/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_9.bpl


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


This is Ultimate 0.2.2-wip.dk.mcr-reduction-44898dd
[2022-02-17 02:51:20,971 INFO  L177        SettingsManager]: Resetting all preferences to default values...
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[2022-02-17 02:51:21,112 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
[2022-02-17 02:51:21,148 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-02-17 02:51:21,148 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-02-17 02:51:21,148 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-02-17 02:51:21,148 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-02-17 02:51:21,149 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-02-17 02:51:21,149 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-02-17 02:51:21,150 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-02-17 02:51:21,150 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-02-17 02:51:21,150 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-02-17 02:51:21,150 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-02-17 02:51:21,150 INFO  L138        SettingsManager]:  * sizeof long=4
[2022-02-17 02:51:21,150 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-02-17 02:51:21,151 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2022-02-17 02:51:21,151 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-02-17 02:51:21,151 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-02-17 02:51:21,154 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-02-17 02:51:21,154 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-02-17 02:51:21,154 INFO  L138        SettingsManager]:  * sizeof long double=12
[2022-02-17 02:51:21,154 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-02-17 02:51:21,154 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2022-02-17 02:51:21,154 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-02-17 02:51:21,155 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-02-17 02:51:21,155 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-02-17 02:51:21,155 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2022-02-17 02:51:21,156 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-02-17 02:51:21,156 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-02-17 02:51:21,156 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-02-17 02:51:21,157 INFO  L138        SettingsManager]:  * Construct finite automaton lazily=true
[2022-02-17 02:51:21,157 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-02-17 02:51:21,157 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-02-17 02:51:21,157 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-02-17 02:51:21,158 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-02-17 02:51:21,158 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2022-02-17 02:51:21,158 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA
[2022-02-17 02:51:21,158 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-02-17 02:51:21,158 INFO  L138        SettingsManager]:  * Partial Order Reduction in concurrent analysis=MCR_WITHOUT_DEPRANKS
[2022-02-17 02:51:21,159 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2022-02-17 02:51:21,427 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-02-17 02:51:21,465 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-02-17 02:51:21,467 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-02-17 02:51:21,469 INFO  L271        PluginConnector]: Initializing Boogie PL CUP Parser...
[2022-02-17 02:51:21,470 INFO  L275        PluginConnector]: Boogie PL CUP Parser initialized
[2022-02-17 02:51:21,471 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_9.bpl
[2022-02-17 02:51:21,472 INFO  L110           BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_9.bpl'
[2022-02-17 02:51:21,498 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-02-17 02:51:21,500 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2022-02-17 02:51:21,501 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2022-02-17 02:51:21,501 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2022-02-17 02:51:21,502 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2022-02-17 02:51:21,515 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 02:51:21" (1/1) ...
[2022-02-17 02:51:21,522 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 02:51:21" (1/1) ...
[2022-02-17 02:51:21,528 INFO  L137                Inliner]: procedures = 10, calls = 9, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0
[2022-02-17 02:51:21,529 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2022-02-17 02:51:21,530 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-02-17 02:51:21,531 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-02-17 02:51:21,531 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-02-17 02:51:21,536 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 02:51:21" (1/1) ...
[2022-02-17 02:51:21,536 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 02:51:21" (1/1) ...
[2022-02-17 02:51:21,538 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 02:51:21" (1/1) ...
[2022-02-17 02:51:21,540 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 02:51:21" (1/1) ...
[2022-02-17 02:51:21,543 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 02:51:21" (1/1) ...
[2022-02-17 02:51:21,544 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 02:51:21" (1/1) ...
[2022-02-17 02:51:21,544 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 02:51:21" (1/1) ...
[2022-02-17 02:51:21,545 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-02-17 02:51:21,546 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-02-17 02:51:21,546 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-02-17 02:51:21,546 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-02-17 02:51:21,548 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 02:51:21" (1/1) ...
[2022-02-17 02:51:21,557 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-02-17 02:51:21,568 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-17 02:51:21,585 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)
[2022-02-17 02:51:21,587 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
[2022-02-17 02:51:21,619 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration
[2022-02-17 02:51:21,619 INFO  L130     BoogieDeclarations]: Found specification of procedure set_1
[2022-02-17 02:51:21,619 INFO  L138     BoogieDeclarations]: Found implementation of procedure set_1
[2022-02-17 02:51:21,619 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration
[2022-02-17 02:51:21,620 INFO  L130     BoogieDeclarations]: Found specification of procedure set_2
[2022-02-17 02:51:21,620 INFO  L138     BoogieDeclarations]: Found implementation of procedure set_2
[2022-02-17 02:51:21,620 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration
[2022-02-17 02:51:21,620 INFO  L130     BoogieDeclarations]: Found specification of procedure set_3
[2022-02-17 02:51:21,620 INFO  L138     BoogieDeclarations]: Found implementation of procedure set_3
[2022-02-17 02:51:21,620 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration
[2022-02-17 02:51:21,620 INFO  L130     BoogieDeclarations]: Found specification of procedure set_4
[2022-02-17 02:51:21,620 INFO  L138     BoogieDeclarations]: Found implementation of procedure set_4
[2022-02-17 02:51:21,621 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration
[2022-02-17 02:51:21,621 INFO  L130     BoogieDeclarations]: Found specification of procedure set_0
[2022-02-17 02:51:21,621 INFO  L138     BoogieDeclarations]: Found implementation of procedure set_0
[2022-02-17 02:51:21,622 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration
[2022-02-17 02:51:21,622 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-02-17 02:51:21,622 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-02-17 02:51:21,622 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration
[2022-02-17 02:51:21,622 INFO  L130     BoogieDeclarations]: Found specification of procedure set_5
[2022-02-17 02:51:21,622 INFO  L138     BoogieDeclarations]: Found implementation of procedure set_5
[2022-02-17 02:51:21,622 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration
[2022-02-17 02:51:21,622 INFO  L130     BoogieDeclarations]: Found specification of procedure set_6
[2022-02-17 02:51:21,623 INFO  L138     BoogieDeclarations]: Found implementation of procedure set_6
[2022-02-17 02:51:21,623 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure set_7 given in one single declaration
[2022-02-17 02:51:21,623 INFO  L130     BoogieDeclarations]: Found specification of procedure set_7
[2022-02-17 02:51:21,623 INFO  L138     BoogieDeclarations]: Found implementation of procedure set_7
[2022-02-17 02:51:21,623 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure set_8 given in one single declaration
[2022-02-17 02:51:21,623 INFO  L130     BoogieDeclarations]: Found specification of procedure set_8
[2022-02-17 02:51:21,623 INFO  L138     BoogieDeclarations]: Found implementation of procedure set_8
[2022-02-17 02:51:21,624 WARN  L208             CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement
[2022-02-17 02:51:21,670 INFO  L234             CfgBuilder]: Building ICFG
[2022-02-17 02:51:21,672 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-02-17 02:51:21,763 INFO  L275             CfgBuilder]: Performing block encoding
[2022-02-17 02:51:21,770 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-02-17 02:51:21,770 INFO  L299             CfgBuilder]: Removed 0 assume(true) statements.
[2022-02-17 02:51:21,772 INFO  L202        PluginConnector]: Adding new model example_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 02:51:21 BoogieIcfgContainer
[2022-02-17 02:51:21,772 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-02-17 02:51:21,773 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-02-17 02:51:21,774 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-02-17 02:51:21,776 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-02-17 02:51:21,776 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_9.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.02 02:51:21" (1/2) ...
[2022-02-17 02:51:21,788 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21674ce and model type example_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 02:51:21, skipping insertion in model container
[2022-02-17 02:51:21,789 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_9.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 02:51:21" (2/2) ...
[2022-02-17 02:51:21,791 INFO  L111   eAbstractionObserver]: Analyzing ICFG example_9.bpl
[2022-02-17 02:51:21,795 WARN  L150   ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program
[2022-02-17 02:51:21,795 INFO  L205   ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-02-17 02:51:21,796 INFO  L164   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-02-17 02:51:21,796 INFO  L534   ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2022-02-17 02:51:21,919 INFO  L148    ThreadInstanceAdder]: Constructed 81 joinOtherThreadTransitions.
[2022-02-17 02:51:21,993 INFO  L168          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000
[2022-02-17 02:51:21,993 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-02-17 02:51:21,995 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)
[2022-02-17 02:51:21,997 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
[2022-02-17 02:51:22,039 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2022-02-17 02:51:22,051 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
[2022-02-17 02:51:22,051 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 10 error locations.
[2022-02-17 02:51:22,570 INFO  L104   alCausalityReduction]: MaximalCausalityReduction evaluated 253 transitions and produced 254 states.
[2022-02-17 02:51:22,573 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 6 more)] ===
[2022-02-17 02:51:22,582 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-02-17 02:51:22,583 INFO  L85        PathProgramCache]: Analyzing trace with hash -169570670, now seen corresponding path program 1 times
[2022-02-17 02:51:22,611 INFO  L126   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-17 02:51:22,612 INFO  L338   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814808346]
[2022-02-17 02:51:22,612 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-17 02:51:22,613 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-17 02:51:22,728 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-17 02:51:22,853 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-17 02:51:22,854 INFO  L144   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-17 02:51:22,854 INFO  L338   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814808346]
[2022-02-17 02:51:22,855 INFO  L165   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814808346] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-17 02:51:22,855 INFO  L191   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-17 02:51:22,855 INFO  L204   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-02-17 02:51:22,857 INFO  L118   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716806006]
[2022-02-17 02:51:22,857 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-17 02:51:22,867 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-02-17 02:51:22,867 INFO  L108   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-17 02:51:22,889 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-02-17 02:51:22,892 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-02-17 02:51:22,893 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-02-17 02:51:22,895 INFO  L470      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2022-02-17 02:51:22,899 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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)
[2022-02-17 02:51:22,899 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-02-17 02:51:23,319 INFO  L104   alCausalityReduction]: MaximalCausalityReduction evaluated 253 transitions and produced 254 states.
[2022-02-17 02:51:23,320 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-02-17 02:51:23,320 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-02-17 02:51:23,322 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 6 more)] ===
[2022-02-17 02:51:23,324 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-02-17 02:51:23,324 INFO  L85        PathProgramCache]: Analyzing trace with hash 342258774, now seen corresponding path program 1 times
[2022-02-17 02:51:23,324 INFO  L126   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-17 02:51:23,325 INFO  L338   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228808379]
[2022-02-17 02:51:23,325 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-17 02:51:23,325 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-17 02:51:23,351 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-17 02:51:23,432 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-17 02:51:23,433 INFO  L144   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-17 02:51:23,433 INFO  L338   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228808379]
[2022-02-17 02:51:23,434 INFO  L165   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228808379] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-17 02:51:23,434 INFO  L191   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-17 02:51:23,434 INFO  L204   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-02-17 02:51:23,434 INFO  L118   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587899404]
[2022-02-17 02:51:23,434 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-17 02:51:23,436 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-02-17 02:51:23,436 INFO  L108   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-17 02:51:23,437 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-02-17 02:51:23,437 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-02-17 02:51:23,437 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-02-17 02:51:23,437 INFO  L470      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2022-02-17 02:51:23,437 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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)
[2022-02-17 02:51:23,438 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-02-17 02:51:23,438 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-02-17 02:51:23,842 INFO  L104   alCausalityReduction]: MaximalCausalityReduction evaluated 253 transitions and produced 254 states.
[2022-02-17 02:51:23,842 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-02-17 02:51:23,843 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-02-17 02:51:23,844 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-02-17 02:51:23,845 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 6 more)] ===
[2022-02-17 02:51:23,846 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-02-17 02:51:23,846 INFO  L85        PathProgramCache]: Analyzing trace with hash 969558878, now seen corresponding path program 1 times
[2022-02-17 02:51:23,846 INFO  L126   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-17 02:51:23,847 INFO  L338   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298470825]
[2022-02-17 02:51:23,847 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-17 02:51:23,847 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-17 02:51:23,870 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-17 02:51:23,911 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-17 02:51:23,912 INFO  L144   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-17 02:51:23,913 INFO  L338   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298470825]
[2022-02-17 02:51:23,913 INFO  L165   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298470825] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-17 02:51:23,913 INFO  L191   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-17 02:51:23,913 INFO  L204   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-02-17 02:51:23,914 INFO  L118   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217021877]
[2022-02-17 02:51:23,914 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-17 02:51:23,915 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-02-17 02:51:23,916 INFO  L108   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-17 02:51:23,916 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-02-17 02:51:23,917 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-02-17 02:51:23,917 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-02-17 02:51:23,917 INFO  L470      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2022-02-17 02:51:23,917 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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)
[2022-02-17 02:51:23,918 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-02-17 02:51:23,918 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-02-17 02:51:23,918 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-02-17 02:51:24,202 INFO  L104   alCausalityReduction]: MaximalCausalityReduction evaluated 253 transitions and produced 254 states.
[2022-02-17 02:51:24,202 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-02-17 02:51:24,202 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-02-17 02:51:24,203 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-02-17 02:51:24,203 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-02-17 02:51:24,203 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 6 more)] ===
[2022-02-17 02:51:24,204 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-02-17 02:51:24,204 INFO  L85        PathProgramCache]: Analyzing trace with hash 1793222788, now seen corresponding path program 1 times
[2022-02-17 02:51:24,204 INFO  L126   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-17 02:51:24,204 INFO  L338   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498386358]
[2022-02-17 02:51:24,204 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-17 02:51:24,205 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-17 02:51:24,218 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-17 02:51:24,257 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-17 02:51:24,257 INFO  L144   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-17 02:51:24,258 INFO  L338   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498386358]
[2022-02-17 02:51:24,262 INFO  L165   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498386358] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-17 02:51:24,262 INFO  L191   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-17 02:51:24,262 INFO  L204   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-02-17 02:51:24,262 INFO  L118   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330841070]
[2022-02-17 02:51:24,262 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-17 02:51:24,263 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-02-17 02:51:24,263 INFO  L108   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-17 02:51:24,264 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-02-17 02:51:24,264 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-02-17 02:51:24,264 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-02-17 02:51:24,265 INFO  L470      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2022-02-17 02:51:24,265 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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)
[2022-02-17 02:51:24,265 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-02-17 02:51:24,266 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-02-17 02:51:24,266 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-02-17 02:51:24,266 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-02-17 02:51:24,494 INFO  L104   alCausalityReduction]: MaximalCausalityReduction evaluated 253 transitions and produced 254 states.
[2022-02-17 02:51:24,494 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-02-17 02:51:24,495 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-02-17 02:51:24,495 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-02-17 02:51:24,495 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-02-17 02:51:24,495 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2022-02-17 02:51:24,496 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 6 more)] ===
[2022-02-17 02:51:24,496 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-02-17 02:51:24,496 INFO  L85        PathProgramCache]: Analyzing trace with hash -46428702, now seen corresponding path program 1 times
[2022-02-17 02:51:24,496 INFO  L126   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-17 02:51:24,497 INFO  L338   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299458568]
[2022-02-17 02:51:24,497 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-17 02:51:24,498 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-17 02:51:24,518 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-17 02:51:24,561 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-17 02:51:24,562 INFO  L144   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-17 02:51:24,562 INFO  L338   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299458568]
[2022-02-17 02:51:24,562 INFO  L165   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299458568] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-17 02:51:24,562 INFO  L191   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-17 02:51:24,563 INFO  L204   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-02-17 02:51:24,563 INFO  L118   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324881987]
[2022-02-17 02:51:24,563 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-17 02:51:24,563 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-02-17 02:51:24,563 INFO  L108   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-17 02:51:24,564 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-02-17 02:51:24,565 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-02-17 02:51:24,565 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-02-17 02:51:24,565 INFO  L470      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2022-02-17 02:51:24,565 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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)
[2022-02-17 02:51:24,565 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-02-17 02:51:24,565 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-02-17 02:51:24,565 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-02-17 02:51:24,566 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-02-17 02:51:24,566 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-02-17 02:51:24,782 INFO  L104   alCausalityReduction]: MaximalCausalityReduction evaluated 253 transitions and produced 254 states.
[2022-02-17 02:51:24,782 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-02-17 02:51:24,782 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-02-17 02:51:24,783 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-02-17 02:51:24,783 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-02-17 02:51:24,783 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-02-17 02:51:24,783 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2022-02-17 02:51:24,784 INFO  L402      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 6 more)] ===
[2022-02-17 02:51:24,784 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-02-17 02:51:24,785 INFO  L85        PathProgramCache]: Analyzing trace with hash 698273796, now seen corresponding path program 1 times
[2022-02-17 02:51:24,785 INFO  L126   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-17 02:51:24,785 INFO  L338   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088171753]
[2022-02-17 02:51:24,785 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-17 02:51:24,785 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-17 02:51:24,796 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-17 02:51:24,827 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-17 02:51:24,827 INFO  L144   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-17 02:51:24,828 INFO  L338   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088171753]
[2022-02-17 02:51:24,828 INFO  L165   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088171753] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-17 02:51:24,828 INFO  L191   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-17 02:51:24,828 INFO  L204   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-02-17 02:51:24,828 INFO  L118   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504235959]
[2022-02-17 02:51:24,829 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-17 02:51:24,829 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-02-17 02:51:24,829 INFO  L108   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-17 02:51:24,830 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-02-17 02:51:24,830 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-02-17 02:51:24,830 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-02-17 02:51:24,830 INFO  L470      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2022-02-17 02:51:24,831 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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)
[2022-02-17 02:51:24,831 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-02-17 02:51:24,831 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-02-17 02:51:24,831 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-02-17 02:51:24,831 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-02-17 02:51:24,831 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-02-17 02:51:24,831 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-02-17 02:51:25,009 INFO  L104   alCausalityReduction]: MaximalCausalityReduction evaluated 253 transitions and produced 254 states.
[2022-02-17 02:51:25,009 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-02-17 02:51:25,009 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-02-17 02:51:25,009 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-02-17 02:51:25,009 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-02-17 02:51:25,010 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-02-17 02:51:25,010 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-02-17 02:51:25,010 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2022-02-17 02:51:25,010 INFO  L402      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 6 more)] ===
[2022-02-17 02:51:25,011 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-02-17 02:51:25,011 INFO  L85        PathProgramCache]: Analyzing trace with hash -1110104188, now seen corresponding path program 1 times
[2022-02-17 02:51:25,011 INFO  L126   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-02-17 02:51:25,011 INFO  L338   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332359168]
[2022-02-17 02:51:25,012 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-02-17 02:51:25,012 INFO  L126          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-02-17 02:51:25,022 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-02-17 02:51:25,637 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-02-17 02:51:25,638 INFO  L144   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-02-17 02:51:25,638 INFO  L338   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332359168]
[2022-02-17 02:51:25,638 INFO  L165   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332359168] provided 1 perfect and 0 imperfect interpolant sequences
[2022-02-17 02:51:25,638 INFO  L191   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-02-17 02:51:25,638 INFO  L204   FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10
[2022-02-17 02:51:25,639 INFO  L118   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119053310]
[2022-02-17 02:51:25,639 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-02-17 02:51:25,639 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2022-02-17 02:51:25,639 INFO  L108   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-02-17 02:51:25,640 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2022-02-17 02:51:25,640 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110
[2022-02-17 02:51:25,640 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-02-17 02:51:25,640 INFO  L470      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2022-02-17 02:51:25,641 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 11 states, 10 states have (on average 3.7) internal successors, (37), 11 states have internal predecessors, (37), 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)
[2022-02-17 02:51:25,641 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-02-17 02:51:25,641 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-02-17 02:51:25,641 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-02-17 02:51:25,641 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-02-17 02:51:25,641 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-02-17 02:51:25,641 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-02-17 02:51:25,642 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.