/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/gemcutter/NewStatesSleep-VarAbsGlobalSyntactic.epf -tc ../../../trunk/examples/toolchains/AutomizerBpl.xml -i ../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/safe018_rmo.oepc.line955.bpl


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


This is Ultimate 0.2.2-wip.dk.por-optimizations-5c708e3-m
[2022-10-04 10:13:22,656 INFO  L177        SettingsManager]: Resetting all preferences to default values...
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[2022-10-04 10:13:22,760 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/gemcutter/NewStatesSleep-VarAbsGlobalSyntactic.epf
[2022-10-04 10:13:22,798 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-10-04 10:13:22,798 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-10-04 10:13:22,798 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-10-04 10:13:22,799 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-10-04 10:13:22,799 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-10-04 10:13:22,800 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-10-04 10:13:22,800 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-10-04 10:13:22,800 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-10-04 10:13:22,800 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-10-04 10:13:22,800 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-10-04 10:13:22,801 INFO  L138        SettingsManager]:  * sizeof long=4
[2022-10-04 10:13:22,801 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-10-04 10:13:22,802 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2022-10-04 10:13:22,802 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-10-04 10:13:22,802 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-10-04 10:13:22,802 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-10-04 10:13:22,802 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-10-04 10:13:22,802 INFO  L138        SettingsManager]:  * sizeof long double=12
[2022-10-04 10:13:22,802 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-10-04 10:13:22,802 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2022-10-04 10:13:22,802 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-10-04 10:13:22,803 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-10-04 10:13:22,803 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-10-04 10:13:22,803 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2022-10-04 10:13:22,803 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-10-04 10:13:22,803 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-10-04 10:13:22,803 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-10-04 10:13:22,803 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-10-04 10:13:22,804 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-10-04 10:13:22,804 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-10-04 10:13:22,804 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-10-04 10:13:22,804 INFO  L138        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2022-10-04 10:13:22,804 INFO  L138        SettingsManager]:  * Abstraction used for commutativity in POR=VARIABLES_GLOBAL
[2022-10-04 10:13:22,804 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA
[2022-10-04 10:13:22,804 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-10-04 10:13:22,804 INFO  L138        SettingsManager]:  * CEGAR restart behaviour=ONE_CEGAR_PER_ERROR_LOCATION
[2022-10-04 10:13:22,805 INFO  L138        SettingsManager]:  * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES
[2022-10-04 10:13:22,805 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-10-04 10:13:22,805 INFO  L138        SettingsManager]:  * Independence relation used for POR in concurrent analysis=SYNTACTIC
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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2022-10-04 10:13:23,002 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-10-04 10:13:23,019 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-10-04 10:13:23,021 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-10-04 10:13:23,022 INFO  L271        PluginConnector]: Initializing Boogie PL CUP Parser...
[2022-10-04 10:13:23,023 INFO  L275        PluginConnector]: Boogie PL CUP Parser initialized
[2022-10-04 10:13:23,024 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/safe018_rmo.oepc.line955.bpl
[2022-10-04 10:13:23,024 INFO  L110           BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/safe018_rmo.oepc.line955.bpl'
[2022-10-04 10:13:23,069 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-10-04 10:13:23,071 INFO  L131        ToolchainWalker]: Walking toolchain with 3 elements.
[2022-10-04 10:13:23,073 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-10-04 10:13:23,073 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-10-04 10:13:23,073 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-10-04 10:13:23,087 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "safe018_rmo.oepc.line955.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 10:13:23" (1/1) ...
[2022-10-04 10:13:23,088 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "safe018_rmo.oepc.line955.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 10:13:23" (1/1) ...
[2022-10-04 10:13:23,113 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "safe018_rmo.oepc.line955.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 10:13:23" (1/1) ...
[2022-10-04 10:13:23,113 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "safe018_rmo.oepc.line955.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 10:13:23" (1/1) ...
[2022-10-04 10:13:23,134 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "safe018_rmo.oepc.line955.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 10:13:23" (1/1) ...
[2022-10-04 10:13:23,144 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "safe018_rmo.oepc.line955.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 10:13:23" (1/1) ...
[2022-10-04 10:13:23,147 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "safe018_rmo.oepc.line955.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 10:13:23" (1/1) ...
[2022-10-04 10:13:23,158 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-10-04 10:13:23,160 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-10-04 10:13:23,160 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-10-04 10:13:23,160 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-10-04 10:13:23,173 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "safe018_rmo.oepc.line955.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 10:13:23" (1/1) ...
[2022-10-04 10:13:23,179 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-10-04 10:13:23,186 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-10-04 10:13:23,210 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)
[2022-10-04 10:13:23,221 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
[2022-10-04 10:13:23,245 INFO  L130     BoogieDeclarations]: Found specification of procedure P0
[2022-10-04 10:13:23,245 INFO  L138     BoogieDeclarations]: Found implementation of procedure P0
[2022-10-04 10:13:23,245 INFO  L130     BoogieDeclarations]: Found specification of procedure P1
[2022-10-04 10:13:23,246 INFO  L138     BoogieDeclarations]: Found implementation of procedure P1
[2022-10-04 10:13:23,246 INFO  L130     BoogieDeclarations]: Found specification of procedure P2
[2022-10-04 10:13:23,246 INFO  L138     BoogieDeclarations]: Found implementation of procedure P2
[2022-10-04 10:13:23,246 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-10-04 10:13:23,246 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-10-04 10:13:23,248 WARN  L208             CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement
[2022-10-04 10:13:23,448 INFO  L234             CfgBuilder]: Building ICFG
[2022-10-04 10:13:23,459 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-10-04 10:13:24,071 INFO  L275             CfgBuilder]: Performing block encoding
[2022-10-04 10:13:24,094 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-10-04 10:13:24,094 INFO  L299             CfgBuilder]: Removed 0 assume(true) statements.
[2022-10-04 10:13:24,098 INFO  L202        PluginConnector]: Adding new model safe018_rmo.oepc.line955.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 10:13:24 BoogieIcfgContainer
[2022-10-04 10:13:24,098 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-10-04 10:13:24,100 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-10-04 10:13:24,100 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-10-04 10:13:24,104 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-10-04 10:13:24,104 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "safe018_rmo.oepc.line955.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 10:13:23" (1/2) ...
[2022-10-04 10:13:24,107 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ad05ba0 and model type safe018_rmo.oepc.line955.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.10 10:13:24, skipping insertion in model container
[2022-10-04 10:13:24,108 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "safe018_rmo.oepc.line955.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 10:13:24" (2/2) ...
[2022-10-04 10:13:24,109 INFO  L112   eAbstractionObserver]: Analyzing ICFG safe018_rmo.oepc.line955.bpl
[2022-10-04 10:13:24,120 WARN  L145   ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program
[2022-10-04 10:13:24,129 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-10-04 10:13:24,129 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-10-04 10:13:24,129 INFO  L515   ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2022-10-04 10:13:24,250 INFO  L144    ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions.
[2022-10-04 10:13:24,295 INFO  L100   denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2022-10-04 10:13:24,296 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000
[2022-10-04 10:13:24,296 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-10-04 10:13:24,304 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)
[2022-10-04 10:13:24,304 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
[2022-10-04 10:13:24,327 INFO  L158   artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations.
[2022-10-04 10:13:24,332 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ========
[2022-10-04 10:13:24,347 INFO  L357      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, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5afd4669, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2022-10-04 10:13:24,348 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-10-04 10:13:24,549 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] ===
[2022-10-04 10:13:24,553 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-10-04 10:13:24,553 INFO  L85        PathProgramCache]: Analyzing trace with hash 1458187161, now seen corresponding path program 1 times
[2022-10-04 10:13:24,559 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-10-04 10:13:24,560 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229006611]
[2022-10-04 10:13:24,560 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-10-04 10:13:24,561 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-10-04 10:13:24,777 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-10-04 10:13:24,879 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-10-04 10:13:24,879 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-10-04 10:13:24,879 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229006611]
[2022-10-04 10:13:24,880 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229006611] provided 1 perfect and 0 imperfect interpolant sequences
[2022-10-04 10:13:24,880 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-10-04 10:13:24,880 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-10-04 10:13:24,882 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939730802]
[2022-10-04 10:13:24,882 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-10-04 10:13:24,897 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-10-04 10:13:24,898 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-10-04 10:13:24,914 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-10-04 10:13:24,915 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-10-04 10:13:24,917 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 10:13:24,921 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2022-10-04 10:13:24,922 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 105.0) internal successors, (210), 2 states have internal predecessors, (210), 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)
[2022-10-04 10:13:24,923 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 10:13:36,182 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 10:13:36,183 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-10-04 10:13:36,200 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] ===
[2022-10-04 10:13:36,212 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-10-04 10:13:36,212 INFO  L85        PathProgramCache]: Analyzing trace with hash -1694047542, now seen corresponding path program 1 times
[2022-10-04 10:13:36,212 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-10-04 10:13:36,212 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761679181]
[2022-10-04 10:13:36,213 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-10-04 10:13:36,213 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-10-04 10:13:36,313 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-10-04 10:13:36,493 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-10-04 10:13:36,494 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-10-04 10:13:36,494 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761679181]
[2022-10-04 10:13:36,494 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761679181] provided 1 perfect and 0 imperfect interpolant sequences
[2022-10-04 10:13:36,494 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-10-04 10:13:36,494 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-10-04 10:13:36,495 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132466758]
[2022-10-04 10:13:36,495 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-10-04 10:13:36,498 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-10-04 10:13:36,498 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-10-04 10:13:36,499 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-10-04 10:13:36,499 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-10-04 10:13:36,499 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 10:13:36,501 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2022-10-04 10:13:36,502 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 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)
[2022-10-04 10:13:36,502 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 10:13:36,502 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 10:13:42,508 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 10:13:42,509 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 10:13:42,509 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-10-04 10:13:42,509 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] ===
[2022-10-04 10:13:42,510 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-10-04 10:13:42,510 INFO  L85        PathProgramCache]: Analyzing trace with hash -569547074, now seen corresponding path program 1 times
[2022-10-04 10:13:42,510 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-10-04 10:13:42,510 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476044108]
[2022-10-04 10:13:42,510 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-10-04 10:13:42,511 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-10-04 10:13:42,537 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-10-04 10:13:42,622 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-10-04 10:13:42,623 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-10-04 10:13:42,623 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476044108]
[2022-10-04 10:13:42,623 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476044108] provided 1 perfect and 0 imperfect interpolant sequences
[2022-10-04 10:13:42,623 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-10-04 10:13:42,623 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-10-04 10:13:42,623 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016849000]
[2022-10-04 10:13:42,623 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-10-04 10:13:42,624 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-10-04 10:13:42,624 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-10-04 10:13:42,624 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-10-04 10:13:42,624 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-10-04 10:13:42,624 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 10:13:42,625 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2022-10-04 10:13:42,625 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 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)
[2022-10-04 10:13:42,625 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 10:13:42,625 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 10:13:42,626 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 10:13:48,185 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 10:13:48,185 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 10:13:48,185 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 10:13:48,186 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-10-04 10:13:48,186 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] ===
[2022-10-04 10:13:48,186 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-10-04 10:13:48,186 INFO  L85        PathProgramCache]: Analyzing trace with hash -1502873006, now seen corresponding path program 1 times
[2022-10-04 10:13:48,187 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-10-04 10:13:48,187 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114310493]
[2022-10-04 10:13:48,187 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-10-04 10:13:48,187 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-10-04 10:13:48,219 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-10-04 10:13:48,299 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-10-04 10:13:48,300 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-10-04 10:13:48,300 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114310493]
[2022-10-04 10:13:48,300 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114310493] provided 1 perfect and 0 imperfect interpolant sequences
[2022-10-04 10:13:48,300 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-10-04 10:13:48,301 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-10-04 10:13:48,301 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573041610]
[2022-10-04 10:13:48,311 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-10-04 10:13:48,312 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-10-04 10:13:48,312 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-10-04 10:13:48,312 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-10-04 10:13:48,312 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-10-04 10:13:48,312 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 10:13:48,313 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2022-10-04 10:13:48,313 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 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)
[2022-10-04 10:13:48,313 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 10:13:48,313 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 10:13:48,313 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 10:13:48,314 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 10:13:53,727 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 10:13:53,728 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 10:13:53,728 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 10:13:53,728 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 10:13:53,729 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2022-10-04 10:13:53,729 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] ===
[2022-10-04 10:13:53,730 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-10-04 10:13:53,731 INFO  L85        PathProgramCache]: Analyzing trace with hash 899226699, now seen corresponding path program 1 times
[2022-10-04 10:13:53,731 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-10-04 10:13:53,732 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773412432]
[2022-10-04 10:13:53,732 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-10-04 10:13:53,732 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-10-04 10:13:53,775 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-10-04 10:13:53,860 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-10-04 10:13:53,860 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-10-04 10:13:53,860 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773412432]
[2022-10-04 10:13:53,861 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773412432] provided 1 perfect and 0 imperfect interpolant sequences
[2022-10-04 10:13:53,861 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-10-04 10:13:53,861 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-10-04 10:13:53,861 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415086723]
[2022-10-04 10:13:53,861 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-10-04 10:13:53,862 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-10-04 10:13:53,862 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-10-04 10:13:53,863 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-10-04 10:13:53,863 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-10-04 10:13:53,863 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 10:13:53,864 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2022-10-04 10:13:53,864 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 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)
[2022-10-04 10:13:53,864 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 10:13:53,864 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 10:13:53,864 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 10:13:53,864 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 10:13:53,864 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 10:13:58,758 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 10:13:58,759 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 10:13:58,759 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 10:13:58,759 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 10:13:58,759 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 10:13:58,759 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2022-10-04 10:13:58,760 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] ===
[2022-10-04 10:13:58,760 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-10-04 10:13:58,760 INFO  L85        PathProgramCache]: Analyzing trace with hash 1380233950, now seen corresponding path program 1 times
[2022-10-04 10:13:58,760 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-10-04 10:13:58,760 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852647270]
[2022-10-04 10:13:58,760 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-10-04 10:13:58,761 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-10-04 10:13:58,787 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-10-04 10:13:58,837 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-10-04 10:13:58,837 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-10-04 10:13:58,837 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852647270]
[2022-10-04 10:13:58,837 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852647270] provided 1 perfect and 0 imperfect interpolant sequences
[2022-10-04 10:13:58,838 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-10-04 10:13:58,838 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-10-04 10:13:58,838 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307356213]
[2022-10-04 10:13:58,838 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-10-04 10:13:58,839 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-10-04 10:13:58,839 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-10-04 10:13:58,839 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-10-04 10:13:58,840 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-10-04 10:13:58,840 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 10:13:58,840 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2022-10-04 10:13:58,840 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 73.75) internal successors, (295), 4 states have internal predecessors, (295), 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)
[2022-10-04 10:13:58,841 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 10:13:58,841 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 10:13:58,841 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 10:13:58,841 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 10:13:58,841 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 10:13:58,841 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 10:14:04,450 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 10:14:04,450 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 10:14:04,450 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 10:14:04,450 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 10:14:04,450 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 10:14:04,450 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2022-10-04 10:14:04,450 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2022-10-04 10:14:04,451 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] ===
[2022-10-04 10:14:04,451 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-10-04 10:14:04,451 INFO  L85        PathProgramCache]: Analyzing trace with hash 1193620830, now seen corresponding path program 2 times
[2022-10-04 10:14:04,451 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-10-04 10:14:04,451 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305853493]
[2022-10-04 10:14:04,452 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-10-04 10:14:04,452 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-10-04 10:14:04,490 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-10-04 10:14:04,616 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-10-04 10:14:04,616 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-10-04 10:14:04,616 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305853493]
[2022-10-04 10:14:04,616 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305853493] provided 1 perfect and 0 imperfect interpolant sequences
[2022-10-04 10:14:04,619 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-10-04 10:14:04,620 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-10-04 10:14:04,620 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590684930]
[2022-10-04 10:14:04,620 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-10-04 10:14:04,620 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-10-04 10:14:04,620 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-10-04 10:14:04,621 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-10-04 10:14:04,621 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2022-10-04 10:14:04,621 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 10:14:04,621 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2022-10-04 10:14:04,622 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 73.75) internal successors, (295), 4 states have internal predecessors, (295), 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)
[2022-10-04 10:14:04,622 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 10:14:04,622 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 10:14:04,622 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 10:14:04,622 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 10:14:04,622 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 10:14:04,623 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2022-10-04 10:14:04,623 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 10:14:10,807 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 10:14:10,807 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 10:14:10,808 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 10:14:10,808 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 10:14:10,808 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 10:14:10,808 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2022-10-04 10:14:10,808 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-10-04 10:14:10,808 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2022-10-04 10:14:10,809 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] ===
[2022-10-04 10:14:10,809 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-10-04 10:14:10,809 INFO  L85        PathProgramCache]: Analyzing trace with hash 953672661, now seen corresponding path program 1 times
[2022-10-04 10:14:10,809 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-10-04 10:14:10,809 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004698478]
[2022-10-04 10:14:10,810 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-10-04 10:14:10,810 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-10-04 10:14:10,853 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-10-04 10:14:11,065 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-10-04 10:14:11,066 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-10-04 10:14:11,066 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004698478]
[2022-10-04 10:14:11,066 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1004698478] provided 1 perfect and 0 imperfect interpolant sequences
[2022-10-04 10:14:11,066 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-10-04 10:14:11,067 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2022-10-04 10:14:11,070 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624953928]
[2022-10-04 10:14:11,075 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-10-04 10:14:11,076 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2022-10-04 10:14:11,076 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-10-04 10:14:11,077 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2022-10-04 10:14:11,077 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2022-10-04 10:14:11,077 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 10:14:11,078 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2022-10-04 10:14:11,078 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 49.166666666666664) internal successors, (295), 6 states have internal predecessors, (295), 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)
[2022-10-04 10:14:11,078 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 10:14:11,078 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 10:14:11,078 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 10:14:11,078 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 10:14:11,078 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 10:14:11,079 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2022-10-04 10:14:11,079 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. 
[2022-10-04 10:14:11,079 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 10:14:17,031 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 10:14:17,031 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 10:14:17,031 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 10:14:17,031 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 10:14:17,031 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 10:14:17,047 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2022-10-04 10:14:17,048 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-10-04 10:14:17,048 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2022-10-04 10:14:17,048 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2022-10-04 10:14:17,048 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] ===
[2022-10-04 10:14:17,048 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-10-04 10:14:17,049 INFO  L85        PathProgramCache]: Analyzing trace with hash 1351363440, now seen corresponding path program 1 times
[2022-10-04 10:14:17,049 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-10-04 10:14:17,049 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156965635]
[2022-10-04 10:14:17,049 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-10-04 10:14:17,049 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-10-04 10:14:17,096 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-10-04 10:14:17,178 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-10-04 10:14:17,178 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-10-04 10:14:17,178 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156965635]
[2022-10-04 10:14:17,178 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156965635] provided 1 perfect and 0 imperfect interpolant sequences
[2022-10-04 10:14:17,178 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-10-04 10:14:17,178 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2022-10-04 10:14:17,179 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641027800]
[2022-10-04 10:14:17,179 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-10-04 10:14:17,179 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2022-10-04 10:14:17,179 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-10-04 10:14:17,181 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2022-10-04 10:14:17,181 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2022-10-04 10:14:17,181 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 10:14:17,181 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2022-10-04 10:14:17,182 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 49.166666666666664) internal successors, (295), 6 states have internal predecessors, (295), 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)
[2022-10-04 10:14:17,182 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 10:14:17,182 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 10:14:17,182 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 10:14:17,182 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 10:14:17,182 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 10:14:17,182 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2022-10-04 10:14:17,182 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. 
[2022-10-04 10:14:17,182 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. 
[2022-10-04 10:14:17,182 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 10:16:27,296 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 10:16:27,296 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 10:16:27,296 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 10:16:27,296 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 10:16:27,296 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 10:16:27,297 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2022-10-04 10:16:27,297 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-10-04 10:16:27,297 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2022-10-04 10:16:27,297 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2022-10-04 10:16:27,297 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2022-10-04 10:16:27,297 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] ===
[2022-10-04 10:16:27,298 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-10-04 10:16:27,298 INFO  L85        PathProgramCache]: Analyzing trace with hash 973851949, now seen corresponding path program 1 times
[2022-10-04 10:16:27,298 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-10-04 10:16:27,298 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186670692]
[2022-10-04 10:16:27,299 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-10-04 10:16:27,299 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-10-04 10:16:27,338 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-10-04 10:16:27,404 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-10-04 10:16:27,404 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-10-04 10:16:27,404 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186670692]
[2022-10-04 10:16:27,404 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186670692] provided 1 perfect and 0 imperfect interpolant sequences
[2022-10-04 10:16:27,404 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-10-04 10:16:27,404 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-10-04 10:16:27,405 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137887239]
[2022-10-04 10:16:27,405 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-10-04 10:16:27,406 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-10-04 10:16:27,406 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-10-04 10:16:27,407 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-10-04 10:16:27,407 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2022-10-04 10:16:27,407 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 10:16:27,407 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2022-10-04 10:16:27,408 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 81.25) internal successors, (325), 4 states have internal predecessors, (325), 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)
[2022-10-04 10:16:27,408 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 10:16:27,408 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 10:16:27,408 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 10:16:27,408 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 10:16:27,408 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 10:16:27,408 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2022-10-04 10:16:27,408 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. 
[2022-10-04 10:16:27,408 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. 
[2022-10-04 10:16:27,408 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. 
[2022-10-04 10:16:27,408 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 10:18:27,762 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 10:18:27,762 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 10:18:27,762 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 10:18:27,762 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 10:18:27,762 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 10:18:27,762 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2022-10-04 10:18:27,762 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-10-04 10:18:27,762 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2022-10-04 10:18:27,762 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2022-10-04 10:18:27,762 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2022-10-04 10:18:27,763 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2022-10-04 10:18:27,763 INFO  L420      AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] ===
[2022-10-04 10:18:27,763 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-10-04 10:18:27,763 INFO  L85        PathProgramCache]: Analyzing trace with hash 1060947869, now seen corresponding path program 1 times
[2022-10-04 10:18:27,763 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-10-04 10:18:27,763 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371620750]
[2022-10-04 10:18:27,764 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-10-04 10:18:27,764 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-10-04 10:18:27,787 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-10-04 10:18:27,908 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-10-04 10:18:27,909 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-10-04 10:18:27,909 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371620750]
[2022-10-04 10:18:27,910 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371620750] provided 1 perfect and 0 imperfect interpolant sequences
[2022-10-04 10:18:27,910 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-10-04 10:18:27,910 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2022-10-04 10:18:27,910 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946086754]
[2022-10-04 10:18:27,913 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-10-04 10:18:27,914 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2022-10-04 10:18:27,914 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-10-04 10:18:27,915 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2022-10-04 10:18:27,915 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2022-10-04 10:18:27,915 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 10:18:27,916 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2022-10-04 10:18:27,916 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 55.5) internal successors, (333), 6 states have internal predecessors, (333), 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)
[2022-10-04 10:18:27,916 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 10:18:27,916 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 10:18:27,916 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 10:18:27,916 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 10:18:27,916 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 10:18:27,916 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2022-10-04 10:18:27,916 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. 
[2022-10-04 10:18:27,916 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. 
[2022-10-04 10:18:27,916 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. 
[2022-10-04 10:18:27,916 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2022-10-04 10:18:27,916 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.