/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 'cvc5 --incremental --print-success --lang smt' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/bitvector/soft_float_4-2a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 05:43:15,738 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 05:43:15,773 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 05:43:15,776 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 05:43:15,777 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 05:43:15,790 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 05:43:15,791 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 05:43:15,791 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 05:43:15,791 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 05:43:15,791 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 05:43:15,792 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 05:43:15,792 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 05:43:15,792 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 05:43:15,793 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 05:43:15,793 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 05:43:15,793 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 05:43:15,793 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 05:43:15,794 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 05:43:15,794 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 05:43:15,794 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 05:43:15,794 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 05:43:15,795 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 05:43:15,795 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 05:43:15,795 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 05:43:15,796 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 05:43:15,796 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 05:43:15,796 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 05:43:15,796 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 05:43:15,796 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 05:43:15,797 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 05:43:15,797 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 05:43:15,797 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 05:43:15,797 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 05:43:15,798 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 05:43:15,798 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 05:43:15,798 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 05:43:15,798 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 05:43:15,798 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 05:43:15,799 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 05:43:15,799 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 05:43:15,799 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 05:43:15,799 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 05:43:15,799 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 05:43:15,800 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 05:43:15,800 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:15,945 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 05:43:15,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 05:43:15,966 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 05:43:15,967 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 05:43:15,967 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 05:43:15,968 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_4-2a.c.cil.c [2024-11-03 05:43:17,302 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 05:43:17,474 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 05:43:17,474 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/soft_float_4-2a.c.cil.c [2024-11-03 05:43:17,482 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe8ff3962/2506d9b9928147c0b4cd65ed93739f32/FLAGde3cf66f0 [2024-11-03 05:43:17,886 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe8ff3962/2506d9b9928147c0b4cd65ed93739f32 [2024-11-03 05:43:17,888 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 05:43:17,889 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 05:43:17,893 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 05:43:17,894 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 05:43:17,898 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 05:43:17,902 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:43:17" (1/1) ... [2024-11-03 05:43:17,903 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b640968 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:43:17, skipping insertion in model container [2024-11-03 05:43:17,903 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:43:17" (1/1) ... [2024-11-03 05:43:17,947 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 05:43:18,096 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/soft_float_4-2a.c.cil.c[755,768] [2024-11-03 05:43:18,145 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 05:43:18,168 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 05:43:18,192 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/soft_float_4-2a.c.cil.c[755,768] [2024-11-03 05:43:18,217 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 05:43:18,239 INFO L204 MainTranslator]: Completed translation [2024-11-03 05:43:18,240 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:43:18 WrapperNode [2024-11-03 05:43:18,241 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 05:43:18,241 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 05:43:18,241 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 05:43:18,242 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 05:43:18,246 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:43:18" (1/1) ... [2024-11-03 05:43:18,255 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:43:18" (1/1) ... [2024-11-03 05:43:18,270 INFO L138 Inliner]: procedures = 17, calls = 17, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 54 [2024-11-03 05:43:18,271 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 05:43:18,271 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 05:43:18,272 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 05:43:18,272 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 05:43:18,281 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:43:18" (1/1) ... [2024-11-03 05:43:18,281 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:43:18" (1/1) ... [2024-11-03 05:43:18,287 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:43:18" (1/1) ... [2024-11-03 05:43:18,299 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 05:43:18,299 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:43:18" (1/1) ... [2024-11-03 05:43:18,299 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:43:18" (1/1) ... [2024-11-03 05:43:18,308 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:43:18" (1/1) ... [2024-11-03 05:43:18,313 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:43:18" (1/1) ... [2024-11-03 05:43:18,319 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:43:18" (1/1) ... [2024-11-03 05:43:18,320 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:43:18" (1/1) ... [2024-11-03 05:43:18,322 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 05:43:18,328 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 05:43:18,329 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 05:43:18,329 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 05:43:18,330 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:43:18" (1/1) ... [2024-11-03 05:43:18,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 05:43:18,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 05:43:18,374 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 05:43:18,377 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 05:43:18,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 05:43:18,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 05:43:18,419 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2024-11-03 05:43:18,419 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2024-11-03 05:43:18,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 05:43:18,420 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 05:43:18,421 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2024-11-03 05:43:18,421 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2024-11-03 05:43:18,421 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-03 05:43:18,421 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-03 05:43:18,517 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 05:43:18,520 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 05:43:18,745 INFO L? ?]: Removed 34 outVars from TransFormulas that were not future-live. [2024-11-03 05:43:18,745 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 05:43:18,767 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 05:43:18,767 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-03 05:43:18,767 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:43:18 BoogieIcfgContainer [2024-11-03 05:43:18,767 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 05:43:18,771 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 05:43:18,771 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 05:43:18,773 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 05:43:18,774 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:43:17" (1/3) ... [2024-11-03 05:43:18,774 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cfd4ebc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:43:18, skipping insertion in model container [2024-11-03 05:43:18,775 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:43:18" (2/3) ... [2024-11-03 05:43:18,775 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cfd4ebc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:43:18, skipping insertion in model container [2024-11-03 05:43:18,776 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:43:18" (3/3) ... [2024-11-03 05:43:18,777 INFO L112 eAbstractionObserver]: Analyzing ICFG soft_float_4-2a.c.cil.c [2024-11-03 05:43:18,790 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 05:43:18,790 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 05:43:18,832 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 05:43:18,837 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;@46f21419, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 05:43:18,837 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 05:43:18,840 INFO L276 IsEmpty]: Start isEmpty. Operand has 54 states, 41 states have (on average 1.4878048780487805) internal successors, (61), 42 states have internal predecessors, (61), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-03 05:43:18,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-03 05:43:18,845 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:18,846 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:43:18,846 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:18,849 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:18,850 INFO L85 PathProgramCache]: Analyzing trace with hash -2030319843, now seen corresponding path program 1 times [2024-11-03 05:43:18,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:18,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2105031812] [2024-11-03 05:43:18,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:18,858 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:18,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:18,862 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:43:18,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-11-03 05:43:18,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:18,954 INFO L255 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-03 05:43:18,960 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:19,226 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-03 05:43:19,226 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:19,550 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-03 05:43:19,551 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:19,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2105031812] [2024-11-03 05:43:19,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2105031812] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 05:43:19,551 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 05:43:19,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14, 8] imperfect sequences [] total 20 [2024-11-03 05:43:19,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497158593] [2024-11-03 05:43:19,554 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 05:43:19,558 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-03 05:43:19,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:19,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-03 05:43:19,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=331, Unknown=0, NotChecked=0, Total=380 [2024-11-03 05:43:19,581 INFO L87 Difference]: Start difference. First operand has 54 states, 41 states have (on average 1.4878048780487805) internal successors, (61), 42 states have internal predecessors, (61), 8 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 20 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 14 states have internal predecessors, (30), 5 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-03 05:43:20,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:20,044 INFO L93 Difference]: Finished difference Result 180 states and 288 transitions. [2024-11-03 05:43:20,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-03 05:43:20,047 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 14 states have internal predecessors, (30), 5 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) Word has length 31 [2024-11-03 05:43:20,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:20,053 INFO L225 Difference]: With dead ends: 180 [2024-11-03 05:43:20,054 INFO L226 Difference]: Without dead ends: 119 [2024-11-03 05:43:20,056 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=482, Unknown=0, NotChecked=0, Total=552 [2024-11-03 05:43:20,059 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 65 mSDsluCounter, 1041 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 1115 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:20,059 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 1115 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-03 05:43:20,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-03 05:43:20,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 86. [2024-11-03 05:43:20,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 63 states have (on average 1.2857142857142858) internal successors, (81), 65 states have internal predecessors, (81), 16 states have call successors, (16), 5 states have call predecessors, (16), 6 states have return successors, (19), 15 states have call predecessors, (19), 15 states have call successors, (19) [2024-11-03 05:43:20,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 116 transitions. [2024-11-03 05:43:20,095 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 116 transitions. Word has length 31 [2024-11-03 05:43:20,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:20,095 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 116 transitions. [2024-11-03 05:43:20,095 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 1.7647058823529411) internal successors, (30), 14 states have internal predecessors, (30), 5 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (6), 5 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-03 05:43:20,096 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 116 transitions. [2024-11-03 05:43:20,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-03 05:43:20,097 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:20,097 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 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 05:43:20,103 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (2)] Ended with exit code 0 [2024-11-03 05:43:20,299 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:20,300 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:20,300 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:20,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1468368814, now seen corresponding path program 1 times [2024-11-03 05:43:20,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:20,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1870897302] [2024-11-03 05:43:20,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:20,301 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:20,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:20,302 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:43:20,304 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-11-03 05:43:20,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:20,355 WARN L253 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-03 05:43:20,359 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:20,584 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-03 05:43:20,584 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:20,757 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-03 05:43:20,757 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:20,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1870897302] [2024-11-03 05:43:20,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1870897302] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 05:43:20,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 05:43:20,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9] total 18 [2024-11-03 05:43:20,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358892254] [2024-11-03 05:43:20,758 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 05:43:20,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-03 05:43:20,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:20,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-03 05:43:20,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2024-11-03 05:43:20,760 INFO L87 Difference]: Start difference. First operand 86 states and 116 transitions. Second operand has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 15 states have internal predecessors, (39), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-03 05:43:21,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:21,111 INFO L93 Difference]: Finished difference Result 163 states and 223 transitions. [2024-11-03 05:43:21,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-03 05:43:21,112 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 15 states have internal predecessors, (39), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 35 [2024-11-03 05:43:21,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:21,113 INFO L225 Difference]: With dead ends: 163 [2024-11-03 05:43:21,113 INFO L226 Difference]: Without dead ends: 123 [2024-11-03 05:43:21,114 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2024-11-03 05:43:21,114 INFO L432 NwaCegarLoop]: 47 mSDtfsCounter, 24 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 468 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:21,115 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 666 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 468 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-03 05:43:21,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-11-03 05:43:21,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 98. [2024-11-03 05:43:21,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 73 states have (on average 1.2602739726027397) internal successors, (92), 75 states have internal predecessors, (92), 16 states have call successors, (16), 7 states have call predecessors, (16), 8 states have return successors, (19), 15 states have call predecessors, (19), 15 states have call successors, (19) [2024-11-03 05:43:21,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 127 transitions. [2024-11-03 05:43:21,126 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 127 transitions. Word has length 35 [2024-11-03 05:43:21,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:21,127 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 127 transitions. [2024-11-03 05:43:21,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.1666666666666665) internal successors, (39), 15 states have internal predecessors, (39), 3 states have call successors, (5), 3 states have call predecessors, (5), 5 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-03 05:43:21,127 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 127 transitions. [2024-11-03 05:43:21,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-03 05:43:21,128 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:21,128 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 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 05:43:21,135 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (3)] Ended with exit code 0 [2024-11-03 05:43:21,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:21,330 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:21,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:21,331 INFO L85 PathProgramCache]: Analyzing trace with hash 622743942, now seen corresponding path program 1 times [2024-11-03 05:43:21,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:21,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2147215109] [2024-11-03 05:43:21,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:21,331 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:21,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:21,334 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:43:21,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-11-03 05:43:21,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:21,382 WARN L253 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-03 05:43:21,386 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:21,879 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-03 05:43:21,879 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:22,041 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-03 05:43:22,041 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:22,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2147215109] [2024-11-03 05:43:22,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2147215109] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 05:43:22,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 05:43:22,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [15] total 17 [2024-11-03 05:43:22,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121813074] [2024-11-03 05:43:22,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 05:43:22,042 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-03 05:43:22,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:22,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-03 05:43:22,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2024-11-03 05:43:22,043 INFO L87 Difference]: Start difference. First operand 98 states and 127 transitions. Second operand has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-03 05:43:22,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:22,121 INFO L93 Difference]: Finished difference Result 151 states and 196 transitions. [2024-11-03 05:43:22,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-03 05:43:22,121 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 35 [2024-11-03 05:43:22,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:22,122 INFO L225 Difference]: With dead ends: 151 [2024-11-03 05:43:22,122 INFO L226 Difference]: Without dead ends: 111 [2024-11-03 05:43:22,123 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2024-11-03 05:43:22,124 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 12 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:22,124 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 392 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 05:43:22,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-11-03 05:43:22,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 104. [2024-11-03 05:43:22,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 78 states have (on average 1.2435897435897436) internal successors, (97), 80 states have internal predecessors, (97), 16 states have call successors, (16), 8 states have call predecessors, (16), 9 states have return successors, (19), 15 states have call predecessors, (19), 15 states have call successors, (19) [2024-11-03 05:43:22,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 132 transitions. [2024-11-03 05:43:22,133 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 132 transitions. Word has length 35 [2024-11-03 05:43:22,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:22,133 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 132 transitions. [2024-11-03 05:43:22,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 6 states have internal predecessors, (23), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-03 05:43:22,133 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 132 transitions. [2024-11-03 05:43:22,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-03 05:43:22,134 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:22,134 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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] [2024-11-03 05:43:22,140 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (4)] Ended with exit code 0 [2024-11-03 05:43:22,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:22,337 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:22,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:22,337 INFO L85 PathProgramCache]: Analyzing trace with hash 461161469, now seen corresponding path program 2 times [2024-11-03 05:43:22,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:22,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1131951715] [2024-11-03 05:43:22,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:22,338 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:22,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:22,340 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:43:22,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2024-11-03 05:43:22,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:22,392 WARN L253 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-03 05:43:22,395 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:22,598 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-03 05:43:22,599 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:22,758 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-03 05:43:22,759 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:22,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1131951715] [2024-11-03 05:43:22,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1131951715] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 05:43:22,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 05:43:22,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [12] total 16 [2024-11-03 05:43:22,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062105649] [2024-11-03 05:43:22,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 05:43:22,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 05:43:22,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:22,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 05:43:22,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2024-11-03 05:43:22,761 INFO L87 Difference]: Start difference. First operand 104 states and 132 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-03 05:43:22,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:22,815 INFO L93 Difference]: Finished difference Result 110 states and 137 transitions. [2024-11-03 05:43:22,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-03 05:43:22,816 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2024-11-03 05:43:22,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:22,817 INFO L225 Difference]: With dead ends: 110 [2024-11-03 05:43:22,817 INFO L226 Difference]: Without dead ends: 108 [2024-11-03 05:43:22,817 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 60 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2024-11-03 05:43:22,818 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 3 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 304 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 [2024-11-03 05:43:22,818 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 304 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 05:43:22,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-03 05:43:22,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2024-11-03 05:43:22,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 81 states have (on average 1.2345679012345678) internal successors, (100), 83 states have internal predecessors, (100), 16 states have call successors, (16), 9 states have call predecessors, (16), 10 states have return successors, (19), 15 states have call predecessors, (19), 15 states have call successors, (19) [2024-11-03 05:43:22,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 135 transitions. [2024-11-03 05:43:22,828 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 135 transitions. Word has length 39 [2024-11-03 05:43:22,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:22,828 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 135 transitions. [2024-11-03 05:43:22,828 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-03 05:43:22,828 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 135 transitions. [2024-11-03 05:43:22,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-03 05:43:22,830 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:22,830 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1] [2024-11-03 05:43:22,832 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (5)] Ended with exit code 0 [2024-11-03 05:43:23,031 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:23,032 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:23,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:23,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1162622522, now seen corresponding path program 1 times [2024-11-03 05:43:23,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:23,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2144233693] [2024-11-03 05:43:23,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:23,033 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:23,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:23,036 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:43:23,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2024-11-03 05:43:23,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:23,113 WARN L253 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-03 05:43:23,120 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:23,527 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-03 05:43:23,527 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:24,073 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-03 05:43:24,074 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:24,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2144233693] [2024-11-03 05:43:24,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2144233693] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 05:43:24,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 05:43:24,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [16] total 33 [2024-11-03 05:43:24,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288316265] [2024-11-03 05:43:24,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 05:43:24,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-03 05:43:24,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:24,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-03 05:43:24,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=963, Unknown=0, NotChecked=0, Total=1056 [2024-11-03 05:43:24,076 INFO L87 Difference]: Start difference. First operand 108 states and 135 transitions. Second operand has 19 states, 16 states have (on average 1.5) internal successors, (24), 14 states have internal predecessors, (24), 5 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-03 05:43:24,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:24,493 INFO L93 Difference]: Finished difference Result 165 states and 215 transitions. [2024-11-03 05:43:24,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-03 05:43:24,493 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 1.5) internal successors, (24), 14 states have internal predecessors, (24), 5 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) Word has length 44 [2024-11-03 05:43:24,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:24,495 INFO L225 Difference]: With dead ends: 165 [2024-11-03 05:43:24,495 INFO L226 Difference]: Without dead ends: 157 [2024-11-03 05:43:24,496 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=123, Invalid=1209, Unknown=0, NotChecked=0, Total=1332 [2024-11-03 05:43:24,496 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 40 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 525 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:24,497 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 525 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-03 05:43:24,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2024-11-03 05:43:24,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 111. [2024-11-03 05:43:24,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 84 states have (on average 1.2261904761904763) internal successors, (103), 85 states have internal predecessors, (103), 16 states have call successors, (16), 9 states have call predecessors, (16), 10 states have return successors, (19), 16 states have call predecessors, (19), 15 states have call successors, (19) [2024-11-03 05:43:24,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 138 transitions. [2024-11-03 05:43:24,508 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 138 transitions. Word has length 44 [2024-11-03 05:43:24,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:24,508 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 138 transitions. [2024-11-03 05:43:24,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 1.5) internal successors, (24), 14 states have internal predecessors, (24), 5 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-03 05:43:24,508 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 138 transitions. [2024-11-03 05:43:24,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-03 05:43:24,509 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:24,510 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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, 1, 1, 1, 1] [2024-11-03 05:43:24,517 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (6)] Ended with exit code 0 [2024-11-03 05:43:24,711 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:24,711 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:24,712 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:24,712 INFO L85 PathProgramCache]: Analyzing trace with hash -919754838, now seen corresponding path program 1 times [2024-11-03 05:43:24,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:24,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [662284298] [2024-11-03 05:43:24,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:24,713 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:24,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:24,715 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:43:24,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (7)] Waiting until timeout for monitored process [2024-11-03 05:43:24,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:24,787 WARN L253 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-03 05:43:24,789 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:25,075 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-03 05:43:25,076 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:25,211 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-03 05:43:25,211 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:25,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [662284298] [2024-11-03 05:43:25,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [662284298] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 05:43:25,212 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 05:43:25,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21, 6] imperfect sequences [] total 23 [2024-11-03 05:43:25,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568701473] [2024-11-03 05:43:25,212 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 05:43:25,212 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-03 05:43:25,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:25,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-03 05:43:25,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2024-11-03 05:43:25,213 INFO L87 Difference]: Start difference. First operand 111 states and 138 transitions. Second operand has 23 states, 20 states have (on average 2.05) internal successors, (41), 16 states have internal predecessors, (41), 4 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 6 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-03 05:43:25,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:25,658 INFO L93 Difference]: Finished difference Result 167 states and 215 transitions. [2024-11-03 05:43:25,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-03 05:43:25,659 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 2.05) internal successors, (41), 16 states have internal predecessors, (41), 4 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 6 states have call predecessors, (10), 3 states have call successors, (10) Word has length 46 [2024-11-03 05:43:25,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:25,660 INFO L225 Difference]: With dead ends: 167 [2024-11-03 05:43:25,660 INFO L226 Difference]: Without dead ends: 136 [2024-11-03 05:43:25,661 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=840, Unknown=0, NotChecked=0, Total=930 [2024-11-03 05:43:25,661 INFO L432 NwaCegarLoop]: 41 mSDtfsCounter, 47 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 683 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:25,662 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 708 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 683 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-03 05:43:25,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-03 05:43:25,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 92. [2024-11-03 05:43:25,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 69 states have (on average 1.2608695652173914) internal successors, (87), 71 states have internal predecessors, (87), 14 states have call successors, (14), 7 states have call predecessors, (14), 8 states have return successors, (16), 13 states have call predecessors, (16), 13 states have call successors, (16) [2024-11-03 05:43:25,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 117 transitions. [2024-11-03 05:43:25,669 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 117 transitions. Word has length 46 [2024-11-03 05:43:25,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:25,669 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 117 transitions. [2024-11-03 05:43:25,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 2.05) internal successors, (41), 16 states have internal predecessors, (41), 4 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 6 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-03 05:43:25,670 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 117 transitions. [2024-11-03 05:43:25,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-03 05:43:25,670 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:25,670 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:43:25,678 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (7)] Ended with exit code 0 [2024-11-03 05:43:25,872 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:25,873 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:25,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:25,873 INFO L85 PathProgramCache]: Analyzing trace with hash -168643793, now seen corresponding path program 1 times [2024-11-03 05:43:25,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:25,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [550525996] [2024-11-03 05:43:25,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:25,873 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:25,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:25,876 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:43:25,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2024-11-03 05:43:25,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:25,922 WARN L253 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-03 05:43:25,924 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:26,249 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-03 05:43:26,250 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:26,689 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-03 05:43:26,689 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:26,690 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [550525996] [2024-11-03 05:43:26,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [550525996] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 05:43:26,690 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 05:43:26,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 13] total 35 [2024-11-03 05:43:26,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60867031] [2024-11-03 05:43:26,690 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 05:43:26,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-03 05:43:26,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:26,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-03 05:43:26,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1105, Unknown=0, NotChecked=0, Total=1190 [2024-11-03 05:43:26,691 INFO L87 Difference]: Start difference. First operand 92 states and 117 transitions. Second operand has 35 states, 33 states have (on average 1.8484848484848484) internal successors, (61), 29 states have internal predecessors, (61), 5 states have call successors, (9), 2 states have call predecessors, (9), 8 states have return successors, (10), 8 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-03 05:43:28,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:28,361 INFO L93 Difference]: Finished difference Result 176 states and 236 transitions. [2024-11-03 05:43:28,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-03 05:43:28,363 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 33 states have (on average 1.8484848484848484) internal successors, (61), 29 states have internal predecessors, (61), 5 states have call successors, (9), 2 states have call predecessors, (9), 8 states have return successors, (10), 8 states have call predecessors, (10), 4 states have call successors, (10) Word has length 48 [2024-11-03 05:43:28,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:28,364 INFO L225 Difference]: With dead ends: 176 [2024-11-03 05:43:28,364 INFO L226 Difference]: Without dead ends: 159 [2024-11-03 05:43:28,365 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=239, Invalid=3067, Unknown=0, NotChecked=0, Total=3306 [2024-11-03 05:43:28,366 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 155 mSDsluCounter, 1224 mSDsCounter, 0 mSdLazyCounter, 1487 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 1278 SdHoareTripleChecker+Invalid, 1539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 1487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:28,366 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 1278 Invalid, 1539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 1487 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-03 05:43:28,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-11-03 05:43:28,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 108. [2024-11-03 05:43:28,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 81 states have (on average 1.2222222222222223) internal successors, (99), 84 states have internal predecessors, (99), 16 states have call successors, (16), 7 states have call predecessors, (16), 10 states have return successors, (24), 16 states have call predecessors, (24), 15 states have call successors, (24) [2024-11-03 05:43:28,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 139 transitions. [2024-11-03 05:43:28,384 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 139 transitions. Word has length 48 [2024-11-03 05:43:28,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:28,384 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 139 transitions. [2024-11-03 05:43:28,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 33 states have (on average 1.8484848484848484) internal successors, (61), 29 states have internal predecessors, (61), 5 states have call successors, (9), 2 states have call predecessors, (9), 8 states have return successors, (10), 8 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-03 05:43:28,385 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 139 transitions. [2024-11-03 05:43:28,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-03 05:43:28,385 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:28,386 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:43:28,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2024-11-03 05:43:28,587 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:28,588 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:28,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:28,588 INFO L85 PathProgramCache]: Analyzing trace with hash 291178745, now seen corresponding path program 2 times [2024-11-03 05:43:28,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:28,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [140157364] [2024-11-03 05:43:28,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:28,589 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:28,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:28,595 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:43:28,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2024-11-03 05:43:28,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:28,680 WARN L253 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-03 05:43:28,684 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:29,028 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-03 05:43:29,029 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:29,439 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-03 05:43:29,439 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:29,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [140157364] [2024-11-03 05:43:29,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [140157364] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 05:43:29,439 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 05:43:29,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 13] total 35 [2024-11-03 05:43:29,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024443479] [2024-11-03 05:43:29,439 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 05:43:29,440 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-03 05:43:29,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:29,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-03 05:43:29,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=1105, Unknown=0, NotChecked=0, Total=1190 [2024-11-03 05:43:29,441 INFO L87 Difference]: Start difference. First operand 108 states and 139 transitions. Second operand has 35 states, 32 states have (on average 1.875) internal successors, (60), 29 states have internal predecessors, (60), 5 states have call successors, (8), 2 states have call predecessors, (8), 8 states have return successors, (10), 7 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-03 05:43:31,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:31,237 INFO L93 Difference]: Finished difference Result 200 states and 275 transitions. [2024-11-03 05:43:31,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2024-11-03 05:43:31,237 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 32 states have (on average 1.875) internal successors, (60), 29 states have internal predecessors, (60), 5 states have call successors, (8), 2 states have call predecessors, (8), 8 states have return successors, (10), 7 states have call predecessors, (10), 4 states have call successors, (10) Word has length 48 [2024-11-03 05:43:31,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:31,239 INFO L225 Difference]: With dead ends: 200 [2024-11-03 05:43:31,239 INFO L226 Difference]: Without dead ends: 188 [2024-11-03 05:43:31,240 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 60 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=234, Invalid=3072, Unknown=0, NotChecked=0, Total=3306 [2024-11-03 05:43:31,241 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 129 mSDsluCounter, 1697 mSDsCounter, 0 mSdLazyCounter, 1881 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 1770 SdHoareTripleChecker+Invalid, 1921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:31,241 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 1770 Invalid, 1921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1881 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-03 05:43:31,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-11-03 05:43:31,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 121. [2024-11-03 05:43:31,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 91 states have (on average 1.2087912087912087) internal successors, (110), 94 states have internal predecessors, (110), 18 states have call successors, (18), 8 states have call predecessors, (18), 11 states have return successors, (31), 18 states have call predecessors, (31), 17 states have call successors, (31) [2024-11-03 05:43:31,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 159 transitions. [2024-11-03 05:43:31,251 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 159 transitions. Word has length 48 [2024-11-03 05:43:31,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:31,251 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 159 transitions. [2024-11-03 05:43:31,251 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 32 states have (on average 1.875) internal successors, (60), 29 states have internal predecessors, (60), 5 states have call successors, (8), 2 states have call predecessors, (8), 8 states have return successors, (10), 7 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-03 05:43:31,251 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 159 transitions. [2024-11-03 05:43:31,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-03 05:43:31,252 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:31,252 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:43:31,258 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (9)] Ended with exit code 0 [2024-11-03 05:43:31,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:31,454 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:31,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:31,454 INFO L85 PathProgramCache]: Analyzing trace with hash -744862915, now seen corresponding path program 1 times [2024-11-03 05:43:31,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:31,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [357664227] [2024-11-03 05:43:31,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:31,455 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:31,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:31,459 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:43:31,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (10)] Waiting until timeout for monitored process [2024-11-03 05:43:31,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:31,521 INFO L255 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 46 conjuncts are in the unsatisfiable core [2024-11-03 05:43:31,529 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:31,980 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-03 05:43:31,980 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:33,059 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-03 05:43:33,059 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:33,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [357664227] [2024-11-03 05:43:33,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [357664227] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 05:43:33,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 05:43:33,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 22 [2024-11-03 05:43:33,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002062917] [2024-11-03 05:43:33,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 05:43:33,060 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-03 05:43:33,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:33,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-03 05:43:33,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2024-11-03 05:43:33,060 INFO L87 Difference]: Start difference. First operand 121 states and 159 transitions. Second operand has 10 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-03 05:43:33,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:33,640 INFO L93 Difference]: Finished difference Result 140 states and 184 transitions. [2024-11-03 05:43:33,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-03 05:43:33,641 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 49 [2024-11-03 05:43:33,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:33,642 INFO L225 Difference]: With dead ends: 140 [2024-11-03 05:43:33,642 INFO L226 Difference]: Without dead ends: 138 [2024-11-03 05:43:33,643 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 74 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2024-11-03 05:43:33,643 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 16 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:33,644 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 485 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-03 05:43:33,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2024-11-03 05:43:33,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 127. [2024-11-03 05:43:33,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 94 states have (on average 1.202127659574468) internal successors, (113), 99 states have internal predecessors, (113), 20 states have call successors, (20), 9 states have call predecessors, (20), 12 states have return successors, (33), 18 states have call predecessors, (33), 19 states have call successors, (33) [2024-11-03 05:43:33,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 166 transitions. [2024-11-03 05:43:33,657 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 166 transitions. Word has length 49 [2024-11-03 05:43:33,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:33,657 INFO L471 AbstractCegarLoop]: Abstraction has 127 states and 166 transitions. [2024-11-03 05:43:33,657 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.5) internal successors, (28), 8 states have internal predecessors, (28), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-03 05:43:33,658 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 166 transitions. [2024-11-03 05:43:33,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-03 05:43:33,658 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:33,659 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:43:33,669 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (10)] Ended with exit code 0 [2024-11-03 05:43:33,859 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:33,859 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:33,860 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:33,860 INFO L85 PathProgramCache]: Analyzing trace with hash -325172767, now seen corresponding path program 1 times [2024-11-03 05:43:33,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:33,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1493860214] [2024-11-03 05:43:33,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:33,860 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:33,860 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:33,861 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:43:33,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2024-11-03 05:43:33,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:33,908 WARN L253 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-03 05:43:33,910 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:34,313 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-03 05:43:34,313 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:34,843 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-03 05:43:34,844 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:34,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1493860214] [2024-11-03 05:43:34,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1493860214] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 05:43:34,844 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 05:43:34,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 12] total 33 [2024-11-03 05:43:34,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140950080] [2024-11-03 05:43:34,844 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 05:43:34,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-03 05:43:34,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:34,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-03 05:43:34,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=968, Unknown=0, NotChecked=0, Total=1056 [2024-11-03 05:43:34,850 INFO L87 Difference]: Start difference. First operand 127 states and 166 transitions. Second operand has 33 states, 30 states have (on average 2.1) internal successors, (63), 27 states have internal predecessors, (63), 5 states have call successors, (8), 2 states have call predecessors, (8), 8 states have return successors, (10), 7 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-03 05:43:35,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:35,990 INFO L93 Difference]: Finished difference Result 205 states and 289 transitions. [2024-11-03 05:43:35,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-03 05:43:35,991 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 30 states have (on average 2.1) internal successors, (63), 27 states have internal predecessors, (63), 5 states have call successors, (8), 2 states have call predecessors, (8), 8 states have return successors, (10), 7 states have call predecessors, (10), 4 states have call successors, (10) Word has length 50 [2024-11-03 05:43:35,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:35,992 INFO L225 Difference]: With dead ends: 205 [2024-11-03 05:43:35,992 INFO L226 Difference]: Without dead ends: 190 [2024-11-03 05:43:35,993 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=171, Invalid=1899, Unknown=0, NotChecked=0, Total=2070 [2024-11-03 05:43:35,994 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 55 mSDsluCounter, 896 mSDsCounter, 0 mSdLazyCounter, 1275 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 940 SdHoareTripleChecker+Invalid, 1292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 1275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:35,994 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 940 Invalid, 1292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 1275 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-03 05:43:35,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2024-11-03 05:43:36,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 137. [2024-11-03 05:43:36,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 101 states have (on average 1.188118811881188) internal successors, (120), 107 states have internal predecessors, (120), 21 states have call successors, (21), 9 states have call predecessors, (21), 14 states have return successors, (41), 20 states have call predecessors, (41), 20 states have call successors, (41) [2024-11-03 05:43:36,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 182 transitions. [2024-11-03 05:43:36,019 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 182 transitions. Word has length 50 [2024-11-03 05:43:36,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:36,019 INFO L471 AbstractCegarLoop]: Abstraction has 137 states and 182 transitions. [2024-11-03 05:43:36,019 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 30 states have (on average 2.1) internal successors, (63), 27 states have internal predecessors, (63), 5 states have call successors, (8), 2 states have call predecessors, (8), 8 states have return successors, (10), 7 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-03 05:43:36,019 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 182 transitions. [2024-11-03 05:43:36,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-03 05:43:36,020 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:36,025 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:43:36,028 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (11)] Ended with exit code 0 [2024-11-03 05:43:36,226 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:36,226 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:36,226 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:36,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1846975685, now seen corresponding path program 1 times [2024-11-03 05:43:36,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:36,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [192234479] [2024-11-03 05:43:36,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:36,227 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:36,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:36,229 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:43:36,229 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2024-11-03 05:43:36,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:36,304 INFO L255 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 47 conjuncts are in the unsatisfiable core [2024-11-03 05:43:36,306 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:45,354 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-03 05:43:45,354 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:46,026 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-03 05:43:46,026 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:46,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [192234479] [2024-11-03 05:43:46,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [192234479] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 05:43:46,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 05:43:46,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 22 [2024-11-03 05:43:46,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930680064] [2024-11-03 05:43:46,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 05:43:46,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-03 05:43:46,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:46,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-03 05:43:46,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=393, Unknown=3, NotChecked=0, Total=462 [2024-11-03 05:43:46,028 INFO L87 Difference]: Start difference. First operand 137 states and 182 transitions. Second operand has 10 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-03 05:43:46,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:46,242 INFO L93 Difference]: Finished difference Result 146 states and 193 transitions. [2024-11-03 05:43:46,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-03 05:43:46,243 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 50 [2024-11-03 05:43:46,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:46,244 INFO L225 Difference]: With dead ends: 146 [2024-11-03 05:43:46,244 INFO L226 Difference]: Without dead ends: 142 [2024-11-03 05:43:46,244 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 75 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 9.3s TimeCoverageRelationStatistics Valid=80, Invalid=469, Unknown=3, NotChecked=0, Total=552 [2024-11-03 05:43:46,245 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 16 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:46,245 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 479 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-03 05:43:46,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-03 05:43:46,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 133. [2024-11-03 05:43:46,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 100 states have (on average 1.18) internal successors, (118), 103 states have internal predecessors, (118), 19 states have call successors, (19), 9 states have call predecessors, (19), 13 states have return successors, (39), 20 states have call predecessors, (39), 18 states have call successors, (39) [2024-11-03 05:43:46,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 176 transitions. [2024-11-03 05:43:46,253 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 176 transitions. Word has length 50 [2024-11-03 05:43:46,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:46,253 INFO L471 AbstractCegarLoop]: Abstraction has 133 states and 176 transitions. [2024-11-03 05:43:46,253 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 8 states have (on average 3.625) internal successors, (29), 8 states have internal predecessors, (29), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-03 05:43:46,253 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 176 transitions. [2024-11-03 05:43:46,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-03 05:43:46,254 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:46,254 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2024-11-03 05:43:46,259 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (12)] Ended with exit code 0 [2024-11-03 05:43:46,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:46,456 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:46,456 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:46,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1592416888, now seen corresponding path program 1 times [2024-11-03 05:43:46,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:46,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1620621173] [2024-11-03 05:43:46,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:46,457 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:46,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:46,459 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:43:46,460 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2024-11-03 05:43:46,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:46,508 WARN L253 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-03 05:43:46,511 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:46,749 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-03 05:43:46,750 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:47,027 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-03 05:43:47,027 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:47,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1620621173] [2024-11-03 05:43:47,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1620621173] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 05:43:47,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 05:43:47,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 8] total 20 [2024-11-03 05:43:47,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084109211] [2024-11-03 05:43:47,027 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 05:43:47,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-03 05:43:47,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:47,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-03 05:43:47,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2024-11-03 05:43:47,028 INFO L87 Difference]: Start difference. First operand 133 states and 176 transitions. Second operand has 20 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 18 states have internal predecessors, (51), 4 states have call successors, (7), 2 states have call predecessors, (7), 6 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-03 05:43:47,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:47,452 INFO L93 Difference]: Finished difference Result 201 states and 298 transitions. [2024-11-03 05:43:47,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-03 05:43:47,456 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 18 states have internal predecessors, (51), 4 states have call successors, (7), 2 states have call predecessors, (7), 6 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) Word has length 54 [2024-11-03 05:43:47,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:47,460 INFO L225 Difference]: With dead ends: 201 [2024-11-03 05:43:47,460 INFO L226 Difference]: Without dead ends: 188 [2024-11-03 05:43:47,461 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 86 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2024-11-03 05:43:47,461 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 64 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:47,462 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 785 Invalid, 451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-03 05:43:47,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2024-11-03 05:43:47,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 149. [2024-11-03 05:43:47,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 110 states have (on average 1.1818181818181819) internal successors, (130), 115 states have internal predecessors, (130), 23 states have call successors, (23), 9 states have call predecessors, (23), 15 states have return successors, (61), 24 states have call predecessors, (61), 22 states have call successors, (61) [2024-11-03 05:43:47,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 214 transitions. [2024-11-03 05:43:47,487 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 214 transitions. Word has length 54 [2024-11-03 05:43:47,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:47,488 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 214 transitions. [2024-11-03 05:43:47,488 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 18 states have internal predecessors, (51), 4 states have call successors, (7), 2 states have call predecessors, (7), 6 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-03 05:43:47,488 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 214 transitions. [2024-11-03 05:43:47,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-03 05:43:47,489 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:47,489 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:43:47,497 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (13)] Ended with exit code 0 [2024-11-03 05:43:47,690 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:47,690 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:47,690 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:47,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1169715062, now seen corresponding path program 1 times [2024-11-03 05:43:47,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:47,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676515356] [2024-11-03 05:43:47,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:47,691 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:47,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:47,692 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:43:47,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2024-11-03 05:43:47,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:47,766 WARN L253 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-11-03 05:43:47,769 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:48,151 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-03 05:43:48,151 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:48,706 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-03 05:43:48,707 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:48,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1676515356] [2024-11-03 05:43:48,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1676515356] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 05:43:48,707 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 05:43:48,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13] total 29 [2024-11-03 05:43:48,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869370241] [2024-11-03 05:43:48,707 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 05:43:48,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-03 05:43:48,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:48,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-03 05:43:48,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=738, Unknown=0, NotChecked=0, Total=812 [2024-11-03 05:43:48,709 INFO L87 Difference]: Start difference. First operand 149 states and 214 transitions. Second operand has 29 states, 27 states have (on average 2.111111111111111) internal successors, (57), 24 states have internal predecessors, (57), 4 states have call successors, (7), 2 states have call predecessors, (7), 7 states have return successors, (10), 6 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-03 05:43:49,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:49,835 INFO L93 Difference]: Finished difference Result 183 states and 262 transitions. [2024-11-03 05:43:49,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-03 05:43:49,836 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 2.111111111111111) internal successors, (57), 24 states have internal predecessors, (57), 4 states have call successors, (7), 2 states have call predecessors, (7), 7 states have return successors, (10), 6 states have call predecessors, (10), 3 states have call successors, (10) Word has length 54 [2024-11-03 05:43:49,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:49,837 INFO L225 Difference]: With dead ends: 183 [2024-11-03 05:43:49,837 INFO L226 Difference]: Without dead ends: 172 [2024-11-03 05:43:49,838 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 77 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=131, Invalid=1351, Unknown=0, NotChecked=0, Total=1482 [2024-11-03 05:43:49,839 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 47 mSDsluCounter, 1185 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1244 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:49,839 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 1244 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1151 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-03 05:43:49,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-11-03 05:43:49,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 151. [2024-11-03 05:43:49,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 111 states have (on average 1.1801801801801801) internal successors, (131), 116 states have internal predecessors, (131), 24 states have call successors, (24), 9 states have call predecessors, (24), 15 states have return successors, (64), 25 states have call predecessors, (64), 23 states have call successors, (64) [2024-11-03 05:43:49,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 219 transitions. [2024-11-03 05:43:49,852 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 219 transitions. Word has length 54 [2024-11-03 05:43:49,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:49,853 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 219 transitions. [2024-11-03 05:43:49,853 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 2.111111111111111) internal successors, (57), 24 states have internal predecessors, (57), 4 states have call successors, (7), 2 states have call predecessors, (7), 7 states have return successors, (10), 6 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-03 05:43:49,853 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 219 transitions. [2024-11-03 05:43:49,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-03 05:43:49,854 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:49,854 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:43:49,859 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (14)] Ended with exit code 0 [2024-11-03 05:43:50,055 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:50,056 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:50,056 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:50,056 INFO L85 PathProgramCache]: Analyzing trace with hash -805345669, now seen corresponding path program 1 times [2024-11-03 05:43:50,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:50,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [379177158] [2024-11-03 05:43:50,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:50,056 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:50,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:50,057 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:43:50,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2024-11-03 05:43:50,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:50,115 WARN L253 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-03 05:43:50,118 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:50,740 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-03 05:43:50,741 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:51,586 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-03 05:43:51,586 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:51,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [379177158] [2024-11-03 05:43:51,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [379177158] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 05:43:51,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 05:43:51,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [24] total 35 [2024-11-03 05:43:51,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084284100] [2024-11-03 05:43:51,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 05:43:51,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-03 05:43:51,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:51,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-03 05:43:51,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1088, Unknown=0, NotChecked=0, Total=1190 [2024-11-03 05:43:51,587 INFO L87 Difference]: Start difference. First operand 151 states and 219 transitions. Second operand has 13 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-03 05:43:51,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:51,977 INFO L93 Difference]: Finished difference Result 170 states and 240 transitions. [2024-11-03 05:43:51,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-03 05:43:51,977 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 59 [2024-11-03 05:43:51,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:51,978 INFO L225 Difference]: With dead ends: 170 [2024-11-03 05:43:51,978 INFO L226 Difference]: Without dead ends: 163 [2024-11-03 05:43:51,979 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 81 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=110, Invalid=1150, Unknown=0, NotChecked=0, Total=1260 [2024-11-03 05:43:51,979 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 20 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:51,979 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 694 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-03 05:43:51,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2024-11-03 05:43:51,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 151. [2024-11-03 05:43:51,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 111 states have (on average 1.1801801801801801) internal successors, (131), 116 states have internal predecessors, (131), 24 states have call successors, (24), 9 states have call predecessors, (24), 15 states have return successors, (63), 25 states have call predecessors, (63), 23 states have call successors, (63) [2024-11-03 05:43:51,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 218 transitions. [2024-11-03 05:43:51,989 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 218 transitions. Word has length 59 [2024-11-03 05:43:51,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:51,989 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 218 transitions. [2024-11-03 05:43:51,989 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 3.5) internal successors, (42), 11 states have internal predecessors, (42), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-03 05:43:51,989 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 218 transitions. [2024-11-03 05:43:51,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-03 05:43:51,990 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:51,990 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:43:51,995 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (15)] Ended with exit code 0 [2024-11-03 05:43:52,192 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:52,192 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:52,192 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:52,192 INFO L85 PathProgramCache]: Analyzing trace with hash -2126059193, now seen corresponding path program 1 times [2024-11-03 05:43:52,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:52,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [8851812] [2024-11-03 05:43:52,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:52,193 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:52,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:52,195 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:43:52,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2024-11-03 05:43:52,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:52,255 WARN L253 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-03 05:43:52,257 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:52,688 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-03 05:43:52,689 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:53,073 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 10 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-03 05:43:53,074 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:53,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [8851812] [2024-11-03 05:43:53,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [8851812] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 05:43:53,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 05:43:53,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 9] total 25 [2024-11-03 05:43:53,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011026704] [2024-11-03 05:43:53,074 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 05:43:53,074 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-03 05:43:53,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:53,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-03 05:43:53,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=535, Unknown=0, NotChecked=0, Total=600 [2024-11-03 05:43:53,075 INFO L87 Difference]: Start difference. First operand 151 states and 218 transitions. Second operand has 25 states, 25 states have (on average 2.88) internal successors, (72), 22 states have internal predecessors, (72), 5 states have call successors, (8), 2 states have call predecessors, (8), 7 states have return successors, (11), 8 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-03 05:43:53,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:53,716 INFO L93 Difference]: Finished difference Result 186 states and 266 transitions. [2024-11-03 05:43:53,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-03 05:43:53,717 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.88) internal successors, (72), 22 states have internal predecessors, (72), 5 states have call successors, (8), 2 states have call predecessors, (8), 7 states have return successors, (11), 8 states have call predecessors, (11), 4 states have call successors, (11) Word has length 59 [2024-11-03 05:43:53,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:53,718 INFO L225 Difference]: With dead ends: 186 [2024-11-03 05:43:53,718 INFO L226 Difference]: Without dead ends: 140 [2024-11-03 05:43:53,718 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 93 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=93, Invalid=777, Unknown=0, NotChecked=0, Total=870 [2024-11-03 05:43:53,719 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 49 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 912 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:53,719 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 912 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-03 05:43:53,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-03 05:43:53,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 121. [2024-11-03 05:43:53,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 89 states have (on average 1.1910112359550562) internal successors, (106), 93 states have internal predecessors, (106), 19 states have call successors, (19), 7 states have call predecessors, (19), 12 states have return successors, (56), 20 states have call predecessors, (56), 18 states have call successors, (56) [2024-11-03 05:43:53,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 181 transitions. [2024-11-03 05:43:53,727 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 181 transitions. Word has length 59 [2024-11-03 05:43:53,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:53,727 INFO L471 AbstractCegarLoop]: Abstraction has 121 states and 181 transitions. [2024-11-03 05:43:53,727 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.88) internal successors, (72), 22 states have internal predecessors, (72), 5 states have call successors, (8), 2 states have call predecessors, (8), 7 states have return successors, (11), 8 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-03 05:43:53,727 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 181 transitions. [2024-11-03 05:43:53,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-03 05:43:53,728 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:53,728 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:43:53,732 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (16)] Ended with exit code 0 [2024-11-03 05:43:53,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:53,930 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:53,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:53,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1024200387, now seen corresponding path program 2 times [2024-11-03 05:43:53,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:53,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1961096896] [2024-11-03 05:43:53,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:53,930 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:53,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:53,932 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:43:53,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2024-11-03 05:43:53,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:53,999 WARN L253 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-03 05:43:54,002 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:54,360 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 8 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-03 05:43:54,361 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:54,700 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-03 05:43:54,700 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:54,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1961096896] [2024-11-03 05:43:54,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1961096896] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-03 05:43:54,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-03 05:43:54,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [22] total 27 [2024-11-03 05:43:54,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865907744] [2024-11-03 05:43:54,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-03 05:43:54,704 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-03 05:43:54,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:54,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-03 05:43:54,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2024-11-03 05:43:54,705 INFO L87 Difference]: Start difference. First operand 121 states and 181 transitions. Second operand has 10 states, 10 states have (on average 4.2) internal successors, (42), 9 states have internal predecessors, (42), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-03 05:43:54,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:54,793 INFO L93 Difference]: Finished difference Result 135 states and 198 transitions. [2024-11-03 05:43:54,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-03 05:43:54,793 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 9 states have internal predecessors, (42), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 59 [2024-11-03 05:43:54,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:54,799 INFO L225 Difference]: With dead ends: 135 [2024-11-03 05:43:54,799 INFO L226 Difference]: Without dead ends: 106 [2024-11-03 05:43:54,800 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 89 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=82, Invalid=674, Unknown=0, NotChecked=0, Total=756 [2024-11-03 05:43:54,800 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 23 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:54,800 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 408 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-03 05:43:54,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2024-11-03 05:43:54,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 103. [2024-11-03 05:43:54,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 75 states have (on average 1.2133333333333334) internal successors, (91), 80 states have internal predecessors, (91), 16 states have call successors, (16), 5 states have call predecessors, (16), 11 states have return successors, (50), 17 states have call predecessors, (50), 15 states have call successors, (50) [2024-11-03 05:43:54,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 157 transitions. [2024-11-03 05:43:54,815 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 157 transitions. Word has length 59 [2024-11-03 05:43:54,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:54,816 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 157 transitions. [2024-11-03 05:43:54,816 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.2) internal successors, (42), 9 states have internal predecessors, (42), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-03 05:43:54,816 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 157 transitions. [2024-11-03 05:43:54,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-03 05:43:54,816 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:54,816 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:43:54,820 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2024-11-03 05:43:55,017 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:55,017 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:55,017 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:55,020 INFO L85 PathProgramCache]: Analyzing trace with hash 909519997, now seen corresponding path program 1 times [2024-11-03 05:43:55,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:55,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1625752491] [2024-11-03 05:43:55,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:55,020 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:55,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:55,022 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:43:55,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2024-11-03 05:43:55,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:55,083 WARN L253 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 68 conjuncts are in the unsatisfiable core [2024-11-03 05:43:55,085 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:55,407 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-03 05:43:55,407 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:55,746 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-03 05:43:55,747 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:55,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1625752491] [2024-11-03 05:43:55,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1625752491] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 05:43:55,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 05:43:55,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 8] total 23 [2024-11-03 05:43:55,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311380207] [2024-11-03 05:43:55,747 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 05:43:55,747 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-03 05:43:55,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:55,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-03 05:43:55,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=439, Unknown=0, NotChecked=0, Total=506 [2024-11-03 05:43:55,748 INFO L87 Difference]: Start difference. First operand 103 states and 157 transitions. Second operand has 23 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 21 states have internal predecessors, (65), 5 states have call successors, (8), 2 states have call predecessors, (8), 7 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-03 05:43:56,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:56,285 INFO L93 Difference]: Finished difference Result 131 states and 196 transitions. [2024-11-03 05:43:56,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-03 05:43:56,286 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 21 states have internal predecessors, (65), 5 states have call successors, (8), 2 states have call predecessors, (8), 7 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) Word has length 63 [2024-11-03 05:43:56,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:56,287 INFO L225 Difference]: With dead ends: 131 [2024-11-03 05:43:56,287 INFO L226 Difference]: Without dead ends: 116 [2024-11-03 05:43:56,287 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 101 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2024-11-03 05:43:56,288 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 36 mSDsluCounter, 913 mSDsCounter, 0 mSdLazyCounter, 724 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 971 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 724 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:56,288 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 971 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 724 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-03 05:43:56,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-03 05:43:56,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 106. [2024-11-03 05:43:56,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 77 states have (on average 1.2077922077922079) internal successors, (93), 83 states have internal predecessors, (93), 16 states have call successors, (16), 5 states have call predecessors, (16), 12 states have return successors, (53), 17 states have call predecessors, (53), 15 states have call successors, (53) [2024-11-03 05:43:56,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 162 transitions. [2024-11-03 05:43:56,295 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 162 transitions. Word has length 63 [2024-11-03 05:43:56,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:56,296 INFO L471 AbstractCegarLoop]: Abstraction has 106 states and 162 transitions. [2024-11-03 05:43:56,296 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.8260869565217392) internal successors, (65), 21 states have internal predecessors, (65), 5 states have call successors, (8), 2 states have call predecessors, (8), 7 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-03 05:43:56,296 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 162 transitions. [2024-11-03 05:43:56,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-03 05:43:56,297 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:56,297 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:43:56,303 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (18)] Ended with exit code 0 [2024-11-03 05:43:56,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:56,499 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:56,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:56,499 INFO L85 PathProgramCache]: Analyzing trace with hash -177633806, now seen corresponding path program 3 times [2024-11-03 05:43:56,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:56,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1210758848] [2024-11-03 05:43:56,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:56,499 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:56,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:56,507 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:43:56,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (19)] Waiting until timeout for monitored process [2024-11-03 05:43:56,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:56,569 WARN L253 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 67 conjuncts are in the unsatisfiable core [2024-11-03 05:43:56,571 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:56,919 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-03 05:43:56,919 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:57,238 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-03 05:43:57,238 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:57,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1210758848] [2024-11-03 05:43:57,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1210758848] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 05:43:57,238 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 05:43:57,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 9] total 22 [2024-11-03 05:43:57,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701908772] [2024-11-03 05:43:57,240 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 05:43:57,241 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-03 05:43:57,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:57,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-03 05:43:57,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=400, Unknown=0, NotChecked=0, Total=462 [2024-11-03 05:43:57,242 INFO L87 Difference]: Start difference. First operand 106 states and 162 transitions. Second operand has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 20 states have internal predecessors, (65), 5 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (11), 7 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-03 05:43:57,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:57,585 INFO L93 Difference]: Finished difference Result 127 states and 188 transitions. [2024-11-03 05:43:57,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-03 05:43:57,585 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 20 states have internal predecessors, (65), 5 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (11), 7 states have call predecessors, (11), 4 states have call successors, (11) Word has length 63 [2024-11-03 05:43:57,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:57,586 INFO L225 Difference]: With dead ends: 127 [2024-11-03 05:43:57,586 INFO L226 Difference]: Without dead ends: 114 [2024-11-03 05:43:57,586 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 101 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2024-11-03 05:43:57,587 INFO L432 NwaCegarLoop]: 46 mSDtfsCounter, 17 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:57,587 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 651 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-03 05:43:57,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-03 05:43:57,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 104. [2024-11-03 05:43:57,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 76 states have (on average 1.2105263157894737) internal successors, (92), 82 states have internal predecessors, (92), 15 states have call successors, (15), 5 states have call predecessors, (15), 12 states have return successors, (48), 16 states have call predecessors, (48), 14 states have call successors, (48) [2024-11-03 05:43:57,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 155 transitions. [2024-11-03 05:43:57,593 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 155 transitions. Word has length 63 [2024-11-03 05:43:57,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:57,594 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 155 transitions. [2024-11-03 05:43:57,594 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.9545454545454546) internal successors, (65), 20 states have internal predecessors, (65), 5 states have call successors, (8), 2 states have call predecessors, (8), 6 states have return successors, (11), 7 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-03 05:43:57,594 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 155 transitions. [2024-11-03 05:43:57,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-03 05:43:57,594 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:57,594 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:43:57,599 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (19)] Ended with exit code 0 [2024-11-03 05:43:57,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:57,796 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:57,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:57,796 INFO L85 PathProgramCache]: Analyzing trace with hash -356161941, now seen corresponding path program 2 times [2024-11-03 05:43:57,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:57,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [675516972] [2024-11-03 05:43:57,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:57,797 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:57,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:57,801 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:43:57,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2024-11-03 05:43:57,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:57,859 WARN L253 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-11-03 05:43:57,861 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:58,229 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-03 05:43:58,230 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:43:58,723 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-03 05:43:58,723 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:43:58,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [675516972] [2024-11-03 05:43:58,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [675516972] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 05:43:58,723 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 05:43:58,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 11] total 27 [2024-11-03 05:43:58,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334807875] [2024-11-03 05:43:58,724 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 05:43:58,724 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-03 05:43:58,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:43:58,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-03 05:43:58,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=607, Unknown=0, NotChecked=0, Total=702 [2024-11-03 05:43:58,725 INFO L87 Difference]: Start difference. First operand 104 states and 155 transitions. Second operand has 27 states, 26 states have (on average 2.5) internal successors, (65), 24 states have internal predecessors, (65), 6 states have call successors, (9), 2 states have call predecessors, (9), 7 states have return successors, (12), 7 states have call predecessors, (12), 5 states have call successors, (12) [2024-11-03 05:43:59,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:43:59,164 INFO L93 Difference]: Finished difference Result 125 states and 181 transitions. [2024-11-03 05:43:59,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-03 05:43:59,166 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.5) internal successors, (65), 24 states have internal predecessors, (65), 6 states have call successors, (9), 2 states have call predecessors, (9), 7 states have return successors, (12), 7 states have call predecessors, (12), 5 states have call successors, (12) Word has length 63 [2024-11-03 05:43:59,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:43:59,167 INFO L225 Difference]: With dead ends: 125 [2024-11-03 05:43:59,167 INFO L226 Difference]: Without dead ends: 111 [2024-11-03 05:43:59,167 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 97 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=140, Invalid=790, Unknown=0, NotChecked=0, Total=930 [2024-11-03 05:43:59,171 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 57 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-03 05:43:59,171 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [58 Valid, 648 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-03 05:43:59,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2024-11-03 05:43:59,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 101. [2024-11-03 05:43:59,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 74 states have (on average 1.2027027027027026) internal successors, (89), 79 states have internal predecessors, (89), 15 states have call successors, (15), 5 states have call predecessors, (15), 11 states have return successors, (45), 16 states have call predecessors, (45), 14 states have call successors, (45) [2024-11-03 05:43:59,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 149 transitions. [2024-11-03 05:43:59,187 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 149 transitions. Word has length 63 [2024-11-03 05:43:59,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:43:59,187 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 149 transitions. [2024-11-03 05:43:59,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.5) internal successors, (65), 24 states have internal predecessors, (65), 6 states have call successors, (9), 2 states have call predecessors, (9), 7 states have return successors, (12), 7 states have call predecessors, (12), 5 states have call successors, (12) [2024-11-03 05:43:59,187 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 149 transitions. [2024-11-03 05:43:59,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-03 05:43:59,188 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:43:59,188 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:43:59,193 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (20)] Ended with exit code 0 [2024-11-03 05:43:59,388 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:59,389 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:43:59,389 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:43:59,389 INFO L85 PathProgramCache]: Analyzing trace with hash -2130957302, now seen corresponding path program 1 times [2024-11-03 05:43:59,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:43:59,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1394249682] [2024-11-03 05:43:59,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:43:59,389 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:43:59,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:43:59,390 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:43:59,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (21)] Waiting until timeout for monitored process [2024-11-03 05:43:59,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:43:59,451 WARN L253 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 70 conjuncts are in the unsatisfiable core [2024-11-03 05:43:59,453 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:43:59,823 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-03 05:43:59,824 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:44:00,174 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-03 05:44:00,175 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:44:00,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1394249682] [2024-11-03 05:44:00,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1394249682] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 05:44:00,175 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 05:44:00,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 9] total 24 [2024-11-03 05:44:00,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037320148] [2024-11-03 05:44:00,175 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 05:44:00,175 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-03 05:44:00,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:44:00,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-03 05:44:00,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=478, Unknown=0, NotChecked=0, Total=552 [2024-11-03 05:44:00,177 INFO L87 Difference]: Start difference. First operand 101 states and 149 transitions. Second operand has 24 states, 24 states have (on average 2.875) internal successors, (69), 22 states have internal predecessors, (69), 5 states have call successors, (8), 2 states have call predecessors, (8), 7 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-03 05:44:00,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:44:00,637 INFO L93 Difference]: Finished difference Result 122 states and 175 transitions. [2024-11-03 05:44:00,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-03 05:44:00,637 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 2.875) internal successors, (69), 22 states have internal predecessors, (69), 5 states have call successors, (8), 2 states have call predecessors, (8), 7 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) Word has length 65 [2024-11-03 05:44:00,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:44:00,638 INFO L225 Difference]: With dead ends: 122 [2024-11-03 05:44:00,638 INFO L226 Difference]: Without dead ends: 108 [2024-11-03 05:44:00,639 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 103 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2024-11-03 05:44:00,639 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 17 mSDsluCounter, 736 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 781 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-03 05:44:00,640 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 781 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-03 05:44:00,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-03 05:44:00,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 98. [2024-11-03 05:44:00,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 72 states have (on average 1.1944444444444444) internal successors, (86), 76 states have internal predecessors, (86), 15 states have call successors, (15), 5 states have call predecessors, (15), 10 states have return successors, (41), 16 states have call predecessors, (41), 14 states have call successors, (41) [2024-11-03 05:44:00,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 142 transitions. [2024-11-03 05:44:00,653 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 142 transitions. Word has length 65 [2024-11-03 05:44:00,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:44:00,653 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 142 transitions. [2024-11-03 05:44:00,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 2.875) internal successors, (69), 22 states have internal predecessors, (69), 5 states have call successors, (8), 2 states have call predecessors, (8), 7 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2024-11-03 05:44:00,653 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 142 transitions. [2024-11-03 05:44:00,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-03 05:44:00,654 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:44:00,654 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2024-11-03 05:44:00,656 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (21)] Ended with exit code 0 [2024-11-03 05:44:00,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:44:00,856 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:44:00,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:44:00,856 INFO L85 PathProgramCache]: Analyzing trace with hash -2124690312, now seen corresponding path program 1 times [2024-11-03 05:44:00,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:44:00,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740789227] [2024-11-03 05:44:00,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:44:00,856 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:44:00,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:44:00,857 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:44:00,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (22)] Waiting until timeout for monitored process [2024-11-03 05:44:00,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:44:00,933 WARN L253 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-03 05:44:00,935 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:44:01,304 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-03 05:44:01,305 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:44:01,958 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-03 05:44:01,959 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:44:01,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1740789227] [2024-11-03 05:44:01,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1740789227] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 05:44:01,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 05:44:01,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 13] total 33 [2024-11-03 05:44:01,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401365201] [2024-11-03 05:44:01,959 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 05:44:01,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-03 05:44:01,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:44:01,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-03 05:44:01,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=974, Unknown=0, NotChecked=0, Total=1056 [2024-11-03 05:44:01,961 INFO L87 Difference]: Start difference. First operand 98 states and 142 transitions. Second operand has 33 states, 31 states have (on average 2.4516129032258065) internal successors, (76), 28 states have internal predecessors, (76), 8 states have call successors, (11), 2 states have call predecessors, (11), 7 states have return successors, (14), 10 states have call predecessors, (14), 7 states have call successors, (14) [2024-11-03 05:44:03,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:44:03,080 INFO L93 Difference]: Finished difference Result 122 states and 171 transitions. [2024-11-03 05:44:03,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-03 05:44:03,081 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 2.4516129032258065) internal successors, (76), 28 states have internal predecessors, (76), 8 states have call successors, (11), 2 states have call predecessors, (11), 7 states have return successors, (14), 10 states have call predecessors, (14), 7 states have call successors, (14) Word has length 72 [2024-11-03 05:44:03,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:44:03,081 INFO L225 Difference]: With dead ends: 122 [2024-11-03 05:44:03,081 INFO L226 Difference]: Without dead ends: 113 [2024-11-03 05:44:03,082 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 109 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=160, Invalid=1910, Unknown=0, NotChecked=0, Total=2070 [2024-11-03 05:44:03,083 INFO L432 NwaCegarLoop]: 59 mSDtfsCounter, 63 mSDsluCounter, 1158 mSDsCounter, 0 mSdLazyCounter, 1118 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 1217 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-03 05:44:03,083 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 1217 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1118 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-03 05:44:03,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2024-11-03 05:44:03,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 98. [2024-11-03 05:44:03,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 72 states have (on average 1.1944444444444444) internal successors, (86), 76 states have internal predecessors, (86), 15 states have call successors, (15), 5 states have call predecessors, (15), 10 states have return successors, (40), 16 states have call predecessors, (40), 14 states have call successors, (40) [2024-11-03 05:44:03,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 141 transitions. [2024-11-03 05:44:03,088 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 141 transitions. Word has length 72 [2024-11-03 05:44:03,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:44:03,089 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 141 transitions. [2024-11-03 05:44:03,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 2.4516129032258065) internal successors, (76), 28 states have internal predecessors, (76), 8 states have call successors, (11), 2 states have call predecessors, (11), 7 states have return successors, (14), 10 states have call predecessors, (14), 7 states have call successors, (14) [2024-11-03 05:44:03,089 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 141 transitions. [2024-11-03 05:44:03,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-03 05:44:03,089 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:44:03,089 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:44:03,094 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (22)] Ended with exit code 0 [2024-11-03 05:44:03,291 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:44:03,291 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:44:03,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:44:03,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1279345645, now seen corresponding path program 1 times [2024-11-03 05:44:03,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:44:03,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [954050009] [2024-11-03 05:44:03,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:44:03,292 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:44:03,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:44:03,294 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:44:03,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (23)] Waiting until timeout for monitored process [2024-11-03 05:44:03,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:44:03,369 WARN L253 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-11-03 05:44:03,371 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:44:04,475 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-03 05:44:04,476 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:44:07,600 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-03 05:44:07,600 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:44:07,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [954050009] [2024-11-03 05:44:07,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [954050009] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 05:44:07,600 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 05:44:07,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 22] total 44 [2024-11-03 05:44:07,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111561880] [2024-11-03 05:44:07,600 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 05:44:07,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-03 05:44:07,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:44:07,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-03 05:44:07,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1730, Unknown=0, NotChecked=0, Total=1892 [2024-11-03 05:44:07,602 INFO L87 Difference]: Start difference. First operand 98 states and 141 transitions. Second operand has 44 states, 42 states have (on average 1.8333333333333333) internal successors, (77), 40 states have internal predecessors, (77), 8 states have call successors, (11), 2 states have call predecessors, (11), 7 states have return successors, (14), 10 states have call predecessors, (14), 7 states have call successors, (14) [2024-11-03 05:44:17,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:44:17,290 INFO L93 Difference]: Finished difference Result 163 states and 227 transitions. [2024-11-03 05:44:17,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2024-11-03 05:44:17,292 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 42 states have (on average 1.8333333333333333) internal successors, (77), 40 states have internal predecessors, (77), 8 states have call successors, (11), 2 states have call predecessors, (11), 7 states have return successors, (14), 10 states have call predecessors, (14), 7 states have call successors, (14) Word has length 72 [2024-11-03 05:44:17,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:44:17,293 INFO L225 Difference]: With dead ends: 163 [2024-11-03 05:44:17,293 INFO L226 Difference]: Without dead ends: 139 [2024-11-03 05:44:17,295 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 98 SyntacticMatches, 2 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1155 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=660, Invalid=6822, Unknown=0, NotChecked=0, Total=7482 [2024-11-03 05:44:17,296 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 88 mSDsluCounter, 1085 mSDsCounter, 0 mSdLazyCounter, 2351 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 1129 SdHoareTripleChecker+Invalid, 2411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 2351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-03 05:44:17,296 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 1129 Invalid, 2411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 2351 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-03 05:44:17,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-11-03 05:44:17,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 108. [2024-11-03 05:44:17,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 81 states have (on average 1.1975308641975309) internal successors, (97), 84 states have internal predecessors, (97), 16 states have call successors, (16), 6 states have call predecessors, (16), 10 states have return successors, (39), 17 states have call predecessors, (39), 15 states have call successors, (39) [2024-11-03 05:44:17,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 152 transitions. [2024-11-03 05:44:17,368 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 152 transitions. Word has length 72 [2024-11-03 05:44:17,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:44:17,369 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 152 transitions. [2024-11-03 05:44:17,369 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 42 states have (on average 1.8333333333333333) internal successors, (77), 40 states have internal predecessors, (77), 8 states have call successors, (11), 2 states have call predecessors, (11), 7 states have return successors, (14), 10 states have call predecessors, (14), 7 states have call successors, (14) [2024-11-03 05:44:17,369 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 152 transitions. [2024-11-03 05:44:17,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-03 05:44:17,374 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:44:17,374 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2024-11-03 05:44:17,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (23)] Forceful destruction successful, exit code 0 [2024-11-03 05:44:17,575 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:44:17,575 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:44:17,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:44:17,575 INFO L85 PathProgramCache]: Analyzing trace with hash 106055100, now seen corresponding path program 2 times [2024-11-03 05:44:17,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:44:17,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565748877] [2024-11-03 05:44:17,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:44:17,576 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:44:17,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:44:17,581 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:44:17,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (24)] Waiting until timeout for monitored process [2024-11-03 05:44:17,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:44:17,670 WARN L253 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 65 conjuncts are in the unsatisfiable core [2024-11-03 05:44:17,672 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:44:18,049 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-03 05:44:18,050 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:44:18,698 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-03 05:44:18,698 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:44:18,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [565748877] [2024-11-03 05:44:18,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [565748877] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 05:44:18,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 05:44:18,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 13] total 33 [2024-11-03 05:44:18,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784617646] [2024-11-03 05:44:18,699 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 05:44:18,699 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-03 05:44:18,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:44:18,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-03 05:44:18,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=974, Unknown=0, NotChecked=0, Total=1056 [2024-11-03 05:44:18,700 INFO L87 Difference]: Start difference. First operand 108 states and 152 transitions. Second operand has 33 states, 31 states have (on average 2.4516129032258065) internal successors, (76), 28 states have internal predecessors, (76), 8 states have call successors, (11), 2 states have call predecessors, (11), 7 states have return successors, (14), 10 states have call predecessors, (14), 7 states have call successors, (14) [2024-11-03 05:44:19,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:44:19,771 INFO L93 Difference]: Finished difference Result 132 states and 181 transitions. [2024-11-03 05:44:19,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-03 05:44:19,771 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 2.4516129032258065) internal successors, (76), 28 states have internal predecessors, (76), 8 states have call successors, (11), 2 states have call predecessors, (11), 7 states have return successors, (14), 10 states have call predecessors, (14), 7 states have call successors, (14) Word has length 72 [2024-11-03 05:44:19,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:44:19,772 INFO L225 Difference]: With dead ends: 132 [2024-11-03 05:44:19,772 INFO L226 Difference]: Without dead ends: 121 [2024-11-03 05:44:19,773 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 109 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=160, Invalid=1910, Unknown=0, NotChecked=0, Total=2070 [2024-11-03 05:44:19,773 INFO L432 NwaCegarLoop]: 57 mSDtfsCounter, 55 mSDsluCounter, 1211 mSDsCounter, 0 mSdLazyCounter, 1201 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 1268 SdHoareTripleChecker+Invalid, 1215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-03 05:44:19,773 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 1268 Invalid, 1215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1201 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-03 05:44:19,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2024-11-03 05:44:19,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 108. [2024-11-03 05:44:19,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 81 states have (on average 1.1975308641975309) internal successors, (97), 84 states have internal predecessors, (97), 16 states have call successors, (16), 6 states have call predecessors, (16), 10 states have return successors, (37), 17 states have call predecessors, (37), 15 states have call successors, (37) [2024-11-03 05:44:19,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 150 transitions. [2024-11-03 05:44:19,793 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 150 transitions. Word has length 72 [2024-11-03 05:44:19,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:44:19,793 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 150 transitions. [2024-11-03 05:44:19,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 2.4516129032258065) internal successors, (76), 28 states have internal predecessors, (76), 8 states have call successors, (11), 2 states have call predecessors, (11), 7 states have return successors, (14), 10 states have call predecessors, (14), 7 states have call successors, (14) [2024-11-03 05:44:19,797 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 150 transitions. [2024-11-03 05:44:19,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-03 05:44:19,798 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:44:19,798 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:44:19,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (24)] Forceful destruction successful, exit code 0 [2024-11-03 05:44:19,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:44:19,999 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:44:19,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:44:19,999 INFO L85 PathProgramCache]: Analyzing trace with hash -784876239, now seen corresponding path program 2 times [2024-11-03 05:44:19,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:44:19,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [130303836] [2024-11-03 05:44:19,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:44:19,999 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:44:19,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:44:20,000 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:44:20,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (25)] Waiting until timeout for monitored process [2024-11-03 05:44:20,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:44:20,088 WARN L253 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 72 conjuncts are in the unsatisfiable core [2024-11-03 05:44:20,091 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:44:21,445 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-03 05:44:21,445 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:44:24,234 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-03 05:44:24,234 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:44:24,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [130303836] [2024-11-03 05:44:24,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [130303836] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 05:44:24,235 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 05:44:24,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 22] total 44 [2024-11-03 05:44:24,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361558333] [2024-11-03 05:44:24,235 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 05:44:24,236 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-03 05:44:24,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:44:24,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-03 05:44:24,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=1736, Unknown=0, NotChecked=0, Total=1892 [2024-11-03 05:44:24,240 INFO L87 Difference]: Start difference. First operand 108 states and 150 transitions. Second operand has 44 states, 42 states have (on average 1.8333333333333333) internal successors, (77), 40 states have internal predecessors, (77), 8 states have call successors, (11), 2 states have call predecessors, (11), 7 states have return successors, (14), 10 states have call predecessors, (14), 7 states have call successors, (14) [2024-11-03 05:44:32,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:44:32,060 INFO L93 Difference]: Finished difference Result 169 states and 232 transitions. [2024-11-03 05:44:32,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2024-11-03 05:44:32,061 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 42 states have (on average 1.8333333333333333) internal successors, (77), 40 states have internal predecessors, (77), 8 states have call successors, (11), 2 states have call predecessors, (11), 7 states have return successors, (14), 10 states have call predecessors, (14), 7 states have call successors, (14) Word has length 72 [2024-11-03 05:44:32,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:44:32,062 INFO L225 Difference]: With dead ends: 169 [2024-11-03 05:44:32,062 INFO L226 Difference]: Without dead ends: 160 [2024-11-03 05:44:32,064 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 98 SyntacticMatches, 2 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 888 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=510, Invalid=5810, Unknown=0, NotChecked=0, Total=6320 [2024-11-03 05:44:32,064 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 73 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 2066 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 2127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-03 05:44:32,065 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 987 Invalid, 2127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 2066 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-03 05:44:32,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-11-03 05:44:32,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 116. [2024-11-03 05:44:32,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 88 states have (on average 1.2159090909090908) internal successors, (107), 91 states have internal predecessors, (107), 17 states have call successors, (17), 7 states have call predecessors, (17), 10 states have return successors, (37), 17 states have call predecessors, (37), 16 states have call successors, (37) [2024-11-03 05:44:32,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 161 transitions. [2024-11-03 05:44:32,078 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 161 transitions. Word has length 72 [2024-11-03 05:44:32,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:44:32,078 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 161 transitions. [2024-11-03 05:44:32,078 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 42 states have (on average 1.8333333333333333) internal successors, (77), 40 states have internal predecessors, (77), 8 states have call successors, (11), 2 states have call predecessors, (11), 7 states have return successors, (14), 10 states have call predecessors, (14), 7 states have call successors, (14) [2024-11-03 05:44:32,078 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 161 transitions. [2024-11-03 05:44:32,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-03 05:44:32,083 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:44:32,083 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:44:32,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (25)] Forceful destruction successful, exit code 0 [2024-11-03 05:44:32,283 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:44:32,283 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:44:32,284 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:44:32,284 INFO L85 PathProgramCache]: Analyzing trace with hash 1250321149, now seen corresponding path program 1 times [2024-11-03 05:44:32,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:44:32,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1147173444] [2024-11-03 05:44:32,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:44:32,284 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:44:32,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:44:32,286 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:44:32,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (26)] Waiting until timeout for monitored process [2024-11-03 05:44:32,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:44:32,371 WARN L253 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-11-03 05:44:32,373 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:44:33,380 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-03 05:44:33,380 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:44:36,585 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-03 05:44:36,586 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:44:36,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1147173444] [2024-11-03 05:44:36,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1147173444] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 05:44:36,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 05:44:36,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 22] total 44 [2024-11-03 05:44:36,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915784808] [2024-11-03 05:44:36,586 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 05:44:36,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-03 05:44:36,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:44:36,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-03 05:44:36,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=204, Invalid=1688, Unknown=0, NotChecked=0, Total=1892 [2024-11-03 05:44:36,588 INFO L87 Difference]: Start difference. First operand 116 states and 161 transitions. Second operand has 44 states, 43 states have (on average 1.8604651162790697) internal successors, (80), 41 states have internal predecessors, (80), 8 states have call successors, (11), 2 states have call predecessors, (11), 7 states have return successors, (14), 10 states have call predecessors, (14), 7 states have call successors, (14) [2024-11-03 05:44:41,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:44:41,518 INFO L93 Difference]: Finished difference Result 170 states and 226 transitions. [2024-11-03 05:44:41,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-03 05:44:41,519 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 1.8604651162790697) internal successors, (80), 41 states have internal predecessors, (80), 8 states have call successors, (11), 2 states have call predecessors, (11), 7 states have return successors, (14), 10 states have call predecessors, (14), 7 states have call successors, (14) Word has length 74 [2024-11-03 05:44:41,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:44:41,520 INFO L225 Difference]: With dead ends: 170 [2024-11-03 05:44:41,520 INFO L226 Difference]: Without dead ends: 143 [2024-11-03 05:44:41,521 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 102 SyntacticMatches, 2 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 412 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=429, Invalid=3603, Unknown=0, NotChecked=0, Total=4032 [2024-11-03 05:44:41,522 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 69 mSDsluCounter, 1104 mSDsCounter, 0 mSdLazyCounter, 1966 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 1152 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 1966 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-03 05:44:41,522 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 1152 Invalid, 1990 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 1966 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-03 05:44:41,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2024-11-03 05:44:41,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 120. [2024-11-03 05:44:41,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 92 states have (on average 1.2065217391304348) internal successors, (111), 93 states have internal predecessors, (111), 17 states have call successors, (17), 8 states have call predecessors, (17), 10 states have return successors, (32), 18 states have call predecessors, (32), 16 states have call successors, (32) [2024-11-03 05:44:41,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 160 transitions. [2024-11-03 05:44:41,536 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 160 transitions. Word has length 74 [2024-11-03 05:44:41,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:44:41,537 INFO L471 AbstractCegarLoop]: Abstraction has 120 states and 160 transitions. [2024-11-03 05:44:41,537 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 1.8604651162790697) internal successors, (80), 41 states have internal predecessors, (80), 8 states have call successors, (11), 2 states have call predecessors, (11), 7 states have return successors, (14), 10 states have call predecessors, (14), 7 states have call successors, (14) [2024-11-03 05:44:41,537 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 160 transitions. [2024-11-03 05:44:41,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-03 05:44:41,538 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:44:41,538 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:44:41,544 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (26)] Ended with exit code 0 [2024-11-03 05:44:41,740 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:44:41,740 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:44:41,741 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:44:41,741 INFO L85 PathProgramCache]: Analyzing trace with hash 1455113153, now seen corresponding path program 2 times [2024-11-03 05:44:41,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:44:41,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [656707642] [2024-11-03 05:44:41,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:44:41,741 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:44:41,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:44:41,743 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:44:41,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2024-11-03 05:44:41,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:44:41,834 WARN L253 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-11-03 05:44:41,837 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:44:42,920 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 6 proven. 15 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-03 05:44:42,921 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 05:44:46,106 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-03 05:44:46,106 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 05:44:46,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [656707642] [2024-11-03 05:44:46,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [656707642] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 05:44:46,107 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 05:44:46,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 22] total 44 [2024-11-03 05:44:46,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226595942] [2024-11-03 05:44:46,108 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 05:44:46,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-03 05:44:46,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 05:44:46,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-03 05:44:46,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=1699, Unknown=0, NotChecked=0, Total=1892 [2024-11-03 05:44:46,109 INFO L87 Difference]: Start difference. First operand 120 states and 160 transitions. Second operand has 44 states, 43 states have (on average 1.8604651162790697) internal successors, (80), 41 states have internal predecessors, (80), 8 states have call successors, (11), 2 states have call predecessors, (11), 7 states have return successors, (14), 10 states have call predecessors, (14), 7 states have call successors, (14) [2024-11-03 05:44:50,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 05:44:50,909 INFO L93 Difference]: Finished difference Result 166 states and 216 transitions. [2024-11-03 05:44:50,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-03 05:44:50,910 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 43 states have (on average 1.8604651162790697) internal successors, (80), 41 states have internal predecessors, (80), 8 states have call successors, (11), 2 states have call predecessors, (11), 7 states have return successors, (14), 10 states have call predecessors, (14), 7 states have call successors, (14) Word has length 74 [2024-11-03 05:44:50,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 05:44:50,911 INFO L225 Difference]: With dead ends: 166 [2024-11-03 05:44:50,911 INFO L226 Difference]: Without dead ends: 153 [2024-11-03 05:44:50,912 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 102 SyntacticMatches, 2 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=389, Invalid=3393, Unknown=0, NotChecked=0, Total=3782 [2024-11-03 05:44:50,912 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 129 mSDsluCounter, 1123 mSDsCounter, 0 mSdLazyCounter, 1848 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 1177 SdHoareTripleChecker+Invalid, 1907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1848 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-03 05:44:50,912 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 1177 Invalid, 1907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1848 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-03 05:44:50,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-11-03 05:44:50,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 126. [2024-11-03 05:44:50,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 97 states have (on average 1.2061855670103092) internal successors, (117), 98 states have internal predecessors, (117), 18 states have call successors, (18), 9 states have call predecessors, (18), 10 states have return successors, (32), 18 states have call predecessors, (32), 17 states have call successors, (32) [2024-11-03 05:44:50,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 167 transitions. [2024-11-03 05:44:50,941 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 167 transitions. Word has length 74 [2024-11-03 05:44:50,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 05:44:50,941 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 167 transitions. [2024-11-03 05:44:50,941 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 43 states have (on average 1.8604651162790697) internal successors, (80), 41 states have internal predecessors, (80), 8 states have call successors, (11), 2 states have call predecessors, (11), 7 states have return successors, (14), 10 states have call predecessors, (14), 7 states have call successors, (14) [2024-11-03 05:44:50,941 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 167 transitions. [2024-11-03 05:44:50,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2024-11-03 05:44:50,942 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 05:44:50,942 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 05:44:50,947 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (27)] Ended with exit code 0 [2024-11-03 05:44:51,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt [2024-11-03 05:44:51,145 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 05:44:51,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 05:44:51,145 INFO L85 PathProgramCache]: Analyzing trace with hash 2116115221, now seen corresponding path program 1 times [2024-11-03 05:44:51,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 05:44:51,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1753072660] [2024-11-03 05:44:51,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 05:44:51,145 INFO L173 SolverBuilder]: Constructing external solver with command: cvc5 --incremental --print-success --lang smt [2024-11-03 05:44:51,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 [2024-11-03 05:44:51,147 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 05:44:51,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc5 --incremental --print-success --lang smt (28)] Waiting until timeout for monitored process [2024-11-03 05:44:51,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 05:44:51,238 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-11-03 05:44:51,241 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 05:45:03,962 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-03 05:45:03,963 INFO L311 TraceCheckSpWp]: Computing backward predicates...