/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleepPersistentFixedOrder-Uncond-NoLbe-Random521.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2022/incr-decr23.bpl


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


This is Ultimate 0.2.1-2ce48c3f3f8970e6bfb7f04ced506932607c57fe-2ce48c3
[2021-10-25 07:56:42,127 INFO  L177        SettingsManager]: Resetting all preferences to default values...
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[2021-10-25 07:56:42,249 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleepPersistentFixedOrder-Uncond-NoLbe-Random521.epf
[2021-10-25 07:56:42,279 INFO  L113        SettingsManager]: Loading preferences was successful
[2021-10-25 07:56:42,280 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2021-10-25 07:56:42,280 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2021-10-25 07:56:42,280 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2021-10-25 07:56:42,282 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2021-10-25 07:56:42,282 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2021-10-25 07:56:42,282 INFO  L138        SettingsManager]:  * Use SBE=true
[2021-10-25 07:56:42,282 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2021-10-25 07:56:42,282 INFO  L138        SettingsManager]:  * sizeof long=4
[2021-10-25 07:56:42,282 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2021-10-25 07:56:42,283 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2021-10-25 07:56:42,283 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2021-10-25 07:56:42,284 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2021-10-25 07:56:42,284 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2021-10-25 07:56:42,284 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2021-10-25 07:56:42,284 INFO  L138        SettingsManager]:  * sizeof long double=12
[2021-10-25 07:56:42,284 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2021-10-25 07:56:42,284 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2021-10-25 07:56:42,284 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2021-10-25 07:56:42,284 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2021-10-25 07:56:42,285 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2021-10-25 07:56:42,285 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2021-10-25 07:56:42,285 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2021-10-25 07:56:42,285 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-10-25 07:56:42,285 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2021-10-25 07:56:42,285 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2021-10-25 07:56:42,285 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2021-10-25 07:56:42,285 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2021-10-25 07:56:42,286 INFO  L138        SettingsManager]:  * DFS Order used in POR=RANDOM
[2021-10-25 07:56:42,286 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2021-10-25 07:56:42,286 INFO  L138        SettingsManager]:  * Large block encoding in concurrent analysis=OFF
[2021-10-25 07:56:42,286 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA
[2021-10-25 07:56:42,286 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2021-10-25 07:56:42,287 INFO  L138        SettingsManager]:  * CEGAR restart behaviour=ONE_CEGAR_PER_THREAD_INSTANCE
[2021-10-25 07:56:42,287 INFO  L138        SettingsManager]:  * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER
[2021-10-25 07:56:42,287 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2021-10-25 07:56:42,287 INFO  L138        SettingsManager]:  * Random seed used by POR DFS order=521
[2021-10-25 07:56:42,287 INFO  L138        SettingsManager]:  * Use conditional POR in concurrent analysis=false
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2021-10-25 07:56:42,482 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2021-10-25 07:56:42,500 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2021-10-25 07:56:42,501 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2021-10-25 07:56:42,502 INFO  L271        PluginConnector]: Initializing Boogie PL CUP Parser...
[2021-10-25 07:56:42,503 INFO  L275        PluginConnector]: Boogie PL CUP Parser initialized
[2021-10-25 07:56:42,504 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/incr-decr23.bpl
[2021-10-25 07:56:42,504 INFO  L110           BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/incr-decr23.bpl'
[2021-10-25 07:56:42,540 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2021-10-25 07:56:42,541 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2021-10-25 07:56:42,544 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2021-10-25 07:56:42,545 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2021-10-25 07:56:42,545 INFO  L275        PluginConnector]: Boogie Procedure Inliner initialized
[2021-10-25 07:56:42,557 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "incr-decr23.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.10 07:56:42" (1/1) ...
[2021-10-25 07:56:42,570 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "incr-decr23.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.10 07:56:42" (1/1) ...
[2021-10-25 07:56:42,577 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2021-10-25 07:56:42,579 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2021-10-25 07:56:42,579 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2021-10-25 07:56:42,580 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2021-10-25 07:56:42,587 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "incr-decr23.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.10 07:56:42" (1/1) ...
[2021-10-25 07:56:42,587 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "incr-decr23.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.10 07:56:42" (1/1) ...
[2021-10-25 07:56:42,587 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "incr-decr23.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.10 07:56:42" (1/1) ...
[2021-10-25 07:56:42,589 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "incr-decr23.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.10 07:56:42" (1/1) ...
[2021-10-25 07:56:42,602 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "incr-decr23.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.10 07:56:42" (1/1) ...
[2021-10-25 07:56:42,604 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "incr-decr23.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.10 07:56:42" (1/1) ...
[2021-10-25 07:56:42,605 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "incr-decr23.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.10 07:56:42" (1/1) ...
[2021-10-25 07:56:42,606 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2021-10-25 07:56:42,607 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2021-10-25 07:56:42,607 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2021-10-25 07:56:42,607 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2021-10-25 07:56:42,612 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "incr-decr23.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.10 07:56:42" (1/1) ...
[2021-10-25 07:56:42,619 INFO  L170          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2021-10-25 07:56:42,627 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2021-10-25 07:56:42,753 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)
[2021-10-25 07:56:42,776 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
[2021-10-25 07:56:42,786 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration
[2021-10-25 07:56:42,786 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2021-10-25 07:56:42,786 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2021-10-25 07:56:42,786 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure Thread given in one single declaration
[2021-10-25 07:56:42,786 INFO  L130     BoogieDeclarations]: Found specification of procedure Thread
[2021-10-25 07:56:42,787 INFO  L138     BoogieDeclarations]: Found implementation of procedure Thread
[2021-10-25 07:56:42,787 WARN  L209             CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement
[2021-10-25 07:56:42,929 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2021-10-25 07:56:42,930 INFO  L299             CfgBuilder]: Removed 1 assume(true) statements.
[2021-10-25 07:56:42,931 INFO  L202        PluginConnector]: Adding new model incr-decr23.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:56:42 BoogieIcfgContainer
[2021-10-25 07:56:42,931 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2021-10-25 07:56:42,933 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2021-10-25 07:56:42,933 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2021-10-25 07:56:42,948 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2021-10-25 07:56:42,948 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "incr-decr23.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.10 07:56:42" (1/2) ...
[2021-10-25 07:56:42,949 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a4b6811 and model type incr-decr23.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 07:56:42, skipping insertion in model container
[2021-10-25 07:56:42,949 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "incr-decr23.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:56:42" (2/2) ...
[2021-10-25 07:56:42,950 INFO  L111   eAbstractionObserver]: Analyzing ICFG incr-decr23.bpl
[2021-10-25 07:56:42,954 WARN  L149   ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program
[2021-10-25 07:56:42,955 INFO  L204   ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2021-10-25 07:56:42,955 INFO  L163   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2021-10-25 07:56:42,955 INFO  L516   ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2021-10-25 07:56:43,388 INFO  L148    ThreadInstanceAdder]: Constructed 23 joinOtherThreadTransitions.
[2021-10-25 07:56:43,428 INFO  L170          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000
[2021-10-25 07:56:43,428 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2021-10-25 07:56:43,430 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)
[2021-10-25 07:56:43,447 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
[2021-10-25 07:56:43,459 INFO  L338      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ========
[2021-10-25 07:56:43,465 INFO  L339      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, mConcurrency=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, mLoopAccelerationTechnique=FAST_UPR
[2021-10-25 07:56:43,465 INFO  L340      AbstractCegarLoop]: Starting to check reachability of 24 error locations.
[2021-10-25 07:56:46,308 INFO  L402      AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 20 more)] ===
[2021-10-25 07:56:46,315 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-10-25 07:56:46,316 INFO  L82        PathProgramCache]: Analyzing trace with hash 997820507, now seen corresponding path program 1 times
[2021-10-25 07:56:46,323 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-25 07:56:46,323 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355793072]
[2021-10-25 07:56:46,323 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-25 07:56:46,324 INFO  L128          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-25 07:56:46,472 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-25 07:56:46,802 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2021-10-25 07:56:46,803 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-25 07:56:46,803 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355793072]
[2021-10-25 07:56:46,804 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355793072] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-25 07:56:46,804 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774312463]
[2021-10-25 07:56:46,804 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-25 07:56:46,805 INFO  L170          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-25 07:56:46,805 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2021-10-25 07:56:46,807 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)
[2021-10-25 07:56:46,817 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2021-10-25 07:56:47,125 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-25 07:56:47,131 INFO  L263         TraceCheckSpWp]: Trace formula consists of 1148 conjuncts, 19 conjunts are in the unsatisfiable core
[2021-10-25 07:56:47,139 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-10-25 07:56:47,795 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked.
[2021-10-25 07:56:47,796 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [774312463] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-25 07:56:47,796 INFO  L186   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-25 07:56:47,796 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2
[2021-10-25 07:56:47,798 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867403425]
[2021-10-25 07:56:47,804 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2021-10-25 07:56:47,804 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-25 07:56:47,813 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2021-10-25 07:56:47,815 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2021-10-25 07:56:47,815 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-10-25 07:56:47,816 INFO  L470      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-10-25 07:56:47,817 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-25 07:56:47,817 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-10-25 07:56:47,915 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2021-10-25 07:56:47,941 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2021-10-25 07:56:48,134 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0
[2021-10-25 07:56:48,135 INFO  L402      AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 20 more)] ===
[2021-10-25 07:56:48,135 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-10-25 07:56:48,135 INFO  L82        PathProgramCache]: Analyzing trace with hash -1089811267, now seen corresponding path program 1 times
[2021-10-25 07:56:48,136 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-25 07:56:48,136 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090755982]
[2021-10-25 07:56:48,136 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-25 07:56:48,136 INFO  L128          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-25 07:56:48,165 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-25 07:56:48,289 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2021-10-25 07:56:48,289 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-25 07:56:48,290 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090755982]
[2021-10-25 07:56:48,290 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090755982] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-25 07:56:48,291 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [201853755]
[2021-10-25 07:56:48,291 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-25 07:56:48,291 INFO  L170          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-25 07:56:48,291 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2021-10-25 07:56:48,292 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)
[2021-10-25 07:56:48,293 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2021-10-25 07:56:48,647 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-25 07:56:48,653 INFO  L263         TraceCheckSpWp]: Trace formula consists of 1152 conjuncts, 23 conjunts are in the unsatisfiable core
[2021-10-25 07:56:48,656 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-10-25 07:56:49,253 INFO  L134       CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2021-10-25 07:56:49,253 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [201853755] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-25 07:56:49,253 INFO  L186   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-25 07:56:49,254 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3
[2021-10-25 07:56:49,254 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829358978]
[2021-10-25 07:56:49,255 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2021-10-25 07:56:49,255 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-25 07:56:49,256 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2021-10-25 07:56:49,256 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2021-10-25 07:56:49,256 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-10-25 07:56:49,256 INFO  L470      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-10-25 07:56:49,256 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 5 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-25 07:56:49,257 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. 
[2021-10-25 07:56:49,257 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-10-25 07:56:49,420 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2021-10-25 07:56:49,420 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-10-25 07:56:49,450 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2021-10-25 07:56:49,634 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-25 07:56:49,635 INFO  L402      AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 20 more)] ===
[2021-10-25 07:56:49,635 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-10-25 07:56:49,636 INFO  L82        PathProgramCache]: Analyzing trace with hash 859962559, now seen corresponding path program 1 times
[2021-10-25 07:56:49,636 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-25 07:56:49,636 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299656323]
[2021-10-25 07:56:49,636 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-25 07:56:49,636 INFO  L128          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-25 07:56:49,672 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-25 07:56:49,824 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2021-10-25 07:56:49,826 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-25 07:56:49,826 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299656323]
[2021-10-25 07:56:49,826 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299656323] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-25 07:56:49,826 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392904062]
[2021-10-25 07:56:49,827 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-25 07:56:49,827 INFO  L170          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-25 07:56:49,827 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2021-10-25 07:56:49,828 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)
[2021-10-25 07:56:49,858 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2021-10-25 07:56:50,277 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-25 07:56:50,281 INFO  L263         TraceCheckSpWp]: Trace formula consists of 1160 conjuncts, 31 conjunts are in the unsatisfiable core
[2021-10-25 07:56:50,284 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-10-25 07:56:50,879 INFO  L134       CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2021-10-25 07:56:50,879 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392904062] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-25 07:56:50,880 INFO  L186   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-25 07:56:50,880 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4
[2021-10-25 07:56:50,880 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418658665]
[2021-10-25 07:56:50,880 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2021-10-25 07:56:50,881 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-25 07:56:50,881 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2021-10-25 07:56:50,881 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2021-10-25 07:56:50,881 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-10-25 07:56:50,881 INFO  L470      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-10-25 07:56:50,882 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-25 07:56:50,882 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. 
[2021-10-25 07:56:50,882 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2021-10-25 07:56:50,882 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2021-10-25 07:56:53,231 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2021-10-25 07:56:53,236 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2021-10-25 07:56:53,236 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2021-10-25 07:56:53,263 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2021-10-25 07:56:53,459 WARN  L452      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-25 07:56:53,460 INFO  L402      AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 20 more)] ===
[2021-10-25 07:56:53,461 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2021-10-25 07:56:53,461 INFO  L82        PathProgramCache]: Analyzing trace with hash 664862911, now seen corresponding path program 1 times
[2021-10-25 07:56:53,461 INFO  L121   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2021-10-25 07:56:53,461 INFO  L332   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141094850]
[2021-10-25 07:56:53,461 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-25 07:56:53,462 INFO  L128          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2021-10-25 07:56:53,481 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-25 07:56:53,624 INFO  L134       CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2021-10-25 07:56:53,624 INFO  L139   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2021-10-25 07:56:53,624 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141094850]
[2021-10-25 07:56:53,624 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141094850] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-25 07:56:53,624 INFO  L332   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [763003429]
[2021-10-25 07:56:53,624 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2021-10-25 07:56:53,625 INFO  L170          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2021-10-25 07:56:53,625 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2021-10-25 07:56:53,626 INFO  L229       MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2021-10-25 07:56:53,656 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2021-10-25 07:56:54,103 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2021-10-25 07:56:54,108 INFO  L263         TraceCheckSpWp]: Trace formula consists of 1164 conjuncts, 35 conjunts are in the unsatisfiable core
[2021-10-25 07:56:54,112 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2021-10-25 07:56:54,688 INFO  L134       CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2021-10-25 07:56:54,689 INFO  L160   FreeRefinementEngine]: IpTcStrategyModuleZ3 [763003429] provided 0 perfect and 1 imperfect interpolant sequences
[2021-10-25 07:56:54,689 INFO  L186   FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2021-10-25 07:56:54,689 INFO  L199   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5
[2021-10-25 07:56:54,689 INFO  L115   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075509827]
[2021-10-25 07:56:54,690 INFO  L546      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2021-10-25 07:56:54,690 INFO  L103   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2021-10-25 07:56:54,690 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2021-10-25 07:56:54,691 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2021-10-25 07:56:54,691 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2021-10-25 07:56:54,691 INFO  L470      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2021-10-25 07:56:54,691 INFO  L471      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)
[2021-10-25 07:56:54,691 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. 
[2021-10-25 07:56:54,691 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2021-10-25 07:56:54,691 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. 
[2021-10-25 07:56:54,691 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.