/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/gemcutter/NewStatesSleep-VarAbsGlobalSyntactic.epf -tc ../../../trunk/examples/toolchains/AutomizerBpl.xml -i ../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/chl-nzb-file-subst.wvr.line1553.bpl


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


This is Ultimate 0.2.2-wip.dk.por-optimizations-5c708e3-m
[2022-09-29 20:34:23,534 INFO  L177        SettingsManager]: Resetting all preferences to default values...
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[2022-09-29 20:34:23,617 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/gemcutter/NewStatesSleep-VarAbsGlobalSyntactic.epf
[2022-09-29 20:34:23,643 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-09-29 20:34:23,644 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-09-29 20:34:23,644 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-09-29 20:34:23,644 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-09-29 20:34:23,645 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-09-29 20:34:23,645 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-09-29 20:34:23,645 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-09-29 20:34:23,645 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-09-29 20:34:23,645 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-09-29 20:34:23,645 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-09-29 20:34:23,645 INFO  L138        SettingsManager]:  * sizeof long=4
[2022-09-29 20:34:23,646 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-09-29 20:34:23,646 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2022-09-29 20:34:23,646 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-09-29 20:34:23,646 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-09-29 20:34:23,646 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-09-29 20:34:23,646 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-09-29 20:34:23,646 INFO  L138        SettingsManager]:  * sizeof long double=12
[2022-09-29 20:34:23,646 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-09-29 20:34:23,646 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2022-09-29 20:34:23,647 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-09-29 20:34:23,647 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-09-29 20:34:23,647 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-09-29 20:34:23,647 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2022-09-29 20:34:23,647 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-09-29 20:34:23,647 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-09-29 20:34:23,647 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-09-29 20:34:23,647 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-09-29 20:34:23,648 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-09-29 20:34:23,648 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-09-29 20:34:23,648 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-09-29 20:34:23,648 INFO  L138        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2022-09-29 20:34:23,648 INFO  L138        SettingsManager]:  * Abstraction used for commutativity in POR=VARIABLES_GLOBAL
[2022-09-29 20:34:23,648 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA
[2022-09-29 20:34:23,648 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-09-29 20:34:23,648 INFO  L138        SettingsManager]:  * CEGAR restart behaviour=ONE_CEGAR_PER_ERROR_LOCATION
[2022-09-29 20:34:23,649 INFO  L138        SettingsManager]:  * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES
[2022-09-29 20:34:23,649 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-09-29 20:34:23,649 INFO  L138        SettingsManager]:  * Independence relation used for POR in concurrent analysis=SYNTACTIC
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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2022-09-29 20:34:23,867 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-09-29 20:34:23,899 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-09-29 20:34:23,902 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-09-29 20:34:23,903 INFO  L271        PluginConnector]: Initializing Boogie PL CUP Parser...
[2022-09-29 20:34:23,908 INFO  L275        PluginConnector]: Boogie PL CUP Parser initialized
[2022-09-29 20:34:23,909 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/chl-nzb-file-subst.wvr.line1553.bpl
[2022-09-29 20:34:23,910 INFO  L110           BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/chl-nzb-file-subst.wvr.line1553.bpl'
[2022-09-29 20:34:23,981 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-09-29 20:34:23,982 INFO  L131        ToolchainWalker]: Walking toolchain with 3 elements.
[2022-09-29 20:34:23,983 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-09-29 20:34:23,983 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-09-29 20:34:23,983 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-09-29 20:34:23,997 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "chl-nzb-file-subst.wvr.line1553.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 08:34:23" (1/1) ...
[2022-09-29 20:34:23,998 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "chl-nzb-file-subst.wvr.line1553.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 08:34:23" (1/1) ...
[2022-09-29 20:34:24,018 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "chl-nzb-file-subst.wvr.line1553.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 08:34:23" (1/1) ...
[2022-09-29 20:34:24,019 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "chl-nzb-file-subst.wvr.line1553.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 08:34:23" (1/1) ...
[2022-09-29 20:34:24,046 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "chl-nzb-file-subst.wvr.line1553.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 08:34:23" (1/1) ...
[2022-09-29 20:34:24,056 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "chl-nzb-file-subst.wvr.line1553.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 08:34:23" (1/1) ...
[2022-09-29 20:34:24,061 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "chl-nzb-file-subst.wvr.line1553.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 08:34:23" (1/1) ...
[2022-09-29 20:34:24,071 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-09-29 20:34:24,077 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-09-29 20:34:24,077 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-09-29 20:34:24,077 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-09-29 20:34:24,082 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "chl-nzb-file-subst.wvr.line1553.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 08:34:23" (1/1) ...
[2022-09-29 20:34:24,092 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-09-29 20:34:24,102 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-09-29 20:34:24,121 INFO  L229       MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2022-09-29 20:34:24,138 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2022-09-29 20:34:24,173 INFO  L130     BoogieDeclarations]: Found specification of procedure thread1
[2022-09-29 20:34:24,174 INFO  L138     BoogieDeclarations]: Found implementation of procedure thread1
[2022-09-29 20:34:24,174 INFO  L130     BoogieDeclarations]: Found specification of procedure thread2
[2022-09-29 20:34:24,174 INFO  L138     BoogieDeclarations]: Found implementation of procedure thread2
[2022-09-29 20:34:24,201 INFO  L130     BoogieDeclarations]: Found specification of procedure thread3
[2022-09-29 20:34:24,201 INFO  L138     BoogieDeclarations]: Found implementation of procedure thread3
[2022-09-29 20:34:24,201 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-09-29 20:34:24,201 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-09-29 20:34:24,204 WARN  L208             CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement
[2022-09-29 20:34:24,390 INFO  L234             CfgBuilder]: Building ICFG
[2022-09-29 20:34:24,392 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-09-29 20:34:25,383 INFO  L275             CfgBuilder]: Performing block encoding
[2022-09-29 20:34:25,408 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-09-29 20:34:25,409 INFO  L299             CfgBuilder]: Removed 6 assume(true) statements.
[2022-09-29 20:34:25,414 INFO  L202        PluginConnector]: Adding new model chl-nzb-file-subst.wvr.line1553.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.09 08:34:25 BoogieIcfgContainer
[2022-09-29 20:34:25,414 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-09-29 20:34:25,418 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-09-29 20:34:25,419 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-09-29 20:34:25,422 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-09-29 20:34:25,423 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "chl-nzb-file-subst.wvr.line1553.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 29.09 08:34:23" (1/2) ...
[2022-09-29 20:34:25,426 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ed34ba7 and model type chl-nzb-file-subst.wvr.line1553.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.09 08:34:25, skipping insertion in model container
[2022-09-29 20:34:25,426 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "chl-nzb-file-subst.wvr.line1553.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.09 08:34:25" (2/2) ...
[2022-09-29 20:34:25,430 INFO  L112   eAbstractionObserver]: Analyzing ICFG chl-nzb-file-subst.wvr.line1553.bpl
[2022-09-29 20:34:25,437 WARN  L145   ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program
[2022-09-29 20:34:25,446 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-09-29 20:34:25,446 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-09-29 20:34:25,446 INFO  L515   ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2022-09-29 20:34:25,688 INFO  L144    ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions.
[2022-09-29 20:34:25,759 INFO  L100   denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2022-09-29 20:34:25,760 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000
[2022-09-29 20:34:25,760 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-09-29 20:34:25,767 INFO  L229       MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null)
[2022-09-29 20:34:25,771 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process
[2022-09-29 20:34:25,800 INFO  L158   artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations.
[2022-09-29 20:34:25,807 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ========
[2022-09-29 20:34:25,814 INFO  L357      AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PARTIAL_ORDER_FA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@467ead25, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2022-09-29 20:34:25,814 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-09-29 20:34:26,124 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] ===
[2022-09-29 20:34:26,129 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-09-29 20:34:26,130 INFO  L85        PathProgramCache]: Analyzing trace with hash -1153280476, now seen corresponding path program 1 times
[2022-09-29 20:34:26,138 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-09-29 20:34:26,139 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059741141]
[2022-09-29 20:34:26,139 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-09-29 20:34:26,140 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-09-29 20:34:26,350 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-09-29 20:34:26,525 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-09-29 20:34:26,525 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-09-29 20:34:26,526 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059741141]
[2022-09-29 20:34:26,526 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059741141] provided 1 perfect and 0 imperfect interpolant sequences
[2022-09-29 20:34:26,526 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-09-29 20:34:26,527 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-09-29 20:34:26,540 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117681582]
[2022-09-29 20:34:26,541 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-09-29 20:34:26,550 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-09-29 20:34:26,550 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-09-29 20:34:26,580 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-09-29 20:34:26,582 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-09-29 20:34:26,584 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-09-29 20:34:26,590 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2022-09-29 20:34:26,592 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 179.5) internal successors, (359), 2 states have internal predecessors, (359), 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)
[2022-09-29 20:34:26,592 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-09-29 20:34:38,027 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-09-29 20:34:38,027 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-09-29 20:34:38,028 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] ===
[2022-09-29 20:34:38,028 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-09-29 20:34:38,029 INFO  L85        PathProgramCache]: Analyzing trace with hash 1633889865, now seen corresponding path program 1 times
[2022-09-29 20:34:38,029 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-09-29 20:34:38,029 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420277758]
[2022-09-29 20:34:38,029 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-09-29 20:34:38,030 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-09-29 20:34:38,179 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-09-29 20:34:38,298 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-09-29 20:34:38,298 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-09-29 20:34:38,299 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420277758]
[2022-09-29 20:34:38,299 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420277758] provided 1 perfect and 0 imperfect interpolant sequences
[2022-09-29 20:34:38,299 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-09-29 20:34:38,299 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-09-29 20:34:38,299 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728576493]
[2022-09-29 20:34:38,300 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-09-29 20:34:38,301 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-09-29 20:34:38,302 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-09-29 20:34:38,302 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-09-29 20:34:38,302 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2022-09-29 20:34:38,303 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-09-29 20:34:38,305 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2022-09-29 20:34:38,305 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 70.0) internal successors, (350), 5 states have internal predecessors, (350), 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)
[2022-09-29 20:34:38,306 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-09-29 20:34:38,306 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-09-29 20:34:44,798 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-09-29 20:34:44,798 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2022-09-29 20:34:44,799 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-09-29 20:34:44,799 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] ===
[2022-09-29 20:34:44,799 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-09-29 20:34:44,800 INFO  L85        PathProgramCache]: Analyzing trace with hash -741064795, now seen corresponding path program 1 times
[2022-09-29 20:34:44,800 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-09-29 20:34:44,800 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018603830]
[2022-09-29 20:34:44,800 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-09-29 20:34:44,801 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-09-29 20:34:44,870 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-09-29 20:34:44,979 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2022-09-29 20:34:44,979 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-09-29 20:34:44,980 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018603830]
[2022-09-29 20:34:44,980 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018603830] provided 0 perfect and 1 imperfect interpolant sequences
[2022-09-29 20:34:44,980 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494819394]
[2022-09-29 20:34:44,980 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-09-29 20:34:44,981 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-09-29 20:34:44,981 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-09-29 20:34:44,983 INFO  L229       MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-09-29 20:34:44,984 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2022-09-29 20:34:45,193 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-09-29 20:34:45,198 INFO  L263         TraceCheckSpWp]: Trace formula consists of 742 conjuncts, 6 conjunts are in the unsatisfiable core
[2022-09-29 20:34:45,215 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-09-29 20:34:45,355 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2022-09-29 20:34:45,356 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-09-29 20:34:45,456 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked.
[2022-09-29 20:34:45,457 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1494819394] provided 0 perfect and 2 imperfect interpolant sequences
[2022-09-29 20:34:45,458 INFO  L184   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-09-29 20:34:45,458 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15
[2022-09-29 20:34:45,459 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821513526]
[2022-09-29 20:34:45,459 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-09-29 20:34:45,461 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 15 states
[2022-09-29 20:34:45,461 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-09-29 20:34:45,461 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2022-09-29 20:34:45,463 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210
[2022-09-29 20:34:45,463 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-09-29 20:34:45,464 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2022-09-29 20:34:45,464 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 15 states, 15 states have (on average 30.0) internal successors, (450), 15 states have internal predecessors, (450), 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)
[2022-09-29 20:34:45,464 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-09-29 20:34:45,464 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2022-09-29 20:34:45,464 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-09-29 20:34:51,442 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-09-29 20:34:51,442 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2022-09-29 20:34:51,443 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2022-09-29 20:34:51,482 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2022-09-29 20:34:51,659 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2
[2022-09-29 20:34:51,660 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] ===
[2022-09-29 20:34:51,661 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-09-29 20:34:51,661 INFO  L85        PathProgramCache]: Analyzing trace with hash 188499045, now seen corresponding path program 2 times
[2022-09-29 20:34:51,661 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-09-29 20:34:51,662 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421423433]
[2022-09-29 20:34:51,662 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-09-29 20:34:51,662 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-09-29 20:34:51,760 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-09-29 20:34:51,906 INFO  L134       CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked.
[2022-09-29 20:34:51,906 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-09-29 20:34:51,906 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421423433]
[2022-09-29 20:34:51,906 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421423433] provided 0 perfect and 1 imperfect interpolant sequences
[2022-09-29 20:34:51,907 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [434840241]
[2022-09-29 20:34:51,907 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-09-29 20:34:51,907 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-09-29 20:34:51,907 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-09-29 20:34:51,909 INFO  L229       MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-09-29 20:34:51,935 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2022-09-29 20:34:52,128 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s)
[2022-09-29 20:34:52,128 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-09-29 20:34:52,132 INFO  L263         TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 7 conjunts are in the unsatisfiable core
[2022-09-29 20:34:52,140 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-09-29 20:34:52,265 INFO  L134       CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked.
[2022-09-29 20:34:52,265 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2022-09-29 20:34:52,265 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [434840241] provided 1 perfect and 0 imperfect interpolant sequences
[2022-09-29 20:34:52,265 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2022-09-29 20:34:52,266 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15
[2022-09-29 20:34:52,266 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350356546]
[2022-09-29 20:34:52,266 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-09-29 20:34:52,267 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2022-09-29 20:34:52,267 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-09-29 20:34:52,267 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2022-09-29 20:34:52,268 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210
[2022-09-29 20:34:52,268 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-09-29 20:34:52,269 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2022-09-29 20:34:52,269 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 64.83333333333333) internal successors, (389), 6 states have internal predecessors, (389), 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)
[2022-09-29 20:34:52,270 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-09-29 20:34:52,270 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2022-09-29 20:34:52,270 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. 
[2022-09-29 20:34:52,270 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-09-29 20:34:55,028 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-09-29 20:34:55,028 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2022-09-29 20:34:55,029 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2022-09-29 20:34:55,029 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2022-09-29 20:34:55,048 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2022-09-29 20:34:55,231 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-09-29 20:34:55,232 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] ===
[2022-09-29 20:34:55,232 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-09-29 20:34:55,233 INFO  L85        PathProgramCache]: Analyzing trace with hash 114997116, now seen corresponding path program 1 times
[2022-09-29 20:34:55,233 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-09-29 20:34:55,233 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558268783]
[2022-09-29 20:34:55,233 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-09-29 20:34:55,233 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-09-29 20:34:55,303 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-09-29 20:34:55,447 INFO  L134       CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked.
[2022-09-29 20:34:55,448 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-09-29 20:34:55,448 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558268783]
[2022-09-29 20:34:55,448 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558268783] provided 0 perfect and 1 imperfect interpolant sequences
[2022-09-29 20:34:55,448 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498542641]
[2022-09-29 20:34:55,448 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-09-29 20:34:55,449 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-09-29 20:34:55,449 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-09-29 20:34:55,450 INFO  L229       MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-09-29 20:34:55,451 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2022-09-29 20:34:55,646 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-09-29 20:34:55,651 INFO  L263         TraceCheckSpWp]: Trace formula consists of 869 conjuncts, 10 conjunts are in the unsatisfiable core
[2022-09-29 20:34:55,658 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-09-29 20:34:55,875 INFO  L134       CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked.
[2022-09-29 20:34:55,875 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-09-29 20:34:56,046 INFO  L134       CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked.
[2022-09-29 20:34:56,046 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498542641] provided 0 perfect and 2 imperfect interpolant sequences
[2022-09-29 20:34:56,046 INFO  L184   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-09-29 20:34:56,047 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22
[2022-09-29 20:34:56,047 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440603971]
[2022-09-29 20:34:56,047 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-09-29 20:34:56,048 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 22 states
[2022-09-29 20:34:56,048 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-09-29 20:34:56,049 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2022-09-29 20:34:56,049 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462
[2022-09-29 20:34:56,049 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-09-29 20:34:56,050 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2022-09-29 20:34:56,051 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 22 states, 22 states have (on average 21.818181818181817) internal successors, (480), 22 states have internal predecessors, (480), 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)
[2022-09-29 20:34:56,051 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-09-29 20:34:56,051 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2022-09-29 20:34:56,051 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. 
[2022-09-29 20:34:56,051 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. 
[2022-09-29 20:34:56,051 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-09-29 20:34:59,151 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-09-29 20:34:59,152 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2022-09-29 20:34:59,152 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2022-09-29 20:34:59,152 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2022-09-29 20:34:59,152 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. 
[2022-09-29 20:34:59,170 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0
[2022-09-29 20:34:59,355 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-09-29 20:34:59,356 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] ===
[2022-09-29 20:34:59,356 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-09-29 20:34:59,356 INFO  L85        PathProgramCache]: Analyzing trace with hash 263416892, now seen corresponding path program 2 times
[2022-09-29 20:34:59,357 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-09-29 20:34:59,357 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233834869]
[2022-09-29 20:34:59,357 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-09-29 20:34:59,357 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-09-29 20:34:59,461 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-09-29 20:34:59,548 INFO  L134       CoverageAnalysis]: Checked inductivity of 405 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 405 trivial. 0 not checked.
[2022-09-29 20:34:59,548 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-09-29 20:34:59,548 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233834869]
[2022-09-29 20:34:59,549 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233834869] provided 1 perfect and 0 imperfect interpolant sequences
[2022-09-29 20:34:59,549 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-09-29 20:34:59,549 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-09-29 20:34:59,550 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598907495]
[2022-09-29 20:34:59,550 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-09-29 20:34:59,552 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-09-29 20:34:59,552 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-09-29 20:34:59,552 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-09-29 20:34:59,553 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-09-29 20:34:59,553 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-09-29 20:34:59,554 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2022-09-29 20:34:59,554 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 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)
[2022-09-29 20:34:59,554 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-09-29 20:34:59,554 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2022-09-29 20:34:59,554 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. 
[2022-09-29 20:34:59,555 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. 
[2022-09-29 20:34:59,555 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. 
[2022-09-29 20:34:59,555 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-09-29 20:35:43,940 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-09-29 20:35:43,941 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2022-09-29 20:35:43,941 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2022-09-29 20:35:43,941 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2022-09-29 20:35:43,941 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. 
[2022-09-29 20:35:43,941 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-09-29 20:35:43,941 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2022-09-29 20:35:43,942 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] ===
[2022-09-29 20:35:43,942 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-09-29 20:35:43,942 INFO  L85        PathProgramCache]: Analyzing trace with hash 310531314, now seen corresponding path program 1 times
[2022-09-29 20:35:43,942 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-09-29 20:35:43,943 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034794717]
[2022-09-29 20:35:43,943 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-09-29 20:35:43,943 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-09-29 20:35:44,078 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-09-29 20:35:44,248 INFO  L134       CoverageAnalysis]: Checked inductivity of 406 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 405 trivial. 0 not checked.
[2022-09-29 20:35:44,248 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-09-29 20:35:44,248 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034794717]
[2022-09-29 20:35:44,248 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034794717] provided 1 perfect and 0 imperfect interpolant sequences
[2022-09-29 20:35:44,249 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-09-29 20:35:44,249 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2022-09-29 20:35:44,249 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682430530]
[2022-09-29 20:35:44,249 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-09-29 20:35:44,250 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2022-09-29 20:35:44,250 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-09-29 20:35:44,250 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2022-09-29 20:35:44,251 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2022-09-29 20:35:44,251 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-09-29 20:35:44,252 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2022-09-29 20:35:44,252 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 74.28571428571429) internal successors, (520), 7 states have internal predecessors, (520), 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)
[2022-09-29 20:35:44,252 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-09-29 20:35:44,252 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2022-09-29 20:35:44,252 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. 
[2022-09-29 20:35:44,253 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. 
[2022-09-29 20:35:44,253 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. 
[2022-09-29 20:35:44,253 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-09-29 20:35:44,253 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-09-29 20:36:12,098 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-09-29 20:36:12,098 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2022-09-29 20:36:12,098 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2022-09-29 20:36:12,098 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2022-09-29 20:36:12,099 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. 
[2022-09-29 20:36:12,099 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-09-29 20:36:12,099 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2022-09-29 20:36:12,099 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2022-09-29 20:36:12,100 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] ===
[2022-09-29 20:36:12,100 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-09-29 20:36:12,100 INFO  L85        PathProgramCache]: Analyzing trace with hash -615214445, now seen corresponding path program 1 times
[2022-09-29 20:36:12,100 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-09-29 20:36:12,101 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657294206]
[2022-09-29 20:36:12,101 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-09-29 20:36:12,101 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-09-29 20:36:12,158 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-09-29 20:36:12,261 INFO  L134       CoverageAnalysis]: Checked inductivity of 406 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 405 trivial. 0 not checked.
[2022-09-29 20:36:12,262 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-09-29 20:36:12,262 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657294206]
[2022-09-29 20:36:12,262 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657294206] provided 1 perfect and 0 imperfect interpolant sequences
[2022-09-29 20:36:12,263 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-09-29 20:36:12,263 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-09-29 20:36:12,263 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151856581]
[2022-09-29 20:36:12,264 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-09-29 20:36:12,264 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2022-09-29 20:36:12,265 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-09-29 20:36:12,265 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2022-09-29 20:36:12,265 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2022-09-29 20:36:12,265 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-09-29 20:36:12,266 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2022-09-29 20:36:12,267 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 5 states have (on average 102.2) internal successors, (511), 5 states have internal predecessors, (511), 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)
[2022-09-29 20:36:12,267 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-09-29 20:36:12,267 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2022-09-29 20:36:12,267 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. 
[2022-09-29 20:36:12,267 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. 
[2022-09-29 20:36:12,267 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. 
[2022-09-29 20:36:12,267 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-09-29 20:36:12,267 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. 
[2022-09-29 20:36:12,267 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-09-29 20:36:40,438 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-09-29 20:36:40,438 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2022-09-29 20:36:40,439 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2022-09-29 20:36:40,439 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2022-09-29 20:36:40,439 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. 
[2022-09-29 20:36:40,439 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-09-29 20:36:40,439 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2022-09-29 20:36:40,439 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2022-09-29 20:36:40,440 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7
[2022-09-29 20:36:40,440 INFO  L420      AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] ===
[2022-09-29 20:36:40,440 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-09-29 20:36:40,441 INFO  L85        PathProgramCache]: Analyzing trace with hash -1650609454, now seen corresponding path program 1 times
[2022-09-29 20:36:40,441 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-09-29 20:36:40,441 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375859523]
[2022-09-29 20:36:40,441 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-09-29 20:36:40,441 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-09-29 20:36:40,522 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-09-29 20:36:40,653 INFO  L134       CoverageAnalysis]: Checked inductivity of 406 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 405 trivial. 0 not checked.
[2022-09-29 20:36:40,654 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-09-29 20:36:40,656 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375859523]
[2022-09-29 20:36:40,659 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375859523] provided 1 perfect and 0 imperfect interpolant sequences
[2022-09-29 20:36:40,659 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-09-29 20:36:40,659 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2022-09-29 20:36:40,659 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340484490]
[2022-09-29 20:36:40,659 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-09-29 20:36:40,660 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2022-09-29 20:36:40,660 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-09-29 20:36:40,661 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2022-09-29 20:36:40,662 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2022-09-29 20:36:40,662 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-09-29 20:36:40,662 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2022-09-29 20:36:40,663 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 6 states have (on average 83.66666666666667) internal successors, (502), 6 states have internal predecessors, (502), 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)
[2022-09-29 20:36:40,663 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-09-29 20:36:40,663 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2022-09-29 20:36:40,663 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. 
[2022-09-29 20:36:40,664 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. 
[2022-09-29 20:36:40,664 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. 
[2022-09-29 20:36:40,664 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-09-29 20:36:40,664 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. 
[2022-09-29 20:36:40,664 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. 
[2022-09-29 20:36:40,664 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-09-29 20:37:03,368 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-09-29 20:37:03,368 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2022-09-29 20:37:03,368 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2022-09-29 20:37:03,368 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2022-09-29 20:37:03,369 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. 
[2022-09-29 20:37:03,369 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-09-29 20:37:03,369 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2022-09-29 20:37:03,369 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2022-09-29 20:37:03,369 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2022-09-29 20:37:03,370 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8
[2022-09-29 20:37:03,370 INFO  L420      AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] ===
[2022-09-29 20:37:03,370 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-09-29 20:37:03,370 INFO  L85        PathProgramCache]: Analyzing trace with hash 2125903273, now seen corresponding path program 1 times
[2022-09-29 20:37:03,370 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-09-29 20:37:03,370 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375682621]
[2022-09-29 20:37:03,371 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-09-29 20:37:03,371 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-09-29 20:37:03,484 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-09-29 20:37:03,733 INFO  L134       CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked.
[2022-09-29 20:37:03,733 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-09-29 20:37:03,733 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375682621]
[2022-09-29 20:37:03,733 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375682621] provided 1 perfect and 0 imperfect interpolant sequences
[2022-09-29 20:37:03,733 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-09-29 20:37:03,733 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7
[2022-09-29 20:37:03,734 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418390802]
[2022-09-29 20:37:03,734 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-09-29 20:37:03,734 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2022-09-29 20:37:03,734 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-09-29 20:37:03,737 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2022-09-29 20:37:03,743 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2022-09-29 20:37:03,744 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-09-29 20:37:03,744 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2022-09-29 20:37:03,745 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 8 states, 7 states have (on average 68.57142857142857) internal successors, (480), 8 states have internal predecessors, (480), 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)
[2022-09-29 20:37:03,745 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-09-29 20:37:03,745 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2022-09-29 20:37:03,745 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. 
[2022-09-29 20:37:03,746 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. 
[2022-09-29 20:37:03,746 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 17 states. 
[2022-09-29 20:37:03,746 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-09-29 20:37:03,746 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. 
[2022-09-29 20:37:03,746 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. 
[2022-09-29 20:37:03,746 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. 
[2022-09-29 20:37:03,746 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.