/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-POR-NewStatesSleepPersistentFixedOrder-Uncond-NoLbe-Random7777.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-serverassert08.bpl


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


This is Ultimate 0.2.1-2ce48c3f3f8970e6bfb7f04ced506932607c57fe-2ce48c3
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[2021-10-22 22:59:00,300 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-POR-NewStatesSleepPersistentFixedOrder-Uncond-NoLbe-Random7777.epf
[2021-10-22 22:59:00,327 INFO  L113        SettingsManager]: Loading preferences was successful
[2021-10-22 22:59:00,327 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2021-10-22 22:59:00,328 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-10-22 22:59:00,328 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-10-22 22:59:00,328 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-10-22 22:59:00,329 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2021-10-22 22:59:00,329 INFO  L138        SettingsManager]:  * Use SBE=true
[2021-10-22 22:59:00,329 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-10-22 22:59:00,329 INFO  L138        SettingsManager]:  * sizeof long=4
[2021-10-22 22:59:00,329 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2021-10-22 22:59:00,329 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2021-10-22 22:59:00,329 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2021-10-22 22:59:00,330 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2021-10-22 22:59:00,330 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-10-22 22:59:00,330 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2021-10-22 22:59:00,330 INFO  L138        SettingsManager]:  * sizeof long double=12
[2021-10-22 22:59:00,330 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2021-10-22 22:59:00,330 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2021-10-22 22:59:00,330 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2021-10-22 22:59:00,330 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-10-22 22:59:00,330 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2021-10-22 22:59:00,331 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2021-10-22 22:59:00,331 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2021-10-22 22:59:00,331 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-10-22 22:59:00,335 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-10-22 22:59:00,335 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2021-10-22 22:59:00,335 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-10-22 22:59:00,335 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2021-10-22 22:59:00,336 INFO  L138        SettingsManager]:  * DFS Order used in POR=RANDOM
[2021-10-22 22:59:00,336 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-10-22 22:59:00,336 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2021-10-22 22:59:00,336 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA
[2021-10-22 22:59:00,336 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-10-22 22:59:00,336 INFO  L138        SettingsManager]:  * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE
[2021-10-22 22:59:00,336 INFO  L138        SettingsManager]:  * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER
[2021-10-22 22:59:00,336 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2021-10-22 22:59:00,337 INFO  L138        SettingsManager]:  * Random seed used by POR DFS order=7777
[2021-10-22 22:59:00,337 INFO  L138        SettingsManager]:  * Use conditional POR in concurrent analysis=false
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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2021-10-22 22:59:00,485 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2021-10-22 22:59:00,503 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-10-22 22:59:00,505 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-10-22 22:59:00,505 INFO  L271        PluginConnector]: Initializing Boogie PL CUP Parser...
[2021-10-22 22:59:00,506 INFO  L275        PluginConnector]: Boogie PL CUP Parser initialized
[2021-10-22 22:59:00,507 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-serverassert08.bpl
[2021-10-22 22:59:00,507 INFO  L110           BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-serverassert08.bpl'
[2021-10-22 22:59:00,522 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-10-22 22:59:00,523 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2021-10-22 22:59:00,523 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-10-22 22:59:00,523 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-10-22 22:59:00,523 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2021-10-22 22:59:00,532 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth-serverassert08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.10 10:59:00" (1/1) ...
[2021-10-22 22:59:00,540 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth-serverassert08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.10 10:59:00" (1/1) ...
[2021-10-22 22:59:00,550 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-10-22 22:59:00,551 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-10-22 22:59:00,551 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2021-10-22 22:59:00,551 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2021-10-22 22:59:00,556 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth-serverassert08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.10 10:59:00" (1/1) ...
[2021-10-22 22:59:00,556 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth-serverassert08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.10 10:59:00" (1/1) ...
[2021-10-22 22:59:00,556 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth-serverassert08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.10 10:59:00" (1/1) ...
[2021-10-22 22:59:00,556 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth-serverassert08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.10 10:59:00" (1/1) ...
[2021-10-22 22:59:00,559 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth-serverassert08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.10 10:59:00" (1/1) ...
[2021-10-22 22:59:00,561 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth-serverassert08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.10 10:59:00" (1/1) ...
[2021-10-22 22:59:00,561 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth-serverassert08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.10 10:59:00" (1/1) ...
[2021-10-22 22:59:00,562 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-10-22 22:59:00,562 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-10-22 22:59:00,562 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2021-10-22 22:59:00,562 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2021-10-22 22:59:00,568 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth-serverassert08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.10 10:59:00" (1/1) ...
[2021-10-22 22:59:00,579 INFO  L170          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-10-22 22:59:00,584 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2021-10-22 22:59:00,596 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)
[2021-10-22 22:59:00,601 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
[2021-10-22 22:59:00,624 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration
[2021-10-22 22:59:00,624 INFO  L130     BoogieDeclarations]: Found specification of procedure DeviceThread
[2021-10-22 22:59:00,624 INFO  L138     BoogieDeclarations]: Found implementation of procedure DeviceThread
[2021-10-22 22:59:00,624 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration
[2021-10-22 22:59:00,624 INFO  L130     BoogieDeclarations]: Found specification of procedure ServerThread
[2021-10-22 22:59:00,625 INFO  L138     BoogieDeclarations]: Found implementation of procedure ServerThread
[2021-10-22 22:59:00,625 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration
[2021-10-22 22:59:00,625 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-10-22 22:59:00,625 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-10-22 22:59:00,625 WARN  L209             CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement
[2021-10-22 22:59:00,798 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-10-22 22:59:00,804 INFO  L299             CfgBuilder]: Removed 7 assume(true) statements.
[2021-10-22 22:59:00,813 WARN  L329             CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadEXIT is neither atomic block end nor error location.
[2021-10-22 22:59:00,815 INFO  L202        PluginConnector]: Adding new model bluetooth-serverassert08.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 10:59:00 BoogieIcfgContainer
[2021-10-22 22:59:00,815 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-10-22 22:59:00,817 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-10-22 22:59:00,817 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2021-10-22 22:59:00,832 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2021-10-22 22:59:00,833 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-serverassert08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 22.10 10:59:00" (1/2) ...
[2021-10-22 22:59:00,833 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37f20163 and model type bluetooth-serverassert08.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 10:59:00, skipping insertion in model container
[2021-10-22 22:59:00,834 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-serverassert08.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 10:59:00" (2/2) ...
[2021-10-22 22:59:00,835 INFO  L111   eAbstractionObserver]: Analyzing ICFG bluetooth-serverassert08.bpl
[2021-10-22 22:59:00,841 WARN  L149   ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program
[2021-10-22 22:59:00,841 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-10-22 22:59:00,841 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-10-22 22:59:00,841 INFO  L516   ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2021-10-22 22:59:00,878 INFO  L148    ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions.
[2021-10-22 22:59:00,909 INFO  L170          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000
[2021-10-22 22:59:00,909 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2021-10-22 22:59:00,910 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)
[2021-10-22 22:59:00,911 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
[2021-10-22 22:59:00,930 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ServerThreadThread1of1ForFork0 ========
[2021-10-22 22:59:00,934 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, mConcurrency=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, mLoopAccelerationTechnique=FAST_UPR
[2021-10-22 22:59:00,934 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2021-10-22 22:59:01,343 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ServerThreadErr0ASSERT_VIOLATIONASSERT === [ServerThreadErr0ASSERT_VIOLATIONASSERT] ===
[2021-10-22 22:59:01,346 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-10-22 22:59:01,347 INFO  L82        PathProgramCache]: Analyzing trace with hash -308018735, now seen corresponding path program 1 times
[2021-10-22 22:59:01,352 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-22 22:59:01,352 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950735784]
[2021-10-22 22:59:01,353 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-22 22:59:01,353 INFO  L128          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-22 22:59:01,440 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-22 22:59:01,522 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked.
[2021-10-22 22:59:01,523 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-22 22:59:01,523 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950735784]
[2021-10-22 22:59:01,524 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950735784] provided 1 perfect and 0 imperfect interpolant sequences
[2021-10-22 22:59:01,524 INFO  L186   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-10-22 22:59:01,524 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-10-22 22:59:01,526 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127205509]
[2021-10-22 22:59:01,531 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2021-10-22 22:59:01,532 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-22 22:59:01,544 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-10-22 22:59:01,545 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-10-22 22:59:01,545 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-10-22 22:59:01,546 INFO  L470      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-10-22 22:59:01,547 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 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)
[2021-10-22 22:59:01,547 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-10-22 22:59:01,588 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-10-22 22:59:01,588 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-10-22 22:59:01,588 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ServerThreadErr0ASSERT_VIOLATIONASSERT === [ServerThreadErr0ASSERT_VIOLATIONASSERT] ===
[2021-10-22 22:59:01,591 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-10-22 22:59:01,592 INFO  L82        PathProgramCache]: Analyzing trace with hash -63773985, now seen corresponding path program 2 times
[2021-10-22 22:59:01,592 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-22 22:59:01,592 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767074157]
[2021-10-22 22:59:01,592 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-22 22:59:01,593 INFO  L128          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-22 22:59:01,631 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-22 22:59:01,897 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 11 proven. 19 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked.
[2021-10-22 22:59:01,897 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-22 22:59:01,897 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767074157]
[2021-10-22 22:59:01,897 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767074157] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-22 22:59:01,898 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349723368]
[2021-10-22 22:59:01,898 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2021-10-22 22:59:01,898 INFO  L170          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-22 22:59:01,898 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2021-10-22 22:59:01,900 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-22 22:59:01,901 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2021-10-22 22:59:01,955 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-10-22 22:59:01,955 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-22 22:59:01,968 WARN  L261         TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 70 conjunts are in the unsatisfiable core
[2021-10-22 22:59:01,972 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-10-22 22:59:02,411 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked.
[2021-10-22 22:59:02,411 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349723368] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-22 22:59:02,411 INFO  L186   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-22 22:59:02,411 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 14
[2021-10-22 22:59:02,412 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123482945]
[2021-10-22 22:59:02,413 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2021-10-22 22:59:02,414 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-22 22:59:02,415 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2021-10-22 22:59:02,416 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210
[2021-10-22 22:59:02,416 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-10-22 22:59:02,416 INFO  L470      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-10-22 22:59:02,416 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 14 states have internal predecessors, (77), 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)
[2021-10-22 22:59:02,416 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-10-22 22:59:02,416 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-10-22 22:59:02,778 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-10-22 22:59:02,779 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2021-10-22 22:59:02,799 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2021-10-22 22:59:02,996 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1
[2021-10-22 22:59:02,996 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ServerThreadErr0ASSERT_VIOLATIONASSERT === [ServerThreadErr0ASSERT_VIOLATIONASSERT] ===
[2021-10-22 22:59:02,997 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-10-22 22:59:02,997 INFO  L82        PathProgramCache]: Analyzing trace with hash -1190779840, now seen corresponding path program 1 times
[2021-10-22 22:59:02,997 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-22 22:59:02,997 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503945168]
[2021-10-22 22:59:02,997 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-22 22:59:02,997 INFO  L128          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-22 22:59:03,027 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-22 22:59:03,278 INFO  L134       CoverageAnalysis]: Checked inductivity of 251 backedges. 74 proven. 98 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked.
[2021-10-22 22:59:03,278 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-22 22:59:03,278 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503945168]
[2021-10-22 22:59:03,278 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503945168] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-22 22:59:03,279 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [619443844]
[2021-10-22 22:59:03,279 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-22 22:59:03,279 INFO  L170          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-22 22:59:03,279 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2021-10-22 22:59:03,280 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-22 22:59:03,281 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2021-10-22 22:59:03,377 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-22 22:59:03,380 WARN  L261         TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 145 conjunts are in the unsatisfiable core
[2021-10-22 22:59:03,382 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-10-22 22:59:03,905 INFO  L134       CoverageAnalysis]: Checked inductivity of 251 backedges. 0 proven. 163 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked.
[2021-10-22 22:59:03,906 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [619443844] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-22 22:59:03,906 INFO  L186   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-22 22:59:03,906 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 16
[2021-10-22 22:59:03,906 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766551914]
[2021-10-22 22:59:03,907 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 17 states
[2021-10-22 22:59:03,907 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-22 22:59:03,907 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2021-10-22 22:59:03,907 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272
[2021-10-22 22:59:03,907 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-10-22 22:59:03,908 INFO  L470      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-10-22 22:59:03,908 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 17 states, 17 states have (on average 5.823529411764706) internal successors, (99), 16 states have internal predecessors, (99), 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)
[2021-10-22 22:59:03,908 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-10-22 22:59:03,908 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. 
[2021-10-22 22:59:03,908 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-10-22 22:59:04,481 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-10-22 22:59:04,482 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2021-10-22 22:59:04,482 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2021-10-22 22:59:04,516 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2021-10-22 22:59:04,701 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-22 22:59:04,702 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ServerThreadErr0ASSERT_VIOLATIONASSERT === [ServerThreadErr0ASSERT_VIOLATIONASSERT] ===
[2021-10-22 22:59:04,702 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-10-22 22:59:04,702 INFO  L82        PathProgramCache]: Analyzing trace with hash 510539820, now seen corresponding path program 2 times
[2021-10-22 22:59:04,702 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-22 22:59:04,702 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28693204]
[2021-10-22 22:59:04,702 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-22 22:59:04,703 INFO  L128          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-22 22:59:04,758 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-22 22:59:05,121 INFO  L134       CoverageAnalysis]: Checked inductivity of 373 backedges. 113 proven. 163 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked.
[2021-10-22 22:59:05,122 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-22 22:59:05,122 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28693204]
[2021-10-22 22:59:05,122 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28693204] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-22 22:59:05,122 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2103147447]
[2021-10-22 22:59:05,122 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2021-10-22 22:59:05,122 INFO  L170          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-22 22:59:05,122 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2021-10-22 22:59:05,123 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-22 22:59:05,124 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2021-10-22 22:59:05,284 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-10-22 22:59:05,284 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2021-10-22 22:59:05,286 WARN  L261         TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 175 conjunts are in the unsatisfiable core
[2021-10-22 22:59:05,288 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-10-22 22:59:05,852 INFO  L134       CoverageAnalysis]: Checked inductivity of 373 backedges. 0 proven. 266 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked.
[2021-10-22 22:59:05,852 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2103147447] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-22 22:59:05,852 INFO  L186   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-22 22:59:05,852 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 18
[2021-10-22 22:59:05,852 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414151638]
[2021-10-22 22:59:05,853 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 19 states
[2021-10-22 22:59:05,853 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-22 22:59:05,853 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2021-10-22 22:59:05,854 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342
[2021-10-22 22:59:05,854 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-10-22 22:59:05,854 INFO  L470      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-10-22 22:59:05,854 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 19 states, 19 states have (on average 5.631578947368421) internal successors, (107), 18 states have internal predecessors, (107), 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)
[2021-10-22 22:59:05,854 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-10-22 22:59:05,854 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. 
[2021-10-22 22:59:05,854 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. 
[2021-10-22 22:59:05,854 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-10-22 22:59:07,536 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-10-22 22:59:07,537 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2021-10-22 22:59:07,537 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2021-10-22 22:59:07,537 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. 
[2021-10-22 22:59:07,556 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2021-10-22 22:59:07,754 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-22 22:59:07,754 INFO  L402      AbstractCegarLoop]: === Iteration 5 === Targeting ServerThreadErr0ASSERT_VIOLATIONASSERT === [ServerThreadErr0ASSERT_VIOLATIONASSERT] ===
[2021-10-22 22:59:07,754 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-10-22 22:59:07,754 INFO  L82        PathProgramCache]: Analyzing trace with hash -359625155, now seen corresponding path program 1 times
[2021-10-22 22:59:07,755 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-22 22:59:07,755 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783412415]
[2021-10-22 22:59:07,755 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-22 22:59:07,755 INFO  L128          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-22 22:59:07,780 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-22 22:59:08,209 INFO  L134       CoverageAnalysis]: Checked inductivity of 604 backedges. 251 proven. 208 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked.
[2021-10-22 22:59:08,210 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-22 22:59:08,210 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783412415]
[2021-10-22 22:59:08,210 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783412415] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-22 22:59:08,210 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600858203]
[2021-10-22 22:59:08,210 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-22 22:59:08,210 INFO  L170          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-22 22:59:08,210 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2021-10-22 22:59:08,211 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-22 22:59:08,224 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2021-10-22 22:59:08,458 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-22 22:59:08,461 WARN  L261         TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 240 conjunts are in the unsatisfiable core
[2021-10-22 22:59:08,463 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-10-22 22:59:09,351 INFO  L134       CoverageAnalysis]: Checked inductivity of 604 backedges. 0 proven. 456 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked.
[2021-10-22 22:59:09,351 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [600858203] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-22 22:59:09,351 INFO  L186   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-22 22:59:09,351 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 20
[2021-10-22 22:59:09,351 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515693765]
[2021-10-22 22:59:09,352 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 21 states
[2021-10-22 22:59:09,352 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-22 22:59:09,352 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2021-10-22 22:59:09,353 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=134, Invalid=286, Unknown=0, NotChecked=0, Total=420
[2021-10-22 22:59:09,353 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-10-22 22:59:09,353 INFO  L470      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-10-22 22:59:09,353 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 21 states, 21 states have (on average 6.142857142857143) internal successors, (129), 20 states have internal predecessors, (129), 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)
[2021-10-22 22:59:09,353 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-10-22 22:59:09,353 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. 
[2021-10-22 22:59:09,353 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. 
[2021-10-22 22:59:09,353 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. 
[2021-10-22 22:59:09,353 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-10-22 22:59:18,728 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-10-22 22:59:18,728 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2021-10-22 22:59:18,728 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2021-10-22 22:59:18,728 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. 
[2021-10-22 22:59:18,728 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. 
[2021-10-22 22:59:18,749 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0
[2021-10-22 22:59:18,929 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-22 22:59:18,929 INFO  L402      AbstractCegarLoop]: === Iteration 6 === Targeting ServerThreadErr0ASSERT_VIOLATIONASSERT === [ServerThreadErr0ASSERT_VIOLATIONASSERT] ===
[2021-10-22 22:59:18,930 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-10-22 22:59:18,930 INFO  L82        PathProgramCache]: Analyzing trace with hash -1175874254, now seen corresponding path program 1 times
[2021-10-22 22:59:18,930 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-22 22:59:18,930 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369472496]
[2021-10-22 22:59:18,930 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-22 22:59:18,930 INFO  L128          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-22 22:59:18,975 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-22 22:59:19,413 INFO  L134       CoverageAnalysis]: Checked inductivity of 757 backedges. 331 proven. 257 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked.
[2021-10-22 22:59:19,414 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-22 22:59:19,414 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369472496]
[2021-10-22 22:59:19,414 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369472496] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-22 22:59:19,414 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748788676]
[2021-10-22 22:59:19,414 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-22 22:59:19,414 INFO  L170          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-22 22:59:19,414 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2021-10-22 22:59:19,415 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-22 22:59:19,416 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2021-10-22 22:59:19,735 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-22 22:59:19,739 WARN  L261         TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 275 conjunts are in the unsatisfiable core
[2021-10-22 22:59:19,741 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-10-22 22:59:20,695 INFO  L134       CoverageAnalysis]: Checked inductivity of 757 backedges. 0 proven. 586 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked.
[2021-10-22 22:59:20,695 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748788676] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-22 22:59:20,695 INFO  L186   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-22 22:59:20,695 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10] total 22
[2021-10-22 22:59:20,696 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465506333]
[2021-10-22 22:59:20,696 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2021-10-22 22:59:20,696 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-22 22:59:20,696 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2021-10-22 22:59:20,697 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=159, Invalid=347, Unknown=0, NotChecked=0, Total=506
[2021-10-22 22:59:20,697 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-10-22 22:59:20,697 INFO  L470      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-10-22 22:59:20,697 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 23 states, 23 states have (on average 6.217391304347826) internal successors, (143), 22 states have internal predecessors, (143), 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)
[2021-10-22 22:59:20,697 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-10-22 22:59:20,697 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. 
[2021-10-22 22:59:20,697 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. 
[2021-10-22 22:59:20,697 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. 
[2021-10-22 22:59:20,698 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. 
[2021-10-22 22:59:20,698 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-10-22 23:00:31,170 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-10-22 23:00:31,171 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2021-10-22 23:00:31,172 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2021-10-22 23:00:31,172 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. 
[2021-10-22 23:00:31,172 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. 
[2021-10-22 23:00:31,172 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. 
[2021-10-22 23:00:31,192 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2021-10-22 23:00:31,383 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-22 23:00:31,383 INFO  L402      AbstractCegarLoop]: === Iteration 7 === Targeting ServerThreadErr0ASSERT_VIOLATIONASSERT === [ServerThreadErr0ASSERT_VIOLATIONASSERT] ===
[2021-10-22 23:00:31,384 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-10-22 23:00:31,384 INFO  L82        PathProgramCache]: Analyzing trace with hash -533683293, now seen corresponding path program 1 times
[2021-10-22 23:00:31,385 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-22 23:00:31,385 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528960074]
[2021-10-22 23:00:31,385 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-22 23:00:31,385 INFO  L128          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-22 23:00:31,438 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-22 23:00:32,045 INFO  L134       CoverageAnalysis]: Checked inductivity of 1472 backedges. 473 proven. 616 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked.
[2021-10-22 23:00:32,045 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-22 23:00:32,045 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528960074]
[2021-10-22 23:00:32,045 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528960074] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-22 23:00:32,045 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463962064]
[2021-10-22 23:00:32,045 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-22 23:00:32,046 INFO  L170          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-22 23:00:32,046 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2021-10-22 23:00:32,046 INFO  L229       MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-22 23:00:32,047 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2021-10-22 23:00:32,695 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-22 23:00:32,701 WARN  L261         TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 400 conjunts are in the unsatisfiable core
[2021-10-22 23:00:32,704 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-10-22 23:00:34,017 INFO  L134       CoverageAnalysis]: Checked inductivity of 1472 backedges. 0 proven. 1087 refuted. 0 times theorem prover too weak. 385 trivial. 0 not checked.
[2021-10-22 23:00:34,018 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [463962064] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-22 23:00:34,018 INFO  L186   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-22 23:00:34,018 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11] total 24
[2021-10-22 23:00:34,018 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390718325]
[2021-10-22 23:00:34,018 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 25 states
[2021-10-22 23:00:34,019 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-22 23:00:34,019 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2021-10-22 23:00:34,019 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=414, Unknown=0, NotChecked=0, Total=600
[2021-10-22 23:00:34,019 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-10-22 23:00:34,019 INFO  L470      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-10-22 23:00:34,020 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 25 states, 25 states have (on average 6.36) internal successors, (159), 24 states have internal predecessors, (159), 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)
[2021-10-22 23:00:34,020 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-10-22 23:00:34,020 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. 
[2021-10-22 23:00:34,020 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. 
[2021-10-22 23:00:34,020 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. 
[2021-10-22 23:00:34,020 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. 
[2021-10-22 23:00:34,020 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. 
[2021-10-22 23:00:34,020 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.