/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --cacsl2boogietranslator.allow.undefined.functions true --traceabstraction.smt.solver External_ModelsAndUnsatCoreMode --traceabstraction.command.for.external.solver 'cvc4 --incremental --print-success --lang smt' -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-63.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 01:18:38,316 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 01:18:38,390 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2024-11-03 01:18:38,394 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 01:18:38,395 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 01:18:38,424 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 01:18:38,426 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 01:18:38,426 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 01:18:38,427 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 01:18:38,427 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 01:18:38,427 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 01:18:38,428 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 01:18:38,428 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 01:18:38,429 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 01:18:38,429 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 01:18:38,429 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 01:18:38,430 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 01:18:38,430 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 01:18:38,430 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 01:18:38,430 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 01:18:38,431 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 01:18:38,434 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 01:18:38,434 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 01:18:38,434 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 01:18:38,435 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 01:18:38,435 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 01:18:38,435 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 01:18:38,435 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 01:18:38,436 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 01:18:38,436 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 01:18:38,438 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 01:18:38,439 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 01:18:38,439 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 01:18:38,439 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 01:18:38,439 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 01:18:38,440 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 01:18:38,440 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 01:18:38,440 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 01:18:38,440 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 01:18:38,440 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 01:18:38,441 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 01:18:38,442 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 01:18:38,442 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 01:18:38,442 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 01:18:38,442 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt [2024-11-03 01:18:38,643 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 01:18:38,667 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 01:18:38,670 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 01:18:38,671 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 01:18:38,671 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 01:18:38,672 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-63.i [2024-11-03 01:18:40,141 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 01:18:40,378 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 01:18:40,378 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-63.i [2024-11-03 01:18:40,389 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05ff9f644/b0e2a0fda0f04e63aec6b539db05a66b/FLAGd93dece56 [2024-11-03 01:18:40,403 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05ff9f644/b0e2a0fda0f04e63aec6b539db05a66b [2024-11-03 01:18:40,405 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 01:18:40,407 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 01:18:40,408 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 01:18:40,408 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 01:18:40,415 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 01:18:40,416 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:18:40" (1/1) ... [2024-11-03 01:18:40,417 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@274e5a58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:18:40, skipping insertion in model container [2024-11-03 01:18:40,417 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 01:18:40" (1/1) ... [2024-11-03 01:18:40,461 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 01:18:40,634 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-63.i[916,929] [2024-11-03 01:18:40,790 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 01:18:40,811 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 01:18:40,825 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_operatoramount_amount250_file-63.i[916,929] [2024-11-03 01:18:40,893 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 01:18:40,916 INFO L204 MainTranslator]: Completed translation [2024-11-03 01:18:40,917 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:18:40 WrapperNode [2024-11-03 01:18:40,917 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 01:18:40,918 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 01:18:40,918 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 01:18:40,918 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 01:18:40,925 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:18:40" (1/1) ... [2024-11-03 01:18:40,946 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:18:40" (1/1) ... [2024-11-03 01:18:40,980 INFO L138 Inliner]: procedures = 27, calls = 60, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 350 [2024-11-03 01:18:40,980 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 01:18:40,981 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 01:18:40,981 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 01:18:40,981 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 01:18:40,991 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:18:40" (1/1) ... [2024-11-03 01:18:40,991 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:18:40" (1/1) ... [2024-11-03 01:18:41,000 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:18:40" (1/1) ... [2024-11-03 01:18:41,041 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-03 01:18:41,041 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:18:40" (1/1) ... [2024-11-03 01:18:41,042 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:18:40" (1/1) ... [2024-11-03 01:18:41,074 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:18:40" (1/1) ... [2024-11-03 01:18:41,082 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:18:40" (1/1) ... [2024-11-03 01:18:41,095 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:18:40" (1/1) ... [2024-11-03 01:18:41,101 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:18:40" (1/1) ... [2024-11-03 01:18:41,116 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 01:18:41,117 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 01:18:41,117 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 01:18:41,118 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 01:18:41,118 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:18:40" (1/1) ... [2024-11-03 01:18:41,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 01:18:41,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 01:18:41,154 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-03 01:18:41,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-03 01:18:41,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 01:18:41,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 01:18:41,188 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-03 01:18:41,189 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-03 01:18:41,189 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 01:18:41,189 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 01:18:41,307 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 01:18:41,309 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 01:18:49,820 INFO L? ?]: Removed 44 outVars from TransFormulas that were not future-live. [2024-11-03 01:18:49,821 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 01:18:49,839 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 01:18:49,839 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-03 01:18:49,840 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:18:49 BoogieIcfgContainer [2024-11-03 01:18:49,840 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 01:18:49,845 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 01:18:49,845 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 01:18:49,849 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 01:18:49,849 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 01:18:40" (1/3) ... [2024-11-03 01:18:49,850 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4087cece and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:18:49, skipping insertion in model container [2024-11-03 01:18:49,850 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 01:18:40" (2/3) ... [2024-11-03 01:18:49,851 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4087cece and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 01:18:49, skipping insertion in model container [2024-11-03 01:18:49,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 01:18:49" (3/3) ... [2024-11-03 01:18:49,852 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_operatoramount_amount250_file-63.i [2024-11-03 01:18:49,867 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 01:18:49,868 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 01:18:49,931 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 01:18:49,937 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;@58b7d333, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 01:18:49,937 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 01:18:49,943 INFO L276 IsEmpty]: Start isEmpty. Operand has 147 states, 97 states have (on average 1.4845360824742269) internal successors, (144), 98 states have internal predecessors, (144), 47 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-11-03 01:18:49,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2024-11-03 01:18:49,960 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:18:49,960 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 01:18:49,961 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:18:49,965 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:18:49,966 INFO L85 PathProgramCache]: Analyzing trace with hash -369639437, now seen corresponding path program 1 times [2024-11-03 01:18:49,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:18:49,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [709614507] [2024-11-03 01:18:49,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:18:49,977 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:18:49,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:18:49,980 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 01:18:49,982 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Waiting until timeout for monitored process [2024-11-03 01:18:50,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:18:50,881 INFO L255 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-03 01:18:50,908 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:18:50,965 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 4232 trivial. 0 not checked. [2024-11-03 01:18:50,965 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:18:52,493 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 4232 trivial. 0 not checked. [2024-11-03 01:18:52,495 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:18:52,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [709614507] [2024-11-03 01:18:52,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [709614507] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 01:18:52,495 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 01:18:52,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-03 01:18:52,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146023984] [2024-11-03 01:18:52,498 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 01:18:52,503 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-03 01:18:52,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:18:52,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-03 01:18:52,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 01:18:52,529 INFO L87 Difference]: Start difference. First operand has 147 states, 97 states have (on average 1.4845360824742269) internal successors, (144), 98 states have internal predecessors, (144), 47 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) Second operand has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 1 states have call successors, (47), 1 states have call predecessors, (47), 2 states have return successors, (47), 2 states have call predecessors, (47), 1 states have call successors, (47) [2024-11-03 01:18:52,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 01:18:52,568 INFO L93 Difference]: Finished difference Result 286 states and 515 transitions. [2024-11-03 01:18:52,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-03 01:18:52,571 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 1 states have call successors, (47), 1 states have call predecessors, (47), 2 states have return successors, (47), 2 states have call predecessors, (47), 1 states have call successors, (47) Word has length 306 [2024-11-03 01:18:52,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 01:18:52,579 INFO L225 Difference]: With dead ends: 286 [2024-11-03 01:18:52,579 INFO L226 Difference]: Without dead ends: 142 [2024-11-03 01:18:52,583 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 610 GetRequests, 610 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 01:18:52,586 INFO L432 NwaCegarLoop]: 227 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-03 01:18:52,587 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 01:18:52,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-03 01:18:52,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142. [2024-11-03 01:18:52,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 93 states have (on average 1.4301075268817205) internal successors, (133), 93 states have internal predecessors, (133), 47 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2024-11-03 01:18:52,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 227 transitions. [2024-11-03 01:18:52,647 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 227 transitions. Word has length 306 [2024-11-03 01:18:52,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 01:18:52,647 INFO L471 AbstractCegarLoop]: Abstraction has 142 states and 227 transitions. [2024-11-03 01:18:52,648 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 38.0) internal successors, (76), 2 states have internal predecessors, (76), 1 states have call successors, (47), 1 states have call predecessors, (47), 2 states have return successors, (47), 2 states have call predecessors, (47), 1 states have call successors, (47) [2024-11-03 01:18:52,648 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 227 transitions. [2024-11-03 01:18:52,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2024-11-03 01:18:52,654 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:18:52,654 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 01:18:52,665 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Forceful destruction successful, exit code 0 [2024-11-03 01:18:52,855 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 01:18:52,855 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:18:52,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:18:52,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1358618737, now seen corresponding path program 1 times [2024-11-03 01:18:52,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:18:52,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1923667423] [2024-11-03 01:18:52,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:18:52,857 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:18:52,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:18:52,859 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 01:18:52,861 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Waiting until timeout for monitored process [2024-11-03 01:18:53,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:18:53,559 INFO L255 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-03 01:18:53,571 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:18:53,913 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-11-03 01:18:53,914 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:18:55,473 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-11-03 01:18:55,474 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:18:55,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1923667423] [2024-11-03 01:18:55,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1923667423] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 01:18:55,474 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 01:18:55,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2024-11-03 01:18:55,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013872657] [2024-11-03 01:18:55,475 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 01:18:55,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-03 01:18:55,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:18:55,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-03 01:18:55,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 01:18:55,481 INFO L87 Difference]: Start difference. First operand 142 states and 227 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2024-11-03 01:18:59,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 01:19:03,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 01:19:03,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 01:19:03,869 INFO L93 Difference]: Finished difference Result 337 states and 536 transitions. [2024-11-03 01:19:03,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-03 01:19:03,870 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) Word has length 306 [2024-11-03 01:19:03,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 01:19:03,876 INFO L225 Difference]: With dead ends: 337 [2024-11-03 01:19:03,876 INFO L226 Difference]: Without dead ends: 198 [2024-11-03 01:19:03,877 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 610 GetRequests, 609 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-03 01:19:03,878 INFO L432 NwaCegarLoop]: 262 mSDtfsCounter, 72 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2024-11-03 01:19:03,879 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 469 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 2 Unknown, 0 Unchecked, 8.3s Time] [2024-11-03 01:19:03,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2024-11-03 01:19:03,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 195. [2024-11-03 01:19:03,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 137 states have (on average 1.4452554744525548) internal successors, (198), 138 states have internal predecessors, (198), 55 states have call successors, (55), 2 states have call predecessors, (55), 2 states have return successors, (55), 54 states have call predecessors, (55), 55 states have call successors, (55) [2024-11-03 01:19:03,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 308 transitions. [2024-11-03 01:19:03,920 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 308 transitions. Word has length 306 [2024-11-03 01:19:03,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 01:19:03,922 INFO L471 AbstractCegarLoop]: Abstraction has 195 states and 308 transitions. [2024-11-03 01:19:03,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2024-11-03 01:19:03,923 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 308 transitions. [2024-11-03 01:19:03,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2024-11-03 01:19:03,930 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:19:03,930 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 01:19:03,939 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (3)] Ended with exit code 0 [2024-11-03 01:19:04,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 01:19:04,132 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:19:04,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:19:04,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1013120525, now seen corresponding path program 1 times [2024-11-03 01:19:04,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:19:04,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1606328617] [2024-11-03 01:19:04,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:19:04,134 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:19:04,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:19:04,136 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 01:19:04,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2024-11-03 01:19:04,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:19:04,762 INFO L255 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-03 01:19:04,769 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:19:09,408 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-11-03 01:19:09,408 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:19:12,098 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-11-03 01:19:12,098 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:19:12,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1606328617] [2024-11-03 01:19:12,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1606328617] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 01:19:12,099 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 01:19:12,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [] total 4 [2024-11-03 01:19:12,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119727440] [2024-11-03 01:19:12,099 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 01:19:12,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-03 01:19:12,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:19:12,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-03 01:19:12,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-03 01:19:12,102 INFO L87 Difference]: Start difference. First operand 195 states and 308 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 1 states have call successors, (94), 2 states have call predecessors, (94), 2 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) [2024-11-03 01:19:16,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 01:19:20,912 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 01:19:24,917 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 01:19:29,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 01:19:33,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 01:19:37,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 01:19:41,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 01:19:41,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 01:19:41,282 INFO L93 Difference]: Finished difference Result 758 states and 1205 transitions. [2024-11-03 01:19:41,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-03 01:19:41,351 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 1 states have call successors, (94), 2 states have call predecessors, (94), 2 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) Word has length 306 [2024-11-03 01:19:41,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 01:19:41,358 INFO L225 Difference]: With dead ends: 758 [2024-11-03 01:19:41,359 INFO L226 Difference]: Without dead ends: 566 [2024-11-03 01:19:41,360 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 612 GetRequests, 609 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-03 01:19:41,363 INFO L432 NwaCegarLoop]: 308 mSDtfsCounter, 289 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 107 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 817 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.0s IncrementalHoareTripleChecker+Time [2024-11-03 01:19:41,363 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 817 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 17 Invalid, 7 Unknown, 0 Unchecked, 29.0s Time] [2024-11-03 01:19:41,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2024-11-03 01:19:41,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 400. [2024-11-03 01:19:41,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 285 states have (on average 1.4385964912280702) internal successors, (410), 287 states have internal predecessors, (410), 110 states have call successors, (110), 4 states have call predecessors, (110), 4 states have return successors, (110), 108 states have call predecessors, (110), 110 states have call successors, (110) [2024-11-03 01:19:41,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 630 transitions. [2024-11-03 01:19:41,462 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 630 transitions. Word has length 306 [2024-11-03 01:19:41,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 01:19:41,463 INFO L471 AbstractCegarLoop]: Abstraction has 400 states and 630 transitions. [2024-11-03 01:19:41,464 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 1 states have call successors, (94), 2 states have call predecessors, (94), 2 states have return successors, (94), 1 states have call predecessors, (94), 1 states have call successors, (94) [2024-11-03 01:19:41,464 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 630 transitions. [2024-11-03 01:19:41,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2024-11-03 01:19:41,469 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 01:19:41,469 INFO L215 NwaCegarLoop]: trace histogram [47, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-03 01:19:41,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2024-11-03 01:19:41,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2024-11-03 01:19:41,671 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 01:19:41,671 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 01:19:41,672 INFO L85 PathProgramCache]: Analyzing trace with hash 327254771, now seen corresponding path program 1 times [2024-11-03 01:19:41,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 01:19:41,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1522321245] [2024-11-03 01:19:41,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 01:19:41,672 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 01:19:41,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 01:19:41,674 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2024-11-03 01:19:41,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2024-11-03 01:19:42,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 01:19:42,318 INFO L255 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-03 01:19:42,326 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 01:19:43,159 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-11-03 01:19:43,159 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 01:19:45,073 INFO L134 CoverageAnalysis]: Checked inductivity of 4324 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4324 trivial. 0 not checked. [2024-11-03 01:19:45,074 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 01:19:45,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1522321245] [2024-11-03 01:19:45,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1522321245] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 01:19:45,074 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 01:19:45,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2024-11-03 01:19:45,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653805455] [2024-11-03 01:19:45,074 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 01:19:45,075 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-03 01:19:45,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 01:19:45,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-03 01:19:45,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-03 01:19:45,076 INFO L87 Difference]: Start difference. First operand 400 states and 630 transitions. Second operand has 6 states, 6 states have (on average 14.666666666666666) internal successors, (88), 6 states have internal predecessors, (88), 1 states have call successors, (47), 1 states have call predecessors, (47), 1 states have return successors, (47), 1 states have call predecessors, (47), 1 states have call successors, (47) [2024-11-03 01:19:50,378 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 01:19:54,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 01:19:58,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 01:20:02,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 01:20:06,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 01:20:10,409 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-11-03 01:20:14,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []