/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-NoLbe-Lockstep.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-serverassert08.bpl


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


This is Ultimate 0.2.1-1c3aa5735269c4be989a50fc1da9ea7b9492ef29-1c3aa57
[2021-07-01 13:04:55,064 INFO  L177        SettingsManager]: Resetting all preferences to default values...
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[2021-07-01 13:04:55,160 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-NoLbe-Lockstep.epf
[2021-07-01 13:04:55,204 INFO  L113        SettingsManager]: Loading preferences was successful
[2021-07-01 13:04:55,204 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2021-07-01 13:04:55,205 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-07-01 13:04:55,205 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-07-01 13:04:55,207 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-07-01 13:04:55,207 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2021-07-01 13:04:55,207 INFO  L138        SettingsManager]:  * Use SBE=true
[2021-07-01 13:04:55,207 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-07-01 13:04:55,207 INFO  L138        SettingsManager]:  * sizeof long=4
[2021-07-01 13:04:55,208 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2021-07-01 13:04:55,208 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2021-07-01 13:04:55,208 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2021-07-01 13:04:55,208 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2021-07-01 13:04:55,208 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-07-01 13:04:55,209 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2021-07-01 13:04:55,209 INFO  L138        SettingsManager]:  * sizeof long double=12
[2021-07-01 13:04:55,209 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2021-07-01 13:04:55,209 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2021-07-01 13:04:55,209 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2021-07-01 13:04:55,209 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-07-01 13:04:55,209 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2021-07-01 13:04:55,209 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2021-07-01 13:04:55,209 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2021-07-01 13:04:55,209 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-07-01 13:04:55,210 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-07-01 13:04:55,210 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2021-07-01 13:04:55,210 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-07-01 13:04:55,210 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2021-07-01 13:04:55,210 INFO  L138        SettingsManager]:  * DFS Order used in POR=PSEUDO_LOCKSTEP
[2021-07-01 13:04:55,210 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-07-01 13:04:55,210 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2021-07-01 13:04:55,210 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA
[2021-07-01 13:04:55,210 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-07-01 13:04:55,211 INFO  L138        SettingsManager]:  * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER
[2021-07-01 13:04:55,211 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2021-07-01 13:04:55,453 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2021-07-01 13:04:55,469 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-07-01 13:04:55,471 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-07-01 13:04:55,471 INFO  L271        PluginConnector]: Initializing Boogie PL CUP Parser...
[2021-07-01 13:04:55,472 INFO  L275        PluginConnector]: Boogie PL CUP Parser initialized
[2021-07-01 13:04:55,473 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-serverassert08.bpl
[2021-07-01 13:04:55,473 INFO  L110           BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-serverassert08.bpl'
[2021-07-01 13:04:55,487 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-07-01 13:04:55,488 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2021-07-01 13:04:55,489 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-07-01 13:04:55,489 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-07-01 13:04:55,489 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2021-07-01 13:04:55,497 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth-serverassert08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 01:04:55" (1/1) ...
[2021-07-01 13:04:55,501 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth-serverassert08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 01:04:55" (1/1) ...
[2021-07-01 13:04:55,511 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-07-01 13:04:55,512 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-07-01 13:04:55,512 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2021-07-01 13:04:55,512 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2021-07-01 13:04:55,517 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth-serverassert08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 01:04:55" (1/1) ...
[2021-07-01 13:04:55,517 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth-serverassert08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 01:04:55" (1/1) ...
[2021-07-01 13:04:55,517 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth-serverassert08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 01:04:55" (1/1) ...
[2021-07-01 13:04:55,517 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth-serverassert08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 01:04:55" (1/1) ...
[2021-07-01 13:04:55,518 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth-serverassert08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 01:04:55" (1/1) ...
[2021-07-01 13:04:55,520 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth-serverassert08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 01:04:55" (1/1) ...
[2021-07-01 13:04:55,520 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth-serverassert08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 01:04:55" (1/1) ...
[2021-07-01 13:04:55,521 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-07-01 13:04:55,522 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-07-01 13:04:55,522 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2021-07-01 13:04:55,522 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2021-07-01 13:04:55,523 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth-serverassert08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 01:04:55" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-07-01 13:04:55,571 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration
[2021-07-01 13:04:55,571 INFO  L130     BoogieDeclarations]: Found specification of procedure DeviceThread
[2021-07-01 13:04:55,571 INFO  L138     BoogieDeclarations]: Found implementation of procedure DeviceThread
[2021-07-01 13:04:55,571 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration
[2021-07-01 13:04:55,571 INFO  L130     BoogieDeclarations]: Found specification of procedure ServerThread
[2021-07-01 13:04:55,571 INFO  L138     BoogieDeclarations]: Found implementation of procedure ServerThread
[2021-07-01 13:04:55,572 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration
[2021-07-01 13:04:55,572 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-07-01 13:04:55,572 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-07-01 13:04:55,572 WARN  L209             CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement
[2021-07-01 13:04:55,783 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-07-01 13:04:55,783 INFO  L299             CfgBuilder]: Removed 7 assume(true) statements.
[2021-07-01 13:04:55,784 WARN  L327             CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadEXIT is neither atomic block end nor error location.
[2021-07-01 13:04:55,785 INFO  L202        PluginConnector]: Adding new model bluetooth-serverassert08.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 01:04:55 BoogieIcfgContainer
[2021-07-01 13:04:55,785 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-07-01 13:04:55,786 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-07-01 13:04:55,786 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2021-07-01 13:04:55,788 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2021-07-01 13:04:55,788 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-serverassert08.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 01:04:55" (1/2) ...
[2021-07-01 13:04:55,789 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@652bea05 and model type bluetooth-serverassert08.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 01:04:55, skipping insertion in model container
[2021-07-01 13:04:55,789 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-serverassert08.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 01:04:55" (2/2) ...
[2021-07-01 13:04:55,789 INFO  L111   eAbstractionObserver]: Analyzing ICFG bluetooth-serverassert08.bpl
[2021-07-01 13:04:55,793 WARN  L148   ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program
[2021-07-01 13:04:55,793 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-07-01 13:04:55,793 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-07-01 13:04:55,794 INFO  L474   ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2021-07-01 13:04:55,863 INFO  L149    ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions.
[2021-07-01 13:04:55,881 INFO  L255      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000
[2021-07-01 13:04:55,934 INFO  L378      AbstractCegarLoop]: Interprodecural is true
[2021-07-01 13:04:55,934 INFO  L379      AbstractCegarLoop]: Hoare is false
[2021-07-01 13:04:55,934 INFO  L380      AbstractCegarLoop]: Compute interpolants for FPandBP
[2021-07-01 13:04:55,934 INFO  L381      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2021-07-01 13:04:55,934 INFO  L382      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-07-01 13:04:55,934 INFO  L383      AbstractCegarLoop]: Difference is false
[2021-07-01 13:04:55,934 INFO  L384      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-07-01 13:04:55,934 INFO  L388      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ServerThreadThread1of1ForFork0========
[2021-07-01 13:04:56,437 INFO  L430      AbstractCegarLoop]: === Iteration 1 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]===
[2021-07-01 13:04:56,441 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-01 13:04:56,441 INFO  L82        PathProgramCache]: Analyzing trace with hash -984206323, now seen corresponding path program 1 times
[2021-07-01 13:04:56,447 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-01 13:04:56,447 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344558373]
[2021-07-01 13:04:56,447 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-01 13:04:56,498 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 13:04:56,550 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-07-01 13:04:56,551 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-01 13:04:56,551 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344558373]
[2021-07-01 13:04:56,552 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344558373] provided 1 perfect and 0 imperfect interpolant sequences
[2021-07-01 13:04:56,552 INFO  L226   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-07-01 13:04:56,552 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2021-07-01 13:04:56,552 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62093271]
[2021-07-01 13:04:56,555 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 5 states
[2021-07-01 13:04:56,555 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-01 13:04:56,565 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-07-01 13:04:56,566 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2021-07-01 13:04:56,566 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 13:04:56,567 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-01 13:04:56,568 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 5 states, 4 states have (on average 4.0) internal successors, (16), 5 states have internal predecessors, (16), 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)
[2021-07-01 13:04:56,568 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 13:04:56,647 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 13:04:56,647 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-07-01 13:04:56,647 INFO  L430      AbstractCegarLoop]: === Iteration 2 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]===
[2021-07-01 13:04:56,649 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-01 13:04:56,649 INFO  L82        PathProgramCache]: Analyzing trace with hash 325633002, now seen corresponding path program 1 times
[2021-07-01 13:04:56,649 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-01 13:04:56,650 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049977515]
[2021-07-01 13:04:56,650 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-01 13:04:56,664 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 13:04:56,685 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-07-01 13:04:56,686 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-01 13:04:56,686 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049977515]
[2021-07-01 13:04:56,686 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049977515] provided 1 perfect and 0 imperfect interpolant sequences
[2021-07-01 13:04:56,686 INFO  L226   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-07-01 13:04:56,686 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-07-01 13:04:56,687 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689246553]
[2021-07-01 13:04:56,688 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 3 states
[2021-07-01 13:04:56,688 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-01 13:04:56,689 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-07-01 13:04:56,689 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-07-01 13:04:56,689 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 13:04:56,689 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-01 13:04:56,690 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 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)
[2021-07-01 13:04:56,690 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 13:04:56,690 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 13:04:57,703 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 13:04:57,704 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 13:04:57,704 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-07-01 13:04:57,704 INFO  L430      AbstractCegarLoop]: === Iteration 3 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]===
[2021-07-01 13:04:57,704 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-01 13:04:57,704 INFO  L82        PathProgramCache]: Analyzing trace with hash -450660414, now seen corresponding path program 1 times
[2021-07-01 13:04:57,704 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-01 13:04:57,705 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067539678]
[2021-07-01 13:04:57,705 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-01 13:04:57,712 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 13:04:57,752 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-07-01 13:04:57,752 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-01 13:04:57,752 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067539678]
[2021-07-01 13:04:57,752 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067539678] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 13:04:57,752 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461810880]
[2021-07-01 13:04:57,752 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-07-01 13:04:57,782 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 13:04:57,783 INFO  L263         TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 8 conjunts are in the unsatisfiable core
[2021-07-01 13:04:57,786 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-07-01 13:04:57,880 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-07-01 13:04:57,880 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleZ3 [461810880] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 13:04:57,880 INFO  L226   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-07-01 13:04:57,880 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7
[2021-07-01 13:04:57,880 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561939089]
[2021-07-01 13:04:57,880 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 9 states
[2021-07-01 13:04:57,881 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-01 13:04:57,881 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2021-07-01 13:04:57,881 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72
[2021-07-01 13:04:57,881 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 13:04:57,881 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-01 13:04:57,881 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 9 states, 8 states have (on average 4.0) internal successors, (32), 8 states have internal predecessors, (32), 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)
[2021-07-01 13:04:57,881 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 13:04:57,881 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 13:04:57,881 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 13:04:58,899 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 13:04:58,900 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 13:04:58,900 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2021-07-01 13:04:59,118 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-07-01 13:04:59,118 INFO  L430      AbstractCegarLoop]: === Iteration 4 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]===
[2021-07-01 13:04:59,119 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-01 13:04:59,120 INFO  L82        PathProgramCache]: Analyzing trace with hash -1411941176, now seen corresponding path program 1 times
[2021-07-01 13:04:59,120 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-01 13:04:59,120 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137350802]
[2021-07-01 13:04:59,120 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-01 13:04:59,140 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 13:04:59,212 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2021-07-01 13:04:59,212 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-01 13:04:59,212 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137350802]
[2021-07-01 13:04:59,212 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137350802] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 13:04:59,213 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321980747]
[2021-07-01 13:04:59,213 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-07-01 13:04:59,243 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 13:04:59,244 INFO  L263         TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 17 conjunts are in the unsatisfiable core
[2021-07-01 13:04:59,245 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-07-01 13:04:59,332 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2021-07-01 13:04:59,332 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1321980747] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 13:04:59,332 INFO  L226   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-07-01 13:04:59,332 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4
[2021-07-01 13:04:59,332 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928190666]
[2021-07-01 13:04:59,333 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 6 states
[2021-07-01 13:04:59,334 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-01 13:04:59,334 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-07-01 13:04:59,335 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2021-07-01 13:04:59,335 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 13:04:59,335 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-01 13:04:59,335 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 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)
[2021-07-01 13:04:59,336 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 13:04:59,339 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 13:04:59,339 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. 
[2021-07-01 13:04:59,339 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 13:04:59,999 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 13:04:59,999 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 13:05:00,000 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2021-07-01 13:05:00,000 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2021-07-01 13:05:00,216 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-07-01 13:05:00,217 INFO  L430      AbstractCegarLoop]: === Iteration 5 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]===
[2021-07-01 13:05:00,217 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-01 13:05:00,217 INFO  L82        PathProgramCache]: Analyzing trace with hash -1837151051, now seen corresponding path program 1 times
[2021-07-01 13:05:00,217 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-01 13:05:00,218 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204103017]
[2021-07-01 13:05:00,218 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-01 13:05:00,235 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 13:05:00,282 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-07-01 13:05:00,283 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-01 13:05:00,283 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204103017]
[2021-07-01 13:05:00,283 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204103017] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 13:05:00,283 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571908637]
[2021-07-01 13:05:00,283 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-07-01 13:05:00,310 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 13:05:00,311 INFO  L263         TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 14 conjunts are in the unsatisfiable core
[2021-07-01 13:05:00,312 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-07-01 13:05:00,383 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-07-01 13:05:00,384 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571908637] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 13:05:00,384 INFO  L226   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-07-01 13:05:00,384 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8
[2021-07-01 13:05:00,384 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526288826]
[2021-07-01 13:05:00,384 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 10 states
[2021-07-01 13:05:00,384 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-01 13:05:00,385 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2021-07-01 13:05:00,385 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90
[2021-07-01 13:05:00,385 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 13:05:00,385 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-01 13:05:00,385 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 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)
[2021-07-01 13:05:00,385 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 13:05:00,385 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 13:05:00,385 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. 
[2021-07-01 13:05:00,385 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. 
[2021-07-01 13:05:00,385 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 13:05:01,398 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 13:05:01,399 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 13:05:01,399 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2021-07-01 13:05:01,399 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2021-07-01 13:05:01,399 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2021-07-01 13:05:01,615 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-07-01 13:05:01,615 INFO  L430      AbstractCegarLoop]: === Iteration 6 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]===
[2021-07-01 13:05:01,616 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-01 13:05:01,616 INFO  L82        PathProgramCache]: Analyzing trace with hash -1455915994, now seen corresponding path program 1 times
[2021-07-01 13:05:01,616 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-01 13:05:01,616 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125571583]
[2021-07-01 13:05:01,616 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-01 13:05:01,627 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 13:05:01,680 INFO  L134       CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2021-07-01 13:05:01,680 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-01 13:05:01,680 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125571583]
[2021-07-01 13:05:01,680 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125571583] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 13:05:01,680 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [967695834]
[2021-07-01 13:05:01,680 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-07-01 13:05:01,769 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 13:05:01,770 INFO  L263         TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 41 conjunts are in the unsatisfiable core
[2021-07-01 13:05:01,771 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-07-01 13:05:01,844 INFO  L134       CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2021-07-01 13:05:01,845 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleZ3 [967695834] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 13:05:01,845 INFO  L226   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-07-01 13:05:01,845 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5
[2021-07-01 13:05:01,845 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882386035]
[2021-07-01 13:05:01,845 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 7 states
[2021-07-01 13:05:01,845 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-01 13:05:01,846 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2021-07-01 13:05:01,846 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2021-07-01 13:05:01,846 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 13:05:01,846 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-01 13:05:01,846 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 7 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 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)
[2021-07-01 13:05:01,846 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 13:05:01,846 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 13:05:01,846 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. 
[2021-07-01 13:05:01,846 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. 
[2021-07-01 13:05:01,846 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. 
[2021-07-01 13:05:01,846 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 13:05:03,413 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 13:05:03,413 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 13:05:03,413 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2021-07-01 13:05:03,413 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2021-07-01 13:05:03,413 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2021-07-01 13:05:03,413 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2021-07-01 13:05:03,627 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-07-01 13:05:03,627 INFO  L430      AbstractCegarLoop]: === Iteration 7 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]===
[2021-07-01 13:05:03,627 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-01 13:05:03,627 INFO  L82        PathProgramCache]: Analyzing trace with hash 1047030636, now seen corresponding path program 1 times
[2021-07-01 13:05:03,627 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-01 13:05:03,628 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802016333]
[2021-07-01 13:05:03,628 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-01 13:05:03,642 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 13:05:03,699 INFO  L134       CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2021-07-01 13:05:03,699 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-01 13:05:03,699 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802016333]
[2021-07-01 13:05:03,699 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802016333] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 13:05:03,700 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897843911]
[2021-07-01 13:05:03,700 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-07-01 13:05:03,749 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 13:05:03,750 INFO  L263         TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 23 conjunts are in the unsatisfiable core
[2021-07-01 13:05:03,751 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-07-01 13:05:03,892 INFO  L134       CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2021-07-01 13:05:03,893 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897843911] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 13:05:03,893 INFO  L226   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-07-01 13:05:03,893 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9
[2021-07-01 13:05:03,893 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965177035]
[2021-07-01 13:05:03,893 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 11 states
[2021-07-01 13:05:03,893 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-01 13:05:03,894 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2021-07-01 13:05:03,894 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110
[2021-07-01 13:05:03,894 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 13:05:03,894 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-01 13:05:03,894 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 11 states, 10 states have (on average 3.9) internal successors, (39), 10 states have internal predecessors, (39), 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)
[2021-07-01 13:05:03,894 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 13:05:03,894 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 13:05:03,894 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. 
[2021-07-01 13:05:03,894 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. 
[2021-07-01 13:05:03,894 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. 
[2021-07-01 13:05:03,894 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. 
[2021-07-01 13:05:03,894 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 13:05:06,935 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 13:05:06,935 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 13:05:06,935 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2021-07-01 13:05:06,935 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2021-07-01 13:05:06,936 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2021-07-01 13:05:06,936 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2021-07-01 13:05:06,936 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2021-07-01 13:05:07,152 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-07-01 13:05:07,152 INFO  L430      AbstractCegarLoop]: === Iteration 8 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]===
[2021-07-01 13:05:07,153 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-01 13:05:07,153 INFO  L82        PathProgramCache]: Analyzing trace with hash 257771112, now seen corresponding path program 1 times
[2021-07-01 13:05:07,153 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-01 13:05:07,153 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708672487]
[2021-07-01 13:05:07,153 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-01 13:05:07,169 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 13:05:07,238 INFO  L134       CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2021-07-01 13:05:07,238 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-01 13:05:07,238 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708672487]
[2021-07-01 13:05:07,239 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708672487] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 13:05:07,239 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [685807758]
[2021-07-01 13:05:07,239 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-07-01 13:05:07,294 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 13:05:07,295 INFO  L263         TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 57 conjunts are in the unsatisfiable core
[2021-07-01 13:05:07,296 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-07-01 13:05:07,410 INFO  L134       CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2021-07-01 13:05:07,410 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleZ3 [685807758] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 13:05:07,410 INFO  L226   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-07-01 13:05:07,410 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6
[2021-07-01 13:05:07,410 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877904477]
[2021-07-01 13:05:07,411 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 8 states
[2021-07-01 13:05:07,411 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-01 13:05:07,411 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2021-07-01 13:05:07,411 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2021-07-01 13:05:07,411 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 13:05:07,411 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-01 13:05:07,411 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 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)
[2021-07-01 13:05:07,411 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 13:05:07,412 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 13:05:07,412 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. 
[2021-07-01 13:05:07,412 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. 
[2021-07-01 13:05:07,412 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. 
[2021-07-01 13:05:07,412 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. 
[2021-07-01 13:05:07,412 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. 
[2021-07-01 13:05:07,412 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 13:05:22,356 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 13:05:22,356 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 13:05:22,356 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2021-07-01 13:05:22,356 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2021-07-01 13:05:22,356 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2021-07-01 13:05:22,356 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2021-07-01 13:05:22,356 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2021-07-01 13:05:22,356 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2021-07-01 13:05:22,569 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-07-01 13:05:22,570 INFO  L430      AbstractCegarLoop]: === Iteration 9 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]===
[2021-07-01 13:05:22,570 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-01 13:05:22,570 INFO  L82        PathProgramCache]: Analyzing trace with hash -1838707902, now seen corresponding path program 1 times
[2021-07-01 13:05:22,570 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-01 13:05:22,570 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823043963]
[2021-07-01 13:05:22,570 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-01 13:05:22,604 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 13:05:22,771 INFO  L134       CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2021-07-01 13:05:22,771 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-01 13:05:22,771 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823043963]
[2021-07-01 13:05:22,771 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823043963] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 13:05:22,773 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95703285]
[2021-07-01 13:05:22,773 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-07-01 13:05:22,844 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 13:05:22,845 WARN  L261         TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 89 conjunts are in the unsatisfiable core
[2021-07-01 13:05:22,856 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-07-01 13:05:23,032 INFO  L134       CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2021-07-01 13:05:23,032 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleZ3 [95703285] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 13:05:23,032 INFO  L226   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-07-01 13:05:23,032 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7
[2021-07-01 13:05:23,034 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317735592]
[2021-07-01 13:05:23,035 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 9 states
[2021-07-01 13:05:23,035 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-01 13:05:23,036 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2021-07-01 13:05:23,036 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72
[2021-07-01 13:05:23,036 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 13:05:23,036 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-01 13:05:23,036 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 9 states, 8 states have (on average 6.875) internal successors, (55), 8 states have internal predecessors, (55), 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)
[2021-07-01 13:05:23,036 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 13:05:23,036 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 13:05:23,036 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. 
[2021-07-01 13:05:23,036 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. 
[2021-07-01 13:05:23,036 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. 
[2021-07-01 13:05:23,036 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. 
[2021-07-01 13:05:23,036 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. 
[2021-07-01 13:05:23,036 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. 
[2021-07-01 13:05:23,036 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 13:05:52,190 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 13:05:52,190 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 13:05:52,190 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2021-07-01 13:05:52,190 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2021-07-01 13:05:52,190 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2021-07-01 13:05:52,190 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2021-07-01 13:05:52,190 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2021-07-01 13:05:52,190 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2021-07-01 13:05:52,191 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2021-07-01 13:05:52,404 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11
[2021-07-01 13:05:52,405 INFO  L430      AbstractCegarLoop]: === Iteration 10 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]===
[2021-07-01 13:05:52,405 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-01 13:05:52,405 INFO  L82        PathProgramCache]: Analyzing trace with hash 834760570, now seen corresponding path program 1 times
[2021-07-01 13:05:52,405 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-01 13:05:52,406 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109280593]
[2021-07-01 13:05:52,406 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-01 13:05:52,412 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 13:05:52,477 INFO  L134       CoverageAnalysis]: Checked inductivity of 30 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2021-07-01 13:05:52,477 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-01 13:05:52,478 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109280593]
[2021-07-01 13:05:52,478 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109280593] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 13:05:52,478 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231038524]
[2021-07-01 13:05:52,478 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-07-01 13:05:52,509 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 13:05:52,510 INFO  L263         TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 35 conjunts are in the unsatisfiable core
[2021-07-01 13:05:52,511 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-07-01 13:05:52,611 INFO  L134       CoverageAnalysis]: Checked inductivity of 30 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2021-07-01 13:05:52,612 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231038524] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 13:05:52,612 INFO  L226   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-07-01 13:05:52,612 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10
[2021-07-01 13:05:52,612 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592862137]
[2021-07-01 13:05:52,612 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 12 states
[2021-07-01 13:05:52,612 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-01 13:05:52,613 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2021-07-01 13:05:52,613 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=78, Unknown=0, NotChecked=0, Total=132
[2021-07-01 13:05:52,613 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 13:05:52,613 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-01 13:05:52,613 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 12 states, 11 states have (on average 4.0) internal successors, (44), 11 states have internal predecessors, (44), 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)
[2021-07-01 13:05:52,613 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 13:05:52,613 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 13:05:52,613 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. 
[2021-07-01 13:05:52,613 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. 
[2021-07-01 13:05:52,613 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. 
[2021-07-01 13:05:52,613 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. 
[2021-07-01 13:05:52,613 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. 
[2021-07-01 13:05:52,614 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. 
[2021-07-01 13:05:52,614 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. 
[2021-07-01 13:05:52,614 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.