/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_has-floats_file-85.i


--------------------------------------------------------------------------------


This is Ultimate 0.2.5-dev-b75d321-m
[2024-11-03 00:39:19,978 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-03 00:39:20,049 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 00:39:20,054 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-03 00:39:20,054 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-03 00:39:20,082 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-03 00:39:20,082 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-03 00:39:20,083 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-03 00:39:20,083 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-03 00:39:20,084 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-03 00:39:20,085 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-03 00:39:20,085 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-03 00:39:20,086 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-03 00:39:20,086 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-03 00:39:20,086 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-03 00:39:20,087 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-03 00:39:20,087 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-03 00:39:20,087 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-03 00:39:20,088 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-03 00:39:20,088 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-03 00:39:20,088 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-03 00:39:20,090 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-03 00:39:20,090 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-03 00:39:20,090 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-03 00:39:20,090 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-03 00:39:20,091 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-03 00:39:20,091 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-03 00:39:20,091 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-03 00:39:20,091 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-03 00:39:20,092 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-03 00:39:20,092 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-03 00:39:20,092 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-03 00:39:20,092 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-03 00:39:20,093 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-03 00:39:20,093 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-03 00:39:20,093 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-03 00:39:20,093 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-03 00:39:20,094 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-03 00:39:20,094 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-03 00:39:20,094 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-11-03 00:39:20,094 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-03 00:39:20,095 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-03 00:39:20,095 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-03 00:39:20,095 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-03 00:39:20,095 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt
[2024-11-03 00:39:20,344 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-03 00:39:20,375 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-03 00:39:20,377 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-03 00:39:20,378 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-03 00:39:20,378 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-03 00:39:20,379 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-85.i
[2024-11-03 00:39:21,902 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-03 00:39:22,119 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-03 00:39:22,120 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-85.i
[2024-11-03 00:39:22,132 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93376c26c/dd12862eaf2744ae840dfb7ac799c570/FLAGa894cc9c6
[2024-11-03 00:39:22,152 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93376c26c/dd12862eaf2744ae840dfb7ac799c570
[2024-11-03 00:39:22,156 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-03 00:39:22,158 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-03 00:39:22,161 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-03 00:39:22,161 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-03 00:39:22,166 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-03 00:39:22,166 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:39:22" (1/1) ...
[2024-11-03 00:39:22,167 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f330a5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:39:22, skipping insertion in model container
[2024-11-03 00:39:22,168 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:39:22" (1/1) ...
[2024-11-03 00:39:22,198 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-03 00:39:22,389 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_has-floats_file-85.i[917,930]
[2024-11-03 00:39:22,434 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-03 00:39:22,453 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-03 00:39:22,465 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_has-floats_file-85.i[917,930]
[2024-11-03 00:39:22,496 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-03 00:39:22,520 INFO  L204         MainTranslator]: Completed translation
[2024-11-03 00:39:22,521 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:39:22 WrapperNode
[2024-11-03 00:39:22,522 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-03 00:39:22,523 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-03 00:39:22,523 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-03 00:39:22,523 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-03 00:39:22,533 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:39:22" (1/1) ...
[2024-11-03 00:39:22,543 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:39:22" (1/1) ...
[2024-11-03 00:39:22,569 INFO  L138                Inliner]: procedures = 27, calls = 36, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 124
[2024-11-03 00:39:22,570 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-03 00:39:22,573 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-03 00:39:22,574 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-03 00:39:22,574 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-03 00:39:22,585 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:39:22" (1/1) ...
[2024-11-03 00:39:22,586 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:39:22" (1/1) ...
[2024-11-03 00:39:22,589 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:39:22" (1/1) ...
[2024-11-03 00:39:22,608 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 00:39:22,609 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:39:22" (1/1) ...
[2024-11-03 00:39:22,609 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:39:22" (1/1) ...
[2024-11-03 00:39:22,619 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:39:22" (1/1) ...
[2024-11-03 00:39:22,628 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:39:22" (1/1) ...
[2024-11-03 00:39:22,630 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:39:22" (1/1) ...
[2024-11-03 00:39:22,636 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:39:22" (1/1) ...
[2024-11-03 00:39:22,641 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-03 00:39:22,646 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-03 00:39:22,646 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-03 00:39:22,647 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-03 00:39:22,648 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:39:22" (1/1) ...
[2024-11-03 00:39:22,654 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-03 00:39:22,666 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-03 00:39:22,684 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 00:39:22,691 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 00:39:22,717 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-03 00:39:22,717 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-03 00:39:22,717 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-11-03 00:39:22,717 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-11-03 00:39:22,717 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-03 00:39:22,718 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-03 00:39:22,810 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-03 00:39:22,813 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-03 00:39:23,133 INFO  L?                        ?]: Removed 10 outVars from TransFormulas that were not future-live.
[2024-11-03 00:39:23,134 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-03 00:39:23,148 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-03 00:39:23,149 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-03 00:39:23,149 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:39:23 BoogieIcfgContainer
[2024-11-03 00:39:23,149 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-03 00:39:23,156 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-03 00:39:23,156 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-03 00:39:23,160 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-03 00:39:23,160 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 12:39:22" (1/3) ...
[2024-11-03 00:39:23,161 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a40fe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:39:23, skipping insertion in model container
[2024-11-03 00:39:23,161 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:39:22" (2/3) ...
[2024-11-03 00:39:23,161 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a40fe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:39:23, skipping insertion in model container
[2024-11-03 00:39:23,162 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:39:23" (3/3) ...
[2024-11-03 00:39:23,163 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_has-floats_file-85.i
[2024-11-03 00:39:23,176 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-03 00:39:23,176 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-03 00:39:23,239 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-03 00:39:23,245 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;@c679cf8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-03 00:39:23,247 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-03 00:39:23,252 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 59 states, 33 states have (on average 1.303030303030303) internal successors, (43), 34 states have internal predecessors, (43), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23)
[2024-11-03 00:39:23,269 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 140
[2024-11-03 00:39:23,269 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 00:39:23,270 INFO  L215           NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:39:23,271 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 00:39:23,276 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 00:39:23,277 INFO  L85        PathProgramCache]: Analyzing trace with hash 2080080809, now seen corresponding path program 1 times
[2024-11-03 00:39:23,285 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 00:39:23,285 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [57361265]
[2024-11-03 00:39:23,286 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 00:39:23,288 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 00:39:23,288 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 00:39:23,291 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 00:39:23,294 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 00:39:23,527 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 00:39:23,532 INFO  L255         TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-11-03 00:39:23,541 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 00:39:23,594 INFO  L134       CoverageAnalysis]: Checked inductivity of 1012 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked.
[2024-11-03 00:39:23,595 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 00:39:23,780 INFO  L134       CoverageAnalysis]: Checked inductivity of 1012 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked.
[2024-11-03 00:39:23,781 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 00:39:23,781 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [57361265]
[2024-11-03 00:39:23,782 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [57361265] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 00:39:23,785 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 00:39:23,786 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2
[2024-11-03 00:39:23,787 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894293406]
[2024-11-03 00:39:23,792 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 00:39:23,797 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-03 00:39:23,798 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 00:39:23,820 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-03 00:39:23,821 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-03 00:39:23,823 INFO  L87              Difference]: Start difference. First operand  has 59 states, 33 states have (on average 1.303030303030303) internal successors, (43), 34 states have internal predecessors, (43), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) Second operand  has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 1 states have call successors, (23), 1 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23)
[2024-11-03 00:39:23,845 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 00:39:23,846 INFO  L93              Difference]: Finished difference Result 111 states and 195 transitions.
[2024-11-03 00:39:23,847 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-11-03 00:39:23,849 INFO  L78                 Accepts]: Start accepts. Automaton has  has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 1 states have call successors, (23), 1 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) Word has length 139
[2024-11-03 00:39:23,849 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 00:39:23,859 INFO  L225             Difference]: With dead ends: 111
[2024-11-03 00:39:23,859 INFO  L226             Difference]: Without dead ends: 55
[2024-11-03 00:39:23,863 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 276 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 00:39:23,866 INFO  L432           NwaCegarLoop]: 82 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, 82 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 00:39:23,867 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-03 00:39:23,879 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 55 states.
[2024-11-03 00:39:23,906 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55.
[2024-11-03 00:39:23,907 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 55 states, 30 states have (on average 1.2) internal successors, (36), 30 states have internal predecessors, (36), 23 states have call successors, (23), 1 states have call predecessors, (23), 1 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23)
[2024-11-03 00:39:23,908 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 82 transitions.
[2024-11-03 00:39:23,911 INFO  L78                 Accepts]: Start accepts. Automaton has 55 states and 82 transitions. Word has length 139
[2024-11-03 00:39:23,911 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 00:39:23,912 INFO  L471      AbstractCegarLoop]: Abstraction has 55 states and 82 transitions.
[2024-11-03 00:39:23,912 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 1 states have call successors, (23), 1 states have call predecessors, (23), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23)
[2024-11-03 00:39:23,912 INFO  L276                IsEmpty]: Start isEmpty. Operand 55 states and 82 transitions.
[2024-11-03 00:39:23,919 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 140
[2024-11-03 00:39:23,919 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 00:39:23,920 INFO  L215           NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:39:23,926 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 00:39:24,123 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 00:39:24,124 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 00:39:24,124 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 00:39:24,125 INFO  L85        PathProgramCache]: Analyzing trace with hash 765421479, now seen corresponding path program 1 times
[2024-11-03 00:39:24,125 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 00:39:24,125 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [526614843]
[2024-11-03 00:39:24,125 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 00:39:24,125 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 00:39:24,126 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 00:39:24,127 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 00:39:24,128 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 00:39:24,318 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 00:39:24,332 INFO  L255         TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 6 conjuncts are in the unsatisfiable core
[2024-11-03 00:39:24,339 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 00:39:24,719 INFO  L134       CoverageAnalysis]: Checked inductivity of 1012 backedges. 256 proven. 57 refuted. 0 times theorem prover too weak. 699 trivial. 0 not checked.
[2024-11-03 00:39:24,719 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 00:39:24,999 INFO  L134       CoverageAnalysis]: Checked inductivity of 1012 backedges. 9 proven. 57 refuted. 0 times theorem prover too weak. 946 trivial. 0 not checked.
[2024-11-03 00:39:25,000 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 00:39:25,000 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [526614843]
[2024-11-03 00:39:25,000 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [526614843] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-03 00:39:25,000 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-03 00:39:25,000 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8
[2024-11-03 00:39:25,001 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839017744]
[2024-11-03 00:39:25,001 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-03 00:39:25,004 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-11-03 00:39:25,005 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 00:39:25,006 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-11-03 00:39:25,007 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2024-11-03 00:39:25,008 INFO  L87              Difference]: Start difference. First operand 55 states and 82 transitions. Second operand  has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 2 states have call successors, (42), 2 states have call predecessors, (42), 4 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43)
[2024-11-03 00:39:25,710 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 00:39:25,710 INFO  L93              Difference]: Finished difference Result 174 states and 252 transitions.
[2024-11-03 00:39:25,711 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. 
[2024-11-03 00:39:25,712 INFO  L78                 Accepts]: Start accepts. Automaton has  has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 2 states have call successors, (42), 2 states have call predecessors, (42), 4 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43) Word has length 139
[2024-11-03 00:39:25,713 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 00:39:25,718 INFO  L225             Difference]: With dead ends: 174
[2024-11-03 00:39:25,718 INFO  L226             Difference]: Without dead ends: 122
[2024-11-03 00:39:25,721 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 270 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=230, Unknown=0, NotChecked=0, Total=342
[2024-11-03 00:39:25,724 INFO  L432           NwaCegarLoop]: 95 mSDtfsCounter, 95 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2024-11-03 00:39:25,725 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 238 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2024-11-03 00:39:25,726 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 122 states.
[2024-11-03 00:39:25,749 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 60.
[2024-11-03 00:39:25,749 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 60 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 34 states have internal predecessors, (40), 23 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23)
[2024-11-03 00:39:25,751 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 86 transitions.
[2024-11-03 00:39:25,751 INFO  L78                 Accepts]: Start accepts. Automaton has 60 states and 86 transitions. Word has length 139
[2024-11-03 00:39:25,752 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 00:39:25,752 INFO  L471      AbstractCegarLoop]: Abstraction has 60 states and 86 transitions.
[2024-11-03 00:39:25,757 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 2 states have call successors, (42), 2 states have call predecessors, (42), 4 states have return successors, (43), 2 states have call predecessors, (43), 2 states have call successors, (43)
[2024-11-03 00:39:25,757 INFO  L276                IsEmpty]: Start isEmpty. Operand 60 states and 86 transitions.
[2024-11-03 00:39:25,759 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 141
[2024-11-03 00:39:25,759 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 00:39:25,759 INFO  L215           NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:39:25,765 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 00:39:25,960 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 00:39:25,961 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 00:39:25,961 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 00:39:25,962 INFO  L85        PathProgramCache]: Analyzing trace with hash -1988236148, now seen corresponding path program 1 times
[2024-11-03 00:39:25,962 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 00:39:25,962 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [941897148]
[2024-11-03 00:39:25,962 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 00:39:25,962 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 00:39:25,963 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 00:39:25,965 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 00:39:25,966 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 00:39:26,170 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 00:39:26,185 INFO  L255         TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 15 conjuncts are in the unsatisfiable core
[2024-11-03 00:39:26,192 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 00:39:27,103 INFO  L134       CoverageAnalysis]: Checked inductivity of 1012 backedges. 527 proven. 126 refuted. 0 times theorem prover too weak. 359 trivial. 0 not checked.
[2024-11-03 00:39:27,103 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 00:39:27,683 INFO  L134       CoverageAnalysis]: Checked inductivity of 1012 backedges. 54 proven. 135 refuted. 0 times theorem prover too weak. 823 trivial. 0 not checked.
[2024-11-03 00:39:27,684 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 00:39:27,684 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [941897148]
[2024-11-03 00:39:27,684 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [941897148] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-03 00:39:27,684 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-03 00:39:27,684 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 22
[2024-11-03 00:39:27,685 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418417268]
[2024-11-03 00:39:27,685 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-03 00:39:27,685 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 22 states
[2024-11-03 00:39:27,685 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 00:39:27,686 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2024-11-03 00:39:27,687 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=357, Unknown=0, NotChecked=0, Total=462
[2024-11-03 00:39:27,687 INFO  L87              Difference]: Start difference. First operand 60 states and 86 transitions. Second operand  has 22 states, 22 states have (on average 2.727272727272727) internal successors, (60), 22 states have internal predecessors, (60), 4 states have call successors, (40), 4 states have call predecessors, (40), 10 states have return successors, (41), 4 states have call predecessors, (41), 4 states have call successors, (41)
[2024-11-03 00:39:29,469 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 00:39:29,469 INFO  L93              Difference]: Finished difference Result 209 states and 279 transitions.
[2024-11-03 00:39:29,469 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. 
[2024-11-03 00:39:29,470 INFO  L78                 Accepts]: Start accepts. Automaton has  has 22 states, 22 states have (on average 2.727272727272727) internal successors, (60), 22 states have internal predecessors, (60), 4 states have call successors, (40), 4 states have call predecessors, (40), 10 states have return successors, (41), 4 states have call predecessors, (41), 4 states have call successors, (41) Word has length 140
[2024-11-03 00:39:29,471 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 00:39:29,472 INFO  L225             Difference]: With dead ends: 209
[2024-11-03 00:39:29,473 INFO  L226             Difference]: Without dead ends: 152
[2024-11-03 00:39:29,477 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 263 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1126 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1122, Invalid=3168, Unknown=0, NotChecked=0, Total=4290
[2024-11-03 00:39:29,479 INFO  L432           NwaCegarLoop]: 88 mSDtfsCounter, 205 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time
[2024-11-03 00:39:29,480 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [205 Valid, 197 Invalid, 643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time]
[2024-11-03 00:39:29,482 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 152 states.
[2024-11-03 00:39:29,506 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 71.
[2024-11-03 00:39:29,507 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 71 states, 42 states have (on average 1.0714285714285714) internal successors, (45), 42 states have internal predecessors, (45), 23 states have call successors, (23), 5 states have call predecessors, (23), 5 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23)
[2024-11-03 00:39:29,509 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 91 transitions.
[2024-11-03 00:39:29,510 INFO  L78                 Accepts]: Start accepts. Automaton has 71 states and 91 transitions. Word has length 140
[2024-11-03 00:39:29,511 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 00:39:29,511 INFO  L471      AbstractCegarLoop]: Abstraction has 71 states and 91 transitions.
[2024-11-03 00:39:29,512 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 22 states, 22 states have (on average 2.727272727272727) internal successors, (60), 22 states have internal predecessors, (60), 4 states have call successors, (40), 4 states have call predecessors, (40), 10 states have return successors, (41), 4 states have call predecessors, (41), 4 states have call successors, (41)
[2024-11-03 00:39:29,512 INFO  L276                IsEmpty]: Start isEmpty. Operand 71 states and 91 transitions.
[2024-11-03 00:39:29,513 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 141
[2024-11-03 00:39:29,514 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 00:39:29,514 INFO  L215           NwaCegarLoop]: trace histogram [23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:39:29,522 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Ended with exit code 0
[2024-11-03 00:39:29,714 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 00:39:29,715 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 00:39:29,715 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 00:39:29,716 INFO  L85        PathProgramCache]: Analyzing trace with hash -1986389106, now seen corresponding path program 1 times
[2024-11-03 00:39:29,716 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 00:39:29,716 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [145644469]
[2024-11-03 00:39:29,716 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 00:39:29,716 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 00:39:29,717 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 00:39:29,725 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 00:39:29,726 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 00:39:29,906 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 00:39:29,929 INFO  L255         TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 33 conjuncts are in the unsatisfiable core
[2024-11-03 00:39:29,936 INFO  L278         TraceCheckSpWp]: Computing forward predicates...