/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-Random7777.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 11:51:34,619 INFO  L177        SettingsManager]: Resetting all preferences to default values...
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[2021-07-01 11:51:34,696 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-Random7777.epf
[2021-07-01 11:51:34,724 INFO  L113        SettingsManager]: Loading preferences was successful
[2021-07-01 11:51:34,724 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2021-07-01 11:51:34,724 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-07-01 11:51:34,725 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-07-01 11:51:34,726 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-07-01 11:51:34,726 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2021-07-01 11:51:34,726 INFO  L138        SettingsManager]:  * Use SBE=true
[2021-07-01 11:51:34,727 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-07-01 11:51:34,727 INFO  L138        SettingsManager]:  * sizeof long=4
[2021-07-01 11:51:34,727 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2021-07-01 11:51:34,728 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2021-07-01 11:51:34,728 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2021-07-01 11:51:34,728 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2021-07-01 11:51:34,728 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-07-01 11:51:34,728 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2021-07-01 11:51:34,728 INFO  L138        SettingsManager]:  * sizeof long double=12
[2021-07-01 11:51:34,728 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2021-07-01 11:51:34,728 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2021-07-01 11:51:34,728 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2021-07-01 11:51:34,729 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-07-01 11:51:34,729 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2021-07-01 11:51:34,729 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2021-07-01 11:51:34,729 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2021-07-01 11:51:34,729 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-07-01 11:51:34,729 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-07-01 11:51:34,729 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2021-07-01 11:51:34,729 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-07-01 11:51:34,729 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2021-07-01 11:51:34,729 INFO  L138        SettingsManager]:  * DFS Order used in POR=RANDOM
[2021-07-01 11:51:34,730 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-07-01 11:51:34,730 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2021-07-01 11:51:34,730 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA
[2021-07-01 11:51:34,730 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-07-01 11:51:34,730 INFO  L138        SettingsManager]:  * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES
[2021-07-01 11:51:34,730 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2021-07-01 11:51:34,730 INFO  L138        SettingsManager]:  * Random seed used by POR DFS order=7777
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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2021-07-01 11:51:35,003 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2021-07-01 11:51:35,016 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-07-01 11:51:35,018 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-07-01 11:51:35,019 INFO  L271        PluginConnector]: Initializing Boogie PL CUP Parser...
[2021-07-01 11:51:35,019 INFO  L275        PluginConnector]: Boogie PL CUP Parser initialized
[2021-07-01 11:51:35,020 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-serverassert09.bpl
[2021-07-01 11:51:35,020 INFO  L110           BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/bluetooth-serverassert09.bpl'
[2021-07-01 11:51:35,035 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-07-01 11:51:35,037 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2021-07-01 11:51:35,038 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-07-01 11:51:35,038 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-07-01 11:51:35,038 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2021-07-01 11:51:35,046 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 11:51:35" (1/1) ...
[2021-07-01 11:51:35,050 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 11:51:35" (1/1) ...
[2021-07-01 11:51:35,059 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-07-01 11:51:35,061 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-07-01 11:51:35,061 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2021-07-01 11:51:35,061 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2021-07-01 11:51:35,065 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 11:51:35" (1/1) ...
[2021-07-01 11:51:35,066 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 11:51:35" (1/1) ...
[2021-07-01 11:51:35,066 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 11:51:35" (1/1) ...
[2021-07-01 11:51:35,066 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 11:51:35" (1/1) ...
[2021-07-01 11:51:35,067 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 11:51:35" (1/1) ...
[2021-07-01 11:51:35,069 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 11:51:35" (1/1) ...
[2021-07-01 11:51:35,069 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 11:51:35" (1/1) ...
[2021-07-01 11:51:35,070 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-07-01 11:51:35,070 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-07-01 11:51:35,070 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2021-07-01 11:51:35,070 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2021-07-01 11:51:35,071 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "bluetooth-serverassert09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 11:51:35" (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 11:51:35,171 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure DeviceThread given in one single declaration
[2021-07-01 11:51:35,172 INFO  L130     BoogieDeclarations]: Found specification of procedure DeviceThread
[2021-07-01 11:51:35,172 INFO  L138     BoogieDeclarations]: Found implementation of procedure DeviceThread
[2021-07-01 11:51:35,172 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure ServerThread given in one single declaration
[2021-07-01 11:51:35,172 INFO  L130     BoogieDeclarations]: Found specification of procedure ServerThread
[2021-07-01 11:51:35,176 INFO  L138     BoogieDeclarations]: Found implementation of procedure ServerThread
[2021-07-01 11:51:35,176 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration
[2021-07-01 11:51:35,176 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-07-01 11:51:35,176 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-07-01 11:51:35,177 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 11:51:35,361 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-07-01 11:51:35,362 INFO  L299             CfgBuilder]: Removed 7 assume(true) statements.
[2021-07-01 11:51:35,362 WARN  L327             CfgBuilder]: Unexpected successor node of atomic block begin: DeviceThreadEXIT is neither atomic block end nor error location.
[2021-07-01 11:51:35,363 INFO  L202        PluginConnector]: Adding new model bluetooth-serverassert09.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.07 11:51:35 BoogieIcfgContainer
[2021-07-01 11:51:35,363 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-07-01 11:51:35,364 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-07-01 11:51:35,364 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2021-07-01 11:51:35,366 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2021-07-01 11:51:35,366 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "bluetooth-serverassert09.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 01.07 11:51:35" (1/2) ...
[2021-07-01 11:51:35,367 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d25369 and model type bluetooth-serverassert09.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.07 11:51:35, skipping insertion in model container
[2021-07-01 11:51:35,367 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 11:51:35" (2/2) ...
[2021-07-01 11:51:35,368 INFO  L111   eAbstractionObserver]: Analyzing ICFG bluetooth-serverassert09.bpl
[2021-07-01 11:51:35,371 WARN  L148   ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program
[2021-07-01 11:51:35,371 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-07-01 11:51:35,371 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-07-01 11:51:35,372 INFO  L474   ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2021-07-01 11:51:35,403 INFO  L149    ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions.
[2021-07-01 11:51:35,418 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 11:51:35,448 INFO  L378      AbstractCegarLoop]: Interprodecural is true
[2021-07-01 11:51:35,448 INFO  L379      AbstractCegarLoop]: Hoare is false
[2021-07-01 11:51:35,448 INFO  L380      AbstractCegarLoop]: Compute interpolants for FPandBP
[2021-07-01 11:51:35,448 INFO  L381      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2021-07-01 11:51:35,448 INFO  L382      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-07-01 11:51:35,448 INFO  L383      AbstractCegarLoop]: Difference is false
[2021-07-01 11:51:35,448 INFO  L384      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-07-01 11:51:35,448 INFO  L388      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ServerThreadThread1of1ForFork0========
[2021-07-01 11:51:35,559 INFO  L430      AbstractCegarLoop]: === Iteration 1 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]===
[2021-07-01 11:51:35,563 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-01 11:51:35,563 INFO  L82        PathProgramCache]: Analyzing trace with hash 778103678, now seen corresponding path program 1 times
[2021-07-01 11:51:35,568 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-01 11:51:35,569 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457589878]
[2021-07-01 11:51:35,569 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-01 11:51:35,620 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 11:51:35,648 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 11:51:35,649 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-01 11:51:35,649 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457589878]
[2021-07-01 11:51:35,649 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457589878] provided 1 perfect and 0 imperfect interpolant sequences
[2021-07-01 11:51:35,650 INFO  L226   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-07-01 11:51:35,650 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2021-07-01 11:51:35,650 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283744786]
[2021-07-01 11:51:35,653 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 3 states
[2021-07-01 11:51:35,653 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-01 11:51:35,660 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2021-07-01 11:51:35,662 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2021-07-01 11:51:35,662 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 11:51:35,663 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-01 11:51:35,671 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-07-01 11:51:35,671 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 11:51:35,692 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 11:51:35,692 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-07-01 11:51:35,692 INFO  L430      AbstractCegarLoop]: === Iteration 2 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]===
[2021-07-01 11:51:35,693 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-01 11:51:35,693 INFO  L82        PathProgramCache]: Analyzing trace with hash 1047086617, now seen corresponding path program 1 times
[2021-07-01 11:51:35,693 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-01 11:51:35,693 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196174491]
[2021-07-01 11:51:35,693 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-01 11:51:35,699 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 11:51:35,731 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 11:51:35,732 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-01 11:51:35,732 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196174491]
[2021-07-01 11:51:35,732 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196174491] provided 1 perfect and 0 imperfect interpolant sequences
[2021-07-01 11:51:35,732 INFO  L226   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-07-01 11:51:35,732 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2021-07-01 11:51:35,732 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14580134]
[2021-07-01 11:51:35,733 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 5 states
[2021-07-01 11:51:35,733 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-01 11:51:35,734 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-07-01 11:51:35,734 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2021-07-01 11:51:35,734 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 11:51:35,734 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-01 11:51:35,735 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 5 states, 4 states have (on average 3.75) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-07-01 11:51:35,735 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 11:51:35,735 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 11:51:36,773 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 11:51:36,774 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 11:51:36,774 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-07-01 11:51:36,774 INFO  L430      AbstractCegarLoop]: === Iteration 3 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]===
[2021-07-01 11:51:36,776 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-01 11:51:36,776 INFO  L82        PathProgramCache]: Analyzing trace with hash 859299598, now seen corresponding path program 1 times
[2021-07-01 11:51:36,777 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-01 11:51:36,777 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367128846]
[2021-07-01 11:51:36,777 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-01 11:51:36,795 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 11:51:36,871 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 11:51:36,871 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-01 11:51:36,871 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367128846]
[2021-07-01 11:51:36,871 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367128846] provided 1 perfect and 0 imperfect interpolant sequences
[2021-07-01 11:51:36,872 INFO  L226   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-07-01 11:51:36,872 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2021-07-01 11:51:36,872 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122804287]
[2021-07-01 11:51:36,872 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 9 states
[2021-07-01 11:51:36,872 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-01 11:51:36,873 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2021-07-01 11:51:36,873 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72
[2021-07-01 11:51:36,873 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 11:51:36,873 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-01 11:51:36,873 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 9 states, 8 states have (on average 2.25) internal successors, (18), 8 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 11:51:36,873 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 11:51:36,873 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 11:51:36,874 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 11:51:38,264 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 11:51:38,264 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 11:51:38,264 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2021-07-01 11:51:38,264 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-07-01 11:51:38,264 INFO  L430      AbstractCegarLoop]: === Iteration 4 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]===
[2021-07-01 11:51:38,265 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-01 11:51:38,265 INFO  L82        PathProgramCache]: Analyzing trace with hash 1198086106, now seen corresponding path program 1 times
[2021-07-01 11:51:38,265 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-01 11:51:38,265 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470614240]
[2021-07-01 11:51:38,265 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-01 11:51:38,274 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 11:51:38,388 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-07-01 11:51:38,389 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-01 11:51:38,389 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470614240]
[2021-07-01 11:51:38,389 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470614240] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 11:51:38,389 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464219039]
[2021-07-01 11:51:38,389 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 11:51:38,458 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 11:51:38,460 INFO  L263         TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 21 conjunts are in the unsatisfiable core
[2021-07-01 11:51:38,511 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-07-01 11:51:38,664 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-07-01 11:51:38,664 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464219039] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 11:51:38,664 INFO  L226   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-07-01 11:51:38,664 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5
[2021-07-01 11:51:38,665 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411736790]
[2021-07-01 11:51:38,665 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 7 states
[2021-07-01 11:51:38,665 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-01 11:51:38,665 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2021-07-01 11:51:38,665 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2021-07-01 11:51:38,665 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 11:51:38,666 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-01 11:51:38,666 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 7 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 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 11:51:38,666 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 11:51:38,666 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 11:51:38,666 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. 
[2021-07-01 11:51:38,666 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 11:51:41,012 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 11:51:41,012 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 11:51:41,012 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2021-07-01 11:51:41,013 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2021-07-01 11:51:41,233 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-07-01 11:51:41,233 INFO  L430      AbstractCegarLoop]: === Iteration 5 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]===
[2021-07-01 11:51:41,234 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-01 11:51:41,234 INFO  L82        PathProgramCache]: Analyzing trace with hash 600820883, now seen corresponding path program 1 times
[2021-07-01 11:51:41,234 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-01 11:51:41,234 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732483735]
[2021-07-01 11:51:41,234 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-01 11:51:41,260 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 11:51:41,345 INFO  L134       CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2021-07-01 11:51:41,345 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-01 11:51:41,346 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732483735]
[2021-07-01 11:51:41,346 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732483735] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 11:51:41,346 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444551827]
[2021-07-01 11:51:41,346 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 11:51:41,435 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 11:51:41,436 INFO  L263         TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 27 conjunts are in the unsatisfiable core
[2021-07-01 11:51:41,438 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-07-01 11:51:41,594 INFO  L134       CoverageAnalysis]: Checked inductivity of 13 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2021-07-01 11:51:41,595 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleZ3 [444551827] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 11:51:41,595 INFO  L226   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-07-01 11:51:41,595 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9
[2021-07-01 11:51:41,595 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526913119]
[2021-07-01 11:51:41,595 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 11 states
[2021-07-01 11:51:41,595 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-01 11:51:41,596 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2021-07-01 11:51:41,596 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110
[2021-07-01 11:51:41,596 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 11:51:41,596 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-01 11:51:41,596 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 11 states, 10 states have (on average 4.3) 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 11:51:41,596 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 11:51:41,596 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 11:51:41,597 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. 
[2021-07-01 11:51:41,597 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. 
[2021-07-01 11:51:41,597 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 11:51:43,681 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 11:51:43,682 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 11:51:43,682 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2021-07-01 11:51:43,682 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2021-07-01 11:51:43,682 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2021-07-01 11:51:43,900 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-07-01 11:51:43,901 INFO  L430      AbstractCegarLoop]: === Iteration 6 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]===
[2021-07-01 11:51:43,901 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-01 11:51:43,901 INFO  L82        PathProgramCache]: Analyzing trace with hash 818327308, now seen corresponding path program 1 times
[2021-07-01 11:51:43,901 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-01 11:51:43,901 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362809440]
[2021-07-01 11:51:43,901 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-01 11:51:43,917 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 11:51:43,984 INFO  L134       CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2021-07-01 11:51:43,984 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-01 11:51:43,984 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362809440]
[2021-07-01 11:51:43,984 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362809440] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 11:51:43,984 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910375103]
[2021-07-01 11:51:43,984 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 11:51:44,044 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 11:51:44,045 INFO  L263         TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 57 conjunts are in the unsatisfiable core
[2021-07-01 11:51:44,046 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-07-01 11:51:44,128 INFO  L134       CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2021-07-01 11:51:44,128 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleZ3 [910375103] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 11:51:44,128 INFO  L226   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-07-01 11:51:44,128 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6
[2021-07-01 11:51:44,128 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316023054]
[2021-07-01 11:51:44,128 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 8 states
[2021-07-01 11:51:44,129 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-01 11:51:44,129 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2021-07-01 11:51:44,129 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56
[2021-07-01 11:51:44,129 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 11:51:44,129 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-01 11:51:44,129 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 7 states have internal predecessors, (51), 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 11:51:44,129 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 11:51:44,129 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 11:51:44,129 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. 
[2021-07-01 11:51:44,129 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. 
[2021-07-01 11:51:44,130 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. 
[2021-07-01 11:51:44,130 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 11:51:45,838 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 11:51:45,838 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 11:51:45,838 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2021-07-01 11:51:45,838 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2021-07-01 11:51:45,838 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2021-07-01 11:51:45,838 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2021-07-01 11:51:46,056 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-07-01 11:51:46,056 INFO  L430      AbstractCegarLoop]: === Iteration 7 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]===
[2021-07-01 11:51:46,056 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-01 11:51:46,057 INFO  L82        PathProgramCache]: Analyzing trace with hash -2120601224, now seen corresponding path program 1 times
[2021-07-01 11:51:46,057 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-01 11:51:46,057 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226284981]
[2021-07-01 11:51:46,057 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-01 11:51:46,072 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 11:51:46,152 INFO  L134       CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2021-07-01 11:51:46,152 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-01 11:51:46,152 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226284981]
[2021-07-01 11:51:46,153 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226284981] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 11:51:46,153 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052940399]
[2021-07-01 11:51:46,153 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 11:51:46,198 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 11:51:46,199 INFO  L263         TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 36 conjunts are in the unsatisfiable core
[2021-07-01 11:51:46,200 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-07-01 11:51:46,321 INFO  L134       CoverageAnalysis]: Checked inductivity of 22 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2021-07-01 11:51:46,321 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052940399] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 11:51:46,321 INFO  L226   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-07-01 11:51:46,321 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10
[2021-07-01 11:51:46,321 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876217619]
[2021-07-01 11:51:46,322 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 12 states
[2021-07-01 11:51:46,322 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-01 11:51:46,322 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2021-07-01 11:51:46,322 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=78, Unknown=0, NotChecked=0, Total=132
[2021-07-01 11:51:46,322 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 11:51:46,322 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-01 11:51:46,323 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 12 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 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 11:51:46,323 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 11:51:46,323 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 11:51:46,323 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. 
[2021-07-01 11:51:46,323 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. 
[2021-07-01 11:51:46,323 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. 
[2021-07-01 11:51:46,323 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. 
[2021-07-01 11:51:46,323 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 11:51:53,520 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 11:51:53,520 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 11:51:53,520 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2021-07-01 11:51:53,520 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2021-07-01 11:51:53,521 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2021-07-01 11:51:53,521 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2021-07-01 11:51:53,532 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2021-07-01 11:51:53,748 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-07-01 11:51:53,748 INFO  L430      AbstractCegarLoop]: === Iteration 8 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]===
[2021-07-01 11:51:53,748 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-01 11:51:53,749 INFO  L82        PathProgramCache]: Analyzing trace with hash 1206859772, now seen corresponding path program 1 times
[2021-07-01 11:51:53,751 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-01 11:51:53,751 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265981250]
[2021-07-01 11:51:53,751 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-01 11:51:53,767 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 11:51:53,880 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked.
[2021-07-01 11:51:53,881 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-01 11:51:53,881 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265981250]
[2021-07-01 11:51:53,881 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265981250] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 11:51:53,881 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87407349]
[2021-07-01 11:51:53,881 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 11:51:53,917 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 11:51:53,919 INFO  L263         TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 69 conjunts are in the unsatisfiable core
[2021-07-01 11:51:53,920 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-07-01 11:51:54,051 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked.
[2021-07-01 11:51:54,051 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleZ3 [87407349] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 11:51:54,051 INFO  L226   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-07-01 11:51:54,051 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7
[2021-07-01 11:51:54,052 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878208891]
[2021-07-01 11:51:54,052 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 9 states
[2021-07-01 11:51:54,052 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-01 11:51:54,052 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2021-07-01 11:51:54,052 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72
[2021-07-01 11:51:54,052 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 11:51:54,053 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-01 11:51:54,053 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 9 states, 8 states have (on average 6.875) internal successors, (55), 8 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 11:51:54,053 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 11:51:54,053 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 11:51:54,053 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. 
[2021-07-01 11:51:54,053 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. 
[2021-07-01 11:51:54,053 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. 
[2021-07-01 11:51:54,053 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. 
[2021-07-01 11:51:54,053 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. 
[2021-07-01 11:51:54,053 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 11:52:14,220 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 11:52:14,220 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 11:52:14,220 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2021-07-01 11:52:14,220 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2021-07-01 11:52:14,220 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2021-07-01 11:52:14,220 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2021-07-01 11:52:14,220 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2021-07-01 11:52:14,220 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2021-07-01 11:52:14,437 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-07-01 11:52:14,437 INFO  L430      AbstractCegarLoop]: === Iteration 9 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]===
[2021-07-01 11:52:14,437 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-01 11:52:14,437 INFO  L82        PathProgramCache]: Analyzing trace with hash 1659658486, now seen corresponding path program 1 times
[2021-07-01 11:52:14,437 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-01 11:52:14,437 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118579560]
[2021-07-01 11:52:14,437 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-01 11:52:14,470 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 11:52:14,593 INFO  L134       CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2021-07-01 11:52:14,593 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-01 11:52:14,594 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118579560]
[2021-07-01 11:52:14,594 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118579560] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 11:52:14,594 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490050300]
[2021-07-01 11:52:14,594 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 11:52:14,628 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 11:52:14,629 INFO  L263         TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 65 conjunts are in the unsatisfiable core
[2021-07-01 11:52:14,630 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-07-01 11:52:14,710 INFO  L134       CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2021-07-01 11:52:14,710 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleZ3 [490050300] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 11:52:14,710 INFO  L226   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-07-01 11:52:14,710 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2021-07-01 11:52:14,710 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293575849]
[2021-07-01 11:52:14,711 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 10 states
[2021-07-01 11:52:14,711 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-01 11:52:14,711 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2021-07-01 11:52:14,711 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90
[2021-07-01 11:52:14,711 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 11:52:14,711 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-01 11:52:14,711 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 10 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 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 11:52:14,712 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 11:52:14,712 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 11:52:14,712 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. 
[2021-07-01 11:52:14,712 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. 
[2021-07-01 11:52:14,712 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. 
[2021-07-01 11:52:14,712 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. 
[2021-07-01 11:52:14,712 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. 
[2021-07-01 11:52:14,712 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. 
[2021-07-01 11:52:14,712 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 11:52:33,021 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 11:52:33,021 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 11:52:33,021 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2021-07-01 11:52:33,021 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2021-07-01 11:52:33,021 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2021-07-01 11:52:33,021 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2021-07-01 11:52:33,022 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2021-07-01 11:52:33,022 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2021-07-01 11:52:33,022 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2021-07-01 11:52:33,239 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-07-01 11:52:33,239 INFO  L430      AbstractCegarLoop]: === Iteration 10 === [ServerThreadErr0ASSERT_VIOLATIONASSERT]===
[2021-07-01 11:52:33,239 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-07-01 11:52:33,240 INFO  L82        PathProgramCache]: Analyzing trace with hash -1062086998, now seen corresponding path program 1 times
[2021-07-01 11:52:33,240 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-07-01 11:52:33,240 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244606190]
[2021-07-01 11:52:33,240 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-07-01 11:52:33,246 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 11:52:33,341 INFO  L134       CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2021-07-01 11:52:33,341 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-07-01 11:52:33,341 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244606190]
[2021-07-01 11:52:33,341 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244606190] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 11:52:33,341 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391930819]
[2021-07-01 11:52:33,341 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 11:52:33,373 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-07-01 11:52:33,374 INFO  L263         TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 42 conjunts are in the unsatisfiable core
[2021-07-01 11:52:33,375 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-07-01 11:52:33,487 INFO  L134       CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2021-07-01 11:52:33,487 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleZ3 [391930819] provided 0 perfect and 1 imperfect interpolant sequences
[2021-07-01 11:52:33,488 INFO  L226   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-07-01 11:52:33,488 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 13
[2021-07-01 11:52:33,490 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483292657]
[2021-07-01 11:52:33,490 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 15 states
[2021-07-01 11:52:33,490 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-07-01 11:52:33,491 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2021-07-01 11:52:33,491 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=120, Unknown=0, NotChecked=0, Total=210
[2021-07-01 11:52:33,491 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-07-01 11:52:33,491 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-07-01 11:52:33,491 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 15 states, 14 states have (on average 3.7142857142857144) internal successors, (52), 14 states have internal predecessors, (52), 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 11:52:33,491 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2021-07-01 11:52:33,491 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2021-07-01 11:52:33,491 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. 
[2021-07-01 11:52:33,491 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. 
[2021-07-01 11:52:33,491 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. 
[2021-07-01 11:52:33,491 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. 
[2021-07-01 11:52:33,491 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. 
[2021-07-01 11:52:33,491 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. 
[2021-07-01 11:52:33,491 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. 
[2021-07-01 11:52:33,491 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.