/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/ring_2w1r-2.line820.bpl


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


This is Ultimate 0.2.2-wip.dk.por-optimizations-5c708e3-m
[2022-10-04 03:00:53,006 INFO  L177        SettingsManager]: Resetting all preferences to default values...
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[2022-10-04 03:00:53,078 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/gemcutter/NewStatesSleep-VarAbsGlobalSyntactic.epf
[2022-10-04 03:00:53,103 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-10-04 03:00:53,104 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-10-04 03:00:53,104 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-10-04 03:00:53,104 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-10-04 03:00:53,105 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-10-04 03:00:53,105 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-10-04 03:00:53,106 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-10-04 03:00:53,106 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-10-04 03:00:53,106 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-10-04 03:00:53,106 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-10-04 03:00:53,106 INFO  L138        SettingsManager]:  * sizeof long=4
[2022-10-04 03:00:53,106 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-10-04 03:00:53,106 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2022-10-04 03:00:53,107 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-10-04 03:00:53,107 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-10-04 03:00:53,107 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-10-04 03:00:53,107 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-10-04 03:00:53,107 INFO  L138        SettingsManager]:  * sizeof long double=12
[2022-10-04 03:00:53,107 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-10-04 03:00:53,108 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2022-10-04 03:00:53,108 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-10-04 03:00:53,108 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-10-04 03:00:53,108 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-10-04 03:00:53,108 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2022-10-04 03:00:53,108 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-10-04 03:00:53,108 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-10-04 03:00:53,109 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-10-04 03:00:53,109 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-10-04 03:00:53,109 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-10-04 03:00:53,109 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-10-04 03:00:53,109 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-10-04 03:00:53,109 INFO  L138        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2022-10-04 03:00:53,110 INFO  L138        SettingsManager]:  * Abstraction used for commutativity in POR=VARIABLES_GLOBAL
[2022-10-04 03:00:53,110 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA
[2022-10-04 03:00:53,110 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-10-04 03:00:53,110 INFO  L138        SettingsManager]:  * CEGAR restart behaviour=ONE_CEGAR_PER_ERROR_LOCATION
[2022-10-04 03:00:53,110 INFO  L138        SettingsManager]:  * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES
[2022-10-04 03:00:53,110 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-10-04 03:00:53,110 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2022-10-04 03:00:53,332 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-10-04 03:00:53,350 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-10-04 03:00:53,352 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-10-04 03:00:53,353 INFO  L271        PluginConnector]: Initializing Boogie PL CUP Parser...
[2022-10-04 03:00:53,354 INFO  L275        PluginConnector]: Boogie PL CUP Parser initialized
[2022-10-04 03:00:53,355 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/ring_2w1r-2.line820.bpl
[2022-10-04 03:00:53,356 INFO  L110           BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/ring_2w1r-2.line820.bpl'
[2022-10-04 03:00:53,409 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-10-04 03:00:53,410 INFO  L131        ToolchainWalker]: Walking toolchain with 3 elements.
[2022-10-04 03:00:53,412 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-10-04 03:00:53,413 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-10-04 03:00:53,413 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-10-04 03:00:53,427 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ring_2w1r-2.line820.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 03:00:53" (1/1) ...
[2022-10-04 03:00:53,428 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ring_2w1r-2.line820.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 03:00:53" (1/1) ...
[2022-10-04 03:00:53,455 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ring_2w1r-2.line820.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 03:00:53" (1/1) ...
[2022-10-04 03:00:53,456 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ring_2w1r-2.line820.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 03:00:53" (1/1) ...
[2022-10-04 03:00:53,480 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ring_2w1r-2.line820.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 03:00:53" (1/1) ...
[2022-10-04 03:00:53,485 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ring_2w1r-2.line820.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 03:00:53" (1/1) ...
[2022-10-04 03:00:53,489 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ring_2w1r-2.line820.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 03:00:53" (1/1) ...
[2022-10-04 03:00:53,496 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-10-04 03:00:53,501 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-10-04 03:00:53,501 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-10-04 03:00:53,502 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-10-04 03:00:53,507 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ring_2w1r-2.line820.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 03:00:53" (1/1) ...
[2022-10-04 03:00:53,514 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-10-04 03:00:53,521 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-10-04 03:00:53,539 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)
[2022-10-04 03:00:53,558 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
[2022-10-04 03:00:53,588 INFO  L130     BoogieDeclarations]: Found specification of procedure reader_two
[2022-10-04 03:00:53,588 INFO  L138     BoogieDeclarations]: Found implementation of procedure reader_two
[2022-10-04 03:00:53,588 INFO  L130     BoogieDeclarations]: Found specification of procedure writer_fn
[2022-10-04 03:00:53,589 INFO  L138     BoogieDeclarations]: Found implementation of procedure writer_fn
[2022-10-04 03:00:53,589 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-10-04 03:00:53,589 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-10-04 03:00:53,591 WARN  L208             CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement
[2022-10-04 03:00:53,763 INFO  L234             CfgBuilder]: Building ICFG
[2022-10-04 03:00:53,764 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-10-04 03:00:54,343 INFO  L275             CfgBuilder]: Performing block encoding
[2022-10-04 03:00:54,359 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-10-04 03:00:54,359 INFO  L299             CfgBuilder]: Removed 6 assume(true) statements.
[2022-10-04 03:00:54,362 INFO  L202        PluginConnector]: Adding new model ring_2w1r-2.line820.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 03:00:54 BoogieIcfgContainer
[2022-10-04 03:00:54,362 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-10-04 03:00:54,364 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-10-04 03:00:54,364 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-10-04 03:00:54,368 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-10-04 03:00:54,369 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ring_2w1r-2.line820.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 03:00:53" (1/2) ...
[2022-10-04 03:00:54,370 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47ca33d1 and model type ring_2w1r-2.line820.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.10 03:00:54, skipping insertion in model container
[2022-10-04 03:00:54,370 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ring_2w1r-2.line820.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 03:00:54" (2/2) ...
[2022-10-04 03:00:54,371 INFO  L112   eAbstractionObserver]: Analyzing ICFG ring_2w1r-2.line820.bpl
[2022-10-04 03:00:54,379 WARN  L145   ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program
[2022-10-04 03:00:54,388 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-10-04 03:00:54,388 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-10-04 03:00:54,389 INFO  L515   ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2022-10-04 03:00:54,545 INFO  L144    ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions.
[2022-10-04 03:00:54,618 INFO  L100   denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2022-10-04 03:00:54,618 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000
[2022-10-04 03:00:54,620 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-10-04 03:00:54,627 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)
[2022-10-04 03:00:54,655 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
[2022-10-04 03:00:54,683 INFO  L158   artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations.
[2022-10-04 03:00:54,695 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0ASSERT_VIOLATIONASSERT ========
[2022-10-04 03:00:54,708 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;@1a842cd6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2022-10-04 03:00:54,708 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-10-04 03:01:00,018 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] ===
[2022-10-04 03:01:00,024 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-10-04 03:01:00,024 INFO  L85        PathProgramCache]: Analyzing trace with hash 1617797536, now seen corresponding path program 1 times
[2022-10-04 03:01:00,033 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-10-04 03:01:00,034 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14960490]
[2022-10-04 03:01:00,034 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-10-04 03:01:00,035 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-10-04 03:01:00,434 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-10-04 03:01:00,724 INFO  L134       CoverageAnalysis]: Checked inductivity of 298 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked.
[2022-10-04 03:01:00,725 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-10-04 03:01:00,725 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14960490]
[2022-10-04 03:01:00,726 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14960490] provided 1 perfect and 0 imperfect interpolant sequences
[2022-10-04 03:01:00,726 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-10-04 03:01:00,726 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-10-04 03:01:00,727 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730338827]
[2022-10-04 03:01:00,728 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-10-04 03:01:00,748 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-10-04 03:01:00,749 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-10-04 03:01:00,804 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-10-04 03:01:00,805 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-10-04 03:01:00,817 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 03:01:00,824 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2022-10-04 03:01:00,826 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 152.0) internal successors, (304), 2 states have internal predecessors, (304), 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)
[2022-10-04 03:01:00,826 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 03:01:00,862 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 03:01:00,862 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-10-04 03:01:00,862 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] ===
[2022-10-04 03:01:00,866 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-10-04 03:01:00,866 INFO  L85        PathProgramCache]: Analyzing trace with hash -272761935, now seen corresponding path program 1 times
[2022-10-04 03:01:00,867 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-10-04 03:01:00,867 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383552798]
[2022-10-04 03:01:00,867 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-10-04 03:01:00,867 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-10-04 03:01:00,935 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-10-04 03:01:01,131 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-10-04 03:01:01,131 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-10-04 03:01:01,132 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383552798]
[2022-10-04 03:01:01,132 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383552798] provided 1 perfect and 0 imperfect interpolant sequences
[2022-10-04 03:01:01,132 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-10-04 03:01:01,132 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2022-10-04 03:01:01,133 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954834426]
[2022-10-04 03:01:01,133 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-10-04 03:01:01,134 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2022-10-04 03:01:01,134 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-10-04 03:01:01,135 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2022-10-04 03:01:01,135 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90
[2022-10-04 03:01:01,139 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 03:01:01,141 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2022-10-04 03:01:01,141 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 10 states, 9 states have (on average 17.333333333333332) internal successors, (156), 10 states have internal predecessors, (156), 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)
[2022-10-04 03:01:01,142 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 03:01:01,142 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 03:01:11,408 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 03:01:11,408 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2022-10-04 03:01:11,409 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-10-04 03:01:11,409 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] ===
[2022-10-04 03:01:11,409 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-10-04 03:01:11,410 INFO  L85        PathProgramCache]: Analyzing trace with hash 420942202, now seen corresponding path program 1 times
[2022-10-04 03:01:11,410 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-10-04 03:01:11,410 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544080623]
[2022-10-04 03:01:11,410 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-10-04 03:01:11,411 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-10-04 03:01:11,464 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-10-04 03:01:11,538 INFO  L134       CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-10-04 03:01:11,538 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-10-04 03:01:11,538 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544080623]
[2022-10-04 03:01:11,539 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544080623] provided 1 perfect and 0 imperfect interpolant sequences
[2022-10-04 03:01:11,539 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-10-04 03:01:11,539 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-10-04 03:01:11,539 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3593476]
[2022-10-04 03:01:11,539 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-10-04 03:01:11,540 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-10-04 03:01:11,540 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-10-04 03:01:11,540 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-10-04 03:01:11,541 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-10-04 03:01:11,541 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 03:01:11,541 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2022-10-04 03:01:11,542 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 107.33333333333333) internal successors, (322), 3 states have internal predecessors, (322), 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)
[2022-10-04 03:01:11,542 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 03:01:11,542 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. 
[2022-10-04 03:01:11,542 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 03:01:22,151 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 03:01:22,152 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2022-10-04 03:01:22,152 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 03:01:22,152 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-10-04 03:01:22,153 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] ===
[2022-10-04 03:01:22,153 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-10-04 03:01:22,153 INFO  L85        PathProgramCache]: Analyzing trace with hash 2055311811, now seen corresponding path program 1 times
[2022-10-04 03:01:22,154 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-10-04 03:01:22,154 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458528874]
[2022-10-04 03:01:22,154 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-10-04 03:01:22,154 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-10-04 03:01:22,224 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-10-04 03:01:22,521 INFO  L134       CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2022-10-04 03:01:22,521 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-10-04 03:01:22,521 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458528874]
[2022-10-04 03:01:22,522 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458528874] provided 0 perfect and 1 imperfect interpolant sequences
[2022-10-04 03:01:22,525 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697412441]
[2022-10-04 03:01:22,526 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-10-04 03:01:22,526 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-10-04 03:01:22,526 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-10-04 03:01:22,528 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)
[2022-10-04 03:01:22,530 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2022-10-04 03:01:22,753 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-10-04 03:01:22,762 INFO  L263         TraceCheckSpWp]: Trace formula consists of 792 conjuncts, 27 conjunts are in the unsatisfiable core
[2022-10-04 03:01:22,789 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-10-04 03:01:23,116 INFO  L356             Elim1Store]: treesize reduction 15, result has 25.0 percent of original size
[2022-10-04 03:01:23,119 INFO  L390             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14
[2022-10-04 03:01:23,317 INFO  L134       CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2022-10-04 03:01:23,318 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-10-04 03:01:23,698 INFO  L356             Elim1Store]: treesize reduction 5, result has 37.5 percent of original size
[2022-10-04 03:01:23,700 INFO  L390             Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 11
[2022-10-04 03:01:23,718 INFO  L134       CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2022-10-04 03:01:23,721 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697412441] provided 0 perfect and 2 imperfect interpolant sequences
[2022-10-04 03:01:23,725 INFO  L184   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-10-04 03:01:23,726 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 12] total 22
[2022-10-04 03:01:23,726 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423730730]
[2022-10-04 03:01:23,726 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-10-04 03:01:23,727 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 23 states
[2022-10-04 03:01:23,727 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-10-04 03:01:23,728 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2022-10-04 03:01:23,730 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=461, Unknown=0, NotChecked=0, Total=506
[2022-10-04 03:01:23,730 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 03:01:23,731 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2022-10-04 03:01:23,732 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 23 states, 22 states have (on average 23.181818181818183) internal successors, (510), 23 states have internal predecessors, (510), 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)
[2022-10-04 03:01:23,732 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 03:01:23,732 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. 
[2022-10-04 03:01:23,732 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 03:01:23,733 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 03:01:49,187 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 03:01:49,188 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2022-10-04 03:01:49,188 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 03:01:49,188 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. 
[2022-10-04 03:01:49,207 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0
[2022-10-04 03:01:49,391 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,SelfDestructingSolverStorable3
[2022-10-04 03:01:49,392 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] ===
[2022-10-04 03:01:49,392 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-10-04 03:01:49,393 INFO  L85        PathProgramCache]: Analyzing trace with hash -2077376884, now seen corresponding path program 1 times
[2022-10-04 03:01:49,393 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-10-04 03:01:49,393 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738601242]
[2022-10-04 03:01:49,393 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-10-04 03:01:49,393 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-10-04 03:01:49,481 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-10-04 03:01:49,613 INFO  L134       CoverageAnalysis]: Checked inductivity of 422 backedges. 304 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked.
[2022-10-04 03:01:49,614 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-10-04 03:01:49,614 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738601242]
[2022-10-04 03:01:49,614 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738601242] provided 1 perfect and 0 imperfect interpolant sequences
[2022-10-04 03:01:49,614 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-10-04 03:01:49,614 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-10-04 03:01:49,614 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489171484]
[2022-10-04 03:01:49,615 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-10-04 03:01:49,615 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-10-04 03:01:49,615 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-10-04 03:01:49,616 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-10-04 03:01:49,616 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2022-10-04 03:01:49,617 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 03:01:49,617 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2022-10-04 03:01:49,618 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 113.25) internal successors, (453), 4 states have internal predecessors, (453), 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)
[2022-10-04 03:01:49,618 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 03:01:49,618 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. 
[2022-10-04 03:01:49,618 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 03:01:49,618 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 47 states. 
[2022-10-04 03:01:49,619 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 03:02:16,500 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 03:02:16,500 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2022-10-04 03:02:16,501 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 03:02:16,501 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. 
[2022-10-04 03:02:16,501 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-10-04 03:02:16,501 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2022-10-04 03:02:16,501 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] ===
[2022-10-04 03:02:16,502 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-10-04 03:02:16,502 INFO  L85        PathProgramCache]: Analyzing trace with hash -1314298916, now seen corresponding path program 1 times
[2022-10-04 03:02:16,502 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-10-04 03:02:16,502 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109664570]
[2022-10-04 03:02:16,502 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-10-04 03:02:16,502 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-10-04 03:02:16,582 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-10-04 03:02:16,756 INFO  L134       CoverageAnalysis]: Checked inductivity of 423 backedges. 234 proven. 2 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked.
[2022-10-04 03:02:16,758 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-10-04 03:02:16,758 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109664570]
[2022-10-04 03:02:16,758 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109664570] provided 0 perfect and 1 imperfect interpolant sequences
[2022-10-04 03:02:16,758 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749812927]
[2022-10-04 03:02:16,758 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-10-04 03:02:16,759 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-10-04 03:02:16,759 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-10-04 03:02:16,760 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)
[2022-10-04 03:02:16,763 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2022-10-04 03:02:17,027 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-10-04 03:02:17,035 INFO  L263         TraceCheckSpWp]: Trace formula consists of 1313 conjuncts, 3 conjunts are in the unsatisfiable core
[2022-10-04 03:02:17,045 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-10-04 03:02:17,618 INFO  L134       CoverageAnalysis]: Checked inductivity of 423 backedges. 234 proven. 2 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked.
[2022-10-04 03:02:17,619 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-10-04 03:02:18,093 INFO  L134       CoverageAnalysis]: Checked inductivity of 423 backedges. 234 proven. 2 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked.
[2022-10-04 03:02:18,093 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749812927] provided 0 perfect and 2 imperfect interpolant sequences
[2022-10-04 03:02:18,094 INFO  L184   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-10-04 03:02:18,094 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7
[2022-10-04 03:02:18,097 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240911242]
[2022-10-04 03:02:18,097 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-10-04 03:02:18,098 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2022-10-04 03:02:18,099 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-10-04 03:02:18,099 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2022-10-04 03:02:18,099 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42
[2022-10-04 03:02:18,100 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 03:02:18,100 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2022-10-04 03:02:18,101 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 135.0) internal successors, (945), 7 states have internal predecessors, (945), 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)
[2022-10-04 03:02:18,101 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 03:02:18,101 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. 
[2022-10-04 03:02:18,101 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 03:02:18,101 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 47 states. 
[2022-10-04 03:02:18,102 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. 
[2022-10-04 03:02:18,102 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 03:03:18,770 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 03:03:18,770 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2022-10-04 03:03:18,770 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 03:03:18,770 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. 
[2022-10-04 03:03:18,770 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-10-04 03:03:18,771 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2022-10-04 03:03:18,790 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0
[2022-10-04 03:03:18,971 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-10-04 03:03:18,972 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT] ===
[2022-10-04 03:03:18,973 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-10-04 03:03:18,973 INFO  L85        PathProgramCache]: Analyzing trace with hash 662928210, now seen corresponding path program 2 times
[2022-10-04 03:03:18,973 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-10-04 03:03:18,974 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817108925]
[2022-10-04 03:03:18,974 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-10-04 03:03:18,974 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-10-04 03:03:19,371 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-10-04 03:03:19,744 INFO  L134       CoverageAnalysis]: Checked inductivity of 1206 backedges. 500 proven. 6 refuted. 0 times theorem prover too weak. 700 trivial. 0 not checked.
[2022-10-04 03:03:19,744 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-10-04 03:03:19,744 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817108925]
[2022-10-04 03:03:19,744 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817108925] provided 0 perfect and 1 imperfect interpolant sequences
[2022-10-04 03:03:19,744 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38279974]
[2022-10-04 03:03:19,745 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-10-04 03:03:19,745 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-10-04 03:03:19,745 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-10-04 03:03:19,746 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)
[2022-10-04 03:03:19,779 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2022-10-04 03:03:20,150 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-10-04 03:03:20,150 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-10-04 03:03:20,161 INFO  L263         TraceCheckSpWp]: Trace formula consists of 2060 conjuncts, 6 conjunts are in the unsatisfiable core
[2022-10-04 03:03:20,179 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-10-04 03:03:20,981 INFO  L134       CoverageAnalysis]: Checked inductivity of 1206 backedges. 234 proven. 782 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked.
[2022-10-04 03:03:20,981 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-10-04 03:03:21,861 INFO  L134       CoverageAnalysis]: Checked inductivity of 1206 backedges. 234 proven. 782 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked.
[2022-10-04 03:03:21,861 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [38279974] provided 0 perfect and 2 imperfect interpolant sequences
[2022-10-04 03:03:21,861 INFO  L184   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-10-04 03:03:21,862 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 20
[2022-10-04 03:03:21,862 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723513961]
[2022-10-04 03:03:21,862 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-10-04 03:03:21,864 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 20 states
[2022-10-04 03:03:21,864 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-10-04 03:03:21,865 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2022-10-04 03:03:21,865 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380
[2022-10-04 03:03:21,865 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 03:03:21,866 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2022-10-04 03:03:21,868 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 20 states, 20 states have (on average 91.15) internal successors, (1823), 20 states have internal predecessors, (1823), 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)
[2022-10-04 03:03:21,868 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 03:03:21,868 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. 
[2022-10-04 03:03:21,868 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 03:03:21,868 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 47 states. 
[2022-10-04 03:03:21,868 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. 
[2022-10-04 03:03:21,868 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. 
[2022-10-04 03:03:21,868 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.