/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver 'cvc4 --incremental --print-success --lang smt' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-90.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 01:34:57,455 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 01:34:57,525 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-03 01:34:57,530 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 01:34:57,531 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 01:34:57,582 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 01:34:57,582 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 01:34:57,583 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 01:34:57,584 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 01:34:57,587 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 01:34:57,587 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 01:34:57,588 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 01:34:57,588 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 01:34:57,590 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 01:34:57,590 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 01:34:57,590 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 01:34:57,590 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 01:34:57,591 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 01:34:57,591 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 01:34:57,592 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 01:34:57,592 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 01:34:57,593 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 01:34:57,593 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 01:34:57,593 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 01:34:57,593 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 01:34:57,593 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 01:34:57,594 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 01:34:57,594 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 01:34:57,594 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 01:34:57,594 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 01:34:57,595 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 01:34:57,595 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 01:34:57,595 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 01:34:57,596 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 01:34:57,596 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 01:34:57,596 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 01:34:57,596 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 01:34:57,596 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 01:34:57,596 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 01:34:57,597 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 01:34:57,597 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 01:34:57,597 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 01:34:57,597 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 01:34:57,597 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 01:34:57,598 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt [2024-11-03 01:34:57,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 01:34:57,838 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 01:34:57,841 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 01:34:57,842 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 01:34:57,842 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 01:34:57,844 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-90.i [2024-11-03 01:34:59,252 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 01:34:59,444 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 01:34:59,444 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-90.i [2024-11-03 01:34:59,451 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d41e297a2/5ee1ba45a7cc4b428604e898cabe5e6d/FLAG4ce81e011 [2024-11-03 01:34:59,845 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d41e297a2/5ee1ba45a7cc4b428604e898cabe5e6d [2024-11-03 01:34:59,847 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 01:34:59,849 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 01:34:59,853 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 01:34:59,853 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 01:34:59,858 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 01:34:59,859 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:34:59" (1/1) ... [2024-11-03 01:34:59,859 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d77d872 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:34:59, skipping insertion in model container [2024-11-03 01:34:59,860 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:34:59" (1/1) ... [2024-11-03 01:34:59,886 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 01:35:00,031 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-90.i[915,928] [2024-11-03 01:35:00,066 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 01:35:00,077 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 01:35:00,086 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount25_file-90.i[915,928] [2024-11-03 01:35:00,104 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 01:35:00,124 INFO L204 MainTranslator]: Completed translation [2024-11-03 01:35:00,124 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:00 WrapperNode [2024-11-03 01:35:00,124 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 01:35:00,125 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 01:35:00,125 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 01:35:00,125 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 01:35:00,130 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:00" (1/1) ... [2024-11-03 01:35:00,138 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:00" (1/1) ... [2024-11-03 01:35:00,156 INFO L138 Inliner]: procedures = 27, calls = 30, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 110 [2024-11-03 01:35:00,156 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 01:35:00,157 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 01:35:00,157 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 01:35:00,157 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 01:35:00,167 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:00" (1/1) ... [2024-11-03 01:35:00,167 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:00" (1/1) ... [2024-11-03 01:35:00,171 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:00" (1/1) ... [2024-11-03 01:35:00,181 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]. [2024-11-03 01:35:00,182 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:00" (1/1) ... [2024-11-03 01:35:00,182 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:00" (1/1) ... [2024-11-03 01:35:00,194 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:00" (1/1) ... [2024-11-03 01:35:00,197 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:00" (1/1) ... [2024-11-03 01:35:00,205 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:00" (1/1) ... [2024-11-03 01:35:00,206 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:00" (1/1) ... [2024-11-03 01:35:00,213 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 01:35:00,214 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 01:35:00,214 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 01:35:00,214 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 01:35:00,215 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:00" (1/1) ... [2024-11-03 01:35:00,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 01:35:00,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 01:35:00,247 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) [2024-11-03 01:35:00,251 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 [2024-11-03 01:35:00,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 01:35:00,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 01:35:00,276 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-03 01:35:00,276 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-03 01:35:00,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 01:35:00,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 01:35:00,395 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 01:35:00,397 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 01:35:00,635 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-03 01:35:00,635 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 01:35:00,650 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 01:35:00,650 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-03 01:35:00,651 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:35:00 BoogieIcfgContainer [2024-11-03 01:35:00,651 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 01:35:00,653 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 01:35:00,653 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 01:35:00,657 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 01:35:00,657 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:34:59" (1/3) ... [2024-11-03 01:35:00,658 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6990eb03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:35:00, skipping insertion in model container [2024-11-03 01:35:00,658 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:35:00" (2/3) ... [2024-11-03 01:35:00,659 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6990eb03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:35:00, skipping insertion in model container [2024-11-03 01:35:00,659 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:35:00" (3/3) ... [2024-11-03 01:35:00,660 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount25_file-90.i [2024-11-03 01:35:00,677 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 01:35:00,678 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 01:35:00,745 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 01:35:00,751 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;@7bcb47ff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 01:35:00,754 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 01:35:00,758 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 32 states have internal predecessors, (41), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-03 01:35:00,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-03 01:35:00,770 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:35:00,770 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 01:35:00,771 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:35:00,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:35:00,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1387335848, now seen corresponding path program 1 times [2024-11-03 01:35:00,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:35:00,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685059247] [2024-11-03 01:35:00,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:35:00,787 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:35:00,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:35:00,790 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 01:35:00,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-11-03 01:35:00,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:35:01,001 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-03 01:35:01,010 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:35:01,046 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2024-11-03 01:35:01,047 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:35:01,139 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2024-11-03 01:35:01,140 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:35:01,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [685059247] [2024-11-03 01:35:01,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [685059247] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 01:35:01,141 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 01:35:01,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-03 01:35:01,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414302356] [2024-11-03 01:35:01,144 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 01:35:01,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-03 01:35:01,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:35:01,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-03 01:35:01,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 01:35:01,174 INFO L87 Difference]: Start difference. First operand has 51 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 32 states have internal predecessors, (41), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 1 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-03 01:35:01,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 01:35:01,207 INFO L93 Difference]: Finished difference Result 95 states and 161 transitions. [2024-11-03 01:35:01,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-03 01:35:01,210 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 1 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 107 [2024-11-03 01:35:01,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 01:35:01,219 INFO L225 Difference]: With dead ends: 95 [2024-11-03 01:35:01,219 INFO L226 Difference]: Without dead ends: 47 [2024-11-03 01:35:01,222 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 01:35:01,228 INFO L432 NwaCegarLoop]: 68 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, 68 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 [2024-11-03 01:35:01,229 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 01:35:01,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2024-11-03 01:35:01,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2024-11-03 01:35:01,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 28 states have internal predecessors, (34), 17 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-03 01:35:01,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 68 transitions. [2024-11-03 01:35:01,276 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 68 transitions. Word has length 107 [2024-11-03 01:35:01,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 01:35:01,277 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 68 transitions. [2024-11-03 01:35:01,277 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 1 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-03 01:35:01,277 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 68 transitions. [2024-11-03 01:35:01,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-03 01:35:01,283 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:35:01,283 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 01:35:01,287 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Ended with exit code 0 [2024-11-03 01:35:01,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 01:35:01,484 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:35:01,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:35:01,485 INFO L85 PathProgramCache]: Analyzing trace with hash 2101967718, now seen corresponding path program 1 times [2024-11-03 01:35:01,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:35:01,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1018190610] [2024-11-03 01:35:01,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:35:01,486 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:35:01,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:35:01,489 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 01:35:01,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-11-03 01:35:01,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:35:01,849 INFO L255 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-03 01:35:01,870 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:35:14,312 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 382 proven. 36 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-11-03 01:35:14,313 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:35:23,657 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-11-03 01:35:23,658 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:35:23,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1018190610] [2024-11-03 01:35:23,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1018190610] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 01:35:23,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 01:35:23,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [31] total 42 [2024-11-03 01:35:23,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849520805] [2024-11-03 01:35:23,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 01:35:23,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-03 01:35:23,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:35:23,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-03 01:35:23,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=1399, Unknown=0, NotChecked=0, Total=1722 [2024-11-03 01:35:23,662 INFO L87 Difference]: Start difference. First operand 47 states and 68 transitions. Second operand has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 1 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-03 01:35:26,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 01:35:26,338 INFO L93 Difference]: Finished difference Result 84 states and 115 transitions. [2024-11-03 01:35:26,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-03 01:35:26,339 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 1 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 107 [2024-11-03 01:35:26,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 01:35:26,341 INFO L225 Difference]: With dead ends: 84 [2024-11-03 01:35:26,341 INFO L226 Difference]: Without dead ends: 82 [2024-11-03 01:35:26,342 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 683 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=407, Invalid=1849, Unknown=0, NotChecked=0, Total=2256 [2024-11-03 01:35:26,344 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 173 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 344 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-03 01:35:26,344 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 307 Invalid, 435 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 344 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-03 01:35:26,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2024-11-03 01:35:26,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 70. [2024-11-03 01:35:26,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 42 states have (on average 1.1666666666666667) internal successors, (49), 43 states have internal predecessors, (49), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-03 01:35:26,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 99 transitions. [2024-11-03 01:35:26,374 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 99 transitions. Word has length 107 [2024-11-03 01:35:26,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 01:35:26,378 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 99 transitions. [2024-11-03 01:35:26,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 11 states have internal predecessors, (28), 1 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-03 01:35:26,378 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 99 transitions. [2024-11-03 01:35:26,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-03 01:35:26,380 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:35:26,380 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 01:35:26,388 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Ended with exit code 0 [2024-11-03 01:35:26,580 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 01:35:26,581 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:35:26,582 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:35:26,582 INFO L85 PathProgramCache]: Analyzing trace with hash -417992216, now seen corresponding path program 1 times [2024-11-03 01:35:26,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:35:26,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [824527813] [2024-11-03 01:35:26,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:35:26,583 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:35:26,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:35:26,585 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 01:35:26,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-11-03 01:35:26,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:35:26,771 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 01:35:26,774 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:35:26,794 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-03 01:35:26,794 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:35:26,853 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-03 01:35:26,853 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:35:26,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [824527813] [2024-11-03 01:35:26,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [824527813] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 01:35:26,854 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 01:35:26,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-03 01:35:26,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044135075] [2024-11-03 01:35:26,854 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 01:35:26,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 01:35:26,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:35:26,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 01:35:26,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 01:35:26,857 INFO L87 Difference]: Start difference. First operand 70 states and 99 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-03 01:35:26,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 01:35:26,899 INFO L93 Difference]: Finished difference Result 178 states and 255 transitions. [2024-11-03 01:35:26,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 01:35:26,901 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 107 [2024-11-03 01:35:26,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 01:35:26,905 INFO L225 Difference]: With dead ends: 178 [2024-11-03 01:35:26,905 INFO L226 Difference]: Without dead ends: 111 [2024-11-03 01:35:26,906 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 211 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 01:35:26,907 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 63 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 01:35:26,908 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 127 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 01:35:26,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-11-03 01:35:26,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 71. [2024-11-03 01:35:26,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 43 states have (on average 1.1627906976744187) internal successors, (50), 44 states have internal predecessors, (50), 25 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-03 01:35:26,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 100 transitions. [2024-11-03 01:35:26,931 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 100 transitions. Word has length 107 [2024-11-03 01:35:26,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 01:35:26,932 INFO L471 AbstractCegarLoop]: Abstraction has 71 states and 100 transitions. [2024-11-03 01:35:26,932 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (17), 1 states have call predecessors, (17), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-03 01:35:26,932 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 100 transitions. [2024-11-03 01:35:26,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2024-11-03 01:35:26,934 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:35:26,934 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 01:35:26,938 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2024-11-03 01:35:27,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 01:35:27,135 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:35:27,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:35:27,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1227338842, now seen corresponding path program 1 times [2024-11-03 01:35:27,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:35:27,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [7594450] [2024-11-03 01:35:27,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:35:27,137 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:35:27,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:35:27,139 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 01:35:27,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2024-11-03 01:35:27,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:35:27,390 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-03 01:35:27,394 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:35:27,793 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-03 01:35:27,793 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:35:27,931 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 544 trivial. 0 not checked. [2024-11-03 01:35:27,932 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:35:27,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [7594450] [2024-11-03 01:35:27,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [7594450] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 01:35:27,932 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 01:35:27,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 5] imperfect sequences [] total 8 [2024-11-03 01:35:27,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436773638] [2024-11-03 01:35:27,933 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 01:35:27,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-03 01:35:27,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:35:27,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-03 01:35:27,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-03 01:35:27,936 INFO L87 Difference]: Start difference. First operand 71 states and 100 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-03 01:35:28,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 01:35:28,162 INFO L93 Difference]: Finished difference Result 186 states and 266 transitions. [2024-11-03 01:35:28,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-03 01:35:28,163 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 107 [2024-11-03 01:35:28,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 01:35:28,165 INFO L225 Difference]: With dead ends: 186 [2024-11-03 01:35:28,165 INFO L226 Difference]: Without dead ends: 118 [2024-11-03 01:35:28,166 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-03 01:35:28,166 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 55 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 01:35:28,167 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 289 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 01:35:28,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-03 01:35:28,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 107. [2024-11-03 01:35:28,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 61 states have (on average 1.1475409836065573) internal successors, (70), 62 states have internal predecessors, (70), 42 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-03 01:35:28,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 154 transitions. [2024-11-03 01:35:28,197 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 154 transitions. Word has length 107 [2024-11-03 01:35:28,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 01:35:28,198 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 154 transitions. [2024-11-03 01:35:28,198 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2024-11-03 01:35:28,198 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 154 transitions. [2024-11-03 01:35:28,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-03 01:35:28,200 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:35:28,200 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 01:35:28,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2024-11-03 01:35:28,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 01:35:28,401 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:35:28,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:35:28,402 INFO L85 PathProgramCache]: Analyzing trace with hash 331001653, now seen corresponding path program 1 times [2024-11-03 01:35:28,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:35:28,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1189491572] [2024-11-03 01:35:28,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:35:28,402 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:35:28,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:35:28,405 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 01:35:28,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2024-11-03 01:35:28,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:35:28,707 INFO L255 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 45 conjuncts are in the unsatisfiable core [2024-11-03 01:35:28,712 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:35:37,966 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 426 proven. 78 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-03 01:35:37,966 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:35:47,896 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-11-03 01:35:47,897 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:35:47,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1189491572] [2024-11-03 01:35:47,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1189491572] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 01:35:47,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 01:35:47,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [37] total 48 [2024-11-03 01:35:47,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597219915] [2024-11-03 01:35:47,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 01:35:47,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-03 01:35:47,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:35:47,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-03 01:35:47,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=422, Invalid=1834, Unknown=0, NotChecked=0, Total=2256 [2024-11-03 01:35:47,900 INFO L87 Difference]: Start difference. First operand 107 states and 154 transitions. Second operand has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 12 states have internal predecessors, (29), 1 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-03 01:35:49,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 01:35:49,790 INFO L93 Difference]: Finished difference Result 132 states and 181 transitions. [2024-11-03 01:35:49,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-03 01:35:49,791 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 12 states have internal predecessors, (29), 1 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 108 [2024-11-03 01:35:49,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 01:35:49,793 INFO L225 Difference]: With dead ends: 132 [2024-11-03 01:35:49,793 INFO L226 Difference]: Without dead ends: 130 [2024-11-03 01:35:49,794 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 896 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=499, Invalid=2363, Unknown=0, NotChecked=0, Total=2862 [2024-11-03 01:35:49,795 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 104 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-03 01:35:49,795 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 226 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-03 01:35:49,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2024-11-03 01:35:49,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 113. [2024-11-03 01:35:49,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 67 states have (on average 1.1492537313432836) internal successors, (77), 68 states have internal predecessors, (77), 42 states have call successors, (42), 3 states have call predecessors, (42), 3 states have return successors, (42), 41 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-03 01:35:49,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 161 transitions. [2024-11-03 01:35:49,823 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 161 transitions. Word has length 108 [2024-11-03 01:35:49,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 01:35:49,824 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 161 transitions. [2024-11-03 01:35:49,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.230769230769231) internal successors, (29), 12 states have internal predecessors, (29), 1 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-03 01:35:49,824 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 161 transitions. [2024-11-03 01:35:49,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-03 01:35:49,826 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:35:49,826 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 01:35:49,835 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2024-11-03 01:35:50,026 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 01:35:50,027 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:35:50,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:35:50,028 INFO L85 PathProgramCache]: Analyzing trace with hash 201713397, now seen corresponding path program 1 times [2024-11-03 01:35:50,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:35:50,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1001912665] [2024-11-03 01:35:50,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:35:50,028 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:35:50,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:35:50,029 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 01:35:50,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2024-11-03 01:35:50,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:35:50,253 INFO L255 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-03 01:35:50,256 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:35:50,303 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 156 proven. 6 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2024-11-03 01:35:50,303 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:35:50,391 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 42 proven. 6 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-11-03 01:35:50,391 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:35:50,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1001912665] [2024-11-03 01:35:50,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1001912665] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 01:35:50,392 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 01:35:50,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2024-11-03 01:35:50,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132966071] [2024-11-03 01:35:50,392 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 01:35:50,392 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-03 01:35:50,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:35:50,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-03 01:35:50,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-03 01:35:50,393 INFO L87 Difference]: Start difference. First operand 113 states and 161 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-03 01:35:50,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 01:35:50,703 INFO L93 Difference]: Finished difference Result 195 states and 268 transitions. [2024-11-03 01:35:50,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-03 01:35:50,704 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 108 [2024-11-03 01:35:50,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 01:35:50,706 INFO L225 Difference]: With dead ends: 195 [2024-11-03 01:35:50,706 INFO L226 Difference]: Without dead ends: 118 [2024-11-03 01:35:50,707 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 208 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2024-11-03 01:35:50,708 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 94 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 01:35:50,708 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 165 Invalid, 289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 01:35:50,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-03 01:35:50,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 110. [2024-11-03 01:35:50,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 62 states have (on average 1.064516129032258) internal successors, (66), 64 states have internal predecessors, (66), 42 states have call successors, (42), 5 states have call predecessors, (42), 5 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-03 01:35:50,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 150 transitions. [2024-11-03 01:35:50,728 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 150 transitions. Word has length 108 [2024-11-03 01:35:50,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 01:35:50,728 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 150 transitions. [2024-11-03 01:35:50,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 2 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-03 01:35:50,729 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 150 transitions. [2024-11-03 01:35:50,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-03 01:35:50,730 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:35:50,730 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 01:35:50,736 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2024-11-03 01:35:50,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 01:35:50,931 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:35:50,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:35:50,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1432785787, now seen corresponding path program 1 times [2024-11-03 01:35:50,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:35:50,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [570073682] [2024-11-03 01:35:50,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:35:50,933 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:35:50,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:35:50,936 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 01:35:50,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2024-11-03 01:35:51,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:35:51,211 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-03 01:35:51,215 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:36:02,185 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 426 proven. 78 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-03 01:36:02,186 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:36:12,498 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 496 trivial. 0 not checked. [2024-11-03 01:36:12,499 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:36:12,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [570073682] [2024-11-03 01:36:12,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [570073682] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 01:36:12,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 01:36:12,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [38] total 50 [2024-11-03 01:36:12,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15218841] [2024-11-03 01:36:12,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 01:36:12,499 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-03 01:36:12,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:36:12,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-03 01:36:12,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=445, Invalid=2005, Unknown=0, NotChecked=0, Total=2450 [2024-11-03 01:36:12,501 INFO L87 Difference]: Start difference. First operand 110 states and 150 transitions. Second operand has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 states have internal predecessors, (30), 1 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-03 01:36:17,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 01:36:17,381 INFO L93 Difference]: Finished difference Result 135 states and 172 transitions. [2024-11-03 01:36:17,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-03 01:36:17,382 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 states have internal predecessors, (30), 1 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 109 [2024-11-03 01:36:17,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 01:36:17,383 INFO L225 Difference]: With dead ends: 135 [2024-11-03 01:36:17,383 INFO L226 Difference]: Without dead ends: 133 [2024-11-03 01:36:17,384 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1026 ImplicationChecksByTransitivity, 14.7s TimeCoverageRelationStatistics Valid=550, Invalid=2642, Unknown=0, NotChecked=0, Total=3192 [2024-11-03 01:36:17,385 INFO L432 NwaCegarLoop]: 40 mSDtfsCounter, 100 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 370 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 370 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-03 01:36:17,385 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 175 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 370 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-03 01:36:17,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-03 01:36:17,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 122. [2024-11-03 01:36:17,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 71 states have (on average 1.056338028169014) internal successors, (75), 73 states have internal predecessors, (75), 42 states have call successors, (42), 8 states have call predecessors, (42), 8 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-03 01:36:17,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 159 transitions. [2024-11-03 01:36:17,421 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 159 transitions. Word has length 109 [2024-11-03 01:36:17,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 01:36:17,422 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 159 transitions. [2024-11-03 01:36:17,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 13 states have internal predecessors, (30), 1 states have call successors, (17), 1 states have call predecessors, (17), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-03 01:36:17,422 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 159 transitions. [2024-11-03 01:36:17,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2024-11-03 01:36:17,423 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:36:17,423 INFO L215 NwaCegarLoop]: trace histogram [17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 01:36:17,429 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (8)] Ended with exit code 0 [2024-11-03 01:36:17,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 01:36:17,624 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:36:17,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:36:17,625 INFO L85 PathProgramCache]: Analyzing trace with hash 1434632829, now seen corresponding path program 1 times [2024-11-03 01:36:17,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:36:17,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1919894997] [2024-11-03 01:36:17,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:36:17,625 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:36:17,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:36:17,627 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 01:36:17,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2024-11-03 01:36:17,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:36:17,961 INFO L255 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-03 01:36:17,965 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:36:29,525 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 382 proven. 36 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2024-11-03 01:36:29,525 INFO L311 TraceCheckSpWp]: Computing backward predicates...