/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-NewStatesSleepPersistent-NoLbe-Lockstep.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-correct11.bpl


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


This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088
[2021-07-14 14:21:29,208 INFO  L177        SettingsManager]: Resetting all preferences to default values...
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[2021-07-14 14:21:29,249 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
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[2021-07-14 14:21:29,251 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
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[2021-07-14 14:21:29,268 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2021-07-14 14:21:29,275 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-NewStatesSleepPersistent-NoLbe-Lockstep.epf
[2021-07-14 14:21:29,296 INFO  L113        SettingsManager]: Loading preferences was successful
[2021-07-14 14:21:29,296 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2021-07-14 14:21:29,296 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-07-14 14:21:29,296 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-07-14 14:21:29,297 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-07-14 14:21:29,297 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2021-07-14 14:21:29,298 INFO  L138        SettingsManager]:  * Use SBE=true
[2021-07-14 14:21:29,298 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-07-14 14:21:29,298 INFO  L138        SettingsManager]:  * sizeof long=4
[2021-07-14 14:21:29,298 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2021-07-14 14:21:29,298 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2021-07-14 14:21:29,298 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2021-07-14 14:21:29,298 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2021-07-14 14:21:29,299 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-07-14 14:21:29,299 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2021-07-14 14:21:29,299 INFO  L138        SettingsManager]:  * sizeof long double=12
[2021-07-14 14:21:29,299 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2021-07-14 14:21:29,299 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2021-07-14 14:21:29,299 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2021-07-14 14:21:29,300 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-07-14 14:21:29,300 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2021-07-14 14:21:29,300 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2021-07-14 14:21:29,300 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2021-07-14 14:21:29,300 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-07-14 14:21:29,300 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-07-14 14:21:29,300 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2021-07-14 14:21:29,301 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-07-14 14:21:29,301 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2021-07-14 14:21:29,301 INFO  L138        SettingsManager]:  * DFS Order used in POR=PSEUDO_LOCKSTEP
[2021-07-14 14:21:29,301 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-07-14 14:21:29,301 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2021-07-14 14:21:29,301 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA
[2021-07-14 14:21:29,301 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-07-14 14:21:29,302 INFO  L138        SettingsManager]:  * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES
[2021-07-14 14:21:29,302 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2021-07-14 14:21:29,608 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2021-07-14 14:21:29,633 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-07-14 14:21:29,635 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-07-14 14:21:29,636 INFO  L271        PluginConnector]: Initializing Boogie PL CUP Parser...
[2021-07-14 14:21:29,637 INFO  L275        PluginConnector]: Boogie PL CUP Parser initialized
[2021-07-14 14:21:29,638 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-correct11.bpl
[2021-07-14 14:21:29,638 INFO  L110           BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-correct11.bpl'
[2021-07-14 14:21:29,677 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-07-14 14:21:29,678 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2021-07-14 14:21:29,679 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-07-14 14:21:29,681 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-07-14 14:21:29,681 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2021-07-14 14:21:29,691 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth-correct11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 02:21:29" (1/1) ...
[2021-07-14 14:21:29,696 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth-correct11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 02:21:29" (1/1) ...
[2021-07-14 14:21:29,713 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-07-14 14:21:29,715 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-07-14 14:21:29,715 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2021-07-14 14:21:29,715 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2021-07-14 14:21:29,721 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth-correct11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 02:21:29" (1/1) ...
[2021-07-14 14:21:29,721 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth-correct11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 02:21:29" (1/1) ...
[2021-07-14 14:21:29,722 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth-correct11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 02:21:29" (1/1) ...
[2021-07-14 14:21:29,722 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth-correct11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 02:21:29" (1/1) ...
[2021-07-14 14:21:29,723 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth-correct11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 02:21:29" (1/1) ...
[2021-07-14 14:21:29,726 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth-correct11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 02:21:29" (1/1) ...
[2021-07-14 14:21:29,726 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth-correct11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 02:21:29" (1/1) ...
[2021-07-14 14:21:29,727 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-07-14 14:21:29,728 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-07-14 14:21:29,728 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2021-07-14 14:21:29,728 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2021-07-14 14:21:29,729 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth-correct11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 02:21:29" (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
[2021-07-14 14:21:29,793 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure DeviceThreadWithAssert given in one single declaration
[2021-07-14 14:21:29,793 INFO  L130     BoogieDeclarations]: Found specification of procedure DeviceThreadWithAssert
[2021-07-14 14:21:29,793 INFO  L138     BoogieDeclarations]: Found implementation of procedure DeviceThreadWithAssert
[2021-07-14 14:21:29,793 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration
[2021-07-14 14:21:29,793 INFO  L130     BoogieDeclarations]: Found specification of procedure DeviceThread
[2021-07-14 14:21:29,793 INFO  L138     BoogieDeclarations]: Found implementation of procedure DeviceThread
[2021-07-14 14:21:29,793 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration
[2021-07-14 14:21:29,793 INFO  L130     BoogieDeclarations]: Found specification of procedure ServerThread
[2021-07-14 14:21:29,793 INFO  L138     BoogieDeclarations]: Found implementation of procedure ServerThread
[2021-07-14 14:21:29,794 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration
[2021-07-14 14:21:29,794 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-07-14 14:21:29,794 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-07-14 14:21:29,794 WARN  L209             CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement
[2021-07-14 14:21:29,988 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-07-14 14:21:29,989 INFO  L299             CfgBuilder]: Removed 12 assume(true) statements.
[2021-07-14 14:21:29,989 WARN  L327             CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadWithAssertEXIT is neither atomic block end nor error location.
[2021-07-14 14:21:29,990 WARN  L327             CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadEXIT is neither atomic block end nor error location.
[2021-07-14 14:21:29,991 INFO  L202        PluginConnector]: Adding new model bluetooth-correct11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 02:21:29 BoogieIcfgContainer
[2021-07-14 14:21:29,991 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-07-14 14:21:29,993 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-07-14 14:21:29,993 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2021-07-14 14:21:29,996 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2021-07-14 14:21:29,996 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-correct11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 02:21:29" (1/2) ...
[2021-07-14 14:21:29,997 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7380cda0 and model type bluetooth-correct11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 02:21:29, skipping insertion in model container
[2021-07-14 14:21:29,997 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-correct11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 02:21:29" (2/2) ...
[2021-07-14 14:21:29,998 INFO  L111   eAbstractionObserver]: Analyzing ICFG bluetooth-correct11.bpl
[2021-07-14 14:21:30,003 WARN  L148   ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program
[2021-07-14 14:21:30,003 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-07-14 14:21:30,004 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-07-14 14:21:30,004 INFO  L474   ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2021-07-14 14:21:30,099 INFO  L149    ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions.
[2021-07-14 14:21:30,119 INFO  L255      AbstractCegarLoop]: Starting to check reachability of 12 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
[2021-07-14 14:21:30,182 INFO  L378      AbstractCegarLoop]: Interprodecural is true
[2021-07-14 14:21:30,183 INFO  L379      AbstractCegarLoop]: Hoare is false
[2021-07-14 14:21:30,183 INFO  L380      AbstractCegarLoop]: Compute interpolants for FPandBP
[2021-07-14 14:21:30,183 INFO  L381      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2021-07-14 14:21:30,183 INFO  L382      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-07-14 14:21:30,183 INFO  L383      AbstractCegarLoop]: Difference is false
[2021-07-14 14:21:30,183 INFO  L384      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-07-14 14:21:30,183 INFO  L388      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start========
[2021-07-14 14:21:30,919 INFO  L301   ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (1/2)
[2021-07-14 14:21:30,921 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)
[2021-07-14 14:21:30,947 INFO  L378      AbstractCegarLoop]: Interprodecural is true
[2021-07-14 14:21:30,947 INFO  L379      AbstractCegarLoop]: Hoare is false
[2021-07-14 14:21:30,947 INFO  L380      AbstractCegarLoop]: Compute interpolants for FPandBP
[2021-07-14 14:21:30,948 INFO  L381      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2021-07-14 14:21:30,948 INFO  L382      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-07-14 14:21:30,948 INFO  L383      AbstractCegarLoop]: Difference is false
[2021-07-14 14:21:30,948 INFO  L384      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-07-14 14:21:30,948 INFO  L388      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadWithAssertThread1of1ForFork1========
Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000
[2021-07-14 14:21:31,299 INFO  L430      AbstractCegarLoop]: === Iteration 1 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]===
[2021-07-14 14:21:31,305 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-14 14:21:31,305 INFO  L82        PathProgramCache]: Analyzing trace with hash -481244532, now seen corresponding path program 1 times
[2021-07-14 14:21:31,312 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-14 14:21:31,312 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880671054]
[2021-07-14 14:21:31,313 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-14 14:21:31,376 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-14 14:21:31,413 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-07-14 14:21:31,414 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-14 14:21:31,414 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880671054]
[2021-07-14 14:21:31,415 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880671054] provided 1 perfect and 0 imperfect interpolant sequences
[2021-07-14 14:21:31,415 INFO  L226   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-07-14 14:21:31,415 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-07-14 14:21:31,415 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268502844]
[2021-07-14 14:21:31,421 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 3 states
[2021-07-14 14:21:31,422 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-14 14:21:31,432 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-07-14 14:21:31,434 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-07-14 14:21:31,434 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-14 14:21:31,436 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-14 14:21:31,436 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)
[2021-07-14 14:21:31,436 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-07-14 14:21:31,552 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-14 14:21:31,552 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-07-14 14:21:31,552 INFO  L430      AbstractCegarLoop]: === Iteration 2 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]===
[2021-07-14 14:21:31,561 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-14 14:21:31,561 INFO  L82        PathProgramCache]: Analyzing trace with hash 1469080361, now seen corresponding path program 1 times
[2021-07-14 14:21:31,561 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-14 14:21:31,561 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962493013]
[2021-07-14 14:21:31,562 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-14 14:21:31,577 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-14 14:21:31,610 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-07-14 14:21:31,611 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-14 14:21:31,611 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962493013]
[2021-07-14 14:21:31,611 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962493013] provided 1 perfect and 0 imperfect interpolant sequences
[2021-07-14 14:21:31,611 INFO  L226   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-07-14 14:21:31,612 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-07-14 14:21:31,612 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652468495]
[2021-07-14 14:21:31,614 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 3 states
[2021-07-14 14:21:31,614 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-14 14:21:31,614 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-07-14 14:21:31,615 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-07-14 14:21:31,615 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-14 14:21:31,615 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-14 14:21:31,615 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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)
[2021-07-14 14:21:31,615 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-14 14:21:31,615 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-07-14 14:21:33,829 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-14 14:21:33,829 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-14 14:21:33,830 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-07-14 14:21:33,830 INFO  L430      AbstractCegarLoop]: === Iteration 3 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]===
[2021-07-14 14:21:33,830 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-14 14:21:33,830 INFO  L82        PathProgramCache]: Analyzing trace with hash -1898080958, now seen corresponding path program 1 times
[2021-07-14 14:21:33,831 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-14 14:21:33,831 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634161032]
[2021-07-14 14:21:33,831 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-14 14:21:33,848 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-14 14:21:33,912 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-07-14 14:21:33,912 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-14 14:21:33,912 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634161032]
[2021-07-14 14:21:33,913 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634161032] provided 1 perfect and 0 imperfect interpolant sequences
[2021-07-14 14:21:33,913 INFO  L226   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-07-14 14:21:33,913 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2021-07-14 14:21:33,916 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476845374]
[2021-07-14 14:21:33,917 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 6 states
[2021-07-14 14:21:33,917 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-14 14:21:33,918 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-07-14 14:21:33,918 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30
[2021-07-14 14:21:33,919 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-14 14:21:33,919 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-14 14:21:33,919 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 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)
[2021-07-14 14:21:33,920 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-14 14:21:33,920 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-14 14:21:33,921 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-07-14 14:21:37,883 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-14 14:21:37,883 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-14 14:21:37,892 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-07-14 14:21:37,892 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-07-14 14:21:37,892 INFO  L430      AbstractCegarLoop]: === Iteration 4 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]===
[2021-07-14 14:21:37,893 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-14 14:21:37,893 INFO  L82        PathProgramCache]: Analyzing trace with hash -807935302, now seen corresponding path program 1 times
[2021-07-14 14:21:37,893 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-14 14:21:37,893 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201938902]
[2021-07-14 14:21:37,893 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-14 14:21:37,908 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-14 14:21:37,991 INFO  L134       CoverageAnalysis]: Checked inductivity of 27 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked.
[2021-07-14 14:21:37,992 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-14 14:21:37,992 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201938902]
[2021-07-14 14:21:37,992 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201938902] provided 1 perfect and 0 imperfect interpolant sequences
[2021-07-14 14:21:37,993 INFO  L226   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-07-14 14:21:37,995 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2021-07-14 14:21:37,995 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29537708]
[2021-07-14 14:21:37,996 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 7 states
[2021-07-14 14:21:37,996 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-14 14:21:37,996 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2021-07-14 14:21:37,997 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42
[2021-07-14 14:21:37,997 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-14 14:21:37,998 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-14 14:21:37,998 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 6 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-07-14 14:21:37,998 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-14 14:21:38,002 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-14 14:21:38,003 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2021-07-14 14:21:38,003 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-07-14 14:21:39,544 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-14 14:21:39,544 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-14 14:21:39,544 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-07-14 14:21:39,545 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2021-07-14 14:21:39,545 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2021-07-14 14:21:39,545 INFO  L430      AbstractCegarLoop]: === Iteration 5 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]===
[2021-07-14 14:21:39,545 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-14 14:21:39,545 INFO  L82        PathProgramCache]: Analyzing trace with hash 1117091666, now seen corresponding path program 1 times
[2021-07-14 14:21:39,545 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-14 14:21:39,546 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909045921]
[2021-07-14 14:21:39,546 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-14 14:21:39,580 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-14 14:21:39,776 INFO  L134       CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked.
[2021-07-14 14:21:39,776 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-14 14:21:39,776 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909045921]
[2021-07-14 14:21:39,777 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909045921] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-14 14:21:39,777 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107516967]
[2021-07-14 14:21:39,777 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
[2021-07-14 14:21:39,893 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-14 14:21:39,897 INFO  L263         TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 44 conjunts are in the unsatisfiable core
[2021-07-14 14:21:39,902 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-07-14 14:21:40,216 INFO  L134       CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked.
[2021-07-14 14:21:40,217 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107516967] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-14 14:21:40,217 INFO  L226   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-07-14 14:21:40,217 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12
[2021-07-14 14:21:40,217 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706521904]
[2021-07-14 14:21:40,217 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 13 states
[2021-07-14 14:21:40,217 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-14 14:21:40,218 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2021-07-14 14:21:40,218 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=99, Unknown=0, NotChecked=0, Total=156
[2021-07-14 14:21:40,218 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-14 14:21:40,218 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-14 14:21:40,219 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 13 states, 13 states have (on average 6.076923076923077) internal successors, (79), 12 states have internal predecessors, (79), 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)
[2021-07-14 14:21:40,219 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-14 14:21:40,219 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-14 14:21:40,219 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2021-07-14 14:21:40,219 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. 
[2021-07-14 14:21:40,219 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-07-14 14:21:43,219 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-14 14:21:43,220 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-14 14:21:43,220 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-07-14 14:21:43,220 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2021-07-14 14:21:43,233 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2021-07-14 14:21:43,433 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-07-14 14:21:43,434 INFO  L430      AbstractCegarLoop]: === Iteration 6 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]===
[2021-07-14 14:21:43,434 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-14 14:21:43,434 INFO  L82        PathProgramCache]: Analyzing trace with hash -1101347910, now seen corresponding path program 1 times
[2021-07-14 14:21:43,434 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-14 14:21:43,435 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058620274]
[2021-07-14 14:21:43,435 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-14 14:21:43,447 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-14 14:21:43,579 INFO  L134       CoverageAnalysis]: Checked inductivity of 35 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked.
[2021-07-14 14:21:43,579 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-14 14:21:43,579 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058620274]
[2021-07-14 14:21:43,580 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058620274] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-14 14:21:43,580 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273358313]
[2021-07-14 14:21:43,580 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
[2021-07-14 14:21:43,638 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-14 14:21:43,653 INFO  L263         TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 54 conjunts are in the unsatisfiable core
[2021-07-14 14:21:43,655 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-07-14 14:21:43,860 INFO  L134       CoverageAnalysis]: Checked inductivity of 35 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked.
[2021-07-14 14:21:43,862 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1273358313] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-14 14:21:43,862 INFO  L226   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-07-14 14:21:43,862 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14
[2021-07-14 14:21:43,862 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303164572]
[2021-07-14 14:21:43,863 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 15 states
[2021-07-14 14:21:43,863 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-14 14:21:43,864 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2021-07-14 14:21:43,865 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210
[2021-07-14 14:21:43,865 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-14 14:21:43,865 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-14 14:21:43,865 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 14 states have internal predecessors, (89), 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)
[2021-07-14 14:21:43,866 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-14 14:21:43,866 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-14 14:21:43,866 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2021-07-14 14:21:43,866 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. 
[2021-07-14 14:21:43,866 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. 
[2021-07-14 14:21:43,866 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-07-14 14:21:47,947 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-14 14:21:47,948 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-14 14:21:47,948 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-07-14 14:21:47,948 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2021-07-14 14:21:47,949 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2021-07-14 14:21:47,949 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2021-07-14 14:21:48,157 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-07-14 14:21:48,158 INFO  L430      AbstractCegarLoop]: === Iteration 7 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]===
[2021-07-14 14:21:48,158 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-14 14:21:48,158 INFO  L82        PathProgramCache]: Analyzing trace with hash 1758297826, now seen corresponding path program 1 times
[2021-07-14 14:21:48,158 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-14 14:21:48,158 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722138393]
[2021-07-14 14:21:48,158 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-14 14:21:48,281 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-14 14:21:48,417 INFO  L134       CoverageAnalysis]: Checked inductivity of 58 backedges. 32 proven. 12 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked.
[2021-07-14 14:21:48,417 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-14 14:21:48,417 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722138393]
[2021-07-14 14:21:48,417 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722138393] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-14 14:21:48,418 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058146589]
[2021-07-14 14:21:48,418 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
[2021-07-14 14:21:48,474 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-14 14:21:48,476 WARN  L261         TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 74 conjunts are in the unsatisfiable core
[2021-07-14 14:21:48,478 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-07-14 14:21:48,741 INFO  L134       CoverageAnalysis]: Checked inductivity of 58 backedges. 5 proven. 39 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked.
[2021-07-14 14:21:48,744 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058146589] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-14 14:21:48,744 INFO  L226   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-07-14 14:21:48,744 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16
[2021-07-14 14:21:48,744 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928553700]
[2021-07-14 14:21:48,745 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 17 states
[2021-07-14 14:21:48,745 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-14 14:21:48,745 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2021-07-14 14:21:48,746 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=179, Unknown=0, NotChecked=0, Total=272
[2021-07-14 14:21:48,746 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-14 14:21:48,746 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-14 14:21:48,746 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 17 states, 17 states have (on average 6.411764705882353) internal successors, (109), 16 states have internal predecessors, (109), 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)
[2021-07-14 14:21:48,746 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-14 14:21:48,746 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-14 14:21:48,746 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2021-07-14 14:21:48,747 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. 
[2021-07-14 14:21:48,747 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. 
[2021-07-14 14:21:48,747 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. 
[2021-07-14 14:21:48,747 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-07-14 14:21:59,695 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-14 14:21:59,695 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-14 14:21:59,695 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-07-14 14:21:59,695 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2021-07-14 14:21:59,695 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2021-07-14 14:21:59,695 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2021-07-14 14:21:59,697 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2021-07-14 14:21:59,897 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6
[2021-07-14 14:21:59,897 INFO  L430      AbstractCegarLoop]: === Iteration 8 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]===
[2021-07-14 14:21:59,898 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-14 14:21:59,898 INFO  L82        PathProgramCache]: Analyzing trace with hash 807366194, now seen corresponding path program 1 times
[2021-07-14 14:21:59,898 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-14 14:21:59,898 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763010626]
[2021-07-14 14:21:59,898 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-14 14:21:59,915 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-14 14:22:00,057 INFO  L134       CoverageAnalysis]: Checked inductivity of 74 backedges. 43 proven. 18 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked.
[2021-07-14 14:22:00,057 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-14 14:22:00,057 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763010626]
[2021-07-14 14:22:00,057 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763010626] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-14 14:22:00,057 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769076826]
[2021-07-14 14:22:00,057 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
[2021-07-14 14:22:00,105 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-14 14:22:00,107 WARN  L261         TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 94 conjunts are in the unsatisfiable core
[2021-07-14 14:22:00,110 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-07-14 14:22:00,378 INFO  L134       CoverageAnalysis]: Checked inductivity of 74 backedges. 5 proven. 56 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked.
[2021-07-14 14:22:00,379 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769076826] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-14 14:22:00,379 INFO  L226   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-07-14 14:22:00,379 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18
[2021-07-14 14:22:00,379 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088390894]
[2021-07-14 14:22:00,379 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 19 states
[2021-07-14 14:22:00,379 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-14 14:22:00,380 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2021-07-14 14:22:00,381 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342
[2021-07-14 14:22:00,381 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-14 14:22:00,381 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-14 14:22:00,381 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 19 states, 19 states have (on average 6.368421052631579) internal successors, (121), 18 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)
[2021-07-14 14:22:00,381 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-14 14:22:00,382 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-14 14:22:00,382 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2021-07-14 14:22:00,382 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. 
[2021-07-14 14:22:00,382 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. 
[2021-07-14 14:22:00,382 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. 
[2021-07-14 14:22:00,382 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. 
[2021-07-14 14:22:00,382 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-07-14 14:24:07,163 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-14 14:24:07,163 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-14 14:24:07,163 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-07-14 14:24:07,163 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2021-07-14 14:24:07,163 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2021-07-14 14:24:07,163 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. 
[2021-07-14 14:24:07,163 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. 
[2021-07-14 14:24:07,164 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. 
[2021-07-14 14:24:07,387 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-07-14 14:24:07,387 INFO  L430      AbstractCegarLoop]: === Iteration 9 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]===
[2021-07-14 14:24:07,387 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-14 14:24:07,387 INFO  L82        PathProgramCache]: Analyzing trace with hash 882291535, now seen corresponding path program 1 times
[2021-07-14 14:24:07,388 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-14 14:24:07,388 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162862282]
[2021-07-14 14:24:07,388 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-14 14:24:07,409 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-14 14:24:07,594 INFO  L134       CoverageAnalysis]: Checked inductivity of 83 backedges. 49 proven. 19 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2021-07-14 14:24:07,594 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-14 14:24:07,594 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162862282]
[2021-07-14 14:24:07,595 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162862282] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-14 14:24:07,595 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181570728]
[2021-07-14 14:24:07,595 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
[2021-07-14 14:24:07,657 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-14 14:24:07,659 WARN  L261         TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 109 conjunts are in the unsatisfiable core
[2021-07-14 14:24:07,663 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-07-14 14:24:07,902 INFO  L134       CoverageAnalysis]: Checked inductivity of 83 backedges. 5 proven. 63 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2021-07-14 14:24:07,903 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleZ3 [181570728] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-14 14:24:07,903 INFO  L226   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-07-14 14:24:07,903 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20
[2021-07-14 14:24:07,903 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837127163]
[2021-07-14 14:24:07,903 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 21 states
[2021-07-14 14:24:07,903 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-14 14:24:07,904 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2021-07-14 14:24:07,904 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=283, Unknown=0, NotChecked=0, Total=420
[2021-07-14 14:24:07,904 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-14 14:24:07,904 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-14 14:24:07,904 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 21 states, 21 states have (on average 6.333333333333333) internal successors, (133), 20 states have internal predecessors, (133), 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)
[2021-07-14 14:24:07,904 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-14 14:24:07,904 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-14 14:24:07,904 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2021-07-14 14:24:07,905 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. 
[2021-07-14 14:24:07,905 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. 
[2021-07-14 14:24:07,905 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. 
[2021-07-14 14:24:07,905 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 15 states. 
[2021-07-14 14:24:07,905 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. 
[2021-07-14 14:24:07,905 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.