/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-DelaySleep-NoLbe-Lockstep.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-correct10.bpl


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


This is Ultimate 0.2.1-1c3aa5735269c4be989a50fc1da9ea7b9492ef29-1c3aa57
[2021-07-01 10:32:28,017 INFO  L177        SettingsManager]: Resetting all preferences to default values...
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[2021-07-01 10:32:28,068 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-07-01 10:32:28,068 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
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[2021-07-01 10:32:28,069 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
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[2021-07-01 10:32:28,082 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2021-07-01 10:32:28,082 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-DelaySleep-NoLbe-Lockstep.epf
[2021-07-01 10:32:28,098 INFO  L113        SettingsManager]: Loading preferences was successful
[2021-07-01 10:32:28,098 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2021-07-01 10:32:28,098 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-07-01 10:32:28,098 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-07-01 10:32:28,099 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-07-01 10:32:28,099 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2021-07-01 10:32:28,099 INFO  L138        SettingsManager]:  * Use SBE=true
[2021-07-01 10:32:28,100 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-07-01 10:32:28,100 INFO  L138        SettingsManager]:  * sizeof long=4
[2021-07-01 10:32:28,100 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2021-07-01 10:32:28,100 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2021-07-01 10:32:28,114 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2021-07-01 10:32:28,115 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2021-07-01 10:32:28,115 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-07-01 10:32:28,115 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2021-07-01 10:32:28,115 INFO  L138        SettingsManager]:  * sizeof long double=12
[2021-07-01 10:32:28,115 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2021-07-01 10:32:28,115 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2021-07-01 10:32:28,115 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2021-07-01 10:32:28,116 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-07-01 10:32:28,116 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2021-07-01 10:32:28,116 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2021-07-01 10:32:28,116 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2021-07-01 10:32:28,116 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-07-01 10:32:28,116 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-07-01 10:32:28,116 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2021-07-01 10:32:28,116 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-07-01 10:32:28,116 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2021-07-01 10:32:28,116 INFO  L138        SettingsManager]:  * DFS Order used in POR=PSEUDO_LOCKSTEP
[2021-07-01 10:32:28,117 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-07-01 10:32:28,117 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2021-07-01 10:32:28,117 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA
[2021-07-01 10:32:28,117 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-07-01 10:32:28,117 INFO  L138        SettingsManager]:  * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET
[2021-07-01 10:32:28,117 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2021-07-01 10:32:28,344 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2021-07-01 10:32:28,363 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-07-01 10:32:28,365 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-07-01 10:32:28,366 INFO  L271        PluginConnector]: Initializing Boogie PL CUP Parser...
[2021-07-01 10:32:28,367 INFO  L275        PluginConnector]: Boogie PL CUP Parser initialized
[2021-07-01 10:32:28,367 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-correct10.bpl
[2021-07-01 10:32:28,367 INFO  L110           BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-correct10.bpl'
[2021-07-01 10:32:28,382 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-07-01 10:32:28,383 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2021-07-01 10:32:28,384 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-07-01 10:32:28,384 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-07-01 10:32:28,384 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2021-07-01 10:32:28,393 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth-correct10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:32:28" (1/1) ...
[2021-07-01 10:32:28,397 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth-correct10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:32:28" (1/1) ...
[2021-07-01 10:32:28,407 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-07-01 10:32:28,408 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-07-01 10:32:28,409 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2021-07-01 10:32:28,409 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2021-07-01 10:32:28,414 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth-correct10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:32:28" (1/1) ...
[2021-07-01 10:32:28,414 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth-correct10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:32:28" (1/1) ...
[2021-07-01 10:32:28,415 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth-correct10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:32:28" (1/1) ...
[2021-07-01 10:32:28,415 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth-correct10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:32:28" (1/1) ...
[2021-07-01 10:32:28,416 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth-correct10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:32:28" (1/1) ...
[2021-07-01 10:32:28,418 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth-correct10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:32:28" (1/1) ...
[2021-07-01 10:32:28,418 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth-correct10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:32:28" (1/1) ...
[2021-07-01 10:32:28,419 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-07-01 10:32:28,419 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-07-01 10:32:28,420 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2021-07-01 10:32:28,420 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2021-07-01 10:32:28,420 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth-correct10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:32:28" (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 10:32:28,477 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure DeviceThreadWithAssert given in one single declaration
[2021-07-01 10:32:28,477 INFO  L130     BoogieDeclarations]: Found specification of procedure DeviceThreadWithAssert
[2021-07-01 10:32:28,477 INFO  L138     BoogieDeclarations]: Found implementation of procedure DeviceThreadWithAssert
[2021-07-01 10:32:28,477 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration
[2021-07-01 10:32:28,477 INFO  L130     BoogieDeclarations]: Found specification of procedure DeviceThread
[2021-07-01 10:32:28,478 INFO  L138     BoogieDeclarations]: Found implementation of procedure DeviceThread
[2021-07-01 10:32:28,478 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration
[2021-07-01 10:32:28,478 INFO  L130     BoogieDeclarations]: Found specification of procedure ServerThread
[2021-07-01 10:32:28,478 INFO  L138     BoogieDeclarations]: Found implementation of procedure ServerThread
[2021-07-01 10:32:28,478 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration
[2021-07-01 10:32:28,478 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-07-01 10:32:28,478 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-07-01 10:32:28,479 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 10:32:28,734 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-07-01 10:32:28,734 INFO  L299             CfgBuilder]: Removed 12 assume(true) statements.
[2021-07-01 10:32:28,735 WARN  L327             CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadWithAssertEXIT is neither atomic block end nor error location.
[2021-07-01 10:32:28,735 WARN  L327             CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadEXIT is neither atomic block end nor error location.
[2021-07-01 10:32:28,736 INFO  L202        PluginConnector]: Adding new model bluetooth-correct10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:32:28 BoogieIcfgContainer
[2021-07-01 10:32:28,736 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-07-01 10:32:28,737 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-07-01 10:32:28,738 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2021-07-01 10:32:28,739 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2021-07-01 10:32:28,740 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-correct10.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:32:28" (1/2) ...
[2021-07-01 10:32:28,740 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44ea0795 and model type bluetooth-correct10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 10:32:28, skipping insertion in model container
[2021-07-01 10:32:28,740 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-correct10.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:32:28" (2/2) ...
[2021-07-01 10:32:28,741 INFO  L111   eAbstractionObserver]: Analyzing ICFG bluetooth-correct10.bpl
[2021-07-01 10:32:28,745 WARN  L148   ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program
[2021-07-01 10:32:28,745 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-07-01 10:32:28,745 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-07-01 10:32:28,746 INFO  L474   ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2021-07-01 10:32:28,789 INFO  L149    ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions.
[2021-07-01 10:32:28,804 INFO  L255      AbstractCegarLoop]: Starting to check reachability of 11 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 10:32:28,841 INFO  L378      AbstractCegarLoop]: Interprodecural is true
[2021-07-01 10:32:28,841 INFO  L379      AbstractCegarLoop]: Hoare is false
[2021-07-01 10:32:28,841 INFO  L380      AbstractCegarLoop]: Compute interpolants for FPandBP
[2021-07-01 10:32:28,841 INFO  L381      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2021-07-01 10:32:28,841 INFO  L382      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-07-01 10:32:28,841 INFO  L383      AbstractCegarLoop]: Difference is false
[2021-07-01 10:32:28,841 INFO  L384      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-07-01 10:32:28,841 INFO  L388      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start========
[2021-07-01 10:40:12,320 INFO  L301   ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (1/2)
[2021-07-01 10:40:12,323 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 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000
[2021-07-01 10:40:12,333 INFO  L378      AbstractCegarLoop]: Interprodecural is true
[2021-07-01 10:40:12,333 INFO  L379      AbstractCegarLoop]: Hoare is false
[2021-07-01 10:40:12,333 INFO  L380      AbstractCegarLoop]: Compute interpolants for FPandBP
[2021-07-01 10:40:12,333 INFO  L381      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2021-07-01 10:40:12,333 INFO  L382      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-07-01 10:40:12,333 INFO  L383      AbstractCegarLoop]: Difference is false
[2021-07-01 10:40:12,333 INFO  L384      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-07-01 10:40:12,333 INFO  L388      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadWithAssertThread1of1ForFork1========
[2021-07-01 10:40:12,350 INFO  L430      AbstractCegarLoop]: === Iteration 1 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]===
[2021-07-01 10:40:12,353 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-01 10:40:12,354 INFO  L82        PathProgramCache]: Analyzing trace with hash 1584905554, now seen corresponding path program 1 times
[2021-07-01 10:40:12,358 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-01 10:40:12,359 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536834857]
[2021-07-01 10:40:12,359 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-01 10:40:12,400 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 10:40:12,428 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 10:40:12,428 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-01 10:40:12,428 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536834857]
[2021-07-01 10:40:12,429 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536834857] provided 1 perfect and 0 imperfect interpolant sequences
[2021-07-01 10:40:12,429 INFO  L226   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-07-01 10:40:12,429 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-07-01 10:40:12,429 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421507186]
[2021-07-01 10:40:12,432 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 3 states
[2021-07-01 10:40:12,433 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-01 10:40:12,439 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-07-01 10:40:12,441 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-07-01 10:40:12,441 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 10:40:12,442 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-01 10:40:12,442 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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 10:40:12,442 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 10:40:13,018 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 10:40:13,019 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-07-01 10:40:13,019 INFO  L430      AbstractCegarLoop]: === Iteration 2 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]===
[2021-07-01 10:40:13,019 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-01 10:40:13,019 INFO  L82        PathProgramCache]: Analyzing trace with hash 882416455, now seen corresponding path program 1 times
[2021-07-01 10:40:13,019 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-01 10:40:13,019 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468335047]
[2021-07-01 10:40:13,020 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-01 10:40:13,022 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 10:40:13,027 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 10:40:13,027 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-01 10:40:13,028 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468335047]
[2021-07-01 10:40:13,028 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468335047] provided 1 perfect and 0 imperfect interpolant sequences
[2021-07-01 10:40:13,028 INFO  L226   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-07-01 10:40:13,028 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-07-01 10:40:13,028 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659225208]
[2021-07-01 10:40:13,029 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 3 states
[2021-07-01 10:40:13,029 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-01 10:40:13,029 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-07-01 10:40:13,029 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-07-01 10:40:13,029 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 10:40:13,029 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-01 10:40:13,030 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 10:40:13,030 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 10:40:13,030 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 10:40:13,627 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 10:40:13,627 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 10:40:13,627 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-07-01 10:40:13,627 INFO  L430      AbstractCegarLoop]: === Iteration 3 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]===
[2021-07-01 10:40:13,628 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-01 10:40:13,628 INFO  L82        PathProgramCache]: Analyzing trace with hash 348478470, now seen corresponding path program 1 times
[2021-07-01 10:40:13,628 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-01 10:40:13,628 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736476584]
[2021-07-01 10:40:13,628 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-01 10:40:13,640 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 10:40:13,679 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 10:40:13,680 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-01 10:40:13,680 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736476584]
[2021-07-01 10:40:13,680 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736476584] provided 1 perfect and 0 imperfect interpolant sequences
[2021-07-01 10:40:13,680 INFO  L226   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-07-01 10:40:13,680 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2021-07-01 10:40:13,680 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817662162]
[2021-07-01 10:40:13,680 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 6 states
[2021-07-01 10:40:13,681 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-01 10:40:13,681 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-07-01 10:40:13,681 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30
[2021-07-01 10:40:13,681 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 10:40:13,682 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-01 10:40:13,682 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 6 states, 6 states have (on average 2.6666666666666665) 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 10:40:13,682 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 10:40:13,682 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 10:40:13,683 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 10:40:14,999 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 10:40:14,999 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 10:40:14,999 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 10:40:15,000 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-07-01 10:40:15,000 INFO  L430      AbstractCegarLoop]: === Iteration 4 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]===
[2021-07-01 10:40:15,001 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-01 10:40:15,001 INFO  L82        PathProgramCache]: Analyzing trace with hash 1989672393, now seen corresponding path program 1 times
[2021-07-01 10:40:15,001 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-01 10:40:15,001 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005881634]
[2021-07-01 10:40:15,001 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-01 10:40:15,030 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 10:40:15,109 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2021-07-01 10:40:15,110 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-01 10:40:15,110 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005881634]
[2021-07-01 10:40:15,110 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005881634] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 10:40:15,111 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870340629]
[2021-07-01 10:40:15,113 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 10:40:15,206 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 10:40:15,207 INFO  L263         TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 29 conjunts are in the unsatisfiable core
[2021-07-01 10:40:15,210 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-07-01 10:40:15,429 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2021-07-01 10:40:15,430 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleZ3 [870340629] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 10:40:15,430 INFO  L226   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-07-01 10:40:15,430 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10
[2021-07-01 10:40:15,430 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885336225]
[2021-07-01 10:40:15,430 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 11 states
[2021-07-01 10:40:15,430 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-01 10:40:15,430 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2021-07-01 10:40:15,431 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110
[2021-07-01 10:40:15,431 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 10:40:15,431 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-01 10:40:15,431 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 10 states have internal predecessors, (68), 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 10:40:15,431 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 10:40:15,431 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 10:40:15,431 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 10:40:15,431 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 10:40:16,404 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 10:40:16,405 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 10:40:16,405 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 10:40:16,405 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2021-07-01 10:40:16,620 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-07-01 10:40:16,621 INFO  L430      AbstractCegarLoop]: === Iteration 5 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]===
[2021-07-01 10:40:16,621 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-01 10:40:16,621 INFO  L82        PathProgramCache]: Analyzing trace with hash -351762063, now seen corresponding path program 1 times
[2021-07-01 10:40:16,621 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-01 10:40:16,621 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155947337]
[2021-07-01 10:40:16,621 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-01 10:40:16,633 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 10:40:16,738 INFO  L134       CoverageAnalysis]: Checked inductivity of 34 backedges. 16 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked.
[2021-07-01 10:40:16,738 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-01 10:40:16,739 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155947337]
[2021-07-01 10:40:16,739 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155947337] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 10:40:16,739 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735135609]
[2021-07-01 10:40:16,739 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 10:40:16,856 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 10:40:16,858 INFO  L263         TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 49 conjunts are in the unsatisfiable core
[2021-07-01 10:40:16,859 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-07-01 10:40:17,230 INFO  L134       CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 17 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked.
[2021-07-01 10:40:17,230 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735135609] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 10:40:17,231 INFO  L226   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-07-01 10:40:17,231 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12
[2021-07-01 10:40:17,231 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325589920]
[2021-07-01 10:40:17,231 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 13 states
[2021-07-01 10:40:17,231 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-01 10:40:17,231 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2021-07-01 10:40:17,232 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156
[2021-07-01 10:40:17,233 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 10:40:17,233 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-01 10:40:17,233 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 12 states have internal predecessors, (83), 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 10:40:17,233 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 10:40:17,233 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 10:40:17,233 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 10:40:17,233 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. 
[2021-07-01 10:40:17,233 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 10:40:18,504 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 10:40:18,505 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 10:40:18,505 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 10:40:18,505 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2021-07-01 10:40:18,505 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2021-07-01 10:40:18,720 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-07-01 10:40:18,721 INFO  L430      AbstractCegarLoop]: === Iteration 6 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]===
[2021-07-01 10:40:18,721 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-01 10:40:18,721 INFO  L82        PathProgramCache]: Analyzing trace with hash -1915688468, now seen corresponding path program 1 times
[2021-07-01 10:40:18,721 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-01 10:40:18,721 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576903622]
[2021-07-01 10:40:18,721 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-01 10:40:18,754 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 10:40:18,851 INFO  L134       CoverageAnalysis]: Checked inductivity of 43 backedges. 21 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked.
[2021-07-01 10:40:18,851 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-01 10:40:18,851 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576903622]
[2021-07-01 10:40:18,851 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576903622] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 10:40:18,852 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562579436]
[2021-07-01 10:40:18,852 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 10:40:18,888 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 10:40:18,890 WARN  L261         TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 64 conjunts are in the unsatisfiable core
[2021-07-01 10:40:18,891 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-07-01 10:40:19,066 INFO  L134       CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked.
[2021-07-01 10:40:19,066 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562579436] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 10:40:19,066 INFO  L226   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-07-01 10:40:19,066 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14
[2021-07-01 10:40:19,066 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670258960]
[2021-07-01 10:40:19,067 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 15 states
[2021-07-01 10:40:19,067 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-01 10:40:19,068 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2021-07-01 10:40:19,068 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210
[2021-07-01 10:40:19,068 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 10:40:19,068 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-01 10:40:19,068 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 15 states, 15 states have (on average 6.333333333333333) internal successors, (95), 14 states have internal predecessors, (95), 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 10:40:19,068 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 10:40:19,068 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 10:40:19,068 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 10:40:19,068 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. 
[2021-07-01 10:40:19,068 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. 
[2021-07-01 10:40:19,068 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 10:40:21,373 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 10:40:21,373 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 10:40:21,373 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 10:40:21,373 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2021-07-01 10:40:21,374 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2021-07-01 10:40:21,374 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2021-07-01 10:40:21,592 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5
[2021-07-01 10:40:21,592 INFO  L430      AbstractCegarLoop]: === Iteration 7 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]===
[2021-07-01 10:40:21,592 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-01 10:40:21,592 INFO  L82        PathProgramCache]: Analyzing trace with hash -2042278519, now seen corresponding path program 1 times
[2021-07-01 10:40:21,592 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-01 10:40:21,592 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871305333]
[2021-07-01 10:40:21,592 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-01 10:40:21,611 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 10:40:21,823 INFO  L134       CoverageAnalysis]: Checked inductivity of 123 backedges. 66 proven. 30 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked.
[2021-07-01 10:40:21,824 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-01 10:40:21,824 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871305333]
[2021-07-01 10:40:21,825 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871305333] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 10:40:21,825 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565624614]
[2021-07-01 10:40:21,825 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 10:40:21,914 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 10:40:21,917 WARN  L261         TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 119 conjunts are in the unsatisfiable core
[2021-07-01 10:40:21,919 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-07-01 10:40:22,171 INFO  L134       CoverageAnalysis]: Checked inductivity of 123 backedges. 6 proven. 90 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked.
[2021-07-01 10:40:22,171 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleZ3 [565624614] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 10:40:22,172 INFO  L226   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-07-01 10:40:22,172 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16
[2021-07-01 10:40:22,172 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505829467]
[2021-07-01 10:40:22,173 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 17 states
[2021-07-01 10:40:22,173 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-01 10:40:22,173 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2021-07-01 10:40:22,173 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272
[2021-07-01 10:40:22,173 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 10:40:22,173 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-01 10:40:22,174 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 17 states, 17 states have (on average 7.117647058823529) internal successors, (121), 16 states have internal predecessors, (121), 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 10:40:22,174 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 10:40:22,174 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 10:40:22,174 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 10:40:22,174 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. 
[2021-07-01 10:40:22,174 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. 
[2021-07-01 10:40:22,177 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. 
[2021-07-01 10:40:22,177 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 10:40:28,036 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 10:40:28,036 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 10:40:28,037 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 10:40:28,037 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2021-07-01 10:40:28,037 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2021-07-01 10:40:28,037 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2021-07-01 10:40:28,037 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2021-07-01 10:40:28,237 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-07-01 10:40:28,237 INFO  L430      AbstractCegarLoop]: === Iteration 8 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]===
[2021-07-01 10:40:28,238 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-01 10:40:28,238 INFO  L82        PathProgramCache]: Analyzing trace with hash -1732118084, now seen corresponding path program 1 times
[2021-07-01 10:40:28,238 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-01 10:40:28,238 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132686344]
[2021-07-01 10:40:28,238 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-01 10:40:28,260 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 10:40:28,428 INFO  L134       CoverageAnalysis]: Checked inductivity of 122 backedges. 72 proven. 29 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked.
[2021-07-01 10:40:28,428 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-01 10:40:28,428 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132686344]
[2021-07-01 10:40:28,428 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132686344] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 10:40:28,428 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9762541]
[2021-07-01 10:40:28,428 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 10:40:28,471 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 10:40:28,473 WARN  L261         TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 134 conjunts are in the unsatisfiable core
[2021-07-01 10:40:28,474 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-07-01 10:40:28,757 INFO  L134       CoverageAnalysis]: Checked inductivity of 122 backedges. 5 proven. 96 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked.
[2021-07-01 10:40:28,757 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleZ3 [9762541] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 10:40:28,757 INFO  L226   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-07-01 10:40:28,758 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18
[2021-07-01 10:40:28,758 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596859534]
[2021-07-01 10:40:28,758 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 19 states
[2021-07-01 10:40:28,758 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-01 10:40:28,758 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2021-07-01 10:40:28,758 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342
[2021-07-01 10:40:28,759 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 10:40:28,759 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-01 10:40:28,759 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 19 states, 19 states have (on average 7.052631578947368) internal successors, (134), 18 states have internal predecessors, (134), 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 10:40:28,759 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 10:40:28,759 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 10:40:28,759 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 10:40:28,759 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. 
[2021-07-01 10:40:28,759 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. 
[2021-07-01 10:40:28,759 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. 
[2021-07-01 10:40:28,759 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. 
[2021-07-01 10:40:28,759 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 10:40:56,466 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 10:40:56,466 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 10:40:56,466 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 10:40:56,466 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2021-07-01 10:40:56,466 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2021-07-01 10:40:56,466 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2021-07-01 10:40:56,466 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2021-07-01 10:40:56,467 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. 
[2021-07-01 10:40:56,667 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-07-01 10:40:56,667 INFO  L430      AbstractCegarLoop]: === Iteration 9 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]===
[2021-07-01 10:40:56,668 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-01 10:40:56,668 INFO  L82        PathProgramCache]: Analyzing trace with hash 394619084, now seen corresponding path program 1 times
[2021-07-01 10:40:56,668 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-01 10:40:56,668 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86426468]
[2021-07-01 10:40:56,668 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-01 10:40:56,723 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 10:40:56,898 INFO  L134       CoverageAnalysis]: Checked inductivity of 255 backedges. 135 proven. 79 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked.
[2021-07-01 10:40:56,899 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-01 10:40:56,899 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86426468]
[2021-07-01 10:40:56,899 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86426468] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 10:40:56,899 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530972379]
[2021-07-01 10:40:56,899 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 10:40:57,000 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 10:40:57,005 WARN  L261         TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 204 conjunts are in the unsatisfiable core
[2021-07-01 10:40:57,010 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-07-01 10:40:57,235 INFO  L134       CoverageAnalysis]: Checked inductivity of 255 backedges. 7 proven. 207 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked.
[2021-07-01 10:40:57,235 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530972379] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 10:40:57,235 INFO  L226   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-07-01 10:40:57,235 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20
[2021-07-01 10:40:57,236 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442959247]
[2021-07-01 10:40:57,236 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 21 states
[2021-07-01 10:40:57,236 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-01 10:40:57,236 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2021-07-01 10:40:57,237 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=283, Unknown=0, NotChecked=0, Total=420
[2021-07-01 10:40:57,237 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 10:40:57,237 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-01 10:40:57,237 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 21 states, 21 states have (on average 8.047619047619047) internal successors, (169), 20 states have internal predecessors, (169), 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 10:40:57,237 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 10:40:57,237 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 10:40:57,237 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 10:40:57,237 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. 
[2021-07-01 10:40:57,237 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. 
[2021-07-01 10:40:57,237 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. 
[2021-07-01 10:40:57,237 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. 
[2021-07-01 10:40:57,237 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. 
[2021-07-01 10:40:57,237 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.