/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-MCRwithoutDepranks-Lazy.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_5.bpl


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


This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19
[2022-03-16 21:33:08,494 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2022-03-16 21:33:08,495 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2022-03-16 21:33:08,548 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2022-03-16 21:33:08,555 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2022-03-16 21:33:08,556 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2022-03-16 21:33:08,557 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2022-03-16 21:33:08,558 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2022-03-16 21:33:08,570 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2022-03-16 21:33:08,571 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2022-03-16 21:33:08,571 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2022-03-16 21:33:08,575 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2022-03-16 21:33:08,575 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2022-03-16 21:33:08,579 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2022-03-16 21:33:08,580 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2022-03-16 21:33:08,580 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2022-03-16 21:33:08,581 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2022-03-16 21:33:08,581 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-03-16 21:33:08,582 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2022-03-16 21:33:08,583 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2022-03-16 21:33:08,584 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2022-03-16 21:33:08,590 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2022-03-16 21:33:08,590 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-03-16 21:33:08,591 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2022-03-16 21:33:08,593 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2022-03-16 21:33:08,593 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2022-03-16 21:33:08,593 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2022-03-16 21:33:08,593 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2022-03-16 21:33:08,594 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2022-03-16 21:33:08,594 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2022-03-16 21:33:08,594 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2022-03-16 21:33:08,595 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2022-03-16 21:33:08,595 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2022-03-16 21:33:08,596 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2022-03-16 21:33:08,596 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2022-03-16 21:33:08,596 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2022-03-16 21:33:08,597 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2022-03-16 21:33:08,597 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2022-03-16 21:33:08,597 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2022-03-16 21:33:08,598 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2022-03-16 21:33:08,598 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-03-16 21:33:08,605 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-MCRwithoutDepranks-Lazy.epf
[2022-03-16 21:33:08,632 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-03-16 21:33:08,632 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-03-16 21:33:08,632 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-03-16 21:33:08,632 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-03-16 21:33:08,633 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-03-16 21:33:08,633 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-03-16 21:33:08,633 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-03-16 21:33:08,633 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-03-16 21:33:08,633 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-03-16 21:33:08,633 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-03-16 21:33:08,634 INFO  L138        SettingsManager]:  * sizeof long=4
[2022-03-16 21:33:08,634 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-03-16 21:33:08,634 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2022-03-16 21:33:08,634 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-03-16 21:33:08,634 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-03-16 21:33:08,634 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-03-16 21:33:08,634 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-03-16 21:33:08,634 INFO  L138        SettingsManager]:  * sizeof long double=12
[2022-03-16 21:33:08,634 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-03-16 21:33:08,634 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2022-03-16 21:33:08,634 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-03-16 21:33:08,635 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-03-16 21:33:08,635 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-03-16 21:33:08,635 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2022-03-16 21:33:08,635 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-03-16 21:33:08,635 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-03-16 21:33:08,635 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-03-16 21:33:08,635 INFO  L138        SettingsManager]:  * Construct finite automaton lazily=true
[2022-03-16 21:33:08,635 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-03-16 21:33:08,635 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-03-16 21:33:08,635 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-03-16 21:33:08,635 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-03-16 21:33:08,635 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-03-16 21:33:08,636 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA
[2022-03-16 21:33:08,636 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-03-16 21:33:08,636 INFO  L138        SettingsManager]:  * Partial Order Reduction in concurrent analysis=MCR_WITHOUT_DEPRANKS
[2022-03-16 21:33:08,636 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2022-03-16 21:33:08,824 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-03-16 21:33:08,843 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-03-16 21:33:08,845 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-03-16 21:33:08,846 INFO  L271        PluginConnector]: Initializing Boogie PL CUP Parser...
[2022-03-16 21:33:08,847 INFO  L275        PluginConnector]: Boogie PL CUP Parser initialized
[2022-03-16 21:33:08,848 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_5.bpl
[2022-03-16 21:33:08,848 INFO  L110           BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_5.bpl'
[2022-03-16 21:33:08,865 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-03-16 21:33:08,866 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2022-03-16 21:33:08,867 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-03-16 21:33:08,867 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-03-16 21:33:08,867 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-03-16 21:33:08,879 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:33:08" (1/1) ...
[2022-03-16 21:33:08,884 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:33:08" (1/1) ...
[2022-03-16 21:33:08,895 INFO  L137                Inliner]: procedures = 6, calls = 5, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0
[2022-03-16 21:33:08,896 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-03-16 21:33:08,897 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-03-16 21:33:08,898 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-03-16 21:33:08,898 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-03-16 21:33:08,903 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:33:08" (1/1) ...
[2022-03-16 21:33:08,903 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:33:08" (1/1) ...
[2022-03-16 21:33:08,904 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:33:08" (1/1) ...
[2022-03-16 21:33:08,904 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:33:08" (1/1) ...
[2022-03-16 21:33:08,905 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:33:08" (1/1) ...
[2022-03-16 21:33:08,906 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:33:08" (1/1) ...
[2022-03-16 21:33:08,906 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:33:08" (1/1) ...
[2022-03-16 21:33:08,907 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-03-16 21:33:08,907 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-03-16 21:33:08,907 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-03-16 21:33:08,908 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-03-16 21:33:08,908 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:33:08" (1/1) ...
[2022-03-16 21:33:08,922 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-03-16 21:33:08,927 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-03-16 21:33:08,938 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-03-16 21:33:08,952 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-03-16 21:33:09,007 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration
[2022-03-16 21:33:09,007 INFO  L130     BoogieDeclarations]: Found specification of procedure set_1
[2022-03-16 21:33:09,007 INFO  L138     BoogieDeclarations]: Found implementation of procedure set_1
[2022-03-16 21:33:09,008 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration
[2022-03-16 21:33:09,008 INFO  L130     BoogieDeclarations]: Found specification of procedure set_2
[2022-03-16 21:33:09,008 INFO  L138     BoogieDeclarations]: Found implementation of procedure set_2
[2022-03-16 21:33:09,008 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration
[2022-03-16 21:33:09,008 INFO  L130     BoogieDeclarations]: Found specification of procedure set_3
[2022-03-16 21:33:09,008 INFO  L138     BoogieDeclarations]: Found implementation of procedure set_3
[2022-03-16 21:33:09,008 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration
[2022-03-16 21:33:09,008 INFO  L130     BoogieDeclarations]: Found specification of procedure set_4
[2022-03-16 21:33:09,008 INFO  L138     BoogieDeclarations]: Found implementation of procedure set_4
[2022-03-16 21:33:09,008 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration
[2022-03-16 21:33:09,008 INFO  L130     BoogieDeclarations]: Found specification of procedure set_0
[2022-03-16 21:33:09,008 INFO  L138     BoogieDeclarations]: Found implementation of procedure set_0
[2022-03-16 21:33:09,009 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration
[2022-03-16 21:33:09,009 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-03-16 21:33:09,009 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-03-16 21:33:09,009 WARN  L208             CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement
[2022-03-16 21:33:09,051 INFO  L234             CfgBuilder]: Building ICFG
[2022-03-16 21:33:09,053 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-03-16 21:33:09,177 INFO  L275             CfgBuilder]: Performing block encoding
[2022-03-16 21:33:09,186 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-03-16 21:33:09,187 INFO  L299             CfgBuilder]: Removed 0 assume(true) statements.
[2022-03-16 21:33:09,189 INFO  L202        PluginConnector]: Adding new model example_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.03 09:33:09 BoogieIcfgContainer
[2022-03-16 21:33:09,189 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-03-16 21:33:09,192 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-03-16 21:33:09,192 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-03-16 21:33:09,195 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-03-16 21:33:09,195 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_5.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.03 09:33:08" (1/2) ...
[2022-03-16 21:33:09,197 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38ddb54d and model type example_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.03 09:33:09, skipping insertion in model container
[2022-03-16 21:33:09,197 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_5.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.03 09:33:09" (2/2) ...
[2022-03-16 21:33:09,198 INFO  L111   eAbstractionObserver]: Analyzing ICFG example_5.bpl
[2022-03-16 21:33:09,206 WARN  L150   ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program
[2022-03-16 21:33:09,206 INFO  L205   ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-03-16 21:33:09,206 INFO  L164   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-03-16 21:33:09,206 INFO  L534   ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2022-03-16 21:33:09,253 INFO  L148    ThreadInstanceAdder]: Constructed 25 joinOtherThreadTransitions.
[2022-03-16 21:33:09,311 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000
[2022-03-16 21:33:09,311 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-03-16 21:33:09,329 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null)
[2022-03-16 21:33:09,338 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process
[2022-03-16 21:33:09,358 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-03-16 21:33:09,365 INFO  L339      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, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mLazyFiniteAutomaton=true, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true
[2022-03-16 21:33:09,366 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 6 error locations.
[2022-03-16 21:33:09,465 INFO  L104   alCausalityReduction]: MaximalCausalityReduction evaluated 81 transitions and produced 82 states.
[2022-03-16 21:33:09,466 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] ===
[2022-03-16 21:33:09,470 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-03-16 21:33:09,470 INFO  L85        PathProgramCache]: Analyzing trace with hash -759969617, now seen corresponding path program 1 times
[2022-03-16 21:33:09,476 INFO  L126   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-03-16 21:33:09,476 INFO  L338   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083078504]
[2022-03-16 21:33:09,477 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-16 21:33:09,477 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-03-16 21:33:09,530 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-03-16 21:33:09,576 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-03-16 21:33:09,577 INFO  L144   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-03-16 21:33:09,577 INFO  L338   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083078504]
[2022-03-16 21:33:09,577 INFO  L165   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083078504] provided 1 perfect and 0 imperfect interpolant sequences
[2022-03-16 21:33:09,577 INFO  L191   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-03-16 21:33:09,577 INFO  L204   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-03-16 21:33:09,578 INFO  L118   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294424243]
[2022-03-16 21:33:09,579 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-03-16 21:33:09,585 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-03-16 21:33:09,586 INFO  L108   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-03-16 21:33:09,598 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-03-16 21:33:09,599 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-03-16 21:33:09,600 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-03-16 21:33:09,601 INFO  L470      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2022-03-16 21:33:09,601 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-03-16 21:33:09,602 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-03-16 21:33:09,693 INFO  L104   alCausalityReduction]: MaximalCausalityReduction evaluated 81 transitions and produced 82 states.
[2022-03-16 21:33:09,697 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-03-16 21:33:09,697 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-03-16 21:33:09,697 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] ===
[2022-03-16 21:33:09,698 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-03-16 21:33:09,698 INFO  L85        PathProgramCache]: Analyzing trace with hash -759018227, now seen corresponding path program 1 times
[2022-03-16 21:33:09,698 INFO  L126   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-03-16 21:33:09,698 INFO  L338   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599223552]
[2022-03-16 21:33:09,698 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-16 21:33:09,699 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-03-16 21:33:09,705 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-03-16 21:33:09,722 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-03-16 21:33:09,722 INFO  L144   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-03-16 21:33:09,722 INFO  L338   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599223552]
[2022-03-16 21:33:09,722 INFO  L165   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599223552] provided 1 perfect and 0 imperfect interpolant sequences
[2022-03-16 21:33:09,722 INFO  L191   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-03-16 21:33:09,722 INFO  L204   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-03-16 21:33:09,723 INFO  L118   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353231776]
[2022-03-16 21:33:09,723 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-03-16 21:33:09,724 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-03-16 21:33:09,724 INFO  L108   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-03-16 21:33:09,724 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-03-16 21:33:09,725 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-03-16 21:33:09,725 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-03-16 21:33:09,725 INFO  L470      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2022-03-16 21:33:09,725 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-03-16 21:33:09,725 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-03-16 21:33:09,725 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-03-16 21:33:09,775 INFO  L104   alCausalityReduction]: MaximalCausalityReduction evaluated 81 transitions and produced 82 states.
[2022-03-16 21:33:09,776 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-03-16 21:33:09,776 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-03-16 21:33:09,776 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-03-16 21:33:09,777 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] ===
[2022-03-16 21:33:09,777 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-03-16 21:33:09,777 INFO  L85        PathProgramCache]: Analyzing trace with hash -758124497, now seen corresponding path program 1 times
[2022-03-16 21:33:09,777 INFO  L126   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-03-16 21:33:09,777 INFO  L338   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010090544]
[2022-03-16 21:33:09,778 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-16 21:33:09,778 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-03-16 21:33:09,784 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-03-16 21:33:09,798 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-03-16 21:33:09,799 INFO  L144   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-03-16 21:33:09,799 INFO  L338   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010090544]
[2022-03-16 21:33:09,799 INFO  L165   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010090544] provided 1 perfect and 0 imperfect interpolant sequences
[2022-03-16 21:33:09,799 INFO  L191   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-03-16 21:33:09,799 INFO  L204   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-03-16 21:33:09,799 INFO  L118   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564741595]
[2022-03-16 21:33:09,799 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-03-16 21:33:09,800 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-03-16 21:33:09,800 INFO  L108   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-03-16 21:33:09,800 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-03-16 21:33:09,800 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-03-16 21:33:09,800 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-03-16 21:33:09,800 INFO  L470      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2022-03-16 21:33:09,801 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-03-16 21:33:09,801 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-03-16 21:33:09,801 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-03-16 21:33:09,801 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-03-16 21:33:09,851 INFO  L104   alCausalityReduction]: MaximalCausalityReduction evaluated 81 transitions and produced 82 states.
[2022-03-16 21:33:09,852 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-03-16 21:33:09,852 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-03-16 21:33:09,852 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-03-16 21:33:09,852 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-03-16 21:33:09,853 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] ===
[2022-03-16 21:33:09,853 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-03-16 21:33:09,853 INFO  L85        PathProgramCache]: Analyzing trace with hash -757201007, now seen corresponding path program 1 times
[2022-03-16 21:33:09,854 INFO  L126   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-03-16 21:33:09,854 INFO  L338   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788984434]
[2022-03-16 21:33:09,854 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-16 21:33:09,854 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-03-16 21:33:09,866 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-03-16 21:33:10,098 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-03-16 21:33:10,099 INFO  L144   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-03-16 21:33:10,099 INFO  L338   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788984434]
[2022-03-16 21:33:10,099 INFO  L165   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788984434] provided 1 perfect and 0 imperfect interpolant sequences
[2022-03-16 21:33:10,099 INFO  L191   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-03-16 21:33:10,099 INFO  L204   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2022-03-16 21:33:10,100 INFO  L118   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570861993]
[2022-03-16 21:33:10,100 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-03-16 21:33:10,100 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2022-03-16 21:33:10,100 INFO  L108   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-03-16 21:33:10,101 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2022-03-16 21:33:10,101 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2022-03-16 21:33:10,101 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-03-16 21:33:10,101 INFO  L470      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2022-03-16 21:33:10,101 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-03-16 21:33:10,101 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-03-16 21:33:10,101 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-03-16 21:33:10,101 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-03-16 21:33:10,101 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-03-16 21:33:10,408 INFO  L104   alCausalityReduction]: MaximalCausalityReduction evaluated 438 transitions and produced 439 states.
[2022-03-16 21:33:10,409 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-03-16 21:33:10,409 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-03-16 21:33:10,409 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-03-16 21:33:10,409 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2022-03-16 21:33:10,409 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2022-03-16 21:33:10,410 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] ===
[2022-03-16 21:33:10,412 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-03-16 21:33:10,412 INFO  L85        PathProgramCache]: Analyzing trace with hash -1085583889, now seen corresponding path program 2 times
[2022-03-16 21:33:10,412 INFO  L126   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-03-16 21:33:10,413 INFO  L338   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881253559]
[2022-03-16 21:33:10,413 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-16 21:33:10,413 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-03-16 21:33:10,432 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-03-16 21:33:10,605 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-03-16 21:33:10,606 INFO  L144   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-03-16 21:33:10,606 INFO  L338   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881253559]
[2022-03-16 21:33:10,606 INFO  L165   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881253559] provided 1 perfect and 0 imperfect interpolant sequences
[2022-03-16 21:33:10,606 INFO  L191   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-03-16 21:33:10,606 INFO  L204   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2022-03-16 21:33:10,606 INFO  L118   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909541514]
[2022-03-16 21:33:10,606 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-03-16 21:33:10,607 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2022-03-16 21:33:10,607 INFO  L108   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-03-16 21:33:10,607 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2022-03-16 21:33:10,607 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2022-03-16 21:33:10,607 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-03-16 21:33:10,607 INFO  L470      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2022-03-16 21:33:10,608 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-03-16 21:33:10,608 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-03-16 21:33:10,608 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-03-16 21:33:10,608 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-03-16 21:33:10,608 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. 
[2022-03-16 21:33:10,608 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-03-16 21:33:12,469 INFO  L104   alCausalityReduction]: MaximalCausalityReduction evaluated 8487 transitions and produced 8488 states.
[2022-03-16 21:33:12,469 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-03-16 21:33:12,469 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-03-16 21:33:12,469 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-03-16 21:33:12,469 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2022-03-16 21:33:12,470 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2022-03-16 21:33:12,470 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2022-03-16 21:33:12,470 INFO  L402      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] ===
[2022-03-16 21:33:12,470 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-03-16 21:33:12,470 INFO  L85        PathProgramCache]: Analyzing trace with hash 1494429295, now seen corresponding path program 3 times
[2022-03-16 21:33:12,471 INFO  L126   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-03-16 21:33:12,471 INFO  L338   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318531213]
[2022-03-16 21:33:12,471 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-16 21:33:12,471 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-03-16 21:33:12,475 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-03-16 21:33:12,619 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-03-16 21:33:12,619 INFO  L144   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-03-16 21:33:12,619 INFO  L338   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318531213]
[2022-03-16 21:33:12,619 INFO  L165   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318531213] provided 1 perfect and 0 imperfect interpolant sequences
[2022-03-16 21:33:12,620 INFO  L191   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-03-16 21:33:12,620 INFO  L204   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2022-03-16 21:33:12,620 INFO  L118   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552668775]
[2022-03-16 21:33:12,620 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-03-16 21:33:12,620 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2022-03-16 21:33:12,620 INFO  L108   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-03-16 21:33:12,621 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2022-03-16 21:33:12,621 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2022-03-16 21:33:12,621 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-03-16 21:33:12,621 INFO  L470      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2022-03-16 21:33:12,621 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-03-16 21:33:12,622 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-03-16 21:33:12,622 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-03-16 21:33:12,622 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-03-16 21:33:12,622 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. 
[2022-03-16 21:33:12,622 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. 
[2022-03-16 21:33:12,622 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-03-16 21:33:15,053 INFO  L104   alCausalityReduction]: MaximalCausalityReduction evaluated 11007 transitions and produced 11008 states.
[2022-03-16 21:33:15,053 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-03-16 21:33:15,053 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-03-16 21:33:15,053 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-03-16 21:33:15,053 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2022-03-16 21:33:15,053 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2022-03-16 21:33:15,054 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2022-03-16 21:33:15,054 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2022-03-16 21:33:15,054 INFO  L402      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] ===
[2022-03-16 21:33:15,054 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-03-16 21:33:15,054 INFO  L85        PathProgramCache]: Analyzing trace with hash 2934383, now seen corresponding path program 4 times
[2022-03-16 21:33:15,055 INFO  L126   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-03-16 21:33:15,055 INFO  L338   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134712355]
[2022-03-16 21:33:15,055 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-16 21:33:15,055 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-03-16 21:33:15,059 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-03-16 21:33:15,167 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-03-16 21:33:15,168 INFO  L144   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-03-16 21:33:15,168 INFO  L338   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134712355]
[2022-03-16 21:33:15,168 INFO  L165   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134712355] provided 1 perfect and 0 imperfect interpolant sequences
[2022-03-16 21:33:15,168 INFO  L191   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-03-16 21:33:15,168 INFO  L204   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2022-03-16 21:33:15,168 INFO  L118   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523352120]
[2022-03-16 21:33:15,168 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-03-16 21:33:15,169 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2022-03-16 21:33:15,169 INFO  L108   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-03-16 21:33:15,169 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2022-03-16 21:33:15,169 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2022-03-16 21:33:15,169 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-03-16 21:33:15,169 INFO  L470      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2022-03-16 21:33:15,169 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-03-16 21:33:15,169 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-03-16 21:33:15,170 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-03-16 21:33:15,170 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-03-16 21:33:15,170 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. 
[2022-03-16 21:33:15,170 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. 
[2022-03-16 21:33:15,170 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. 
[2022-03-16 21:33:15,170 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-03-16 21:33:18,522 INFO  L104   alCausalityReduction]: MaximalCausalityReduction evaluated 16545 transitions and produced 16546 states.
[2022-03-16 21:33:18,522 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-03-16 21:33:18,523 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-03-16 21:33:18,523 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-03-16 21:33:18,523 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2022-03-16 21:33:18,523 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2022-03-16 21:33:18,523 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2022-03-16 21:33:18,523 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2022-03-16 21:33:18,523 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2022-03-16 21:33:18,524 INFO  L402      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] ===
[2022-03-16 21:33:18,524 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-03-16 21:33:18,524 INFO  L85        PathProgramCache]: Analyzing trace with hash 1817238861, now seen corresponding path program 5 times
[2022-03-16 21:33:18,524 INFO  L126   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-03-16 21:33:18,524 INFO  L338   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272340065]
[2022-03-16 21:33:18,525 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-16 21:33:18,525 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-03-16 21:33:18,528 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-03-16 21:33:18,634 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-03-16 21:33:18,634 INFO  L144   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-03-16 21:33:18,634 INFO  L338   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272340065]
[2022-03-16 21:33:18,634 INFO  L165   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272340065] provided 1 perfect and 0 imperfect interpolant sequences
[2022-03-16 21:33:18,634 INFO  L191   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-03-16 21:33:18,635 INFO  L204   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2022-03-16 21:33:18,635 INFO  L118   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016702541]
[2022-03-16 21:33:18,635 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-03-16 21:33:18,635 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2022-03-16 21:33:18,635 INFO  L108   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-03-16 21:33:18,635 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2022-03-16 21:33:18,636 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2022-03-16 21:33:18,636 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-03-16 21:33:18,636 INFO  L470      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2022-03-16 21:33:18,636 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-03-16 21:33:18,636 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-03-16 21:33:18,636 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-03-16 21:33:18,636 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-03-16 21:33:18,636 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. 
[2022-03-16 21:33:18,636 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. 
[2022-03-16 21:33:18,636 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. 
[2022-03-16 21:33:18,636 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. 
[2022-03-16 21:33:18,636 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-03-16 21:33:22,576 INFO  L104   alCausalityReduction]: MaximalCausalityReduction evaluated 20301 transitions and produced 20302 states.
[2022-03-16 21:33:22,576 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-03-16 21:33:22,577 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-03-16 21:33:22,577 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-03-16 21:33:22,577 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2022-03-16 21:33:22,577 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2022-03-16 21:33:22,577 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2022-03-16 21:33:22,577 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2022-03-16 21:33:22,577 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2022-03-16 21:33:22,577 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2022-03-16 21:33:22,578 INFO  L402      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 2 more)] ===
[2022-03-16 21:33:22,578 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-03-16 21:33:22,578 INFO  L85        PathProgramCache]: Analyzing trace with hash 227304111, now seen corresponding path program 6 times
[2022-03-16 21:33:22,578 INFO  L126   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-03-16 21:33:22,578 INFO  L338   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513339512]
[2022-03-16 21:33:22,578 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-03-16 21:33:22,579 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-03-16 21:33:22,593 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-03-16 21:33:22,730 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-03-16 21:33:22,730 INFO  L144   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-03-16 21:33:22,730 INFO  L338   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513339512]
[2022-03-16 21:33:22,730 INFO  L165   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513339512] provided 1 perfect and 0 imperfect interpolant sequences
[2022-03-16 21:33:22,730 INFO  L191   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-03-16 21:33:22,730 INFO  L204   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2022-03-16 21:33:22,731 INFO  L118   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882092529]
[2022-03-16 21:33:22,731 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-03-16 21:33:22,731 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2022-03-16 21:33:22,731 INFO  L108   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-03-16 21:33:22,732 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2022-03-16 21:33:22,732 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42
[2022-03-16 21:33:22,732 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-03-16 21:33:22,732 INFO  L470      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2022-03-16 21:33:22,732 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 6 states have (on average 3.5) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2022-03-16 21:33:22,732 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-03-16 21:33:22,732 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-03-16 21:33:22,732 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-03-16 21:33:22,732 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. 
[2022-03-16 21:33:22,733 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. 
[2022-03-16 21:33:22,733 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. 
[2022-03-16 21:33:22,733 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. 
[2022-03-16 21:33:22,733 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. 
[2022-03-16 21:33:22,733 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.