/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-92.i


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


This is Ultimate 0.2.5-dev-b75d321-m
[2024-11-03 00:40:15,231 INFO  L188        SettingsManager]: Resetting all preferences to default values...
[2024-11-03 00:40:15,322 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 00:40:15,330 WARN  L101        SettingsManager]: Preference file contains the following unknown settings:
[2024-11-03 00:40:15,331 WARN  L103        SettingsManager]:   * de.uni_freiburg.informatik.ultimate.core.Log level for class
[2024-11-03 00:40:15,360 INFO  L130        SettingsManager]: Preferences different from defaults after loading the file:
[2024-11-03 00:40:15,361 INFO  L151        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2024-11-03 00:40:15,361 INFO  L153        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2024-11-03 00:40:15,362 INFO  L151        SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2024-11-03 00:40:15,366 INFO  L153        SettingsManager]:  * Use memory slicer=true
[2024-11-03 00:40:15,366 INFO  L151        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2024-11-03 00:40:15,366 INFO  L153        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2024-11-03 00:40:15,367 INFO  L151        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2024-11-03 00:40:15,367 INFO  L153        SettingsManager]:  * Create parallel compositions if possible=false
[2024-11-03 00:40:15,368 INFO  L153        SettingsManager]:  * Use SBE=true
[2024-11-03 00:40:15,368 INFO  L151        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2024-11-03 00:40:15,368 INFO  L153        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2024-11-03 00:40:15,369 INFO  L153        SettingsManager]:  * sizeof long=4
[2024-11-03 00:40:15,369 INFO  L153        SettingsManager]:  * sizeof POINTER=4
[2024-11-03 00:40:15,371 INFO  L153        SettingsManager]:  * Check division by zero=IGNORE
[2024-11-03 00:40:15,371 INFO  L153        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2024-11-03 00:40:15,373 INFO  L153        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2024-11-03 00:40:15,373 INFO  L153        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2024-11-03 00:40:15,373 INFO  L153        SettingsManager]:  * Adapt memory model on pointer casts if necessary=true
[2024-11-03 00:40:15,373 INFO  L153        SettingsManager]:  * Use bitvectors instead of ints=true
[2024-11-03 00:40:15,374 INFO  L153        SettingsManager]:  * Allow undefined functions=false
[2024-11-03 00:40:15,374 INFO  L153        SettingsManager]:  * Memory model=HoenickeLindenmann_4ByteResolution
[2024-11-03 00:40:15,374 INFO  L153        SettingsManager]:  * sizeof long double=12
[2024-11-03 00:40:15,374 INFO  L153        SettingsManager]:  * Check if freed pointer was valid=false
[2024-11-03 00:40:15,375 INFO  L153        SettingsManager]:  * Use constant arrays=true
[2024-11-03 00:40:15,376 INFO  L151        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2024-11-03 00:40:15,376 INFO  L153        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2024-11-03 00:40:15,376 INFO  L153        SettingsManager]:  * Only consider context switches at boundaries of atomic blocks=true
[2024-11-03 00:40:15,376 INFO  L153        SettingsManager]:  * SMT solver=External_DefaultMode
[2024-11-03 00:40:15,377 INFO  L153        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-03 00:40:15,377 INFO  L151        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2024-11-03 00:40:15,377 INFO  L153        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2024-11-03 00:40:15,377 INFO  L153        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopHeads
[2024-11-03 00:40:15,378 INFO  L153        SettingsManager]:  * Trace refinement strategy=WOLF
[2024-11-03 00:40:15,378 INFO  L153        SettingsManager]:  * Command for external solver=cvc4 --incremental --print-success --lang smt
[2024-11-03 00:40:15,378 INFO  L153        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2024-11-03 00:40:15,378 INFO  L153        SettingsManager]:  * Automaton type used in concurrency analysis=PETRI_NET
[2024-11-03 00:40:15,379 INFO  L153        SettingsManager]:  * Order on configurations for Petri net unfoldings=DBO
[2024-11-03 00:40:15,379 INFO  L153        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2024-11-03 00:40:15,379 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Allow undefined functions -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Command for external solver -> cvc4 --incremental --print-success --lang smt
[2024-11-03 00:40:15,623 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2024-11-03 00:40:15,648 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2024-11-03 00:40:15,652 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2024-11-03 00:40:15,653 INFO  L270        PluginConnector]: Initializing CDTParser...
[2024-11-03 00:40:15,654 INFO  L274        PluginConnector]: CDTParser initialized
[2024-11-03 00:40:15,656 INFO  L431   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-92.i
[2024-11-03 00:40:17,062 INFO  L533              CDTParser]: Created temporary CDT project at NULL
[2024-11-03 00:40:17,262 INFO  L384              CDTParser]: Found 1 translation units.
[2024-11-03 00:40:17,263 INFO  L180              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/hardness-nfm22/hardness_floatingpointinfluence_has-floats_file-92.i
[2024-11-03 00:40:17,271 INFO  L427              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a45e3ab72/1c8c5ffd8ef74af0823cbb85524002ec/FLAGb58eaaac0
[2024-11-03 00:40:17,284 INFO  L435              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a45e3ab72/1c8c5ffd8ef74af0823cbb85524002ec
[2024-11-03 00:40:17,287 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2024-11-03 00:40:17,288 INFO  L133        ToolchainWalker]: Walking toolchain with 5 elements.
[2024-11-03 00:40:17,289 INFO  L112        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2024-11-03 00:40:17,289 INFO  L270        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2024-11-03 00:40:17,295 INFO  L274        PluginConnector]: CACSL2BoogieTranslator initialized
[2024-11-03 00:40:17,296 INFO  L184        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:40:17" (1/1) ...
[2024-11-03 00:40:17,297 INFO  L204        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b7b30c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:40:17, skipping insertion in model container
[2024-11-03 00:40:17,297 INFO  L184        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 12:40:17" (1/1) ...
[2024-11-03 00:40:17,321 INFO  L175         MainTranslator]: Built tables and reachable declarations
[2024-11-03 00:40:17,471 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-92.i[917,930]
[2024-11-03 00:40:17,507 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-03 00:40:17,519 INFO  L200         MainTranslator]: Completed pre-run
[2024-11-03 00:40:17,529 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-92.i[917,930]
[2024-11-03 00:40:17,546 INFO  L210          PostProcessor]: Analyzing one entry point: main
[2024-11-03 00:40:17,565 INFO  L204         MainTranslator]: Completed translation
[2024-11-03 00:40:17,568 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:40:17 WrapperNode
[2024-11-03 00:40:17,568 INFO  L131        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2024-11-03 00:40:17,569 INFO  L112        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2024-11-03 00:40:17,569 INFO  L270        PluginConnector]: Initializing Boogie Procedure Inliner...
[2024-11-03 00:40:17,569 INFO  L274        PluginConnector]: Boogie Procedure Inliner initialized
[2024-11-03 00:40:17,576 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:40:17" (1/1) ...
[2024-11-03 00:40:17,585 INFO  L184        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:40:17" (1/1) ...
[2024-11-03 00:40:17,606 INFO  L138                Inliner]: procedures = 27, calls = 32, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 112
[2024-11-03 00:40:17,607 INFO  L131        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2024-11-03 00:40:17,611 INFO  L112        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2024-11-03 00:40:17,611 INFO  L270        PluginConnector]: Initializing Boogie Preprocessor...
[2024-11-03 00:40:17,612 INFO  L274        PluginConnector]: Boogie Preprocessor initialized
[2024-11-03 00:40:17,621 INFO  L184        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:40:17" (1/1) ...
[2024-11-03 00:40:17,622 INFO  L184        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:40:17" (1/1) ...
[2024-11-03 00:40:17,628 INFO  L184        PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:40:17" (1/1) ...
[2024-11-03 00:40:17,638 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 00:40:17,639 INFO  L184        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:40:17" (1/1) ...
[2024-11-03 00:40:17,639 INFO  L184        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:40:17" (1/1) ...
[2024-11-03 00:40:17,646 INFO  L184        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:40:17" (1/1) ...
[2024-11-03 00:40:17,649 INFO  L184        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:40:17" (1/1) ...
[2024-11-03 00:40:17,653 INFO  L184        PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:40:17" (1/1) ...
[2024-11-03 00:40:17,654 INFO  L184        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:40:17" (1/1) ...
[2024-11-03 00:40:17,663 INFO  L131        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2024-11-03 00:40:17,664 INFO  L112        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2024-11-03 00:40:17,664 INFO  L270        PluginConnector]: Initializing RCFGBuilder...
[2024-11-03 00:40:17,664 INFO  L274        PluginConnector]: RCFGBuilder initialized
[2024-11-03 00:40:17,665 INFO  L184        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:40:17" (1/1) ...
[2024-11-03 00:40:17,671 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000
[2024-11-03 00:40:17,681 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2024-11-03 00:40:17,699 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 00:40:17,702 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 00:40:17,730 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2024-11-03 00:40:17,730 INFO  L130     BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0
[2024-11-03 00:40:17,730 INFO  L130     BoogieDeclarations]: Found specification of procedure assume_abort_if_not
[2024-11-03 00:40:17,731 INFO  L138     BoogieDeclarations]: Found implementation of procedure assume_abort_if_not
[2024-11-03 00:40:17,731 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2024-11-03 00:40:17,731 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2024-11-03 00:40:17,829 INFO  L238             CfgBuilder]: Building ICFG
[2024-11-03 00:40:17,831 INFO  L264             CfgBuilder]: Building CFG for each procedure with an implementation
[2024-11-03 00:40:18,526 INFO  L?                        ?]: Removed 12 outVars from TransFormulas that were not future-live.
[2024-11-03 00:40:18,526 INFO  L287             CfgBuilder]: Performing block encoding
[2024-11-03 00:40:18,546 INFO  L311             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2024-11-03 00:40:18,547 INFO  L316             CfgBuilder]: Removed 1 assume(true) statements.
[2024-11-03 00:40:18,547 INFO  L201        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:40:18 BoogieIcfgContainer
[2024-11-03 00:40:18,547 INFO  L131        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2024-11-03 00:40:18,550 INFO  L112        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2024-11-03 00:40:18,550 INFO  L270        PluginConnector]: Initializing TraceAbstraction...
[2024-11-03 00:40:18,555 INFO  L274        PluginConnector]: TraceAbstraction initialized
[2024-11-03 00:40:18,555 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 12:40:17" (1/3) ...
[2024-11-03 00:40:18,556 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41b91622 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:40:18, skipping insertion in model container
[2024-11-03 00:40:18,556 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 12:40:17" (2/3) ...
[2024-11-03 00:40:18,556 INFO  L204        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41b91622 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 12:40:18, skipping insertion in model container
[2024-11-03 00:40:18,557 INFO  L184        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 12:40:18" (3/3) ...
[2024-11-03 00:40:18,559 INFO  L112   eAbstractionObserver]: Analyzing ICFG hardness_floatingpointinfluence_has-floats_file-92.i
[2024-11-03 00:40:18,577 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2024-11-03 00:40:18,578 INFO  L154   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2024-11-03 00:40:18,655 INFO  L332      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2024-11-03 00:40:18,664 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;@12d7b613, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2024-11-03 00:40:18,665 INFO  L334      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2024-11-03 00:40:18,670 INFO  L276                IsEmpty]: Start isEmpty. Operand  has 53 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 32 states have internal predecessors, (39), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19)
[2024-11-03 00:40:18,684 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 120
[2024-11-03 00:40:18,684 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 00:40:18,685 INFO  L215           NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:40:18,685 INFO  L396      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 00:40:18,690 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 00:40:18,691 INFO  L85        PathProgramCache]: Analyzing trace with hash -769796365, now seen corresponding path program 1 times
[2024-11-03 00:40:18,700 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 00:40:18,701 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [384143534]
[2024-11-03 00:40:18,701 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 00:40:18,703 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 00:40:18,704 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 00:40:18,707 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 00:40:18,709 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 00:40:19,024 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 00:40:19,034 INFO  L255         TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 1 conjuncts are in the unsatisfiable core
[2024-11-03 00:40:19,044 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 00:40:19,108 INFO  L134       CoverageAnalysis]: Checked inductivity of 684 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked.
[2024-11-03 00:40:19,108 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 00:40:19,256 INFO  L134       CoverageAnalysis]: Checked inductivity of 684 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked.
[2024-11-03 00:40:19,257 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 00:40:19,259 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [384143534]
[2024-11-03 00:40:19,259 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [384143534] provided 2 perfect and 0 imperfect interpolant sequences
[2024-11-03 00:40:19,259 INFO  L185   FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences.
[2024-11-03 00:40:19,260 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2
[2024-11-03 00:40:19,261 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836660941]
[2024-11-03 00:40:19,262 INFO  L85    oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton
[2024-11-03 00:40:19,267 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2024-11-03 00:40:19,268 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 00:40:19,292 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2024-11-03 00:40:19,292 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2024-11-03 00:40:19,294 INFO  L87              Difference]: Start difference. First operand  has 53 states, 31 states have (on average 1.2580645161290323) internal successors, (39), 32 states have internal predecessors, (39), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) 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, (19), 1 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19)
[2024-11-03 00:40:19,328 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 00:40:19,328 INFO  L93              Difference]: Finished difference Result 99 states and 167 transitions.
[2024-11-03 00:40:19,330 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2024-11-03 00:40:19,332 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, (19), 1 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 119
[2024-11-03 00:40:19,332 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 00:40:19,340 INFO  L225             Difference]: With dead ends: 99
[2024-11-03 00:40:19,340 INFO  L226             Difference]: Without dead ends: 49
[2024-11-03 00:40:19,343 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 236 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 00:40:19,346 INFO  L432           NwaCegarLoop]: 70 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, 70 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 00:40:19,348 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time]
[2024-11-03 00:40:19,365 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 49 states.
[2024-11-03 00:40:19,393 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49.
[2024-11-03 00:40:19,395 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 49 states, 28 states have (on average 1.1428571428571428) internal successors, (32), 28 states have internal predecessors, (32), 19 states have call successors, (19), 1 states have call predecessors, (19), 1 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19)
[2024-11-03 00:40:19,399 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 70 transitions.
[2024-11-03 00:40:19,401 INFO  L78                 Accepts]: Start accepts. Automaton has 49 states and 70 transitions. Word has length 119
[2024-11-03 00:40:19,401 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 00:40:19,401 INFO  L471      AbstractCegarLoop]: Abstraction has 49 states and 70 transitions.
[2024-11-03 00:40:19,402 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, (19), 1 states have call predecessors, (19), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19)
[2024-11-03 00:40:19,402 INFO  L276                IsEmpty]: Start isEmpty. Operand 49 states and 70 transitions.
[2024-11-03 00:40:19,404 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 120
[2024-11-03 00:40:19,404 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 00:40:19,405 INFO  L215           NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:40:19,409 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 00:40:19,605 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 00:40:19,606 INFO  L396      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 00:40:19,607 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 00:40:19,607 INFO  L85        PathProgramCache]: Analyzing trace with hash 1489589241, now seen corresponding path program 1 times
[2024-11-03 00:40:19,608 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 00:40:19,608 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912330518]
[2024-11-03 00:40:19,608 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 00:40:19,608 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 00:40:19,609 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 00:40:19,610 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 00:40:19,611 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 00:40:20,163 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 00:40:20,177 INFO  L255         TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 9 conjuncts are in the unsatisfiable core
[2024-11-03 00:40:20,185 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 00:40:21,075 INFO  L134       CoverageAnalysis]: Checked inductivity of 684 backedges. 456 proven. 39 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked.
[2024-11-03 00:40:21,075 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 00:40:23,255 INFO  L134       CoverageAnalysis]: Checked inductivity of 684 backedges. 24 proven. 30 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked.
[2024-11-03 00:40:23,256 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 00:40:23,256 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912330518]
[2024-11-03 00:40:23,257 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [912330518] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-03 00:40:23,257 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-03 00:40:23,257 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 14
[2024-11-03 00:40:23,260 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681693604]
[2024-11-03 00:40:23,261 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-03 00:40:23,263 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 14 states
[2024-11-03 00:40:23,263 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 00:40:23,264 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2024-11-03 00:40:23,266 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182
[2024-11-03 00:40:23,267 INFO  L87              Difference]: Start difference. First operand 49 states and 70 transitions. Second operand  has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 5 states have call successors, (29), 3 states have call predecessors, (29), 6 states have return successors, (30), 5 states have call predecessors, (30), 5 states have call successors, (30)
[2024-11-03 00:40:24,783 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 00:40:24,784 INFO  L93              Difference]: Finished difference Result 107 states and 147 transitions.
[2024-11-03 00:40:24,795 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2024-11-03 00:40:24,795 INFO  L78                 Accepts]: Start accepts. Automaton has  has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 5 states have call successors, (29), 3 states have call predecessors, (29), 6 states have return successors, (30), 5 states have call predecessors, (30), 5 states have call successors, (30) Word has length 119
[2024-11-03 00:40:24,796 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 00:40:24,798 INFO  L225             Difference]: With dead ends: 107
[2024-11-03 00:40:24,798 INFO  L226             Difference]: Without dead ends: 61
[2024-11-03 00:40:24,799 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 223 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342
[2024-11-03 00:40:24,800 INFO  L432           NwaCegarLoop]: 44 mSDtfsCounter, 85 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time
[2024-11-03 00:40:24,801 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 182 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time]
[2024-11-03 00:40:24,802 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 61 states.
[2024-11-03 00:40:24,814 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 57.
[2024-11-03 00:40:24,815 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 57 states, 34 states have (on average 1.088235294117647) internal successors, (37), 34 states have internal predecessors, (37), 19 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19)
[2024-11-03 00:40:24,817 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 75 transitions.
[2024-11-03 00:40:24,817 INFO  L78                 Accepts]: Start accepts. Automaton has 57 states and 75 transitions. Word has length 119
[2024-11-03 00:40:24,818 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 00:40:24,818 INFO  L471      AbstractCegarLoop]: Abstraction has 57 states and 75 transitions.
[2024-11-03 00:40:24,818 INFO  L472      AbstractCegarLoop]: INTERPOLANT automaton has  has 14 states, 14 states have (on average 3.642857142857143) internal successors, (51), 14 states have internal predecessors, (51), 5 states have call successors, (29), 3 states have call predecessors, (29), 6 states have return successors, (30), 5 states have call predecessors, (30), 5 states have call successors, (30)
[2024-11-03 00:40:24,818 INFO  L276                IsEmpty]: Start isEmpty. Operand 57 states and 75 transitions.
[2024-11-03 00:40:24,837 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 120
[2024-11-03 00:40:24,837 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 00:40:24,837 INFO  L215           NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:40:24,849 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 00:40:25,038 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 00:40:25,039 INFO  L396      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 00:40:25,040 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 00:40:25,040 INFO  L85        PathProgramCache]: Analyzing trace with hash -1030370693, now seen corresponding path program 1 times
[2024-11-03 00:40:25,040 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 00:40:25,040 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1663380079]
[2024-11-03 00:40:25,040 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 00:40:25,041 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 00:40:25,041 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 00:40:25,044 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 00:40:25,046 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 00:40:25,540 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 00:40:25,551 INFO  L255         TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 7 conjuncts are in the unsatisfiable core
[2024-11-03 00:40:25,555 INFO  L278         TraceCheckSpWp]: Computing forward predicates...
[2024-11-03 00:40:25,670 INFO  L134       CoverageAnalysis]: Checked inductivity of 684 backedges. 178 proven. 6 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked.
[2024-11-03 00:40:25,670 INFO  L311         TraceCheckSpWp]: Computing backward predicates...
[2024-11-03 00:40:25,856 INFO  L134       CoverageAnalysis]: Checked inductivity of 684 backedges. 48 proven. 6 refuted. 0 times theorem prover too weak. 630 trivial. 0 not checked.
[2024-11-03 00:40:25,856 INFO  L136   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace
[2024-11-03 00:40:25,856 INFO  L334   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1663380079]
[2024-11-03 00:40:25,857 INFO  L158   FreeRefinementEngine]: IpTcStrategyModulePreferences [1663380079] provided 0 perfect and 2 imperfect interpolant sequences
[2024-11-03 00:40:25,857 INFO  L185   FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2024-11-03 00:40:25,857 INFO  L198   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8
[2024-11-03 00:40:25,857 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377672108]
[2024-11-03 00:40:25,857 INFO  L85    oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2024-11-03 00:40:25,858 INFO  L548      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2024-11-03 00:40:25,858 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2024-11-03 00:40:25,859 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2024-11-03 00:40:25,859 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2024-11-03 00:40:25,860 INFO  L87              Difference]: Start difference. First operand 57 states and 75 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, (21), 2 states have call predecessors, (21), 4 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22)
[2024-11-03 00:40:26,500 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2024-11-03 00:40:26,501 INFO  L93              Difference]: Finished difference Result 121 states and 156 transitions.
[2024-11-03 00:40:26,513 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2024-11-03 00:40:26,513 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, (21), 2 states have call predecessors, (21), 4 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 119
[2024-11-03 00:40:26,514 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2024-11-03 00:40:26,515 INFO  L225             Difference]: With dead ends: 121
[2024-11-03 00:40:26,515 INFO  L226             Difference]: Without dead ends: 67
[2024-11-03 00:40:26,516 INFO  L431           NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 230 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210
[2024-11-03 00:40:26,517 INFO  L432           NwaCegarLoop]: 45 mSDtfsCounter, 79 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time
[2024-11-03 00:40:26,518 INFO  L433           NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 93 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time]
[2024-11-03 00:40:26,519 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 67 states.
[2024-11-03 00:40:26,532 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 61.
[2024-11-03 00:40:26,532 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand  has 61 states, 37 states have (on average 1.054054054054054) internal successors, (39), 37 states have internal predecessors, (39), 19 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19)
[2024-11-03 00:40:26,533 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 77 transitions.
[2024-11-03 00:40:26,534 INFO  L78                 Accepts]: Start accepts. Automaton has 61 states and 77 transitions. Word has length 119
[2024-11-03 00:40:26,534 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2024-11-03 00:40:26,534 INFO  L471      AbstractCegarLoop]: Abstraction has 61 states and 77 transitions.
[2024-11-03 00:40:26,535 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, (21), 2 states have call predecessors, (21), 4 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22)
[2024-11-03 00:40:26,535 INFO  L276                IsEmpty]: Start isEmpty. Operand 61 states and 77 transitions.
[2024-11-03 00:40:26,536 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 120
[2024-11-03 00:40:26,537 INFO  L207           NwaCegarLoop]: Found error trace
[2024-11-03 00:40:26,537 INFO  L215           NwaCegarLoop]: trace histogram [19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:40:26,546 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 00:40:26,737 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 00:40:26,738 INFO  L396      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] ===
[2024-11-03 00:40:26,739 INFO  L157       PredicateUnifier]: Initialized classic predicate unifier
[2024-11-03 00:40:26,739 INFO  L85        PathProgramCache]: Analyzing trace with hash -1032217735, now seen corresponding path program 1 times
[2024-11-03 00:40:26,740 INFO  L118   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2024-11-03 00:40:26,740 INFO  L334   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913477316]
[2024-11-03 00:40:26,740 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2024-11-03 00:40:26,740 INFO  L173          SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt
[2024-11-03 00:40:26,740 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4
[2024-11-03 00:40:26,743 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 00:40:26,745 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 00:40:27,635 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2024-11-03 00:40:27,646 INFO  L255         TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 49 conjuncts are in the unsatisfiable core
[2024-11-03 00:40:27,655 INFO  L278         TraceCheckSpWp]: Computing forward predicates...