/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_floatingpointinfluence_no-floats_file-70.i -------------------------------------------------------------------------------- This is Ultimate 0.2.5-dev-b75d321-m [2024-11-03 00:49:40,882 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-03 00:49:40,949 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 00:49:40,953 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-03 00:49:40,953 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-03 00:49:40,978 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-03 00:49:40,979 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-03 00:49:40,979 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-03 00:49:40,979 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-03 00:49:40,979 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-03 00:49:40,980 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-03 00:49:40,980 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-03 00:49:40,982 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-03 00:49:40,984 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-03 00:49:40,985 INFO L153 SettingsManager]: * Use SBE=true [2024-11-03 00:49:40,985 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-03 00:49:40,985 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-03 00:49:40,985 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-03 00:49:40,985 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-03 00:49:40,985 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-03 00:49:40,986 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-03 00:49:40,986 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-03 00:49:40,986 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-03 00:49:40,986 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-03 00:49:40,987 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2024-11-03 00:49:40,987 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-03 00:49:40,987 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2024-11-03 00:49:40,987 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-03 00:49:40,987 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-03 00:49:40,987 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-03 00:49:40,988 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-03 00:49:40,988 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-03 00:49:40,988 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-03 00:49:40,988 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-03 00:49:40,988 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 00:49:40,988 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-03 00:49:40,989 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-03 00:49:40,989 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-03 00:49:40,989 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2024-11-03 00:49:40,991 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2024-11-03 00:49:40,991 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-03 00:49:40,992 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-03 00:49:40,992 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-03 00:49:40,992 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-03 00:49:40,992 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt [2024-11-03 00:49:41,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-03 00:49:41,182 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-03 00:49:41,184 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-03 00:49:41,184 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-03 00:49:41,184 INFO L274 PluginConnector]: CDTParser initialized [2024-11-03 00:49:41,185 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-70.i [2024-11-03 00:49:42,386 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-03 00:49:42,538 INFO L384 CDTParser]: Found 1 translation units. [2024-11-03 00:49:42,539 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_no-floats_file-70.i [2024-11-03 00:49:42,544 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5c46e797/d27907d96bbf4c4c804eb74b810a597a/FLAG3b6ab4afd [2024-11-03 00:49:42,965 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c5c46e797/d27907d96bbf4c4c804eb74b810a597a [2024-11-03 00:49:42,967 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-03 00:49:42,968 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-11-03 00:49:42,969 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-03 00:49:42,969 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-03 00:49:42,973 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-03 00:49:42,973 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:49:42" (1/1) ... [2024-11-03 00:49:42,974 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79ce176f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:49:42, skipping insertion in model container [2024-11-03 00:49:42,974 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:49:42" (1/1) ... [2024-11-03 00:49:42,993 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-03 00:49:43,109 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_floatingpointinfluence_no-floats_file-70.i[916,929] [2024-11-03 00:49:43,138 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 00:49:43,155 INFO L200 MainTranslator]: Completed pre-run [2024-11-03 00:49:43,168 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_floatingpointinfluence_no-floats_file-70.i[916,929] [2024-11-03 00:49:43,182 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-03 00:49:43,199 INFO L204 MainTranslator]: Completed translation [2024-11-03 00:49:43,199 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:49:43 WrapperNode [2024-11-03 00:49:43,200 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-03 00:49:43,201 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-03 00:49:43,201 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-03 00:49:43,201 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-03 00:49:43,206 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:49:43" (1/1) ... [2024-11-03 00:49:43,213 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:49:43" (1/1) ... [2024-11-03 00:49:43,228 INFO L138 Inliner]: procedures = 27, calls = 29, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 102 [2024-11-03 00:49:43,228 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-03 00:49:43,229 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-03 00:49:43,229 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-03 00:49:43,229 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-03 00:49:43,240 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:49:43" (1/1) ... [2024-11-03 00:49:43,241 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:49:43" (1/1) ... [2024-11-03 00:49:43,243 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:49:43" (1/1) ... [2024-11-03 00:49:43,252 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 00:49:43,252 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:49:43" (1/1) ... [2024-11-03 00:49:43,252 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:49:43" (1/1) ... [2024-11-03 00:49:43,257 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:49:43" (1/1) ... [2024-11-03 00:49:43,259 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:49:43" (1/1) ... [2024-11-03 00:49:43,260 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:49:43" (1/1) ... [2024-11-03 00:49:43,261 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:49:43" (1/1) ... [2024-11-03 00:49:43,263 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-03 00:49:43,264 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-03 00:49:43,264 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-03 00:49:43,264 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-03 00:49:43,265 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:49:43" (1/1) ... [2024-11-03 00:49:43,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-03 00:49:43,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-03 00:49:43,290 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 00:49:43,315 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 00:49:43,339 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-03 00:49:43,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2024-11-03 00:49:43,339 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-03 00:49:43,339 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-03 00:49:43,340 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-03 00:49:43,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-03 00:49:43,410 INFO L238 CfgBuilder]: Building ICFG [2024-11-03 00:49:43,411 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-03 00:49:43,599 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-03 00:49:43,599 INFO L287 CfgBuilder]: Performing block encoding [2024-11-03 00:49:43,612 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-03 00:49:43,612 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-03 00:49:43,614 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:49:43 BoogieIcfgContainer [2024-11-03 00:49:43,614 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-03 00:49:43,616 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-03 00:49:43,616 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-03 00:49:43,619 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-03 00:49:43,619 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 12:49:42" (1/3) ... [2024-11-03 00:49:43,620 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6afdd39e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:49:43, skipping insertion in model container [2024-11-03 00:49:43,620 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:49:43" (2/3) ... [2024-11-03 00:49:43,620 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6afdd39e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:49:43, skipping insertion in model container [2024-11-03 00:49:43,620 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:49:43" (3/3) ... [2024-11-03 00:49:43,621 INFO L112 eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_no-floats_file-70.i [2024-11-03 00:49:43,632 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-03 00:49:43,633 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-03 00:49:43,724 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-03 00:49:43,730 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;@7ad928d7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-03 00:49:43,730 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-03 00:49:43,734 INFO L276 IsEmpty]: Start isEmpty. Operand has 49 states, 30 states have (on average 1.3) internal successors, (39), 31 states have internal predecessors, (39), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-03 00:49:43,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-03 00:49:43,743 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:49:43,744 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:49:43,744 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:49:43,748 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:49:43,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1300849726, now seen corresponding path program 1 times [2024-11-03 00:49:43,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:49:43,754 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1474356480] [2024-11-03 00:49:43,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:49:43,756 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 00:49:43,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 00:49:43,761 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 00:49:43,762 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 00:49:43,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:49:43,880 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-03 00:49:43,885 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:49:43,925 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2024-11-03 00:49:43,926 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:49:44,034 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2024-11-03 00:49:44,035 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:49:44,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1474356480] [2024-11-03 00:49:44,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [1474356480] provided 2 perfect and 0 imperfect interpolant sequences [2024-11-03 00:49:44,036 INFO L185 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2024-11-03 00:49:44,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2024-11-03 00:49:44,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044828114] [2024-11-03 00:49:44,042 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2024-11-03 00:49:44,048 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-03 00:49:44,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:49:44,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-03 00:49:44,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-03 00:49:44,072 INFO L87 Difference]: Start difference. First operand has 49 states, 30 states have (on average 1.3) internal successors, (39), 31 states have internal predecessors, (39), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 1 states have call successors, (16), 1 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-03 00:49:44,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:49:44,093 INFO L93 Difference]: Finished difference Result 91 states and 152 transitions. [2024-11-03 00:49:44,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-03 00:49:44,094 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 1 states have call successors, (16), 1 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 103 [2024-11-03 00:49:44,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:49:44,099 INFO L225 Difference]: With dead ends: 91 [2024-11-03 00:49:44,099 INFO L226 Difference]: Without dead ends: 45 [2024-11-03 00:49:44,102 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 204 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 00:49:44,104 INFO L432 NwaCegarLoop]: 64 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, 64 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 00:49:44,105 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-03 00:49:44,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-03 00:49:44,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-11-03 00:49:44,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 states have internal predecessors, (32), 16 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-03 00:49:44,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 64 transitions. [2024-11-03 00:49:44,133 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 64 transitions. Word has length 103 [2024-11-03 00:49:44,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:49:44,133 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 64 transitions. [2024-11-03 00:49:44,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.0) internal successors, (28), 2 states have internal predecessors, (28), 1 states have call successors, (16), 1 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2024-11-03 00:49:44,133 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 64 transitions. [2024-11-03 00:49:44,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-03 00:49:44,135 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:49:44,139 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:49:44,142 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (2)] Ended with exit code 0 [2024-11-03 00:49:44,340 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 00:49:44,340 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:49:44,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:49:44,341 INFO L85 PathProgramCache]: Analyzing trace with hash -180634686, now seen corresponding path program 1 times [2024-11-03 00:49:44,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:49:44,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2035787569] [2024-11-03 00:49:44,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:49:44,342 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 00:49:44,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 00:49:44,345 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 00:49:44,346 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 00:49:44,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:49:44,505 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-03 00:49:44,514 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:49:44,997 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 138 proven. 72 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2024-11-03 00:49:44,997 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-03 00:49:45,372 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 9 proven. 36 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2024-11-03 00:49:45,372 INFO L136 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2024-11-03 00:49:45,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2035787569] [2024-11-03 00:49:45,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModulePreferences [2035787569] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-03 00:49:45,373 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-03 00:49:45,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14 [2024-11-03 00:49:45,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922095721] [2024-11-03 00:49:45,373 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-03 00:49:45,374 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-03 00:49:45,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2024-11-03 00:49:45,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-03 00:49:45,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2024-11-03 00:49:45,376 INFO L87 Difference]: Start difference. First operand 45 states and 64 transitions. Second operand has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 13 states have internal predecessors, (47), 4 states have call successors, (29), 3 states have call predecessors, (29), 5 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2024-11-03 00:49:45,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-03 00:49:45,801 INFO L93 Difference]: Finished difference Result 119 states and 159 transitions. [2024-11-03 00:49:45,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-03 00:49:45,803 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 13 states have internal predecessors, (47), 4 states have call successors, (29), 3 states have call predecessors, (29), 5 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) Word has length 103 [2024-11-03 00:49:45,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-03 00:49:45,805 INFO L225 Difference]: With dead ends: 119 [2024-11-03 00:49:45,805 INFO L226 Difference]: Without dead ends: 77 [2024-11-03 00:49:45,805 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=139, Invalid=281, Unknown=0, NotChecked=0, Total=420 [2024-11-03 00:49:45,807 INFO L432 NwaCegarLoop]: 42 mSDtfsCounter, 161 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-03 00:49:45,808 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 128 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-03 00:49:45,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2024-11-03 00:49:45,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 70. [2024-11-03 00:49:45,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 47 states have (on average 1.1702127659574468) internal successors, (55), 48 states have internal predecessors, (55), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 17 states have call predecessors, (18), 18 states have call successors, (18) [2024-11-03 00:49:45,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 91 transitions. [2024-11-03 00:49:45,824 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 91 transitions. Word has length 103 [2024-11-03 00:49:45,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-03 00:49:45,825 INFO L471 AbstractCegarLoop]: Abstraction has 70 states and 91 transitions. [2024-11-03 00:49:45,825 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 13 states have internal predecessors, (47), 4 states have call successors, (29), 3 states have call predecessors, (29), 5 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2024-11-03 00:49:45,825 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 91 transitions. [2024-11-03 00:49:45,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-03 00:49:45,827 INFO L207 NwaCegarLoop]: Found error trace [2024-11-03 00:49:45,827 INFO L215 NwaCegarLoop]: trace histogram [16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:49:45,831 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 00:49:46,030 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 00:49:46,032 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-03 00:49:46,032 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-03 00:49:46,032 INFO L85 PathProgramCache]: Analyzing trace with hash 499423684, now seen corresponding path program 1 times [2024-11-03 00:49:46,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2024-11-03 00:49:46,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1419448111] [2024-11-03 00:49:46,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-03 00:49:46,033 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2024-11-03 00:49:46,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2024-11-03 00:49:46,037 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 00:49:46,038 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 00:49:46,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-03 00:49:46,192 INFO L255 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-03 00:49:46,197 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-03 00:51:27,891 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 304 proven. 114 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2024-11-03 00:51:27,891 INFO L311 TraceCheckSpWp]: Computing backward predicates...