/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-NewStatesSleep-NoLbe-Random521.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-serverassert09.bpl


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


This is Ultimate 0.2.1-1c3aa5735269c4be989a50fc1da9ea7b9492ef29-1c3aa57
[2021-07-01 11:40:59,052 INFO  L177        SettingsManager]: Resetting all preferences to default values...
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[2021-07-01 11:40:59,110 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-NewStatesSleep-NoLbe-Random521.epf
[2021-07-01 11:40:59,125 INFO  L113        SettingsManager]: Loading preferences was successful
[2021-07-01 11:40:59,126 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2021-07-01 11:40:59,126 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-07-01 11:40:59,126 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-07-01 11:40:59,127 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-07-01 11:40:59,127 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2021-07-01 11:40:59,127 INFO  L138        SettingsManager]:  * Use SBE=true
[2021-07-01 11:40:59,127 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-07-01 11:40:59,127 INFO  L138        SettingsManager]:  * sizeof long=4
[2021-07-01 11:40:59,127 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2021-07-01 11:40:59,127 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2021-07-01 11:40:59,128 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2021-07-01 11:40:59,128 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2021-07-01 11:40:59,128 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-07-01 11:40:59,128 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2021-07-01 11:40:59,128 INFO  L138        SettingsManager]:  * sizeof long double=12
[2021-07-01 11:40:59,128 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2021-07-01 11:40:59,128 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2021-07-01 11:40:59,128 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2021-07-01 11:40:59,128 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-07-01 11:40:59,128 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2021-07-01 11:40:59,129 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2021-07-01 11:40:59,129 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2021-07-01 11:40:59,129 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-07-01 11:40:59,129 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-07-01 11:40:59,129 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2021-07-01 11:40:59,129 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-07-01 11:40:59,129 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2021-07-01 11:40:59,129 INFO  L138        SettingsManager]:  * DFS Order used in POR=RANDOM
[2021-07-01 11:40:59,129 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-07-01 11:40:59,129 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2021-07-01 11:40:59,129 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA
[2021-07-01 11:40:59,130 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-07-01 11:40:59,130 INFO  L138        SettingsManager]:  * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES
[2021-07-01 11:40:59,130 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2021-07-01 11:40:59,130 INFO  L138        SettingsManager]:  * Random seed used by POR DFS order=521
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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2021-07-01 11:40:59,449 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2021-07-01 11:40:59,472 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-07-01 11:40:59,474 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-07-01 11:40:59,475 INFO  L271        PluginConnector]: Initializing Boogie PL CUP Parser...
[2021-07-01 11:40:59,475 INFO  L275        PluginConnector]: Boogie PL CUP Parser initialized
[2021-07-01 11:40:59,476 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-serverassert09.bpl
[2021-07-01 11:40:59,477 INFO  L110           BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-serverassert09.bpl'
[2021-07-01 11:40:59,501 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-07-01 11:40:59,502 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2021-07-01 11:40:59,514 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-07-01 11:40:59,514 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-07-01 11:40:59,515 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2021-07-01 11:40:59,524 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "bluetooth-serverassert09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 11:40:59" (1/1) ...
[2021-07-01 11:40:59,530 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "bluetooth-serverassert09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 11:40:59" (1/1) ...
[2021-07-01 11:40:59,542 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-07-01 11:40:59,543 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-07-01 11:40:59,544 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2021-07-01 11:40:59,544 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2021-07-01 11:40:59,549 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "bluetooth-serverassert09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 11:40:59" (1/1) ...
[2021-07-01 11:40:59,549 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "bluetooth-serverassert09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 11:40:59" (1/1) ...
[2021-07-01 11:40:59,550 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "bluetooth-serverassert09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 11:40:59" (1/1) ...
[2021-07-01 11:40:59,550 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "bluetooth-serverassert09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 11:40:59" (1/1) ...
[2021-07-01 11:40:59,553 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "bluetooth-serverassert09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 11:40:59" (1/1) ...
[2021-07-01 11:40:59,556 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "bluetooth-serverassert09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 11:40:59" (1/1) ...
[2021-07-01 11:40:59,556 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "bluetooth-serverassert09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 11:40:59" (1/1) ...
[2021-07-01 11:40:59,557 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-07-01 11:40:59,558 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-07-01 11:40:59,558 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2021-07-01 11:40:59,559 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2021-07-01 11:40:59,559 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth-serverassert09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 11:40:59" (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 11:40:59,633 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration
[2021-07-01 11:40:59,633 INFO  L130     BoogieDeclarations]: Found specification of procedure DeviceThread
[2021-07-01 11:40:59,633 INFO  L138     BoogieDeclarations]: Found implementation of procedure DeviceThread
[2021-07-01 11:40:59,633 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration
[2021-07-01 11:40:59,633 INFO  L130     BoogieDeclarations]: Found specification of procedure ServerThread
[2021-07-01 11:40:59,634 INFO  L138     BoogieDeclarations]: Found implementation of procedure ServerThread
[2021-07-01 11:40:59,634 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration
[2021-07-01 11:40:59,634 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-07-01 11:40:59,634 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-07-01 11:40:59,634 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 11:40:59,777 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-07-01 11:40:59,777 INFO  L299             CfgBuilder]: Removed 7 assume(true) statements.
[2021-07-01 11:40:59,778 WARN  L327             CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadEXIT is neither atomic block end nor error location.
[2021-07-01 11:40:59,779 INFO  L202        PluginConnector]: Adding new model bluetooth-serverassert09.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:40:59 BoogieIcfgContainer
[2021-07-01 11:40:59,779 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-07-01 11:40:59,780 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-07-01 11:40:59,780 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2021-07-01 11:40:59,782 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2021-07-01 11:40:59,782 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-serverassert09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 11:40:59" (1/2) ...
[2021-07-01 11:40:59,783 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e0615bc and model type bluetooth-serverassert09.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 11:40:59, skipping insertion in model container
[2021-07-01 11:40:59,783 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-serverassert09.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:40:59" (2/2) ...
[2021-07-01 11:40:59,784 INFO  L111   eAbstractionObserver]: Analyzing ICFG bluetooth-serverassert09.bpl
[2021-07-01 11:40:59,787 WARN  L148   ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program
[2021-07-01 11:40:59,788 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-07-01 11:40:59,788 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-07-01 11:40:59,788 INFO  L474   ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2021-07-01 11:40:59,820 INFO  L149    ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions.
[2021-07-01 11:40:59,836 INFO  L255      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000
[2021-07-01 11:40:59,868 INFO  L378      AbstractCegarLoop]: Interprodecural is true
[2021-07-01 11:40:59,868 INFO  L379      AbstractCegarLoop]: Hoare is false
[2021-07-01 11:40:59,868 INFO  L380      AbstractCegarLoop]: Compute interpolants for FPandBP
[2021-07-01 11:40:59,868 INFO  L381      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2021-07-01 11:40:59,868 INFO  L382      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-07-01 11:40:59,868 INFO  L383      AbstractCegarLoop]: Difference is false
[2021-07-01 11:40:59,869 INFO  L384      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-07-01 11:40:59,869 INFO  L388      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ServerThreadThread1of1ForFork0========
[2021-07-01 11:40:59,977 INFO  L430      AbstractCegarLoop]: === Iteration 1 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]===
[2021-07-01 11:40:59,981 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-01 11:40:59,981 INFO  L82        PathProgramCache]: Analyzing trace with hash 825320149, now seen corresponding path program 1 times
[2021-07-01 11:40:59,987 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-01 11:40:59,987 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231050500]
[2021-07-01 11:40:59,987 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-01 11:41:00,065 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 11:41:00,155 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 11:41:00,156 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-01 11:41:00,156 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231050500]
[2021-07-01 11:41:00,157 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231050500] provided 1 perfect and 0 imperfect interpolant sequences
[2021-07-01 11:41:00,157 INFO  L226   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-07-01 11:41:00,157 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2021-07-01 11:41:00,157 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317927949]
[2021-07-01 11:41:00,160 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 5 states
[2021-07-01 11:41:00,161 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-01 11:41:00,168 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-07-01 11:41:00,170 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2021-07-01 11:41:00,170 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 11:41:00,171 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-01 11:41:00,172 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 5 states, 4 states have (on average 4.5) internal successors, (18), 5 states have internal predecessors, (18), 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 11:41:00,172 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 11:41:00,269 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 11:41:00,270 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-07-01 11:41:00,270 INFO  L430      AbstractCegarLoop]: === Iteration 2 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]===
[2021-07-01 11:41:00,270 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-01 11:41:00,270 INFO  L82        PathProgramCache]: Analyzing trace with hash -1346677113, now seen corresponding path program 1 times
[2021-07-01 11:41:00,271 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-01 11:41:00,271 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408582905]
[2021-07-01 11:41:00,271 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-01 11:41:00,277 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 11:41:00,303 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 11:41:00,303 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-01 11:41:00,303 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408582905]
[2021-07-01 11:41:00,303 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408582905] provided 1 perfect and 0 imperfect interpolant sequences
[2021-07-01 11:41:00,303 INFO  L226   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-07-01 11:41:00,304 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-07-01 11:41:00,304 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384002600]
[2021-07-01 11:41:00,305 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 3 states
[2021-07-01 11:41:00,305 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-01 11:41:00,305 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-07-01 11:41:00,306 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-07-01 11:41:00,306 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 11:41:00,306 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-01 11:41:00,306 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 11:41:00,306 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 11:41:00,306 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 11:41:01,397 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 11:41:01,397 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 11:41:01,398 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-07-01 11:41:01,398 INFO  L430      AbstractCegarLoop]: === Iteration 3 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]===
[2021-07-01 11:41:01,399 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-01 11:41:01,399 INFO  L82        PathProgramCache]: Analyzing trace with hash 503890992, now seen corresponding path program 1 times
[2021-07-01 11:41:01,400 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-01 11:41:01,400 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407885800]
[2021-07-01 11:41:01,400 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-01 11:41:01,429 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 11:41:01,547 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-07-01 11:41:01,547 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-01 11:41:01,547 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407885800]
[2021-07-01 11:41:01,547 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407885800] provided 1 perfect and 0 imperfect interpolant sequences
[2021-07-01 11:41:01,547 INFO  L226   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-07-01 11:41:01,548 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2021-07-01 11:41:01,548 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815721931]
[2021-07-01 11:41:01,548 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 6 states
[2021-07-01 11:41:01,548 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-01 11:41:01,549 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-07-01 11:41:01,549 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2021-07-01 11:41:01,549 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 11:41:01,549 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-01 11:41:01,549 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 11:41:01,549 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 11:41:01,549 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 11:41:01,549 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 11:41:01,944 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 11:41:01,945 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 11:41:01,945 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2021-07-01 11:41:01,945 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-07-01 11:41:01,945 INFO  L430      AbstractCegarLoop]: === Iteration 4 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]===
[2021-07-01 11:41:01,945 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-01 11:41:01,946 INFO  L82        PathProgramCache]: Analyzing trace with hash 431897224, now seen corresponding path program 1 times
[2021-07-01 11:41:01,946 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-01 11:41:01,946 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137704314]
[2021-07-01 11:41:01,946 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-01 11:41:01,951 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 11:41:02,055 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-07-01 11:41:02,055 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-01 11:41:02,055 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137704314]
[2021-07-01 11:41:02,056 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137704314] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 11:41:02,056 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460570257]
[2021-07-01 11:41:02,056 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-07-01 11:41:02,150 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 11:41:02,159 INFO  L263         TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core
[2021-07-01 11:41:02,163 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-07-01 11:41:02,483 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-07-01 11:41:02,483 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460570257] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 11:41:02,483 INFO  L226   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-07-01 11:41:02,483 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8
[2021-07-01 11:41:02,484 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224036153]
[2021-07-01 11:41:02,484 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 10 states
[2021-07-01 11:41:02,485 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-01 11:41:02,486 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2021-07-01 11:41:02,486 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90
[2021-07-01 11:41:02,489 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 11:41:02,489 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-01 11:41:02,489 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-07-01 11:41:02,489 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 11:41:02,489 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 11:41:02,490 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. 
[2021-07-01 11:41:02,490 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 11:41:03,213 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 11:41:03,213 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 11:41:03,213 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2021-07-01 11:41:03,214 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2021-07-01 11:41:03,430 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-07-01 11:41:03,431 INFO  L430      AbstractCegarLoop]: === Iteration 5 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]===
[2021-07-01 11:41:03,431 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-01 11:41:03,431 INFO  L82        PathProgramCache]: Analyzing trace with hash 1741557425, now seen corresponding path program 1 times
[2021-07-01 11:41:03,431 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-01 11:41:03,431 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864128871]
[2021-07-01 11:41:03,432 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-01 11:41:03,448 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 11:41:03,514 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-07-01 11:41:03,515 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-01 11:41:03,515 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864128871]
[2021-07-01 11:41:03,515 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864128871] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 11:41:03,515 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1044412716]
[2021-07-01 11:41:03,515 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 11:41:03,554 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 11:41:03,555 INFO  L263         TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 17 conjunts are in the unsatisfiable core
[2021-07-01 11:41:03,556 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-07-01 11:41:03,616 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2021-07-01 11:41:03,616 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1044412716] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 11:41:03,616 INFO  L226   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-07-01 11:41:03,616 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5
[2021-07-01 11:41:03,617 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531834860]
[2021-07-01 11:41:03,617 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 7 states
[2021-07-01 11:41:03,617 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-01 11:41:03,617 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2021-07-01 11:41:03,617 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2021-07-01 11:41:03,617 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 11:41:03,617 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-01 11:41:03,618 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 7 states, 6 states have (on average 5.666666666666667) internal successors, (34), 6 states have internal predecessors, (34), 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 11:41:03,618 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 11:41:03,618 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 11:41:03,618 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. 
[2021-07-01 11:41:03,618 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. 
[2021-07-01 11:41:03,618 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 11:41:04,125 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 11:41:04,125 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 11:41:04,125 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2021-07-01 11:41:04,125 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2021-07-01 11:41:04,126 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2021-07-01 11:41:04,346 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-07-01 11:41:04,346 INFO  L430      AbstractCegarLoop]: === Iteration 6 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]===
[2021-07-01 11:41:04,347 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-01 11:41:04,347 INFO  L82        PathProgramCache]: Analyzing trace with hash 2027763811, now seen corresponding path program 1 times
[2021-07-01 11:41:04,347 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-01 11:41:04,347 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315854059]
[2021-07-01 11:41:04,347 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-01 11:41:04,354 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 11:41:04,416 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2021-07-01 11:41:04,416 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-01 11:41:04,416 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315854059]
[2021-07-01 11:41:04,417 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315854059] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 11:41:04,417 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404857379]
[2021-07-01 11:41:04,417 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 11:41:04,468 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 11:41:04,469 INFO  L263         TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 17 conjunts are in the unsatisfiable core
[2021-07-01 11:41:04,470 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-07-01 11:41:04,564 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2021-07-01 11:41:04,564 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleZ3 [404857379] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 11:41:04,564 INFO  L226   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-07-01 11:41:04,564 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9
[2021-07-01 11:41:04,564 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1009648695]
[2021-07-01 11:41:04,565 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 11 states
[2021-07-01 11:41:04,565 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-01 11:41:04,565 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2021-07-01 11:41:04,565 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110
[2021-07-01 11:41:04,565 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 11:41:04,565 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-01 11:41:04,565 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 11 states, 10 states have (on average 3.6) internal successors, (36), 10 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 11:41:04,566 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 11:41:04,566 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 11:41:04,566 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. 
[2021-07-01 11:41:04,566 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. 
[2021-07-01 11:41:04,566 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. 
[2021-07-01 11:41:04,566 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 11:41:05,163 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 11:41:05,163 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 11:41:05,163 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2021-07-01 11:41:05,163 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2021-07-01 11:41:05,163 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2021-07-01 11:41:05,163 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2021-07-01 11:41:05,383 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-07-01 11:41:05,383 INFO  L430      AbstractCegarLoop]: === Iteration 7 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]===
[2021-07-01 11:41:05,383 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-01 11:41:05,383 INFO  L82        PathProgramCache]: Analyzing trace with hash -724828372, now seen corresponding path program 1 times
[2021-07-01 11:41:05,384 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-01 11:41:05,384 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300162600]
[2021-07-01 11:41:05,384 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-01 11:41:05,391 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 11:41:05,445 INFO  L134       CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2021-07-01 11:41:05,445 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-01 11:41:05,445 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300162600]
[2021-07-01 11:41:05,445 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300162600] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 11:41:05,445 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734749235]
[2021-07-01 11:41:05,445 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 11:41:05,515 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 11:41:05,516 INFO  L263         TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 29 conjunts are in the unsatisfiable core
[2021-07-01 11:41:05,517 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-07-01 11:41:05,590 INFO  L134       CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2021-07-01 11:41:05,590 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734749235] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 11:41:05,591 INFO  L226   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-07-01 11:41:05,591 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6
[2021-07-01 11:41:05,591 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451177325]
[2021-07-01 11:41:05,591 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 8 states
[2021-07-01 11:41:05,591 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-01 11:41:05,591 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2021-07-01 11:41:05,592 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2021-07-01 11:41:05,592 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 11:41:05,592 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-01 11:41:05,592 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 8 states, 7 states have (on average 5.571428571428571) internal successors, (39), 7 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-07-01 11:41:05,592 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 11:41:05,592 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 11:41:05,592 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. 
[2021-07-01 11:41:05,592 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. 
[2021-07-01 11:41:05,592 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. 
[2021-07-01 11:41:05,592 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. 
[2021-07-01 11:41:05,592 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 11:41:07,610 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 11:41:07,611 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 11:41:07,611 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2021-07-01 11:41:07,611 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2021-07-01 11:41:07,611 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2021-07-01 11:41:07,611 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2021-07-01 11:41:07,611 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2021-07-01 11:41:07,827 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-07-01 11:41:07,828 INFO  L430      AbstractCegarLoop]: === Iteration 8 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]===
[2021-07-01 11:41:07,828 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-01 11:41:07,829 INFO  L82        PathProgramCache]: Analyzing trace with hash -1301360199, now seen corresponding path program 1 times
[2021-07-01 11:41:07,832 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-01 11:41:07,833 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333523895]
[2021-07-01 11:41:07,833 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-01 11:41:07,864 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 11:41:07,967 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2021-07-01 11:41:07,967 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-01 11:41:07,968 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333523895]
[2021-07-01 11:41:07,968 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333523895] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 11:41:07,968 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319148066]
[2021-07-01 11:41:07,968 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 11:41:08,014 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 11:41:08,015 INFO  L263         TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 29 conjunts are in the unsatisfiable core
[2021-07-01 11:41:08,016 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-07-01 11:41:08,153 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2021-07-01 11:41:08,153 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319148066] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 11:41:08,153 INFO  L226   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-07-01 11:41:08,153 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10
[2021-07-01 11:41:08,154 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700601632]
[2021-07-01 11:41:08,154 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 12 states
[2021-07-01 11:41:08,154 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-01 11:41:08,154 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2021-07-01 11:41:08,154 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=78, Unknown=0, NotChecked=0, Total=132
[2021-07-01 11:41:08,154 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 11:41:08,155 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-01 11:41:08,155 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 12 states, 11 states have (on average 4.181818181818182) internal successors, (46), 11 states have internal predecessors, (46), 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 11:41:08,155 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 11:41:08,155 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 11:41:08,155 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. 
[2021-07-01 11:41:08,155 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. 
[2021-07-01 11:41:08,155 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. 
[2021-07-01 11:41:08,155 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. 
[2021-07-01 11:41:08,155 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. 
[2021-07-01 11:41:08,155 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 11:41:09,740 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 11:41:09,740 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 11:41:09,740 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2021-07-01 11:41:09,740 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2021-07-01 11:41:09,740 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2021-07-01 11:41:09,740 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2021-07-01 11:41:09,740 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2021-07-01 11:41:09,740 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2021-07-01 11:41:09,957 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-07-01 11:41:09,958 INFO  L430      AbstractCegarLoop]: === Iteration 9 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]===
[2021-07-01 11:41:09,958 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-01 11:41:09,958 INFO  L82        PathProgramCache]: Analyzing trace with hash -534917173, now seen corresponding path program 2 times
[2021-07-01 11:41:09,958 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-01 11:41:09,958 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199337935]
[2021-07-01 11:41:09,959 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-01 11:41:09,973 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 11:41:10,071 INFO  L134       CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked.
[2021-07-01 11:41:10,072 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-01 11:41:10,072 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199337935]
[2021-07-01 11:41:10,072 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199337935] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 11:41:10,072 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791097080]
[2021-07-01 11:41:10,072 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
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 11:41:10,117 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-07-01 11:41:10,117 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2021-07-01 11:41:10,118 INFO  L263         TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 53 conjunts are in the unsatisfiable core
[2021-07-01 11:41:10,119 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-07-01 11:41:10,267 INFO  L134       CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked.
[2021-07-01 11:41:10,267 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleZ3 [791097080] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 11:41:10,267 INFO  L226   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-07-01 11:41:10,267 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7
[2021-07-01 11:41:10,267 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116963523]
[2021-07-01 11:41:10,267 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 9 states
[2021-07-01 11:41:10,268 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-01 11:41:10,268 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2021-07-01 11:41:10,268 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72
[2021-07-01 11:41:10,268 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 11:41:10,268 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-01 11:41:10,268 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 9 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 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 11:41:10,268 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 11:41:10,268 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 11:41:10,268 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. 
[2021-07-01 11:41:10,268 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. 
[2021-07-01 11:41:10,268 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. 
[2021-07-01 11:41:10,268 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. 
[2021-07-01 11:41:10,268 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. 
[2021-07-01 11:41:10,269 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. 
[2021-07-01 11:41:10,269 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 11:41:23,548 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 11:41:23,548 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 11:41:23,548 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2021-07-01 11:41:23,548 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2021-07-01 11:41:23,548 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2021-07-01 11:41:23,548 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2021-07-01 11:41:23,548 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2021-07-01 11:41:23,548 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2021-07-01 11:41:23,549 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2021-07-01 11:41:23,766 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-07-01 11:41:23,766 INFO  L430      AbstractCegarLoop]: === Iteration 10 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]===
[2021-07-01 11:41:23,766 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-01 11:41:23,766 INFO  L82        PathProgramCache]: Analyzing trace with hash 1540642349, now seen corresponding path program 1 times
[2021-07-01 11:41:23,766 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-01 11:41:23,767 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910709429]
[2021-07-01 11:41:23,767 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-01 11:41:23,796 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 11:41:23,901 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2021-07-01 11:41:23,901 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-01 11:41:23,901 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910709429]
[2021-07-01 11:41:23,901 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910709429] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 11:41:23,901 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991732063]
[2021-07-01 11:41:23,901 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 11:41:23,932 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 11:41:23,933 INFO  L263         TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 31 conjunts are in the unsatisfiable core
[2021-07-01 11:41:23,934 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-07-01 11:41:24,038 INFO  L134       CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2021-07-01 11:41:24,038 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1991732063] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 11:41:24,038 INFO  L226   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-07-01 11:41:24,038 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2021-07-01 11:41:24,038 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946177979]
[2021-07-01 11:41:24,039 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 11 states
[2021-07-01 11:41:24,039 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-01 11:41:24,039 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2021-07-01 11:41:24,039 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=56, Unknown=0, NotChecked=0, Total=110
[2021-07-01 11:41:24,039 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 11:41:24,039 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-01 11:41:24,039 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 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 11:41:24,039 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 11:41:24,039 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 11:41:24,039 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. 
[2021-07-01 11:41:24,039 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. 
[2021-07-01 11:41:24,039 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. 
[2021-07-01 11:41:24,039 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. 
[2021-07-01 11:41:24,040 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. 
[2021-07-01 11:41:24,040 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. 
[2021-07-01 11:41:24,040 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. 
[2021-07-01 11:41:24,040 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.