/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-customized07.bpl


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


This is Ultimate 0.2.1-1c3aa5735269c4be989a50fc1da9ea7b9492ef29-1c3aa57
[2021-07-01 10:32:32,422 INFO  L177        SettingsManager]: Resetting all preferences to default values...
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[2021-07-01 10:32:32,449 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2021-07-01 10:32:32,450 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2021-07-01 10:32:32,450 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
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[2021-07-01 10:32:32,452 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2021-07-01 10:32:32,453 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
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[2021-07-01 10:32:32,460 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
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[2021-07-01 10:32:32,466 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2021-07-01 10:32:32,471 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 10:32:32,493 INFO  L113        SettingsManager]: Loading preferences was successful
[2021-07-01 10:32:32,493 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2021-07-01 10:32:32,494 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-07-01 10:32:32,494 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-07-01 10:32:32,495 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-07-01 10:32:32,495 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2021-07-01 10:32:32,495 INFO  L138        SettingsManager]:  * Use SBE=true
[2021-07-01 10:32:32,495 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-07-01 10:32:32,495 INFO  L138        SettingsManager]:  * sizeof long=4
[2021-07-01 10:32:32,495 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2021-07-01 10:32:32,495 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2021-07-01 10:32:32,496 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2021-07-01 10:32:32,496 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2021-07-01 10:32:32,496 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-07-01 10:32:32,496 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2021-07-01 10:32:32,496 INFO  L138        SettingsManager]:  * sizeof long double=12
[2021-07-01 10:32:32,496 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2021-07-01 10:32:32,496 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2021-07-01 10:32:32,496 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2021-07-01 10:32:32,497 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-07-01 10:32:32,497 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2021-07-01 10:32:32,497 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2021-07-01 10:32:32,497 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2021-07-01 10:32:32,497 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-07-01 10:32:32,497 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-07-01 10:32:32,497 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2021-07-01 10:32:32,498 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-07-01 10:32:32,498 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2021-07-01 10:32:32,498 INFO  L138        SettingsManager]:  * DFS Order used in POR=PSEUDO_LOCKSTEP
[2021-07-01 10:32:32,498 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-07-01 10:32:32,498 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2021-07-01 10:32:32,498 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA
[2021-07-01 10:32:32,498 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-07-01 10:32:32,498 INFO  L138        SettingsManager]:  * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET
[2021-07-01 10:32:32,499 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2021-07-01 10:32:32,723 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2021-07-01 10:32:32,737 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-07-01 10:32:32,739 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-07-01 10:32:32,739 INFO  L271        PluginConnector]: Initializing Boogie PL CUP Parser...
[2021-07-01 10:32:32,740 INFO  L275        PluginConnector]: Boogie PL CUP Parser initialized
[2021-07-01 10:32:32,741 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-customized07.bpl
[2021-07-01 10:32:32,741 INFO  L110           BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-customized07.bpl'
[2021-07-01 10:32:32,756 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-07-01 10:32:32,758 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2021-07-01 10:32:32,758 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-07-01 10:32:32,758 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-07-01 10:32:32,759 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2021-07-01 10:32:32,767 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth-customized07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:32:32" (1/1) ...
[2021-07-01 10:32:32,772 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth-customized07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:32:32" (1/1) ...
[2021-07-01 10:32:32,782 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-07-01 10:32:32,783 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-07-01 10:32:32,783 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2021-07-01 10:32:32,784 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2021-07-01 10:32:32,789 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth-customized07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:32:32" (1/1) ...
[2021-07-01 10:32:32,789 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth-customized07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:32:32" (1/1) ...
[2021-07-01 10:32:32,789 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth-customized07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:32:32" (1/1) ...
[2021-07-01 10:32:32,789 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth-customized07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:32:32" (1/1) ...
[2021-07-01 10:32:32,791 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth-customized07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:32:32" (1/1) ...
[2021-07-01 10:32:32,793 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth-customized07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:32:32" (1/1) ...
[2021-07-01 10:32:32,794 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth-customized07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:32:32" (1/1) ...
[2021-07-01 10:32:32,796 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-07-01 10:32:32,797 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-07-01 10:32:32,797 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2021-07-01 10:32:32,797 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2021-07-01 10:32:32,798 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth-customized07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:32:32" (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 10:32:32,856 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure DeviceThreadWithAssert given in one single declaration
[2021-07-01 10:32:32,857 INFO  L130     BoogieDeclarations]: Found specification of procedure DeviceThreadWithAssert
[2021-07-01 10:32:32,857 INFO  L138     BoogieDeclarations]: Found implementation of procedure DeviceThreadWithAssert
[2021-07-01 10:32:32,857 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration
[2021-07-01 10:32:32,857 INFO  L130     BoogieDeclarations]: Found specification of procedure DeviceThread
[2021-07-01 10:32:32,857 INFO  L138     BoogieDeclarations]: Found implementation of procedure DeviceThread
[2021-07-01 10:32:32,857 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration
[2021-07-01 10:32:32,857 INFO  L130     BoogieDeclarations]: Found specification of procedure ServerThread
[2021-07-01 10:32:32,858 INFO  L138     BoogieDeclarations]: Found implementation of procedure ServerThread
[2021-07-01 10:32:32,859 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration
[2021-07-01 10:32:32,859 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-07-01 10:32:32,859 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-07-01 10:32:32,859 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 10:32:33,093 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-07-01 10:32:33,093 INFO  L299             CfgBuilder]: Removed 12 assume(true) statements.
[2021-07-01 10:32:33,094 WARN  L327             CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadWithAssertEXIT is neither atomic block end nor error location.
[2021-07-01 10:32:33,094 WARN  L327             CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadEXIT is neither atomic block end nor error location.
[2021-07-01 10:32:33,095 INFO  L202        PluginConnector]: Adding new model bluetooth-customized07.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:32:33 BoogieIcfgContainer
[2021-07-01 10:32:33,095 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-07-01 10:32:33,096 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-07-01 10:32:33,096 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2021-07-01 10:32:33,098 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2021-07-01 10:32:33,098 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-customized07.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 10:32:32" (1/2) ...
[2021-07-01 10:32:33,099 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6864d9a5 and model type bluetooth-customized07.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 10:32:33, skipping insertion in model container
[2021-07-01 10:32:33,099 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-customized07.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 10:32:33" (2/2) ...
[2021-07-01 10:32:33,100 INFO  L111   eAbstractionObserver]: Analyzing ICFG bluetooth-customized07.bpl
[2021-07-01 10:32:33,103 WARN  L148   ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program
[2021-07-01 10:32:33,104 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-07-01 10:32:33,104 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-07-01 10:32:33,104 INFO  L474   ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2021-07-01 10:32:33,175 INFO  L149    ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions.
[2021-07-01 10:32:33,191 INFO  L255      AbstractCegarLoop]: Starting to check reachability of 8 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 10:32:33,238 INFO  L378      AbstractCegarLoop]: Interprodecural is true
[2021-07-01 10:32:33,238 INFO  L379      AbstractCegarLoop]: Hoare is false
[2021-07-01 10:32:33,238 INFO  L380      AbstractCegarLoop]: Compute interpolants for FPandBP
[2021-07-01 10:32:33,238 INFO  L381      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2021-07-01 10:32:33,238 INFO  L382      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-07-01 10:32:33,239 INFO  L383      AbstractCegarLoop]: Difference is false
[2021-07-01 10:32:33,239 INFO  L384      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-07-01 10:32:33,239 INFO  L388      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start========
[2021-07-01 10:32:35,570 INFO  L301   ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (1/2)
[2021-07-01 10:32:35,571 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 10:32:35,585 INFO  L378      AbstractCegarLoop]: Interprodecural is true
[2021-07-01 10:32:35,585 INFO  L379      AbstractCegarLoop]: Hoare is false
[2021-07-01 10:32:35,585 INFO  L380      AbstractCegarLoop]: Compute interpolants for FPandBP
[2021-07-01 10:32:35,585 INFO  L381      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2021-07-01 10:32:35,585 INFO  L382      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-07-01 10:32:35,585 INFO  L383      AbstractCegarLoop]: Difference is false
[2021-07-01 10:32:35,585 INFO  L384      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-07-01 10:32:35,585 INFO  L388      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == DeviceThreadWithAssertThread1of1ForFork1========
[2021-07-01 10:32:35,628 INFO  L430      AbstractCegarLoop]: === Iteration 1 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]===
[2021-07-01 10:32:35,631 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-01 10:32:35,632 INFO  L82        PathProgramCache]: Analyzing trace with hash 1726200253, now seen corresponding path program 1 times
[2021-07-01 10:32:35,637 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-01 10:32:35,637 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020460578]
[2021-07-01 10:32:35,638 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-01 10:32:35,685 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 10:32:35,714 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 10:32:35,714 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-01 10:32:35,715 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020460578]
[2021-07-01 10:32:35,715 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020460578] provided 1 perfect and 0 imperfect interpolant sequences
[2021-07-01 10:32:35,715 INFO  L226   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-07-01 10:32:35,715 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-07-01 10:32:35,716 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771734651]
[2021-07-01 10:32:35,719 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 3 states
[2021-07-01 10:32:35,719 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-01 10:32:35,726 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-07-01 10:32:35,727 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-07-01 10:32:35,727 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 10:32:35,728 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-01 10:32:35,728 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 10:32:35,729 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 10:32:35,841 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 10:32:35,841 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-07-01 10:32:35,842 INFO  L430      AbstractCegarLoop]: === Iteration 2 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]===
[2021-07-01 10:32:35,847 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-01 10:32:35,847 INFO  L82        PathProgramCache]: Analyzing trace with hash 2133900617, now seen corresponding path program 1 times
[2021-07-01 10:32:35,847 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-01 10:32:35,848 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404060318]
[2021-07-01 10:32:35,848 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-01 10:32:35,855 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 10:32:35,876 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 10:32:35,877 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-01 10:32:35,877 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404060318]
[2021-07-01 10:32:35,877 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404060318] provided 1 perfect and 0 imperfect interpolant sequences
[2021-07-01 10:32:35,877 INFO  L226   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-07-01 10:32:35,878 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-07-01 10:32:35,878 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223845799]
[2021-07-01 10:32:35,879 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 4 states
[2021-07-01 10:32:35,879 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-01 10:32:35,880 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-07-01 10:32:35,880 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-07-01 10:32:35,880 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 10:32:35,880 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-01 10:32:35,880 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 4 states, 3 states have (on average 2.6666666666666665) 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 10:32:35,880 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 10:32:35,880 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 10:32:36,142 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 10:32:36,142 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2021-07-01 10:32:36,143 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-07-01 10:32:36,143 INFO  L430      AbstractCegarLoop]: === Iteration 3 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]===
[2021-07-01 10:32:36,143 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-01 10:32:36,143 INFO  L82        PathProgramCache]: Analyzing trace with hash -2037171386, now seen corresponding path program 1 times
[2021-07-01 10:32:36,143 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-01 10:32:36,143 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650507682]
[2021-07-01 10:32:36,143 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-01 10:32:36,169 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 10:32:36,218 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2021-07-01 10:32:36,219 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-01 10:32:36,219 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650507682]
[2021-07-01 10:32:36,219 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650507682] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 10:32:36,219 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785389520]
[2021-07-01 10:32:36,219 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 10:32:36,262 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 10:32:36,263 INFO  L263         TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 10 conjunts are in the unsatisfiable core
[2021-07-01 10:32:36,267 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-07-01 10:32:36,472 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2021-07-01 10:32:36,472 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785389520] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 10:32:36,472 INFO  L226   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-07-01 10:32:36,472 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3
[2021-07-01 10:32:36,472 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386814797]
[2021-07-01 10:32:36,473 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 5 states
[2021-07-01 10:32:36,473 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-01 10:32:36,473 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-07-01 10:32:36,473 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20
[2021-07-01 10:32:36,473 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 10:32:36,473 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-01 10:32:36,473 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 5 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 10:32:36,474 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 10:32:36,474 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. 
[2021-07-01 10:32:36,474 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 10:32:36,762 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 10:32:36,762 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2021-07-01 10:32:36,763 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 10:32:36,976 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-07-01 10:32:36,977 INFO  L430      AbstractCegarLoop]: === Iteration 4 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]===
[2021-07-01 10:32:36,977 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-01 10:32:36,977 INFO  L82        PathProgramCache]: Analyzing trace with hash -280604493, now seen corresponding path program 1 times
[2021-07-01 10:32:36,977 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-01 10:32:36,978 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553412231]
[2021-07-01 10:32:36,978 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-01 10:32:36,985 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 10:32:37,049 INFO  L134       CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2021-07-01 10:32:37,050 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-01 10:32:37,050 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553412231]
[2021-07-01 10:32:37,050 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553412231] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 10:32:37,050 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1368866449]
[2021-07-01 10:32:37,051 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 10:32:37,081 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 10:32:37,082 INFO  L263         TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 15 conjunts are in the unsatisfiable core
[2021-07-01 10:32:37,085 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-07-01 10:32:37,162 INFO  L134       CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2021-07-01 10:32:37,163 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1368866449] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 10:32:37,163 INFO  L226   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-07-01 10:32:37,163 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4
[2021-07-01 10:32:37,163 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218860195]
[2021-07-01 10:32:37,163 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 6 states
[2021-07-01 10:32:37,163 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-01 10:32:37,164 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-07-01 10:32:37,164 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30
[2021-07-01 10:32:37,164 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 10:32:37,164 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-01 10:32:37,164 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 6 states, 5 states have (on average 6.4) internal successors, (32), 5 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-07-01 10:32:37,164 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 10:32:37,164 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. 
[2021-07-01 10:32:37,164 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 10:32:37,164 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 10:32:37,653 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 10:32:37,653 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2021-07-01 10:32:37,653 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 10:32:37,653 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2021-07-01 10:32:37,871 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-07-01 10:32:37,871 INFO  L430      AbstractCegarLoop]: === Iteration 5 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]===
[2021-07-01 10:32:37,872 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-01 10:32:37,872 INFO  L82        PathProgramCache]: Analyzing trace with hash -665717410, now seen corresponding path program 1 times
[2021-07-01 10:32:37,872 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-01 10:32:37,872 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483447434]
[2021-07-01 10:32:37,872 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-01 10:32:37,887 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 10:32:37,952 INFO  L134       CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2021-07-01 10:32:37,952 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-01 10:32:37,952 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483447434]
[2021-07-01 10:32:37,953 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483447434] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 10:32:37,953 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959568572]
[2021-07-01 10:32:37,953 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 10:32:37,989 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 10:32:37,989 INFO  L263         TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 26 conjunts are in the unsatisfiable core
[2021-07-01 10:32:37,990 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-07-01 10:32:38,114 INFO  L134       CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2021-07-01 10:32:38,114 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleZ3 [959568572] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 10:32:38,114 INFO  L226   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-07-01 10:32:38,114 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5
[2021-07-01 10:32:38,114 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325381285]
[2021-07-01 10:32:38,115 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 7 states
[2021-07-01 10:32:38,115 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-01 10:32:38,115 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2021-07-01 10:32:38,115 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42
[2021-07-01 10:32:38,115 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 10:32:38,115 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-01 10:32:38,115 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 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 10:32:38,116 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 10:32:38,116 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. 
[2021-07-01 10:32:38,116 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 10:32:38,116 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. 
[2021-07-01 10:32:38,116 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 10:32:39,759 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 10:32:39,759 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2021-07-01 10:32:39,759 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 10:32:39,759 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2021-07-01 10:32:39,760 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2021-07-01 10:32:39,976 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-07-01 10:32:39,977 INFO  L430      AbstractCegarLoop]: === Iteration 6 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]===
[2021-07-01 10:32:39,977 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-01 10:32:39,977 INFO  L82        PathProgramCache]: Analyzing trace with hash 1786264287, now seen corresponding path program 1 times
[2021-07-01 10:32:39,977 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-01 10:32:39,977 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370130374]
[2021-07-01 10:32:39,978 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-01 10:32:39,995 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 10:32:40,088 INFO  L134       CoverageAnalysis]: Checked inductivity of 109 backedges. 56 proven. 30 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked.
[2021-07-01 10:32:40,088 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-01 10:32:40,088 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370130374]
[2021-07-01 10:32:40,088 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370130374] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 10:32:40,088 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530925113]
[2021-07-01 10:32:40,088 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 10:32:40,130 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 10:32:40,131 INFO  L263         TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 48 conjunts are in the unsatisfiable core
[2021-07-01 10:32:40,134 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-07-01 10:32:40,321 INFO  L134       CoverageAnalysis]: Checked inductivity of 109 backedges. 56 proven. 30 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked.
[2021-07-01 10:32:40,321 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleZ3 [530925113] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 10:32:40,321 INFO  L226   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-07-01 10:32:40,321 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6
[2021-07-01 10:32:40,321 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559507333]
[2021-07-01 10:32:40,323 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 8 states
[2021-07-01 10:32:40,323 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-01 10:32:40,323 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2021-07-01 10:32:40,323 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56
[2021-07-01 10:32:40,323 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 10:32:40,323 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-01 10:32:40,324 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 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 10:32:40,324 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 10:32:40,324 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. 
[2021-07-01 10:32:40,324 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 10:32:40,324 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. 
[2021-07-01 10:32:40,324 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. 
[2021-07-01 10:32:40,324 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 10:32:49,722 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 10:32:49,722 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2021-07-01 10:32:49,722 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 10:32:49,723 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2021-07-01 10:32:49,723 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2021-07-01 10:32:49,724 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2021-07-01 10:32:49,936 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-07-01 10:32:49,937 INFO  L430      AbstractCegarLoop]: === Iteration 7 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]===
[2021-07-01 10:32:49,937 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-01 10:32:49,937 INFO  L82        PathProgramCache]: Analyzing trace with hash 893387301, now seen corresponding path program 1 times
[2021-07-01 10:32:49,937 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-01 10:32:49,938 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241712218]
[2021-07-01 10:32:49,938 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-01 10:32:49,976 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 10:32:50,113 INFO  L134       CoverageAnalysis]: Checked inductivity of 423 backedges. 210 proven. 108 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked.
[2021-07-01 10:32:50,113 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-01 10:32:50,113 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241712218]
[2021-07-01 10:32:50,113 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241712218] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 10:32:50,114 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104988041]
[2021-07-01 10:32:50,114 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 10:32:50,171 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 10:32:50,173 INFO  L263         TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 100 conjunts are in the unsatisfiable core
[2021-07-01 10:32:50,175 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-07-01 10:32:50,612 INFO  L134       CoverageAnalysis]: Checked inductivity of 423 backedges. 210 proven. 108 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked.
[2021-07-01 10:32:50,613 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104988041] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 10:32:50,613 INFO  L226   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-07-01 10:32:50,613 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7
[2021-07-01 10:32:50,613 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180241885]
[2021-07-01 10:32:50,613 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 9 states
[2021-07-01 10:32:50,613 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-01 10:32:50,614 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2021-07-01 10:32:50,614 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72
[2021-07-01 10:32:50,614 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 10:32:50,614 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-01 10:32:50,614 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 9 states, 8 states have (on average 8.5) internal successors, (68), 8 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 10:32:50,614 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 10:32:50,614 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. 
[2021-07-01 10:32:50,614 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 10:32:50,614 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. 
[2021-07-01 10:32:50,614 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. 
[2021-07-01 10:32:50,614 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. 
[2021-07-01 10:32:50,614 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 10:34:02,507 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 10:34:02,507 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2021-07-01 10:34:02,507 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 10:34:02,507 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2021-07-01 10:34:02,507 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2021-07-01 10:34:02,507 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2021-07-01 10:34:02,508 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2021-07-01 10:34:02,708 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-07-01 10:34:02,708 INFO  L430      AbstractCegarLoop]: === Iteration 8 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]===
[2021-07-01 10:34:02,709 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-01 10:34:02,709 INFO  L82        PathProgramCache]: Analyzing trace with hash 1874470724, now seen corresponding path program 1 times
[2021-07-01 10:34:02,709 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-01 10:34:02,709 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863622272]
[2021-07-01 10:34:02,709 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-01 10:34:02,733 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 10:34:02,838 INFO  L134       CoverageAnalysis]: Checked inductivity of 200 backedges. 108 proven. 55 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked.
[2021-07-01 10:34:02,838 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-01 10:34:02,838 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863622272]
[2021-07-01 10:34:02,838 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863622272] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 10:34:02,838 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207358786]
[2021-07-01 10:34:02,838 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 10:34:02,883 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 10:34:02,884 INFO  L263         TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 76 conjunts are in the unsatisfiable core
[2021-07-01 10:34:02,886 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-07-01 10:34:03,127 INFO  L134       CoverageAnalysis]: Checked inductivity of 200 backedges. 108 proven. 55 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked.
[2021-07-01 10:34:03,127 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207358786] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 10:34:03,127 INFO  L226   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-07-01 10:34:03,127 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2021-07-01 10:34:03,127 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365572426]
[2021-07-01 10:34:03,127 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 10 states
[2021-07-01 10:34:03,127 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-01 10:34:03,128 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2021-07-01 10:34:03,128 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90
[2021-07-01 10:34:03,128 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 10:34:03,128 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-01 10:34:03,128 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 9 states have internal predecessors, (70), 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 10:34:03,128 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 10:34:03,128 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. 
[2021-07-01 10:34:03,128 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 10:34:03,128 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. 
[2021-07-01 10:34:03,128 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. 
[2021-07-01 10:34:03,129 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. 
[2021-07-01 10:34:03,129 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. 
[2021-07-01 10:34:03,129 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.