/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-Random42.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-8.wvr.bpl


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


This is Ultimate 0.2.1-98196c323137eee61a7c1131837b356358d783d4-98196c3
[2021-06-17 00:12:45,902 INFO  L177        SettingsManager]: Resetting all preferences to default values...
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[2021-06-17 00:12:45,983 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-Random42.epf
[2021-06-17 00:12:46,001 INFO  L113        SettingsManager]: Loading preferences was successful
[2021-06-17 00:12:46,001 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2021-06-17 00:12:46,001 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-06-17 00:12:46,001 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-06-17 00:12:46,002 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-06-17 00:12:46,002 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2021-06-17 00:12:46,002 INFO  L138        SettingsManager]:  * Use SBE=true
[2021-06-17 00:12:46,002 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-06-17 00:12:46,003 INFO  L138        SettingsManager]:  * sizeof long=4
[2021-06-17 00:12:46,003 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2021-06-17 00:12:46,003 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2021-06-17 00:12:46,003 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2021-06-17 00:12:46,003 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2021-06-17 00:12:46,003 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-06-17 00:12:46,003 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2021-06-17 00:12:46,003 INFO  L138        SettingsManager]:  * sizeof long double=12
[2021-06-17 00:12:46,003 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2021-06-17 00:12:46,004 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2021-06-17 00:12:46,004 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2021-06-17 00:12:46,004 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-06-17 00:12:46,004 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2021-06-17 00:12:46,004 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2021-06-17 00:12:46,004 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2021-06-17 00:12:46,004 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-06-17 00:12:46,004 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-06-17 00:12:46,005 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2021-06-17 00:12:46,005 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-06-17 00:12:46,005 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2021-06-17 00:12:46,005 INFO  L138        SettingsManager]:  * DFS Order used in POR=RANDOM
[2021-06-17 00:12:46,005 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-06-17 00:12:46,005 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2021-06-17 00:12:46,005 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA
[2021-06-17 00:12:46,005 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-06-17 00:12:46,005 INFO  L138        SettingsManager]:  * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES
[2021-06-17 00:12:46,006 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2021-06-17 00:12:46,006 INFO  L138        SettingsManager]:  * Random seed used by POR DFS order=42
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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2021-06-17 00:12:46,242 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2021-06-17 00:12:46,268 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-06-17 00:12:46,270 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-06-17 00:12:46,270 INFO  L271        PluginConnector]: Initializing Boogie PL CUP Parser...
[2021-06-17 00:12:46,271 INFO  L275        PluginConnector]: Boogie PL CUP Parser initialized
[2021-06-17 00:12:46,272 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-8.wvr.bpl
[2021-06-17 00:12:46,272 INFO  L110           BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/ticket-8.wvr.bpl'
[2021-06-17 00:12:46,295 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-06-17 00:12:46,296 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2021-06-17 00:12:46,297 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-06-17 00:12:46,297 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-06-17 00:12:46,297 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2021-06-17 00:12:46,306 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ticket-8.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 12:12:46" (1/1) ...
[2021-06-17 00:12:46,313 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ticket-8.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 12:12:46" (1/1) ...
[2021-06-17 00:12:46,319 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-06-17 00:12:46,320 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-06-17 00:12:46,320 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2021-06-17 00:12:46,320 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2021-06-17 00:12:46,325 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ticket-8.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 12:12:46" (1/1) ...
[2021-06-17 00:12:46,325 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ticket-8.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 12:12:46" (1/1) ...
[2021-06-17 00:12:46,332 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ticket-8.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 12:12:46" (1/1) ...
[2021-06-17 00:12:46,332 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ticket-8.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 12:12:46" (1/1) ...
[2021-06-17 00:12:46,335 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ticket-8.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 12:12:46" (1/1) ...
[2021-06-17 00:12:46,335 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ticket-8.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 12:12:46" (1/1) ...
[2021-06-17 00:12:46,336 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ticket-8.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 12:12:46" (1/1) ...
[2021-06-17 00:12:46,337 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-06-17 00:12:46,337 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-06-17 00:12:46,338 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2021-06-17 00:12:46,338 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2021-06-17 00:12:46,338 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ticket-8.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 12:12:46" (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
[2021-06-17 00:12:46,381 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration
[2021-06-17 00:12:46,381 INFO  L130     BoogieDeclarations]: Found specification of procedure thread1
[2021-06-17 00:12:46,381 INFO  L138     BoogieDeclarations]: Found implementation of procedure thread1
[2021-06-17 00:12:46,381 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration
[2021-06-17 00:12:46,381 INFO  L130     BoogieDeclarations]: Found specification of procedure thread2
[2021-06-17 00:12:46,381 INFO  L138     BoogieDeclarations]: Found implementation of procedure thread2
[2021-06-17 00:12:46,381 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration
[2021-06-17 00:12:46,382 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-06-17 00:12:46,382 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-06-17 00:12:46,382 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration
[2021-06-17 00:12:46,382 INFO  L130     BoogieDeclarations]: Found specification of procedure thread3
[2021-06-17 00:12:46,382 INFO  L138     BoogieDeclarations]: Found implementation of procedure thread3
[2021-06-17 00:12:46,382 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration
[2021-06-17 00:12:46,382 INFO  L130     BoogieDeclarations]: Found specification of procedure thread4
[2021-06-17 00:12:46,382 INFO  L138     BoogieDeclarations]: Found implementation of procedure thread4
[2021-06-17 00:12:46,382 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration
[2021-06-17 00:12:46,383 INFO  L130     BoogieDeclarations]: Found specification of procedure thread5
[2021-06-17 00:12:46,383 INFO  L138     BoogieDeclarations]: Found implementation of procedure thread5
[2021-06-17 00:12:46,383 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure thread6 given in one single declaration
[2021-06-17 00:12:46,383 INFO  L130     BoogieDeclarations]: Found specification of procedure thread6
[2021-06-17 00:12:46,383 INFO  L138     BoogieDeclarations]: Found implementation of procedure thread6
[2021-06-17 00:12:46,383 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure thread7 given in one single declaration
[2021-06-17 00:12:46,383 INFO  L130     BoogieDeclarations]: Found specification of procedure thread7
[2021-06-17 00:12:46,383 INFO  L138     BoogieDeclarations]: Found implementation of procedure thread7
[2021-06-17 00:12:46,383 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure thread8 given in one single declaration
[2021-06-17 00:12:46,384 INFO  L130     BoogieDeclarations]: Found specification of procedure thread8
[2021-06-17 00:12:46,384 INFO  L138     BoogieDeclarations]: Found implementation of procedure thread8
[2021-06-17 00:12:46,384 WARN  L209             CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement
[2021-06-17 00:12:46,659 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-06-17 00:12:46,660 INFO  L299             CfgBuilder]: Removed 0 assume(true) statements.
[2021-06-17 00:12:46,661 INFO  L202        PluginConnector]: Adding new model ticket-8.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.06 12:12:46 BoogieIcfgContainer
[2021-06-17 00:12:46,661 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-06-17 00:12:46,662 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-06-17 00:12:46,663 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2021-06-17 00:12:46,664 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2021-06-17 00:12:46,665 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-8.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 17.06 12:12:46" (1/2) ...
[2021-06-17 00:12:46,665 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41cf4121 and model type ticket-8.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.06 12:12:46, skipping insertion in model container
[2021-06-17 00:12:46,665 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ticket-8.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.06 12:12:46" (2/2) ...
[2021-06-17 00:12:46,666 INFO  L111   eAbstractionObserver]: Analyzing ICFG ticket-8.wvr.bpl
[2021-06-17 00:12:46,670 WARN  L148   ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program
[2021-06-17 00:12:46,670 INFO  L214   ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-06-17 00:12:46,670 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-06-17 00:12:46,671 INFO  L470   ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2021-06-17 00:12:46,756 INFO  L149    ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions.
[2021-06-17 00:12:46,770 INFO  L255      AbstractCegarLoop]: Starting to check reachability of 9 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)
[2021-06-17 00:12:46,807 INFO  L378      AbstractCegarLoop]: Interprodecural is true
[2021-06-17 00:12:46,807 INFO  L379      AbstractCegarLoop]: Hoare is false
[2021-06-17 00:12:46,807 INFO  L380      AbstractCegarLoop]: Compute interpolants for FPandBP
[2021-06-17 00:12:46,807 INFO  L381      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2021-06-17 00:12:46,807 INFO  L382      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-06-17 00:12:46,807 INFO  L383      AbstractCegarLoop]: Difference is false
[2021-06-17 00:12:46,807 INFO  L384      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-06-17 00:12:46,808 INFO  L388      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start========
Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000
[2021-06-17 00:12:46,960 INFO  L430      AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]===
[2021-06-17 00:12:46,964 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-06-17 00:12:46,964 INFO  L82        PathProgramCache]: Analyzing trace with hash 667531008, now seen corresponding path program 1 times
[2021-06-17 00:12:46,971 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-17 00:12:46,971 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790468145]
[2021-06-17 00:12:46,971 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-17 00:12:47,052 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-17 00:12:47,137 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-17 00:12:47,138 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-17 00:12:47,138 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790468145]
[2021-06-17 00:12:47,138 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790468145] provided 1 perfect and 0 imperfect interpolant sequences
[2021-06-17 00:12:47,139 INFO  L226   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-06-17 00:12:47,139 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2021-06-17 00:12:47,139 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411643329]
[2021-06-17 00:12:47,142 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 7 states
[2021-06-17 00:12:47,142 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-17 00:12:47,149 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2021-06-17 00:12:47,150 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2021-06-17 00:12:47,150 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-06-17 00:12:47,151 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-06-17 00:12:47,153 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 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)
[2021-06-17 00:12:47,153 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-06-17 00:12:47,284 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2021-06-17 00:12:47,284 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2021-06-17 00:12:47,285 INFO  L430      AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]===
[2021-06-17 00:12:47,285 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-06-17 00:12:47,285 INFO  L82        PathProgramCache]: Analyzing trace with hash -762248156, now seen corresponding path program 2 times
[2021-06-17 00:12:47,285 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-17 00:12:47,286 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295785446]
[2021-06-17 00:12:47,286 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-17 00:12:47,302 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-17 00:12:47,332 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-17 00:12:47,333 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-17 00:12:47,333 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295785446]
[2021-06-17 00:12:47,333 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295785446] provided 1 perfect and 0 imperfect interpolant sequences
[2021-06-17 00:12:47,333 INFO  L226   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-06-17 00:12:47,333 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2021-06-17 00:12:47,333 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215109802]
[2021-06-17 00:12:47,334 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 6 states
[2021-06-17 00:12:47,335 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-17 00:12:47,335 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-06-17 00:12:47,335 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30
[2021-06-17 00:12:47,335 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-06-17 00:12:47,336 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-06-17 00:12:47,336 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 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)
[2021-06-17 00:12:47,336 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. 
[2021-06-17 00:12:47,336 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-06-17 00:12:47,495 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2021-06-17 00:12:47,495 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2021-06-17 00:12:47,496 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2021-06-17 00:12:47,496 INFO  L430      AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]===
[2021-06-17 00:12:47,496 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-06-17 00:12:47,496 INFO  L82        PathProgramCache]: Analyzing trace with hash -659676618, now seen corresponding path program 3 times
[2021-06-17 00:12:47,496 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-17 00:12:47,497 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406251743]
[2021-06-17 00:12:47,497 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-17 00:12:47,510 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-17 00:12:47,589 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-17 00:12:47,589 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-17 00:12:47,589 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406251743]
[2021-06-17 00:12:47,589 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406251743] provided 1 perfect and 0 imperfect interpolant sequences
[2021-06-17 00:12:47,590 INFO  L226   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-06-17 00:12:47,590 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2021-06-17 00:12:47,590 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144325576]
[2021-06-17 00:12:47,591 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 9 states
[2021-06-17 00:12:47,591 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-17 00:12:47,593 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2021-06-17 00:12:47,593 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72
[2021-06-17 00:12:47,594 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-06-17 00:12:47,594 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-06-17 00:12:47,594 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 9 states, 9 states have (on average 6.666666666666667) internal successors, (60), 8 states have internal predecessors, (60), 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)
[2021-06-17 00:12:47,594 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. 
[2021-06-17 00:12:47,594 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. 
[2021-06-17 00:12:47,594 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-06-17 00:12:47,759 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2021-06-17 00:12:47,759 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2021-06-17 00:12:47,760 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2021-06-17 00:12:47,760 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2021-06-17 00:12:47,760 INFO  L430      AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]===
[2021-06-17 00:12:47,761 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-06-17 00:12:47,761 INFO  L82        PathProgramCache]: Analyzing trace with hash -908986764, now seen corresponding path program 4 times
[2021-06-17 00:12:47,761 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-17 00:12:47,762 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687830721]
[2021-06-17 00:12:47,762 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-17 00:12:47,784 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-17 00:12:47,881 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-17 00:12:47,881 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-17 00:12:47,882 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687830721]
[2021-06-17 00:12:47,882 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687830721] provided 1 perfect and 0 imperfect interpolant sequences
[2021-06-17 00:12:47,882 INFO  L226   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-06-17 00:12:47,882 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2021-06-17 00:12:47,882 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911136305]
[2021-06-17 00:12:47,882 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 10 states
[2021-06-17 00:12:47,882 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-17 00:12:47,883 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2021-06-17 00:12:47,883 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90
[2021-06-17 00:12:47,883 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-06-17 00:12:47,883 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-06-17 00:12:47,883 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 10 states, 10 states have (on average 6.0) internal successors, (60), 9 states have internal predecessors, (60), 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)
[2021-06-17 00:12:47,883 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. 
[2021-06-17 00:12:47,883 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. 
[2021-06-17 00:12:47,884 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. 
[2021-06-17 00:12:47,884 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-06-17 00:12:48,082 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2021-06-17 00:12:48,082 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2021-06-17 00:12:48,082 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2021-06-17 00:12:48,083 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2021-06-17 00:12:48,083 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2021-06-17 00:12:48,083 INFO  L430      AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]===
[2021-06-17 00:12:48,083 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-06-17 00:12:48,083 INFO  L82        PathProgramCache]: Analyzing trace with hash 148079648, now seen corresponding path program 5 times
[2021-06-17 00:12:48,084 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-17 00:12:48,084 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750398683]
[2021-06-17 00:12:48,084 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-17 00:12:48,093 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-17 00:12:48,121 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-17 00:12:48,121 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-17 00:12:48,121 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750398683]
[2021-06-17 00:12:48,121 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750398683] provided 1 perfect and 0 imperfect interpolant sequences
[2021-06-17 00:12:48,122 INFO  L226   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-06-17 00:12:48,122 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2021-06-17 00:12:48,122 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502113665]
[2021-06-17 00:12:48,122 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 7 states
[2021-06-17 00:12:48,122 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-17 00:12:48,122 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2021-06-17 00:12:48,123 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2021-06-17 00:12:48,123 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-06-17 00:12:48,123 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-06-17 00:12:48,123 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 6 states have internal predecessors, (60), 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)
[2021-06-17 00:12:48,123 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. 
[2021-06-17 00:12:48,123 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. 
[2021-06-17 00:12:48,123 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. 
[2021-06-17 00:12:48,123 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. 
[2021-06-17 00:12:48,123 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-06-17 00:12:48,338 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2021-06-17 00:12:48,338 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2021-06-17 00:12:48,338 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2021-06-17 00:12:48,338 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2021-06-17 00:12:48,339 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2021-06-17 00:12:48,339 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2021-06-17 00:12:48,339 INFO  L430      AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]===
[2021-06-17 00:12:48,339 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-06-17 00:12:48,339 INFO  L82        PathProgramCache]: Analyzing trace with hash 1529366088, now seen corresponding path program 6 times
[2021-06-17 00:12:48,339 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-17 00:12:48,340 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85870443]
[2021-06-17 00:12:48,340 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-17 00:12:48,347 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-17 00:12:48,383 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-17 00:12:48,383 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-17 00:12:48,384 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85870443]
[2021-06-17 00:12:48,384 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85870443] provided 1 perfect and 0 imperfect interpolant sequences
[2021-06-17 00:12:48,384 INFO  L226   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-06-17 00:12:48,384 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2021-06-17 00:12:48,384 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073838485]
[2021-06-17 00:12:48,384 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 8 states
[2021-06-17 00:12:48,385 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-17 00:12:48,385 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2021-06-17 00:12:48,385 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2021-06-17 00:12:48,385 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-06-17 00:12:48,385 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-06-17 00:12:48,385 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 8 states, 8 states have (on average 7.5) internal successors, (60), 7 states have internal predecessors, (60), 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)
[2021-06-17 00:12:48,386 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. 
[2021-06-17 00:12:48,386 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. 
[2021-06-17 00:12:48,386 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. 
[2021-06-17 00:12:48,386 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. 
[2021-06-17 00:12:48,386 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. 
[2021-06-17 00:12:48,386 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-06-17 00:12:48,543 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2021-06-17 00:12:48,544 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2021-06-17 00:12:48,544 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2021-06-17 00:12:48,544 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2021-06-17 00:12:48,544 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2021-06-17 00:12:48,544 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2021-06-17 00:12:48,544 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2021-06-17 00:12:48,544 INFO  L430      AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]===
[2021-06-17 00:12:48,545 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-06-17 00:12:48,545 INFO  L82        PathProgramCache]: Analyzing trace with hash 2122539644, now seen corresponding path program 7 times
[2021-06-17 00:12:48,545 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-17 00:12:48,545 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25252914]
[2021-06-17 00:12:48,545 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-17 00:12:48,565 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-17 00:12:48,619 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-17 00:12:48,620 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-17 00:12:48,620 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25252914]
[2021-06-17 00:12:48,620 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25252914] provided 1 perfect and 0 imperfect interpolant sequences
[2021-06-17 00:12:48,620 INFO  L226   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-06-17 00:12:48,620 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2021-06-17 00:12:48,620 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906889130]
[2021-06-17 00:12:48,621 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 8 states
[2021-06-17 00:12:48,621 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-17 00:12:48,627 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2021-06-17 00:12:48,628 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2021-06-17 00:12:48,628 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-06-17 00:12:48,629 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-06-17 00:12:48,629 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 8 states, 8 states have (on average 7.5) internal successors, (60), 7 states have internal predecessors, (60), 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)
[2021-06-17 00:12:48,629 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. 
[2021-06-17 00:12:48,629 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. 
[2021-06-17 00:12:48,629 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. 
[2021-06-17 00:12:48,629 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. 
[2021-06-17 00:12:48,629 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. 
[2021-06-17 00:12:48,629 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. 
[2021-06-17 00:12:48,629 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-06-17 00:12:48,738 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2021-06-17 00:12:48,738 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2021-06-17 00:12:48,738 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2021-06-17 00:12:48,739 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2021-06-17 00:12:48,739 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2021-06-17 00:12:48,739 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2021-06-17 00:12:48,739 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2021-06-17 00:12:48,739 WARN  L519      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2021-06-17 00:12:48,739 INFO  L430      AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]===
[2021-06-17 00:12:48,739 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-06-17 00:12:48,739 INFO  L82        PathProgramCache]: Analyzing trace with hash 1057855174, now seen corresponding path program 8 times
[2021-06-17 00:12:48,740 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-06-17 00:12:48,740 INFO  L361   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233845422]
[2021-06-17 00:12:48,740 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-06-17 00:12:48,756 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-06-17 00:12:48,851 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-06-17 00:12:48,851 INFO  L179   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-06-17 00:12:48,851 INFO  L361   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233845422]
[2021-06-17 00:12:48,851 INFO  L200   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233845422] provided 1 perfect and 0 imperfect interpolant sequences
[2021-06-17 00:12:48,851 INFO  L226   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2021-06-17 00:12:48,851 INFO  L239   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2021-06-17 00:12:48,851 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038431503]
[2021-06-17 00:12:48,852 INFO  L462      AbstractCegarLoop]: Interpolant automaton has 5 states
[2021-06-17 00:12:48,852 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-06-17 00:12:48,852 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-06-17 00:12:48,852 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20
[2021-06-17 00:12:48,852 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-06-17 00:12:48,852 INFO  L482      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-06-17 00:12:48,853 INFO  L483      AbstractCegarLoop]: Interpolant automaton has  has 5 states, 5 states have (on average 12.0) internal successors, (60), 4 states have internal predecessors, (60), 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)
[2021-06-17 00:12:48,853 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. 
[2021-06-17 00:12:48,853 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. 
[2021-06-17 00:12:48,853 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. 
[2021-06-17 00:12:48,853 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. 
[2021-06-17 00:12:48,853 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. 
[2021-06-17 00:12:48,853 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. 
[2021-06-17 00:12:48,853 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. 
[2021-06-17 00:12:48,853 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.