/usr/bin/java -Xmx16000000000 -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-Sleep-NoLbe-New_States.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/nonblocking-counter-alt2.wvr.bpl


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


This is Ultimate 0.2.1-7cd14b8b9f04096d8ddfd3d9cd8a4ac590fe5404-7cd14b8
[2021-03-12 18:56:48,297 INFO  L177        SettingsManager]: Resetting all preferences to default values...
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[2021-03-12 18:56:48,379 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2021-03-12 18:56:48,383 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-Sleep-NoLbe-New_States.epf
[2021-03-12 18:56:48,409 INFO  L113        SettingsManager]: Loading preferences was successful
[2021-03-12 18:56:48,410 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2021-03-12 18:56:48,410 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-03-12 18:56:48,410 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-03-12 18:56:48,413 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-03-12 18:56:48,413 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2021-03-12 18:56:48,413 INFO  L138        SettingsManager]:  * Use SBE=true
[2021-03-12 18:56:48,413 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-03-12 18:56:48,413 INFO  L138        SettingsManager]:  * sizeof long=4
[2021-03-12 18:56:48,413 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2021-03-12 18:56:48,414 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2021-03-12 18:56:48,414 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2021-03-12 18:56:48,414 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2021-03-12 18:56:48,414 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-03-12 18:56:48,414 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2021-03-12 18:56:48,415 INFO  L138        SettingsManager]:  * sizeof long double=12
[2021-03-12 18:56:48,415 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2021-03-12 18:56:48,415 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2021-03-12 18:56:48,415 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2021-03-12 18:56:48,415 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-03-12 18:56:48,415 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2021-03-12 18:56:48,415 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2021-03-12 18:56:48,415 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2021-03-12 18:56:48,415 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-03-12 18:56:48,415 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-03-12 18:56:48,415 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2021-03-12 18:56:48,416 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-03-12 18:56:48,416 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2021-03-12 18:56:48,416 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-03-12 18:56:48,416 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2021-03-12 18:56:48,416 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA
[2021-03-12 18:56:48,416 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-03-12 18:56:48,416 INFO  L138        SettingsManager]:  * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES
[2021-03-12 18:56:48,416 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2021-03-12 18:56:48,688 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2021-03-12 18:56:48,707 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-03-12 18:56:48,709 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-03-12 18:56:48,710 INFO  L271        PluginConnector]: Initializing Boogie PL CUP Parser...
[2021-03-12 18:56:48,710 INFO  L275        PluginConnector]: Boogie PL CUP Parser initialized
[2021-03-12 18:56:48,711 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/nonblocking-counter-alt2.wvr.bpl
[2021-03-12 18:56:48,718 INFO  L110           BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/nonblocking-counter-alt2.wvr.bpl'
[2021-03-12 18:56:48,745 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-03-12 18:56:48,756 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2021-03-12 18:56:48,757 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-03-12 18:56:48,757 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-03-12 18:56:48,757 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2021-03-12 18:56:48,767 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "nonblocking-counter-alt2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 06:56:48" (1/1) ...
[2021-03-12 18:56:48,771 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "nonblocking-counter-alt2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 06:56:48" (1/1) ...
[2021-03-12 18:56:48,778 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-03-12 18:56:48,779 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-03-12 18:56:48,779 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2021-03-12 18:56:48,779 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2021-03-12 18:56:48,785 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "nonblocking-counter-alt2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 06:56:48" (1/1) ...
[2021-03-12 18:56:48,785 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "nonblocking-counter-alt2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 06:56:48" (1/1) ...
[2021-03-12 18:56:48,785 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "nonblocking-counter-alt2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 06:56:48" (1/1) ...
[2021-03-12 18:56:48,785 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "nonblocking-counter-alt2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 06:56:48" (1/1) ...
[2021-03-12 18:56:48,788 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "nonblocking-counter-alt2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 06:56:48" (1/1) ...
[2021-03-12 18:56:48,791 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "nonblocking-counter-alt2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 06:56:48" (1/1) ...
[2021-03-12 18:56:48,791 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "nonblocking-counter-alt2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 06:56:48" (1/1) ...
[2021-03-12 18:56:48,792 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-03-12 18:56:48,793 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-03-12 18:56:48,793 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2021-03-12 18:56:48,793 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2021-03-12 18:56:48,794 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "nonblocking-counter-alt2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 06:56:48" (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
[2021-03-12 18:56:48,860 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration
[2021-03-12 18:56:48,860 INFO  L130     BoogieDeclarations]: Found specification of procedure thread1
[2021-03-12 18:56:48,860 INFO  L138     BoogieDeclarations]: Found implementation of procedure thread1
[2021-03-12 18:56:48,860 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration
[2021-03-12 18:56:48,860 INFO  L130     BoogieDeclarations]: Found specification of procedure thread2
[2021-03-12 18:56:48,860 INFO  L138     BoogieDeclarations]: Found implementation of procedure thread2
[2021-03-12 18:56:48,861 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration
[2021-03-12 18:56:48,861 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-03-12 18:56:48,861 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-03-12 18:56:48,861 WARN  L209             CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement
[2021-03-12 18:56:49,024 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-03-12 18:56:49,024 INFO  L299             CfgBuilder]: Removed 0 assume(true) statements.
[2021-03-12 18:56:49,026 INFO  L202        PluginConnector]: Adding new model nonblocking-counter-alt2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.03 06:56:49 BoogieIcfgContainer
[2021-03-12 18:56:49,026 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-03-12 18:56:49,027 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-03-12 18:56:49,027 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2021-03-12 18:56:49,029 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2021-03-12 18:56:49,029 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nonblocking-counter-alt2.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 12.03 06:56:48" (1/2) ...
[2021-03-12 18:56:49,030 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31bb6284 and model type nonblocking-counter-alt2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.03 06:56:49, skipping insertion in model container
[2021-03-12 18:56:49,030 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "nonblocking-counter-alt2.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.03 06:56:49" (2/2) ...
[2021-03-12 18:56:49,031 INFO  L111   eAbstractionObserver]: Analyzing ICFG nonblocking-counter-alt2.wvr.bpl
[2021-03-12 18:56:49,035 WARN  L142   ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program
[2021-03-12 18:56:49,035 INFO  L153   ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-03-12 18:56:49,038 INFO  L165   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2021-03-12 18:56:49,039 INFO  L323   ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2021-03-12 18:56:49,062 INFO  L149    ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions.
[2021-03-12 18:56:49,074 INFO  L253      AbstractCegarLoop]: Starting to check reachability of 3 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
[2021-03-12 18:56:49,118 INFO  L376      AbstractCegarLoop]: Interprodecural is true
[2021-03-12 18:56:49,118 INFO  L377      AbstractCegarLoop]: Hoare is true
[2021-03-12 18:56:49,118 INFO  L378      AbstractCegarLoop]: Compute interpolants for FPandBP
[2021-03-12 18:56:49,118 INFO  L379      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2021-03-12 18:56:49,118 INFO  L380      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2021-03-12 18:56:49,118 INFO  L381      AbstractCegarLoop]: Difference is false
[2021-03-12 18:56:49,119 INFO  L382      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2021-03-12 18:56:49,119 INFO  L386      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2021-03-12 18:56:49,212 INFO  L428      AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-03-12 18:56:49,215 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-03-12 18:56:49,216 INFO  L82        PathProgramCache]: Analyzing trace with hash -1178070463, now seen corresponding path program 1 times
[2021-03-12 18:56:49,222 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-03-12 18:56:49,222 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119516215]
[2021-03-12 18:56:49,222 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-03-12 18:56:49,293 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-03-12 18:56:49,417 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-03-12 18:56:49,417 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119516215]
[2021-03-12 18:56:49,418 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330023214]
[2021-03-12 18:56:49,418 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
[2021-03-12 18:56:49,459 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-03-12 18:56:49,461 INFO  L263         TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core
[2021-03-12 18:56:49,464 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-03-12 18:56:49,595 INFO  L134       CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-03-12 18:56:49,595 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-03-12 18:56:49,595 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8
[2021-03-12 18:56:49,596 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237435181]
[2021-03-12 18:56:49,599 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 8 states
[2021-03-12 18:56:49,600 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-03-12 18:56:49,607 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2021-03-12 18:56:49,609 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2021-03-12 18:56:49,609 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-03-12 18:56:49,610 INFO  L480      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-03-12 18:56:49,611 INFO  L481      AbstractCegarLoop]: Interpolant automaton has  has 8 states, 8 states have (on average 3.75) internal successors, (30), 8 states have internal predecessors, (30), 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)
[2021-03-12 18:56:49,612 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-03-12 18:56:49,648 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2021-03-12 18:56:49,863 WARN  L517      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0
[2021-03-12 18:56:49,863 INFO  L428      AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-03-12 18:56:49,864 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-03-12 18:56:49,864 INFO  L82        PathProgramCache]: Analyzing trace with hash 1716197887, now seen corresponding path program 2 times
[2021-03-12 18:56:49,864 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-03-12 18:56:49,864 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198070090]
[2021-03-12 18:56:49,864 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-03-12 18:56:49,872 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-03-12 18:56:49,957 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-03-12 18:56:49,957 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198070090]
[2021-03-12 18:56:49,957 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878600531]
[2021-03-12 18:56:49,957 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 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
[2021-03-12 18:56:49,990 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2021-03-12 18:56:49,990 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2021-03-12 18:56:49,990 INFO  L263         TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 7 conjunts are in the unsatisfiable core
[2021-03-12 18:56:49,991 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-03-12 18:56:50,155 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-03-12 18:56:50,155 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-03-12 18:56:50,155 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 13
[2021-03-12 18:56:50,156 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134370779]
[2021-03-12 18:56:50,156 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 14 states
[2021-03-12 18:56:50,156 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-03-12 18:56:50,157 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2021-03-12 18:56:50,157 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182
[2021-03-12 18:56:50,157 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-03-12 18:56:50,157 INFO  L480      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-03-12 18:56:50,158 INFO  L481      AbstractCegarLoop]: Interpolant automaton has  has 14 states, 14 states have (on average 2.642857142857143) internal successors, (37), 13 states have internal predecessors, (37), 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)
[2021-03-12 18:56:50,158 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. 
[2021-03-12 18:56:50,158 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-03-12 18:56:50,335 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2021-03-12 18:56:50,336 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2021-03-12 18:56:50,559 WARN  L517      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-03-12 18:56:50,560 INFO  L428      AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-03-12 18:56:50,560 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-03-12 18:56:50,561 INFO  L82        PathProgramCache]: Analyzing trace with hash -709724757, now seen corresponding path program 3 times
[2021-03-12 18:56:50,561 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-03-12 18:56:50,561 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78348271]
[2021-03-12 18:56:50,561 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-03-12 18:56:50,572 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-03-12 18:56:50,780 INFO  L134       CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-03-12 18:56:50,781 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78348271]
[2021-03-12 18:56:50,781 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425362248]
[2021-03-12 18:56:50,781 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
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
[2021-03-12 18:56:50,807 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2021-03-12 18:56:50,808 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2021-03-12 18:56:50,809 INFO  L263         TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 20 conjunts are in the unsatisfiable core
[2021-03-12 18:56:50,810 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-03-12 18:56:51,237 INFO  L134       CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-03-12 18:56:51,237 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-03-12 18:56:51,238 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 20
[2021-03-12 18:56:51,238 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684826841]
[2021-03-12 18:56:51,238 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 21 states
[2021-03-12 18:56:51,238 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-03-12 18:56:51,238 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2021-03-12 18:56:51,239 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=339, Unknown=0, NotChecked=0, Total=420
[2021-03-12 18:56:51,239 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-03-12 18:56:51,239 INFO  L480      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-03-12 18:56:51,239 INFO  L481      AbstractCegarLoop]: Interpolant automaton has  has 21 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 20 states have internal predecessors, (41), 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)
[2021-03-12 18:56:51,240 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. 
[2021-03-12 18:56:51,240 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. 
[2021-03-12 18:56:51,240 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-03-12 18:56:51,582 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2021-03-12 18:56:51,582 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2021-03-12 18:56:51,583 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2021-03-12 18:56:51,800 WARN  L517      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-03-12 18:56:51,800 INFO  L428      AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-03-12 18:56:51,801 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-03-12 18:56:51,801 INFO  L82        PathProgramCache]: Analyzing trace with hash -37563595, now seen corresponding path program 4 times
[2021-03-12 18:56:51,801 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-03-12 18:56:51,801 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776174679]
[2021-03-12 18:56:51,801 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-03-12 18:56:51,811 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-03-12 18:56:51,978 INFO  L134       CoverageAnalysis]: Checked inductivity of 58 backedges. 34 proven. 22 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2021-03-12 18:56:51,978 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776174679]
[2021-03-12 18:56:51,978 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614179773]
[2021-03-12 18:56:51,978 INFO  L93    rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
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
[2021-03-12 18:56:52,007 INFO  L228   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2021-03-12 18:56:52,007 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2021-03-12 18:56:52,008 INFO  L263         TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 16 conjunts are in the unsatisfiable core
[2021-03-12 18:56:52,009 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-03-12 18:56:52,305 INFO  L134       CoverageAnalysis]: Checked inductivity of 58 backedges. 25 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-03-12 18:56:52,305 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-03-12 18:56:52,305 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14] total 25
[2021-03-12 18:56:52,305 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022414336]
[2021-03-12 18:56:52,306 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 26 states
[2021-03-12 18:56:52,306 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-03-12 18:56:52,306 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants.
[2021-03-12 18:56:52,306 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=524, Unknown=0, NotChecked=0, Total=650
[2021-03-12 18:56:52,306 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-03-12 18:56:52,307 INFO  L480      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-03-12 18:56:52,307 INFO  L481      AbstractCegarLoop]: Interpolant automaton has  has 26 states, 26 states have (on average 2.4615384615384617) internal successors, (64), 25 states have internal predecessors, (64), 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)
[2021-03-12 18:56:52,307 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. 
[2021-03-12 18:56:52,307 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. 
[2021-03-12 18:56:52,307 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. 
[2021-03-12 18:56:52,307 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-03-12 18:56:52,662 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2021-03-12 18:56:52,662 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2021-03-12 18:56:52,662 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2021-03-12 18:56:52,663 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. 
[2021-03-12 18:56:52,871 WARN  L517      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12
[2021-03-12 18:56:52,871 INFO  L428      AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-03-12 18:56:52,872 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-03-12 18:56:52,872 INFO  L82        PathProgramCache]: Analyzing trace with hash -992873513, now seen corresponding path program 5 times
[2021-03-12 18:56:52,872 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-03-12 18:56:52,872 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868858567]
[2021-03-12 18:56:52,873 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-03-12 18:56:52,925 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-03-12 18:56:53,288 INFO  L134       CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-03-12 18:56:53,288 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868858567]
[2021-03-12 18:56:53,288 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896851487]
[2021-03-12 18:56:53,289 INFO  L93    rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
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
[2021-03-12 18:56:53,339 INFO  L228   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s)
[2021-03-12 18:56:53,340 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2021-03-12 18:56:53,341 WARN  L261         TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 50 conjunts are in the unsatisfiable core
[2021-03-12 18:56:53,344 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-03-12 18:56:54,243 INFO  L134       CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-03-12 18:56:54,243 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-03-12 18:56:54,243 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21] total 40
[2021-03-12 18:56:54,243 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974778706]
[2021-03-12 18:56:54,244 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 41 states
[2021-03-12 18:56:54,244 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-03-12 18:56:54,244 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants.
[2021-03-12 18:56:54,245 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=191, Invalid=1449, Unknown=0, NotChecked=0, Total=1640
[2021-03-12 18:56:54,245 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-03-12 18:56:54,245 INFO  L480      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-03-12 18:56:54,245 INFO  L481      AbstractCegarLoop]: Interpolant automaton has  has 41 states, 41 states have (on average 1.975609756097561) internal successors, (81), 40 states have internal predecessors, (81), 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)
[2021-03-12 18:56:54,245 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. 
[2021-03-12 18:56:54,245 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. 
[2021-03-12 18:56:54,245 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. 
[2021-03-12 18:56:54,245 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. 
[2021-03-12 18:56:54,245 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-03-12 18:56:55,631 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2021-03-12 18:56:55,631 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2021-03-12 18:56:55,631 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2021-03-12 18:56:55,631 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. 
[2021-03-12 18:56:55,632 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. 
[2021-03-12 18:56:55,843 WARN  L517      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17
[2021-03-12 18:56:55,843 INFO  L428      AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-03-12 18:56:55,844 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-03-12 18:56:55,844 INFO  L82        PathProgramCache]: Analyzing trace with hash 1591317529, now seen corresponding path program 6 times
[2021-03-12 18:56:55,844 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-03-12 18:56:55,844 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [762326738]
[2021-03-12 18:56:55,844 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-03-12 18:56:55,881 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-03-12 18:56:56,208 INFO  L134       CoverageAnalysis]: Checked inductivity of 338 backedges. 254 proven. 82 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2021-03-12 18:56:56,208 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [762326738]
[2021-03-12 18:56:56,208 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938015101]
[2021-03-12 18:56:56,208 INFO  L93    rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
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
[2021-03-12 18:56:56,242 INFO  L228   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s)
[2021-03-12 18:56:56,242 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2021-03-12 18:56:56,243 INFO  L263         TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 33 conjunts are in the unsatisfiable core
[2021-03-12 18:56:56,245 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-03-12 18:56:56,984 INFO  L134       CoverageAnalysis]: Checked inductivity of 338 backedges. 144 proven. 186 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2021-03-12 18:56:56,984 INFO  L219   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-03-12 18:56:56,985 INFO  L232   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 24] total 49
[2021-03-12 18:56:56,985 INFO  L155   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368631266]
[2021-03-12 18:56:56,986 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 50 states
[2021-03-12 18:56:56,986 INFO  L142   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-03-12 18:56:56,987 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants.
[2021-03-12 18:56:56,987 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=418, Invalid=2032, Unknown=0, NotChecked=0, Total=2450
[2021-03-12 18:56:56,987 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-03-12 18:56:56,987 INFO  L480      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-03-12 18:56:56,988 INFO  L481      AbstractCegarLoop]: Interpolant automaton has  has 50 states, 50 states have (on average 2.3) internal successors, (115), 49 states have internal predecessors, (115), 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)
[2021-03-12 18:56:56,988 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. 
[2021-03-12 18:56:56,988 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. 
[2021-03-12 18:56:56,988 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. 
[2021-03-12 18:56:56,988 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 21 states. 
[2021-03-12 18:56:56,988 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. 
[2021-03-12 18:56:56,988 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-03-12 18:56:58,156 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2021-03-12 18:56:58,156 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2021-03-12 18:56:58,156 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2021-03-12 18:56:58,156 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. 
[2021-03-12 18:56:58,156 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. 
[2021-03-12 18:56:58,158 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. 
[2021-03-12 18:56:58,358 WARN  L517      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48
[2021-03-12 18:56:58,359 INFO  L428      AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2021-03-12 18:56:58,359 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-03-12 18:56:58,359 INFO  L82        PathProgramCache]: Analyzing trace with hash -1085700877, now seen corresponding path program 7 times
[2021-03-12 18:56:58,359 INFO  L162   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-03-12 18:56:58,359 INFO  L353   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285685471]
[2021-03-12 18:56:58,359 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-03-12 18:56:58,420 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-03-12 18:56:59,305 INFO  L134       CoverageAnalysis]: Checked inductivity of 512 backedges. 0 proven. 512 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2021-03-12 18:56:59,306 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285685471]
[2021-03-12 18:56:59,306 INFO  L353   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612733848]
[2021-03-12 18:56:59,306 INFO  L93    rtionOrderModulation]: Changing assertion order to 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
[2021-03-12 18:56:59,359 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-03-12 18:56:59,361 WARN  L261         TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 104 conjunts are in the unsatisfiable core
[2021-03-12 18:56:59,363 INFO  L286         TraceCheckSpWp]: Computing forward predicates...