:21,140 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2025-03-03 13:50:21,143 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2025-03-03 13:50:21,143 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2025-03-03 13:50:21,146 INFO L274 PluginConnector]: TraceAbstraction initialized [2025-03-03 13:50:21,147 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.03 01:50:20" (1/3) ... [2025-03-03 13:50:21,147 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9c058be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 01:50:21, skipping insertion in model container [2025-03-03 13:50:21,147 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.03 01:50:20" (2/3) ... [2025-03-03 13:50:21,148 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9c058be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.03 01:50:21, skipping insertion in model container [2025-03-03 13:50:21,148 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 01:50:21" (3/3) ... [2025-03-03 13:50:21,149 INFO L128 eAbstractionObserver]: Analyzing ICFG egcd-ll_valuebound5.c [2025-03-03 13:50:21,161 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2025-03-03 13:50:21,163 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG egcd-ll_valuebound5.c that has 3 procedures, 31 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2025-03-03 13:50:21,204 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2025-03-03 13:50:21,214 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;@7c9ca1a0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2025-03-03 13:50:21,215 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2025-03-03 13:50:21,219 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2025-03-03 13:50:21,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-03-03 13:50:21,223 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:50:21,223 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 13:50:21,223 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:50:21,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:50:21,226 INFO L85 PathProgramCache]: Analyzing trace with hash 296957627, now seen corresponding path program 1 times [2025-03-03 13:50:21,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:50:21,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193772539] [2025-03-03 13:50:21,231 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:50:21,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:50:21,278 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-03 13:50:21,288 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-03 13:50:21,289 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:50:21,289 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:50:21,321 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-03 13:50:21,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:50:21,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193772539] [2025-03-03 13:50:21,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193772539] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:50:21,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426779788] [2025-03-03 13:50:21,327 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:50:21,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:50:21,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:50:21,331 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 13:50:21,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2025-03-03 13:50:21,369 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-03 13:50:21,392 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-03 13:50:21,393 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:50:21,393 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:50:21,395 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 1 conjuncts are in the unsatisfiable core [2025-03-03 13:50:21,398 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:50:21,406 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2025-03-03 13:50:21,407 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 13:50:21,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426779788] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 13:50:21,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 13:50:21,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2025-03-03 13:50:21,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959210358] [2025-03-03 13:50:21,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 13:50:21,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2025-03-03 13:50:21,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:50:21,427 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2025-03-03 13:50:21,427 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-03 13:50:21,429 INFO L87 Difference]: Start difference. First operand has 31 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 17 states have internal predecessors, (22), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2025-03-03 13:50:21,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:50:21,447 INFO L93 Difference]: Finished difference Result 59 states and 95 transitions. [2025-03-03 13:50:21,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2025-03-03 13:50:21,449 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 28 [2025-03-03 13:50:21,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:50:21,454 INFO L225 Difference]: With dead ends: 59 [2025-03-03 13:50:21,454 INFO L226 Difference]: Without dead ends: 27 [2025-03-03 13:50:21,458 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2025-03-03 13:50:21,460 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 13:50:21,460 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 13:50:21,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2025-03-03 13:50:21,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2025-03-03 13:50:21,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2025-03-03 13:50:21,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 37 transitions. [2025-03-03 13:50:21,482 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 37 transitions. Word has length 28 [2025-03-03 13:50:21,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:50:21,482 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 37 transitions. [2025-03-03 13:50:21,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2025-03-03 13:50:21,482 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 37 transitions. [2025-03-03 13:50:21,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2025-03-03 13:50:21,483 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:50:21,483 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 13:50:21,489 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2025-03-03 13:50:21,685 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2025-03-03 13:50:21,685 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:50:21,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:50:21,686 INFO L85 PathProgramCache]: Analyzing trace with hash 682285849, now seen corresponding path program 1 times [2025-03-03 13:50:21,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:50:21,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079652053] [2025-03-03 13:50:21,686 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:50:21,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:50:21,691 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-03 13:50:21,709 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-03 13:50:21,709 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:50:21,709 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-03 13:50:21,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [37197920] [2025-03-03 13:50:21,712 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:50:21,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:50:21,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:50:21,714 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 13:50:21,715 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2025-03-03 13:50:21,738 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 28 statements into 1 equivalence classes. [2025-03-03 13:50:21,758 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 28 of 28 statements. [2025-03-03 13:50:21,758 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:50:21,758 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:50:21,759 INFO L256 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-03 13:50:21,761 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:50:21,825 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-03 13:50:21,825 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 13:50:21,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:50:21,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079652053] [2025-03-03 13:50:21,826 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-03 13:50:21,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37197920] [2025-03-03 13:50:21,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [37197920] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 13:50:21,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 13:50:21,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 13:50:21,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143181891] [2025-03-03 13:50:21,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 13:50:21,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 13:50:21,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:50:21,827 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 13:50:21,827 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 13:50:21,827 INFO L87 Difference]: Start difference. First operand 27 states and 37 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-03-03 13:50:21,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:50:21,884 INFO L93 Difference]: Finished difference Result 42 states and 59 transitions. [2025-03-03 13:50:21,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 13:50:21,884 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 28 [2025-03-03 13:50:21,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:50:21,885 INFO L225 Difference]: With dead ends: 42 [2025-03-03 13:50:21,885 INFO L226 Difference]: Without dead ends: 40 [2025-03-03 13:50:21,885 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-03 13:50:21,885 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 5 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 13:50:21,886 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 117 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 13:50:21,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2025-03-03 13:50:21,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2025-03-03 13:50:21,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 18 states have (on average 1.2777777777777777) internal successors, (23), 20 states have internal predecessors, (23), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2025-03-03 13:50:21,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 56 transitions. [2025-03-03 13:50:21,895 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 56 transitions. Word has length 28 [2025-03-03 13:50:21,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:50:21,896 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 56 transitions. [2025-03-03 13:50:21,896 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2025-03-03 13:50:21,896 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 56 transitions. [2025-03-03 13:50:21,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2025-03-03 13:50:21,896 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:50:21,896 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 13:50:21,904 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2025-03-03 13:50:22,101 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,SelfDestructingSolverStorable1 [2025-03-03 13:50:22,101 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:50:22,101 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:50:22,102 INFO L85 PathProgramCache]: Analyzing trace with hash -806119642, now seen corresponding path program 1 times [2025-03-03 13:50:22,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:50:22,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254727737] [2025-03-03 13:50:22,102 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:50:22,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:50:22,107 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-03 13:50:22,119 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-03 13:50:22,119 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:50:22,119 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-03 13:50:22,120 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1395367994] [2025-03-03 13:50:22,120 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:50:22,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:50:22,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:50:22,122 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 13:50:22,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2025-03-03 13:50:22,146 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 33 statements into 1 equivalence classes. [2025-03-03 13:50:22,164 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 33 of 33 statements. [2025-03-03 13:50:22,165 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:50:22,165 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:50:22,167 INFO L256 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 12 conjuncts are in the unsatisfiable core [2025-03-03 13:50:22,169 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:50:22,231 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2025-03-03 13:50:22,231 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 13:50:22,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:50:22,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254727737] [2025-03-03 13:50:22,231 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-03 13:50:22,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395367994] [2025-03-03 13:50:22,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395367994] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 13:50:22,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 13:50:22,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 13:50:22,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465218381] [2025-03-03 13:50:22,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 13:50:22,232 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 13:50:22,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:50:22,232 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 13:50:22,232 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 13:50:22,232 INFO L87 Difference]: Start difference. First operand 39 states and 56 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-03 13:50:22,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:50:22,300 INFO L93 Difference]: Finished difference Result 62 states and 94 transitions. [2025-03-03 13:50:22,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 13:50:22,300 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 33 [2025-03-03 13:50:22,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:50:22,308 INFO L225 Difference]: With dead ends: 62 [2025-03-03 13:50:22,308 INFO L226 Difference]: Without dead ends: 60 [2025-03-03 13:50:22,308 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-03 13:50:22,309 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 6 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 13:50:22,311 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 119 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 13:50:22,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2025-03-03 13:50:22,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 53. [2025-03-03 13:50:22,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 25 states have (on average 1.36) internal successors, (34), 27 states have internal predecessors, (34), 23 states have call successors, (23), 4 states have call predecessors, (23), 4 states have return successors, (22), 21 states have call predecessors, (22), 22 states have call successors, (22) [2025-03-03 13:50:22,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 79 transitions. [2025-03-03 13:50:22,328 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 79 transitions. Word has length 33 [2025-03-03 13:50:22,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:50:22,328 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 79 transitions. [2025-03-03 13:50:22,328 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2025-03-03 13:50:22,329 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 79 transitions. [2025-03-03 13:50:22,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2025-03-03 13:50:22,329 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:50:22,329 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 13:50:22,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2025-03-03 13:50:22,529 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:50:22,530 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:50:22,531 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:50:22,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1523729273, now seen corresponding path program 1 times [2025-03-03 13:50:22,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:50:22,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669887113] [2025-03-03 13:50:22,531 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:50:22,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:50:22,543 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-03 13:50:22,567 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-03 13:50:22,570 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:50:22,570 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-03 13:50:22,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [735728951] [2025-03-03 13:50:22,573 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:50:22,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:50:22,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:50:22,575 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 13:50:22,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2025-03-03 13:50:22,601 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 38 statements into 1 equivalence classes. [2025-03-03 13:50:22,626 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 38 of 38 statements. [2025-03-03 13:50:22,626 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:50:22,626 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:50:22,627 INFO L256 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 9 conjuncts are in the unsatisfiable core [2025-03-03 13:50:22,628 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:50:22,671 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2025-03-03 13:50:22,672 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 13:50:22,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:50:22,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669887113] [2025-03-03 13:50:22,672 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-03 13:50:22,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [735728951] [2025-03-03 13:50:22,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [735728951] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 13:50:22,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 13:50:22,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 13:50:22,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314941859] [2025-03-03 13:50:22,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 13:50:22,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 13:50:22,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:50:22,673 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 13:50:22,673 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 13:50:22,673 INFO L87 Difference]: Start difference. First operand 53 states and 79 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2025-03-03 13:50:22,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:50:22,726 INFO L93 Difference]: Finished difference Result 60 states and 85 transitions. [2025-03-03 13:50:22,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 13:50:22,727 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 38 [2025-03-03 13:50:22,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:50:22,727 INFO L225 Difference]: With dead ends: 60 [2025-03-03 13:50:22,728 INFO L226 Difference]: Without dead ends: 56 [2025-03-03 13:50:22,729 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-03 13:50:22,729 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 6 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 13:50:22,729 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 118 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 13:50:22,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2025-03-03 13:50:22,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2025-03-03 13:50:22,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 30 states have internal predecessors, (37), 22 states have call successors, (22), 5 states have call predecessors, (22), 5 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-03 13:50:22,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 79 transitions. [2025-03-03 13:50:22,739 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 79 transitions. Word has length 38 [2025-03-03 13:50:22,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:50:22,739 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 79 transitions. [2025-03-03 13:50:22,739 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2025-03-03 13:50:22,739 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 79 transitions. [2025-03-03 13:50:22,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2025-03-03 13:50:22,740 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:50:22,740 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 13:50:22,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2025-03-03 13:50:22,943 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:50:22,943 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:50:22,943 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:50:22,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1024589713, now seen corresponding path program 1 times [2025-03-03 13:50:22,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:50:22,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087594546] [2025-03-03 13:50:22,944 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:50:22,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:50:22,949 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 44 statements into 1 equivalence classes. [2025-03-03 13:50:22,964 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 44 of 44 statements. [2025-03-03 13:50:22,964 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:50:22,964 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:50:23,076 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-03-03 13:50:23,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:50:23,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087594546] [2025-03-03 13:50:23,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087594546] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 13:50:23,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 13:50:23,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 13:50:23,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500492150] [2025-03-03 13:50:23,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 13:50:23,077 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 13:50:23,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:50:23,078 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 13:50:23,078 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 13:50:23,078 INFO L87 Difference]: Start difference. First operand 56 states and 79 transitions. Second operand has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2025-03-03 13:50:23,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:50:23,106 INFO L93 Difference]: Finished difference Result 62 states and 84 transitions. [2025-03-03 13:50:23,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 13:50:23,107 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 44 [2025-03-03 13:50:23,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:50:23,108 INFO L225 Difference]: With dead ends: 62 [2025-03-03 13:50:23,108 INFO L226 Difference]: Without dead ends: 60 [2025-03-03 13:50:23,108 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-03 13:50:23,108 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 3 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 13:50:23,109 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 128 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 13:50:23,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2025-03-03 13:50:23,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2025-03-03 13:50:23,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 31 states have (on average 1.2903225806451613) internal successors, (40), 33 states have internal predecessors, (40), 22 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2025-03-03 13:50:23,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 82 transitions. [2025-03-03 13:50:23,116 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 82 transitions. Word has length 44 [2025-03-03 13:50:23,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:50:23,116 INFO L471 AbstractCegarLoop]: Abstraction has 60 states and 82 transitions. [2025-03-03 13:50:23,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2025-03-03 13:50:23,117 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 82 transitions. [2025-03-03 13:50:23,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2025-03-03 13:50:23,117 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:50:23,117 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 13:50:23,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2025-03-03 13:50:23,117 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:50:23,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:50:23,118 INFO L85 PathProgramCache]: Analyzing trace with hash 1697005566, now seen corresponding path program 1 times [2025-03-03 13:50:23,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:50:23,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73396850] [2025-03-03 13:50:23,118 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:50:23,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:50:23,122 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-03-03 13:50:23,133 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-03-03 13:50:23,133 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:50:23,133 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-03 13:50:23,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [214340763] [2025-03-03 13:50:23,134 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:50:23,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:50:23,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:50:23,138 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 13:50:23,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2025-03-03 13:50:23,162 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 45 statements into 1 equivalence classes. [2025-03-03 13:50:23,178 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 45 of 45 statements. [2025-03-03 13:50:23,178 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:50:23,179 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:50:23,179 INFO L256 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-03 13:50:23,180 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:50:23,246 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2025-03-03 13:50:23,247 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 13:50:23,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:50:23,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73396850] [2025-03-03 13:50:23,247 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-03 13:50:23,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [214340763] [2025-03-03 13:50:23,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [214340763] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 13:50:23,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2025-03-03 13:50:23,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2025-03-03 13:50:23,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733099702] [2025-03-03 13:50:23,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 13:50:23,248 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 13:50:23,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:50:23,248 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 13:50:23,248 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2025-03-03 13:50:23,248 INFO L87 Difference]: Start difference. First operand 60 states and 82 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-03 13:50:23,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:50:23,287 INFO L93 Difference]: Finished difference Result 76 states and 100 transitions. [2025-03-03 13:50:23,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 13:50:23,288 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 45 [2025-03-03 13:50:23,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:50:23,288 INFO L225 Difference]: With dead ends: 76 [2025-03-03 13:50:23,289 INFO L226 Difference]: Without dead ends: 74 [2025-03-03 13:50:23,290 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2025-03-03 13:50:23,290 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 4 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 13:50:23,290 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 117 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 13:50:23,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2025-03-03 13:50:23,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 71. [2025-03-03 13:50:23,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 40 states have internal predecessors, (46), 25 states have call successors, (25), 8 states have call predecessors, (25), 8 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2025-03-03 13:50:23,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 94 transitions. [2025-03-03 13:50:23,305 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 94 transitions. Word has length 45 [2025-03-03 13:50:23,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:50:23,305 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 94 transitions. [2025-03-03 13:50:23,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-03 13:50:23,305 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 94 transitions. [2025-03-03 13:50:23,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2025-03-03 13:50:23,306 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:50:23,306 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 13:50:23,313 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2025-03-03 13:50:23,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:50:23,510 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:50:23,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:50:23,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1630456210, now seen corresponding path program 1 times [2025-03-03 13:50:23,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:50:23,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160425970] [2025-03-03 13:50:23,511 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:50:23,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:50:23,515 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-03-03 13:50:23,520 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-03-03 13:50:23,520 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:50:23,520 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:50:23,742 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2025-03-03 13:50:23,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:50:23,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160425970] [2025-03-03 13:50:23,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160425970] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:50:23,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121272331] [2025-03-03 13:50:23,744 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:50:23,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:50:23,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:50:23,749 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 13:50:23,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2025-03-03 13:50:23,771 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 49 statements into 1 equivalence classes. [2025-03-03 13:50:23,786 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 49 of 49 statements. [2025-03-03 13:50:23,786 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:50:23,786 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:50:23,787 INFO L256 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 11 conjuncts are in the unsatisfiable core [2025-03-03 13:50:23,788 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:50:23,872 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2025-03-03 13:50:23,872 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2025-03-03 13:50:23,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121272331] provided 1 perfect and 0 imperfect interpolant sequences [2025-03-03 13:50:23,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 13:50:23,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2025-03-03 13:50:23,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197427980] [2025-03-03 13:50:23,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 13:50:23,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2025-03-03 13:50:23,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:50:23,874 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2025-03-03 13:50:23,874 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2025-03-03 13:50:23,875 INFO L87 Difference]: Start difference. First operand 71 states and 94 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-03 13:50:23,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:50:23,949 INFO L93 Difference]: Finished difference Result 84 states and 106 transitions. [2025-03-03 13:50:23,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2025-03-03 13:50:23,950 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 49 [2025-03-03 13:50:23,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:50:23,951 INFO L225 Difference]: With dead ends: 84 [2025-03-03 13:50:23,952 INFO L226 Difference]: Without dead ends: 80 [2025-03-03 13:50:23,952 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2025-03-03 13:50:23,952 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 6 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 13:50:23,953 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 142 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:50:23,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2025-03-03 13:50:23,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2025-03-03 13:50:23,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 43 states have (on average 1.186046511627907) internal successors, (51), 46 states have internal predecessors, (51), 25 states have call successors, (25), 10 states have call predecessors, (25), 10 states have return successors, (23), 22 states have call predecessors, (23), 23 states have call successors, (23) [2025-03-03 13:50:23,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 99 transitions. [2025-03-03 13:50:23,966 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 99 transitions. Word has length 49 [2025-03-03 13:50:23,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:50:23,967 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 99 transitions. [2025-03-03 13:50:23,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2025-03-03 13:50:23,967 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 99 transitions. [2025-03-03 13:50:23,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2025-03-03 13:50:23,968 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:50:23,968 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 13:50:23,975 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2025-03-03 13:50:24,170 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:50:24,170 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:50:24,170 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:50:24,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1601374274, now seen corresponding path program 1 times [2025-03-03 13:50:24,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:50:24,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350213200] [2025-03-03 13:50:24,170 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:50:24,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:50:24,180 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-03-03 13:50:24,198 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-03-03 13:50:24,199 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:50:24,199 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-03 13:50:24,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1614181386] [2025-03-03 13:50:24,200 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:50:24,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:50:24,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:50:24,202 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 13:50:24,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2025-03-03 13:50:24,224 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 50 statements into 1 equivalence classes. [2025-03-03 13:50:24,237 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 50 of 50 statements. [2025-03-03 13:50:24,237 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:50:24,237 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:50:24,238 INFO L256 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 32 conjuncts are in the unsatisfiable core [2025-03-03 13:50:24,240 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:50:24,458 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 17 proven. 5 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2025-03-03 13:50:24,460 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:50:24,580 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2025-03-03 13:50:24,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:50:24,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350213200] [2025-03-03 13:50:24,580 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-03 13:50:24,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614181386] [2025-03-03 13:50:24,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614181386] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:50:24,580 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-03 13:50:24,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6] total 12 [2025-03-03 13:50:24,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965853658] [2025-03-03 13:50:24,581 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-03 13:50:24,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2025-03-03 13:50:24,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:50:24,581 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2025-03-03 13:50:24,581 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2025-03-03 13:50:24,582 INFO L87 Difference]: Start difference. First operand 79 states and 99 transitions. Second operand has 12 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 6 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 7 states have call predecessors, (15), 6 states have call successors, (15) [2025-03-03 13:50:24,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:50:24,880 INFO L93 Difference]: Finished difference Result 124 states and 174 transitions. [2025-03-03 13:50:24,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2025-03-03 13:50:24,880 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 6 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 7 states have call predecessors, (15), 6 states have call successors, (15) Word has length 50 [2025-03-03 13:50:24,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:50:24,881 INFO L225 Difference]: With dead ends: 124 [2025-03-03 13:50:24,881 INFO L226 Difference]: Without dead ends: 122 [2025-03-03 13:50:24,882 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 86 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2025-03-03 13:50:24,882 INFO L435 NwaCegarLoop]: 31 mSDtfsCounter, 41 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2025-03-03 13:50:24,882 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 220 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2025-03-03 13:50:24,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2025-03-03 13:50:24,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 102. [2025-03-03 13:50:24,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 55 states have (on average 1.2545454545454546) internal successors, (69), 58 states have internal predecessors, (69), 34 states have call successors, (34), 12 states have call predecessors, (34), 12 states have return successors, (32), 31 states have call predecessors, (32), 32 states have call successors, (32) [2025-03-03 13:50:24,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 135 transitions. [2025-03-03 13:50:24,910 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 135 transitions. Word has length 50 [2025-03-03 13:50:24,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:50:24,911 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 135 transitions. [2025-03-03 13:50:24,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 6 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 7 states have call predecessors, (15), 6 states have call successors, (15) [2025-03-03 13:50:24,911 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 135 transitions. [2025-03-03 13:50:24,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2025-03-03 13:50:24,912 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:50:24,912 INFO L218 NwaCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 13:50:24,917 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2025-03-03 13:50:25,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:50:25,112 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:50:25,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:50:25,113 INFO L85 PathProgramCache]: Analyzing trace with hash -750050, now seen corresponding path program 2 times [2025-03-03 13:50:25,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:50:25,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885468527] [2025-03-03 13:50:25,113 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 13:50:25,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:50:25,121 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 55 statements into 2 equivalence classes. [2025-03-03 13:50:25,132 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 55 of 55 statements. [2025-03-03 13:50:25,132 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 13:50:25,133 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-03 13:50:25,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [926996947] [2025-03-03 13:50:25,133 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2025-03-03 13:50:25,133 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:50:25,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:50:25,135 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 13:50:25,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2025-03-03 13:50:25,155 INFO L108 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 partitioned 55 statements into 2 equivalence classes. [2025-03-03 13:50:25,169 INFO L111 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) and asserted 55 of 55 statements. [2025-03-03 13:50:25,169 INFO L114 AnnotateAndAsserter]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2025-03-03 13:50:25,169 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:50:25,170 INFO L256 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 21 conjuncts are in the unsatisfiable core [2025-03-03 13:50:25,171 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:50:25,287 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2025-03-03 13:50:25,287 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:50:25,354 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2025-03-03 13:50:25,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:50:25,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885468527] [2025-03-03 13:50:25,354 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-03 13:50:25,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926996947] [2025-03-03 13:50:25,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926996947] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:50:25,354 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2025-03-03 13:50:25,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2025-03-03 13:50:25,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797868410] [2025-03-03 13:50:25,355 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2025-03-03 13:50:25,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2025-03-03 13:50:25,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:50:25,355 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2025-03-03 13:50:25,355 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-03-03 13:50:25,356 INFO L87 Difference]: Start difference. First operand 102 states and 135 transitions. Second operand has 8 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 5 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2025-03-03 13:50:25,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:50:25,541 INFO L93 Difference]: Finished difference Result 115 states and 153 transitions. [2025-03-03 13:50:25,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2025-03-03 13:50:25,542 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 5 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 55 [2025-03-03 13:50:25,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:50:25,543 INFO L225 Difference]: With dead ends: 115 [2025-03-03 13:50:25,543 INFO L226 Difference]: Without dead ends: 97 [2025-03-03 13:50:25,543 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 100 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2025-03-03 13:50:25,543 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 11 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 13:50:25,544 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 201 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:50:25,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2025-03-03 13:50:25,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 94. [2025-03-03 13:50:25,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 52 states have (on average 1.2307692307692308) internal successors, (64), 54 states have internal predecessors, (64), 30 states have call successors, (30), 11 states have call predecessors, (30), 11 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2025-03-03 13:50:25,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 122 transitions. [2025-03-03 13:50:25,559 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 122 transitions. Word has length 55 [2025-03-03 13:50:25,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:50:25,560 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 122 transitions. [2025-03-03 13:50:25,560 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 5 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2025-03-03 13:50:25,560 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 122 transitions. [2025-03-03 13:50:25,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2025-03-03 13:50:25,560 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:50:25,561 INFO L218 NwaCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 13:50:25,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2025-03-03 13:50:25,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2025-03-03 13:50:25,765 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:50:25,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:50:25,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1705449702, now seen corresponding path program 1 times [2025-03-03 13:50:25,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:50:25,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216984921] [2025-03-03 13:50:25,765 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:50:25,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:50:25,768 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-03-03 13:50:25,779 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-03-03 13:50:25,779 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:50:25,780 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unknown [2025-03-03 13:50:25,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [672611915] [2025-03-03 13:50:25,780 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:50:25,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:50:25,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:50:25,783 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 13:50:25,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2025-03-03 13:50:25,803 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 62 statements into 1 equivalence classes. [2025-03-03 13:50:25,818 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 62 of 62 statements. [2025-03-03 13:50:25,819 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:50:25,819 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:50:25,819 INFO L256 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 19 conjuncts are in the unsatisfiable core [2025-03-03 13:50:25,821 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:50:25,923 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2025-03-03 13:50:25,924 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:50:26,010 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2025-03-03 13:50:26,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:50:26,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216984921] [2025-03-03 13:50:26,010 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2025-03-03 13:50:26,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672611915] [2025-03-03 13:50:26,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672611915] provided 1 perfect and 1 imperfect interpolant sequences [2025-03-03 13:50:26,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2025-03-03 13:50:26,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 8 [2025-03-03 13:50:26,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287594625] [2025-03-03 13:50:26,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2025-03-03 13:50:26,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2025-03-03 13:50:26,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:50:26,011 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2025-03-03 13:50:26,011 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2025-03-03 13:50:26,011 INFO L87 Difference]: Start difference. First operand 94 states and 122 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-03 13:50:26,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:50:26,060 INFO L93 Difference]: Finished difference Result 100 states and 127 transitions. [2025-03-03 13:50:26,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2025-03-03 13:50:26,061 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 62 [2025-03-03 13:50:26,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:50:26,061 INFO L225 Difference]: With dead ends: 100 [2025-03-03 13:50:26,061 INFO L226 Difference]: Without dead ends: 95 [2025-03-03 13:50:26,062 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 114 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2025-03-03 13:50:26,062 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 4 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2025-03-03 13:50:26,062 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 106 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2025-03-03 13:50:26,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2025-03-03 13:50:26,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 93. [2025-03-03 13:50:26,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 54 states have (on average 1.2037037037037037) internal successors, (65), 54 states have internal predecessors, (65), 27 states have call successors, (27), 12 states have call predecessors, (27), 11 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2025-03-03 13:50:26,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 118 transitions. [2025-03-03 13:50:26,076 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 118 transitions. Word has length 62 [2025-03-03 13:50:26,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:50:26,076 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 118 transitions. [2025-03-03 13:50:26,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 4 states have internal predecessors, (16), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2025-03-03 13:50:26,076 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 118 transitions. [2025-03-03 13:50:26,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2025-03-03 13:50:26,077 INFO L210 NwaCegarLoop]: Found error trace [2025-03-03 13:50:26,077 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 13:50:26,083 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2025-03-03 13:50:26,277 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2025-03-03 13:50:26,278 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2025-03-03 13:50:26,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2025-03-03 13:50:26,278 INFO L85 PathProgramCache]: Analyzing trace with hash 501411722, now seen corresponding path program 1 times [2025-03-03 13:50:26,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2025-03-03 13:50:26,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326387] [2025-03-03 13:50:26,278 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:50:26,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2025-03-03 13:50:26,286 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-03 13:50:26,299 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-03 13:50:26,299 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:50:26,299 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:50:26,418 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2025-03-03 13:50:26,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2025-03-03 13:50:26,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326387] [2025-03-03 13:50:26,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326387] provided 0 perfect and 1 imperfect interpolant sequences [2025-03-03 13:50:26,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [405929499] [2025-03-03 13:50:26,419 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2025-03-03 13:50:26,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2025-03-03 13:50:26,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2025-03-03 13:50:26,421 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2025-03-03 13:50:26,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2025-03-03 13:50:26,445 INFO L108 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY partitioned 66 statements into 1 equivalence classes. [2025-03-03 13:50:26,458 INFO L111 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) and asserted 66 of 66 statements. [2025-03-03 13:50:26,458 INFO L114 AnnotateAndAsserter]: Assert order NOT_INCREMENTALLY issued 1 check-sat command(s) [2025-03-03 13:50:26,458 INFO L115 AnnotateAndAsserter]: Conjunction of SSA is unsat [2025-03-03 13:50:26,459 INFO L256 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 10 conjuncts are in the unsatisfiable core [2025-03-03 13:50:26,460 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2025-03-03 13:50:26,498 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2025-03-03 13:50:26,498 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2025-03-03 13:50:26,566 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2025-03-03 13:50:26,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [405929499] provided 0 perfect and 2 imperfect interpolant sequences [2025-03-03 13:50:26,566 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2025-03-03 13:50:26,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 11 [2025-03-03 13:50:26,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43710642] [2025-03-03 13:50:26,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2025-03-03 13:50:26,566 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2025-03-03 13:50:26,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2025-03-03 13:50:26,567 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2025-03-03 13:50:26,567 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2025-03-03 13:50:26,567 INFO L87 Difference]: Start difference. First operand 93 states and 118 transitions. Second operand has 11 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2025-03-03 13:50:26,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2025-03-03 13:50:26,661 INFO L93 Difference]: Finished difference Result 103 states and 128 transitions. [2025-03-03 13:50:26,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2025-03-03 13:50:26,662 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 66 [2025-03-03 13:50:26,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2025-03-03 13:50:26,662 INFO L225 Difference]: With dead ends: 103 [2025-03-03 13:50:26,662 INFO L226 Difference]: Without dead ends: 0 [2025-03-03 13:50:26,662 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 128 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2025-03-03 13:50:26,663 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 8 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2025-03-03 13:50:26,663 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 83 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2025-03-03 13:50:26,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2025-03-03 13:50:26,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2025-03-03 13:50:26,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2025-03-03 13:50:26,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2025-03-03 13:50:26,663 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 66 [2025-03-03 13:50:26,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2025-03-03 13:50:26,663 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2025-03-03 13:50:26,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 8 states have internal predecessors, (24), 4 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2025-03-03 13:50:26,663 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2025-03-03 13:50:26,664 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2025-03-03 13:50:26,665 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2025-03-03 13:50:26,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2025-03-03 13:50:26,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2025-03-03 13:50:26,868 INFO L422 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2025-03-03 13:50:26,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2025-03-03 13:50:33,191 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2025-03-03 13:50:33,201 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.03 01:50:33 BoogieIcfgContainer [2025-03-03 13:50:33,203 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2025-03-03 13:50:33,203 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2025-03-03 13:50:33,204 INFO L270 PluginConnector]: Initializing Witness Printer... [2025-03-03 13:50:33,204 INFO L274 PluginConnector]: Witness Printer initialized [2025-03-03 13:50:33,204 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 03.03 01:50:21" (3/4) ... [2025-03-03 13:50:33,206 INFO L146 WitnessPrinter]: Generating witness for correct program [2025-03-03 13:50:33,210 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure assume_abort_if_not [2025-03-03 13:50:33,210 INFO L385 IcfgBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2025-03-03 13:50:33,213 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2025-03-03 13:50:33,213 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2025-03-03 13:50:33,213 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2025-03-03 13:50:33,213 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2025-03-03 13:50:33,271 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2025-03-03 13:50:33,271 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2025-03-03 13:50:33,271 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2025-03-03 13:50:33,272 INFO L158 Benchmark]: Toolchain (without parser) took 12514.29ms. Allocated memory was 167.8MB in the beginning and 335.5MB in the end (delta: 167.8MB). Free memory was 123.8MB in the beginning and 208.7MB in the end (delta: -84.9MB). Peak memory consumption was 84.2MB. Max. memory is 16.1GB. [2025-03-03 13:50:33,272 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 201.3MB. Free memory is still 116.0MB. There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 13:50:33,272 INFO L158 Benchmark]: CACSL2BoogieTranslator took 145.02ms. Allocated memory is still 167.8MB. Free memory was 123.8MB in the beginning and 112.8MB in the end (delta: 11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-03 13:50:33,272 INFO L158 Benchmark]: Boogie Procedure Inliner took 16.49ms. Allocated memory is still 167.8MB. Free memory was 112.8MB in the beginning and 110.9MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 13:50:33,272 INFO L158 Benchmark]: Boogie Preprocessor took 16.33ms. Allocated memory is still 167.8MB. Free memory was 110.9MB in the beginning and 110.1MB in the end (delta: 757.4kB). There was no memory consumed. Max. memory is 16.1GB. [2025-03-03 13:50:33,273 INFO L158 Benchmark]: IcfgBuilder took 203.25ms. Allocated memory is still 167.8MB. Free memory was 110.1MB in the beginning and 97.9MB in the end (delta: 12.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2025-03-03 13:50:33,273 INFO L158 Benchmark]: TraceAbstraction took 12059.96ms. Allocated memory was 167.8MB in the beginning and 335.5MB in the end (delta: 167.8MB). Free memory was 96.9MB in the beginning and 213.5MB in the end (delta: -116.6MB). Peak memory consumption was 59.1MB. Max. memory is 16.1GB. [2025-03-03 13:50:33,273 INFO L158 Benchmark]: Witness Printer took 67.76ms. Allocated memory is still 335.5MB. Free memory was 213.5MB in the beginning and 208.7MB in the end (delta: 4.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2025-03-03 13:50:33,274 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 201.3MB. Free memory is still 116.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 145.02ms. Allocated memory is still 167.8MB. Free memory was 123.8MB in the beginning and 112.8MB in the end (delta: 11.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 16.49ms. Allocated memory is still 167.8MB. Free memory was 112.8MB in the beginning and 110.9MB in the end (delta: 1.9MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 16.33ms. Allocated memory is still 167.8MB. Free memory was 110.9MB in the beginning and 110.1MB in the end (delta: 757.4kB). There was no memory consumed. Max. memory is 16.1GB. * IcfgBuilder took 203.25ms. Allocated memory is still 167.8MB. Free memory was 110.1MB in the beginning and 97.9MB in the end (delta: 12.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 12059.96ms. Allocated memory was 167.8MB in the beginning and 335.5MB in the end (delta: 167.8MB). Free memory was 96.9MB in the beginning and 213.5MB in the end (delta: -116.6MB). Peak memory consumption was 59.1MB. Max. memory is 16.1GB. * Witness Printer took 67.76ms. Allocated memory is still 335.5MB. Free memory was 213.5MB in the beginning and 208.7MB in the end (delta: 4.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 5.7s, OverallIterations: 11, TraceHistogramMax: 8, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 123 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 94 mSDsluCounter, 1392 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1036 mSDsCounter, 88 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 569 IncrementalHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 88 mSolverCounterUnsat, 356 mSDtfsCounter, 569 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 717 GetRequests, 636 SyntacticMatches, 8 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=102occurred in iteration=8, InterpolantAutomatonStates: 67, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 37 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 952 NumberOfCodeBlocks, 952 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 856 ConstructedInterpolants, 0 QuantifiedInterpolants, 2190 SizeOfPredicates, 18 NumberOfNonLiveVariables, 1160 ConjunctsInSsa, 135 ConjunctsInUnsatCore, 18 InterpolantComputations, 8 PerfectInterpolantSequences, 1127/1181 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 35]: Location Invariant Derived location invariant: (((((((__int128) p * s) == (((__int128) q * r) + 1)) && (1 <= y)) && (y <= 5)) && (((((__int128) r * y) + b) + ((__int128) p * x)) == ((a + ((__int128) s * y)) + ((__int128) q * x)))) && ((((__int128) r * y) + ((__int128) p * x)) == a)) RESULT: Ultimate proved your program to be correct! [2025-03-03 13:50:33,285 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE