/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-Persistent-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-customized09.bpl


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


This is Ultimate 0.2.1-1c3aa5735269c4be989a50fc1da9ea7b9492ef29-1c3aa57
[2021-07-01 12:18:28,039 INFO  L177        SettingsManager]: Resetting all preferences to default values...
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[2021-07-01 12:18:28,105 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
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[2021-07-01 12:18:28,107 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
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[2021-07-01 12:18:28,121 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2021-07-01 12:18:28,122 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2021-07-01 12:18:28,123 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-Persistent-NoLbe.epf
[2021-07-01 12:18:28,147 INFO  L113        SettingsManager]: Loading preferences was successful
[2021-07-01 12:18:28,148 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2021-07-01 12:18:28,148 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-07-01 12:18:28,148 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-07-01 12:18:28,149 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-07-01 12:18:28,149 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2021-07-01 12:18:28,149 INFO  L138        SettingsManager]:  * Use SBE=true
[2021-07-01 12:18:28,150 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-07-01 12:18:28,150 INFO  L138        SettingsManager]:  * sizeof long=4
[2021-07-01 12:18:28,150 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2021-07-01 12:18:28,150 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2021-07-01 12:18:28,150 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2021-07-01 12:18:28,150 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2021-07-01 12:18:28,150 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-07-01 12:18:28,150 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2021-07-01 12:18:28,151 INFO  L138        SettingsManager]:  * sizeof long double=12
[2021-07-01 12:18:28,151 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2021-07-01 12:18:28,151 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2021-07-01 12:18:28,151 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2021-07-01 12:18:28,151 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-07-01 12:18:28,151 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2021-07-01 12:18:28,151 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2021-07-01 12:18:28,152 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2021-07-01 12:18:28,152 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-07-01 12:18:28,152 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-07-01 12:18:28,152 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2021-07-01 12:18:28,152 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-07-01 12:18:28,154 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2021-07-01 12:18:28,154 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-07-01 12:18:28,154 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2021-07-01 12:18:28,154 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA
[2021-07-01 12:18:28,155 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-07-01 12:18:28,155 INFO  L138        SettingsManager]:  * Partial Order Reduction in concurrent analysis=PERSISTENT_SETS
[2021-07-01 12:18:28,155 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2021-07-01 12:18:28,475 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2021-07-01 12:18:28,492 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-07-01 12:18:28,494 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-07-01 12:18:28,495 INFO  L271        PluginConnector]: Initializing Boogie PL CUP Parser...
[2021-07-01 12:18:28,496 INFO  L275        PluginConnector]: Boogie PL CUP Parser initialized
[2021-07-01 12:18:28,497 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-customized09.bpl
[2021-07-01 12:18:28,497 INFO  L110           BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-customized09.bpl'
[2021-07-01 12:18:28,531 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-07-01 12:18:28,533 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2021-07-01 12:18:28,534 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-07-01 12:18:28,534 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-07-01 12:18:28,534 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2021-07-01 12:18:28,546 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth-customized09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 12:18:28" (1/1) ...
[2021-07-01 12:18:28,552 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth-customized09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 12:18:28" (1/1) ...
[2021-07-01 12:18:28,570 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-07-01 12:18:28,572 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-07-01 12:18:28,573 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2021-07-01 12:18:28,573 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2021-07-01 12:18:28,580 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth-customized09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 12:18:28" (1/1) ...
[2021-07-01 12:18:28,580 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth-customized09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 12:18:28" (1/1) ...
[2021-07-01 12:18:28,581 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth-customized09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 12:18:28" (1/1) ...
[2021-07-01 12:18:28,581 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth-customized09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 12:18:28" (1/1) ...
[2021-07-01 12:18:28,584 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth-customized09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 12:18:28" (1/1) ...
[2021-07-01 12:18:28,587 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth-customized09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 12:18:28" (1/1) ...
[2021-07-01 12:18:28,588 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth-customized09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 12:18:28" (1/1) ...
[2021-07-01 12:18:28,589 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-07-01 12:18:28,592 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-07-01 12:18:28,592 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2021-07-01 12:18:28,592 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2021-07-01 12:18:28,597 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth-customized09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 12:18:28" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-07-01 12:18:28,657 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure DeviceThreadWithAssert given in one single declaration
[2021-07-01 12:18:28,657 INFO  L130     BoogieDeclarations]: Found specification of procedure DeviceThreadWithAssert
[2021-07-01 12:18:28,657 INFO  L138     BoogieDeclarations]: Found implementation of procedure DeviceThreadWithAssert
[2021-07-01 12:18:28,658 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration
[2021-07-01 12:18:28,658 INFO  L130     BoogieDeclarations]: Found specification of procedure DeviceThread
[2021-07-01 12:18:28,658 INFO  L138     BoogieDeclarations]: Found implementation of procedure DeviceThread
[2021-07-01 12:18:28,658 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration
[2021-07-01 12:18:28,658 INFO  L130     BoogieDeclarations]: Found specification of procedure ServerThread
[2021-07-01 12:18:28,659 INFO  L138     BoogieDeclarations]: Found implementation of procedure ServerThread
[2021-07-01 12:18:28,660 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration
[2021-07-01 12:18:28,660 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-07-01 12:18:28,660 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-07-01 12:18:28,661 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 12:18:28,844 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-07-01 12:18:28,844 INFO  L299             CfgBuilder]: Removed 12 assume(true) statements.
[2021-07-01 12:18:28,845 WARN  L327             CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadWithAssertEXIT is neither atomic block end nor error location.
[2021-07-01 12:18:28,845 WARN  L327             CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadEXIT is neither atomic block end nor error location.
[2021-07-01 12:18:28,847 INFO  L202        PluginConnector]: Adding new model bluetooth-customized09.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:18:28 BoogieIcfgContainer
[2021-07-01 12:18:28,847 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-07-01 12:18:28,848 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-07-01 12:18:28,849 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2021-07-01 12:18:28,851 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2021-07-01 12:18:28,851 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-customized09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 12:18:28" (1/2) ...
[2021-07-01 12:18:28,852 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b8ebd02 and model type bluetooth-customized09.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 12:18:28, skipping insertion in model container
[2021-07-01 12:18:28,855 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-customized09.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 12:18:28" (2/2) ...
[2021-07-01 12:18:28,859 INFO  L111   eAbstractionObserver]: Analyzing ICFG bluetooth-customized09.bpl
[2021-07-01 12:18:28,864 WARN  L148   ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program
[2021-07-01 12:18:28,864 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-07-01 12:18:28,865 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-07-01 12:18:28,865 INFO  L474   ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2021-07-01 12:18:28,932 INFO  L149    ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions.
[2021-07-01 12:18:28,967 INFO  L255      AbstractCegarLoop]: Starting to check reachability of 10 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 12:18:29,041 INFO  L378      AbstractCegarLoop]: Interprodecural is true
[2021-07-01 12:18:29,041 INFO  L379      AbstractCegarLoop]: Hoare is false
[2021-07-01 12:18:29,042 INFO  L380      AbstractCegarLoop]: Compute interpolants for FPandBP
[2021-07-01 12:18:29,042 INFO  L381      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2021-07-01 12:18:29,043 INFO  L382      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-07-01 12:18:29,043 INFO  L383      AbstractCegarLoop]: Difference is false
[2021-07-01 12:18:29,043 INFO  L384      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-07-01 12:18:29,043 INFO  L388      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start========
[2021-07-01 12:18:29,610 INFO  L301   ceAbstractionStarter]: Result for error location ULTIMATE.start was SAFE (1/2)
[2021-07-01 12:18:29,612 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)
[2021-07-01 12:18:29,630 INFO  L378      AbstractCegarLoop]: Interprodecural is true
[2021-07-01 12:18:29,630 INFO  L379      AbstractCegarLoop]: Hoare is false
[2021-07-01 12:18:29,631 INFO  L380      AbstractCegarLoop]: Compute interpolants for FPandBP
[2021-07-01 12:18:29,631 INFO  L381      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2021-07-01 12:18:29,631 INFO  L382      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-07-01 12:18:29,631 INFO  L383      AbstractCegarLoop]: Difference is false
[2021-07-01 12:18:29,631 INFO  L384      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-07-01 12:18:29,631 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
[2021-07-01 12:18:29,902 INFO  L430      AbstractCegarLoop]: === Iteration 1 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]===
[2021-07-01 12:18:29,905 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-01 12:18:29,906 INFO  L82        PathProgramCache]: Analyzing trace with hash -1116941240, now seen corresponding path program 1 times
[2021-07-01 12:18:29,912 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-01 12:18:29,913 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997848649]
[2021-07-01 12:18:29,913 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-01 12:18:29,974 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 12:18:30,021 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 12:18:30,021 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-01 12:18:30,022 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997848649]
[2021-07-01 12:18:30,022 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997848649] provided 1 perfect and 0 imperfect interpolant sequences
[2021-07-01 12:18:30,022 INFO  L226   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-07-01 12:18:30,023 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2021-07-01 12:18:30,023 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630967184]
[2021-07-01 12:18:30,030 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 4 states
[2021-07-01 12:18:30,030 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-01 12:18:30,039 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-07-01 12:18:30,040 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2021-07-01 12:18:30,040 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 12:18:30,041 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-01 12:18:30,042 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 12:18:30,042 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 12:18:30,138 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2021-07-01 12:18:30,138 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-07-01 12:18:30,139 INFO  L430      AbstractCegarLoop]: === Iteration 2 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]===
[2021-07-01 12:18:30,139 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-01 12:18:30,139 INFO  L82        PathProgramCache]: Analyzing trace with hash 854426639, now seen corresponding path program 1 times
[2021-07-01 12:18:30,139 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-01 12:18:30,140 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467447603]
[2021-07-01 12:18:30,140 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-01 12:18:30,153 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 12:18:30,174 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-07-01 12:18:30,175 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-01 12:18:30,175 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467447603]
[2021-07-01 12:18:30,176 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467447603] provided 1 perfect and 0 imperfect interpolant sequences
[2021-07-01 12:18:30,176 INFO  L226   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-07-01 12:18:30,176 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-07-01 12:18:30,177 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255652572]
[2021-07-01 12:18:30,178 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 3 states
[2021-07-01 12:18:30,179 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-01 12:18:30,179 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-07-01 12:18:30,180 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-07-01 12:18:30,180 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 12:18:30,180 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-01 12:18:30,180 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-07-01 12:18:30,180 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. 
[2021-07-01 12:18:30,180 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 12:18:33,251 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2021-07-01 12:18:33,251 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 12:18:33,251 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-07-01 12:18:33,251 INFO  L430      AbstractCegarLoop]: === Iteration 3 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]===
[2021-07-01 12:18:33,252 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-01 12:18:33,252 INFO  L82        PathProgramCache]: Analyzing trace with hash -1994514152, now seen corresponding path program 1 times
[2021-07-01 12:18:33,252 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-01 12:18:33,253 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052012002]
[2021-07-01 12:18:33,253 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-01 12:18:33,302 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 12:18:33,409 INFO  L134       CoverageAnalysis]: Checked inductivity of 222 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked.
[2021-07-01 12:18:33,409 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-01 12:18:33,409 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052012002]
[2021-07-01 12:18:33,409 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052012002] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 12:18:33,409 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89867503]
[2021-07-01 12:18:33,410 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 12:18:33,475 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 12:18:33,477 INFO  L263         TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 29 conjunts are in the unsatisfiable core
[2021-07-01 12:18:33,482 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-07-01 12:18:33,767 INFO  L134       CoverageAnalysis]: Checked inductivity of 222 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked.
[2021-07-01 12:18:33,768 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleZ3 [89867503] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 12:18:33,769 INFO  L226   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-07-01 12:18:33,769 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3
[2021-07-01 12:18:33,769 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309049988]
[2021-07-01 12:18:33,770 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 5 states
[2021-07-01 12:18:33,770 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-01 12:18:33,772 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-07-01 12:18:33,804 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20
[2021-07-01 12:18:33,804 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 12:18:33,804 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-01 12:18:33,804 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 5 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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 12:18:33,804 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. 
[2021-07-01 12:18:33,804 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 12:18:33,804 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 12:18:34,010 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2021-07-01 12:18:34,010 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 12:18:34,011 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 12:18:34,225 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-07-01 12:18:34,225 INFO  L430      AbstractCegarLoop]: === Iteration 4 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]===
[2021-07-01 12:18:34,225 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-01 12:18:34,225 INFO  L82        PathProgramCache]: Analyzing trace with hash -2125132797, now seen corresponding path program 1 times
[2021-07-01 12:18:34,226 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-01 12:18:34,226 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393634676]
[2021-07-01 12:18:34,226 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-01 12:18:34,253 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 12:18:34,355 INFO  L134       CoverageAnalysis]: Checked inductivity of 349 backedges. 121 proven. 21 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked.
[2021-07-01 12:18:34,355 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-01 12:18:34,355 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393634676]
[2021-07-01 12:18:34,355 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393634676] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 12:18:34,356 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195728383]
[2021-07-01 12:18:34,356 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 12:18:34,464 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 12:18:34,466 INFO  L263         TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 39 conjunts are in the unsatisfiable core
[2021-07-01 12:18:34,469 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-07-01 12:18:34,713 INFO  L134       CoverageAnalysis]: Checked inductivity of 349 backedges. 121 proven. 21 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked.
[2021-07-01 12:18:34,713 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195728383] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 12:18:34,713 INFO  L226   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-07-01 12:18:34,714 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4
[2021-07-01 12:18:34,714 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72923992]
[2021-07-01 12:18:34,715 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 6 states
[2021-07-01 12:18:34,715 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-01 12:18:34,715 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-07-01 12:18:34,715 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30
[2021-07-01 12:18:34,715 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 12:18:34,716 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-01 12:18:34,716 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 6 states, 5 states have (on average 7.2) internal successors, (36), 5 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-07-01 12:18:34,716 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. 
[2021-07-01 12:18:34,716 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 12:18:34,716 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 12:18:34,716 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 12:18:35,319 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2021-07-01 12:18:35,320 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 12:18:35,320 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 12:18:35,320 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2021-07-01 12:18:35,536 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-07-01 12:18:35,537 INFO  L430      AbstractCegarLoop]: === Iteration 5 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]===
[2021-07-01 12:18:35,537 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-01 12:18:35,537 INFO  L82        PathProgramCache]: Analyzing trace with hash 832322401, now seen corresponding path program 1 times
[2021-07-01 12:18:35,538 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-01 12:18:35,538 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114045798]
[2021-07-01 12:18:35,538 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-01 12:18:35,577 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 12:18:35,706 INFO  L134       CoverageAnalysis]: Checked inductivity of 837 backedges. 462 proven. 103 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked.
[2021-07-01 12:18:35,706 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-01 12:18:35,706 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114045798]
[2021-07-01 12:18:35,706 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114045798] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 12:18:35,706 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529966521]
[2021-07-01 12:18:35,706 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 12:18:35,780 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 12:18:35,782 INFO  L263         TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 67 conjunts are in the unsatisfiable core
[2021-07-01 12:18:35,785 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-07-01 12:18:36,118 INFO  L134       CoverageAnalysis]: Checked inductivity of 837 backedges. 462 proven. 103 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked.
[2021-07-01 12:18:36,119 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529966521] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 12:18:36,119 INFO  L226   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-07-01 12:18:36,119 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5
[2021-07-01 12:18:36,119 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396921098]
[2021-07-01 12:18:36,120 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 7 states
[2021-07-01 12:18:36,120 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-01 12:18:36,121 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2021-07-01 12:18:36,121 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42
[2021-07-01 12:18:36,121 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 12:18:36,121 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-01 12:18:36,121 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 7 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-07-01 12:18:36,122 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. 
[2021-07-01 12:18:36,122 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 12:18:36,122 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 12:18:36,122 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. 
[2021-07-01 12:18:36,122 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 12:18:38,758 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2021-07-01 12:18:38,758 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 12:18:38,758 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 12:18:38,758 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2021-07-01 12:18:38,759 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2021-07-01 12:18:38,962 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-07-01 12:18:38,962 INFO  L430      AbstractCegarLoop]: === Iteration 6 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]===
[2021-07-01 12:18:38,962 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-01 12:18:38,962 INFO  L82        PathProgramCache]: Analyzing trace with hash 1314814938, now seen corresponding path program 1 times
[2021-07-01 12:18:38,963 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-01 12:18:38,963 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898528868]
[2021-07-01 12:18:38,963 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-01 12:18:39,045 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 12:18:39,237 INFO  L134       CoverageAnalysis]: Checked inductivity of 3338 backedges. 1894 proven. 550 refuted. 0 times theorem prover too weak. 894 trivial. 0 not checked.
[2021-07-01 12:18:39,238 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-01 12:18:39,238 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898528868]
[2021-07-01 12:18:39,238 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898528868] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 12:18:39,238 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264992528]
[2021-07-01 12:18:39,238 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 12:18:39,331 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 12:18:39,335 INFO  L263         TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 149 conjunts are in the unsatisfiable core
[2021-07-01 12:18:39,339 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-07-01 12:18:39,983 INFO  L134       CoverageAnalysis]: Checked inductivity of 3338 backedges. 1894 proven. 550 refuted. 0 times theorem prover too weak. 894 trivial. 0 not checked.
[2021-07-01 12:18:39,983 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleZ3 [264992528] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 12:18:39,983 INFO  L226   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-07-01 12:18:39,983 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6
[2021-07-01 12:18:39,984 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560061980]
[2021-07-01 12:18:39,984 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 8 states
[2021-07-01 12:18:39,984 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-01 12:18:39,985 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2021-07-01 12:18:39,985 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56
[2021-07-01 12:18:39,985 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 12:18:39,985 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-01 12:18:39,985 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 8 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-07-01 12:18:39,985 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. 
[2021-07-01 12:18:39,985 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 12:18:39,985 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 12:18:39,986 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. 
[2021-07-01 12:18:39,986 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. 
[2021-07-01 12:18:39,986 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 12:18:54,952 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2021-07-01 12:18:54,952 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 12:18:54,952 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 12:18:54,952 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2021-07-01 12:18:54,952 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2021-07-01 12:18:54,953 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2021-07-01 12:18:55,153 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-07-01 12:18:55,154 INFO  L430      AbstractCegarLoop]: === Iteration 7 === [DeviceThreadWithAssertErr0ASSERT_VIOLATIONASSERT]===
[2021-07-01 12:18:55,154 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-01 12:18:55,154 INFO  L82        PathProgramCache]: Analyzing trace with hash -356969350, now seen corresponding path program 1 times
[2021-07-01 12:18:55,154 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-01 12:18:55,154 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734493396]
[2021-07-01 12:18:55,155 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-01 12:18:55,629 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 12:18:56,039 INFO  L134       CoverageAnalysis]: Checked inductivity of 38731 backedges. 16840 proven. 710 refuted. 0 times theorem prover too weak. 21181 trivial. 0 not checked.
[2021-07-01 12:18:56,039 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-01 12:18:56,039 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734493396]
[2021-07-01 12:18:56,039 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734493396] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 12:18:56,039 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360282671]
[2021-07-01 12:18:56,040 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 12:18:56,282 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 12:18:56,297 INFO  L263         TraceCheckSpWp]: Trace formula consists of 1542 conjuncts, 545 conjunts are in the unsatisfiable core
[2021-07-01 12:18:56,318 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-07-01 12:18:58,060 INFO  L134       CoverageAnalysis]: Checked inductivity of 38731 backedges. 17379 proven. 11166 refuted. 0 times theorem prover too weak. 10186 trivial. 0 not checked.
[2021-07-01 12:18:58,061 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleZ3 [360282671] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 12:18:58,061 INFO  L226   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-07-01 12:18:58,061 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 9
[2021-07-01 12:18:58,061 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199087745]
[2021-07-01 12:18:58,063 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 10 states
[2021-07-01 12:18:58,063 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-01 12:18:58,063 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2021-07-01 12:18:58,064 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90
[2021-07-01 12:18:58,064 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 12:18:58,065 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-01 12:18:58,065 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 10 states, 9 states have (on average 13.333333333333334) internal successors, (120), 10 states have internal predecessors, (120), 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 12:18:58,065 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. 
[2021-07-01 12:18:58,065 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 12:18:58,065 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 12:18:58,065 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. 
[2021-07-01 12:18:58,066 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. 
[2021-07-01 12:18:58,066 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. 
[2021-07-01 12:18:58,066 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.