/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.line585.bpl


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


This is Ultimate 0.2.2-wip.dk.por-optimizations-5c708e3-m
[2022-10-04 02:59:04,796 INFO  L177        SettingsManager]: Resetting all preferences to default values...
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[2022-10-04 02:59:04,840 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2022-10-04 02:59:04,841 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
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[2022-10-04 02:59:04,847 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2022-10-04 02:59:04,848 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
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[2022-10-04 02:59:04,856 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2022-10-04 02:59:04,857 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2022-10-04 02:59:04,865 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/gemcutter/NewStatesSleep-VarAbsGlobalSyntactic.epf
[2022-10-04 02:59:04,898 INFO  L113        SettingsManager]: Loading preferences was successful
[2022-10-04 02:59:04,898 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2022-10-04 02:59:04,898 INFO  L136        SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2022-10-04 02:59:04,898 INFO  L138        SettingsManager]:  * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2022-10-04 02:59:04,899 INFO  L136        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2022-10-04 02:59:04,899 INFO  L138        SettingsManager]:  * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2022-10-04 02:59:04,899 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2022-10-04 02:59:04,899 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2022-10-04 02:59:04,899 INFO  L138        SettingsManager]:  * Use SBE=true
[2022-10-04 02:59:04,899 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2022-10-04 02:59:04,899 INFO  L138        SettingsManager]:  * sizeof long=4
[2022-10-04 02:59:04,900 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2022-10-04 02:59:04,900 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2022-10-04 02:59:04,900 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2022-10-04 02:59:04,900 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2022-10-04 02:59:04,900 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2022-10-04 02:59:04,900 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2022-10-04 02:59:04,900 INFO  L138        SettingsManager]:  * sizeof long double=12
[2022-10-04 02:59:04,900 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2022-10-04 02:59:04,900 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2022-10-04 02:59:04,900 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2022-10-04 02:59:04,900 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2022-10-04 02:59:04,901 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2022-10-04 02:59:04,901 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2022-10-04 02:59:04,901 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2022-10-04 02:59:04,901 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-10-04 02:59:04,901 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2022-10-04 02:59:04,901 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2022-10-04 02:59:04,901 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2022-10-04 02:59:04,901 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2022-10-04 02:59:04,901 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2022-10-04 02:59:04,901 INFO  L138        SettingsManager]:  * Apply one-shot large block encoding in concurrent analysis=false
[2022-10-04 02:59:04,901 INFO  L138        SettingsManager]:  * Abstraction used for commutativity in POR=VARIABLES_GLOBAL
[2022-10-04 02:59:04,902 INFO  L138        SettingsManager]:  * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA
[2022-10-04 02:59:04,902 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2022-10-04 02:59:04,902 INFO  L138        SettingsManager]:  * CEGAR restart behaviour=ONE_CEGAR_PER_ERROR_LOCATION
[2022-10-04 02:59:04,902 INFO  L138        SettingsManager]:  * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES
[2022-10-04 02:59:04,902 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2022-10-04 02:59:04,902 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$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[2022-10-04 02:59:05,089 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2022-10-04 02:59:05,118 INFO  L261   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2022-10-04 02:59:05,120 INFO  L217   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2022-10-04 02:59:05,121 INFO  L271        PluginConnector]: Initializing Boogie PL CUP Parser...
[2022-10-04 02:59:05,122 INFO  L275        PluginConnector]: Boogie PL CUP Parser initialized
[2022-10-04 02:59:05,123 INFO  L432   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/ring_2w1r-2.line585.bpl
[2022-10-04 02:59:05,123 INFO  L110           BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/boogie-benchmarks-from-svcomp-memsafety-concurrent/ring_2w1r-2.line585.bpl'
[2022-10-04 02:59:05,173 INFO  L299   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2022-10-04 02:59:05,175 INFO  L131        ToolchainWalker]: Walking toolchain with 3 elements.
[2022-10-04 02:59:05,176 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2022-10-04 02:59:05,176 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2022-10-04 02:59:05,176 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2022-10-04 02:59:05,188 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ring_2w1r-2.line585.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:59:05" (1/1) ...
[2022-10-04 02:59:05,189 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ring_2w1r-2.line585.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:59:05" (1/1) ...
[2022-10-04 02:59:05,213 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ring_2w1r-2.line585.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:59:05" (1/1) ...
[2022-10-04 02:59:05,213 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ring_2w1r-2.line585.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:59:05" (1/1) ...
[2022-10-04 02:59:05,229 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ring_2w1r-2.line585.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:59:05" (1/1) ...
[2022-10-04 02:59:05,233 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ring_2w1r-2.line585.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:59:05" (1/1) ...
[2022-10-04 02:59:05,235 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ring_2w1r-2.line585.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:59:05" (1/1) ...
[2022-10-04 02:59:05,242 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2022-10-04 02:59:05,243 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2022-10-04 02:59:05,243 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2022-10-04 02:59:05,243 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2022-10-04 02:59:05,248 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ring_2w1r-2.line585.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:59:05" (1/1) ...
[2022-10-04 02:59:05,264 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2022-10-04 02:59:05,269 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-10-04 02:59:05,279 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 02:59:05,289 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 02:59:05,312 INFO  L130     BoogieDeclarations]: Found specification of procedure reader_two
[2022-10-04 02:59:05,312 INFO  L138     BoogieDeclarations]: Found implementation of procedure reader_two
[2022-10-04 02:59:05,312 INFO  L130     BoogieDeclarations]: Found specification of procedure writer_fn
[2022-10-04 02:59:05,312 INFO  L138     BoogieDeclarations]: Found implementation of procedure writer_fn
[2022-10-04 02:59:05,312 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2022-10-04 02:59:05,313 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2022-10-04 02:59:05,314 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 02:59:05,427 INFO  L234             CfgBuilder]: Building ICFG
[2022-10-04 02:59:05,428 INFO  L260             CfgBuilder]: Building CFG for each procedure with an implementation
[2022-10-04 02:59:06,049 INFO  L275             CfgBuilder]: Performing block encoding
[2022-10-04 02:59:06,079 INFO  L294             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2022-10-04 02:59:06,080 INFO  L299             CfgBuilder]: Removed 6 assume(true) statements.
[2022-10-04 02:59:06,082 INFO  L202        PluginConnector]: Adding new model ring_2w1r-2.line585.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 02:59:06 BoogieIcfgContainer
[2022-10-04 02:59:06,083 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2022-10-04 02:59:06,085 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2022-10-04 02:59:06,085 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2022-10-04 02:59:06,089 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2022-10-04 02:59:06,089 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ring_2w1r-2.line585.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 04.10 02:59:05" (1/2) ...
[2022-10-04 02:59:06,090 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aaf49f5 and model type ring_2w1r-2.line585.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.10 02:59:06, skipping insertion in model container
[2022-10-04 02:59:06,091 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ring_2w1r-2.line585.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.10 02:59:06" (2/2) ...
[2022-10-04 02:59:06,092 INFO  L112   eAbstractionObserver]: Analyzing ICFG ring_2w1r-2.line585.bpl
[2022-10-04 02:59:06,108 WARN  L145   ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program
[2022-10-04 02:59:06,116 INFO  L203   ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2022-10-04 02:59:06,116 INFO  L162   ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations.
[2022-10-04 02:59:06,116 INFO  L515   ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2022-10-04 02:59:06,247 INFO  L144    ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions.
[2022-10-04 02:59:06,306 INFO  L100   denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2022-10-04 02:59:06,306 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000
[2022-10-04 02:59:06,307 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-10-04 02:59:06,309 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 02:59:06,323 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 02:59:06,353 INFO  L158   artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations.
[2022-10-04 02:59:06,362 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ========
[2022-10-04 02:59:06,373 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;@66fdf975, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2022-10-04 02:59:06,373 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-10-04 02:59:06,852 INFO  L805   garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining)
[2022-10-04 02:59:06,857 INFO  L444         BasicCegarLoop]: Path program histogram: []
[2022-10-04 02:59:06,859 INFO  L307   ceAbstractionStarter]: Result for error location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was SAFE (1/4)
[2022-10-04 02:59:06,868 INFO  L100   denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2022-10-04 02:59:06,868 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000
[2022-10-04 02:59:06,869 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-10-04 02:59:06,870 INFO  L229       MonitoredProcess]: Starting monitored process 3 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 02:59:06,871 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (3)] Waiting until timeout for monitored process
[2022-10-04 02:59:06,875 INFO  L158   artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations.
[2022-10-04 02:59:06,875 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES ========
[2022-10-04 02:59:06,876 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;@66fdf975, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2022-10-04 02:59:06,876 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-10-04 02:59:06,881 INFO  L805   garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining)
[2022-10-04 02:59:06,882 INFO  L444         BasicCegarLoop]: Path program histogram: []
[2022-10-04 02:59:06,882 INFO  L307   ceAbstractionStarter]: Result for error location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES was SAFE (2/4)
[2022-10-04 02:59:06,887 INFO  L100   denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2022-10-04 02:59:06,887 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000
[2022-10-04 02:59:06,888 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-10-04 02:59:06,925 INFO  L229       MonitoredProcess]: Starting monitored process 4 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 02:59:06,927 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (4)] Waiting until timeout for monitored process
[2022-10-04 02:59:06,929 INFO  L158   artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations.
[2022-10-04 02:59:06,929 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == writer_fnErr0ASSERT_VIOLATIONASSERT ========
[2022-10-04 02:59:06,930 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;@66fdf975, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2022-10-04 02:59:06,930 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-10-04 02:59:06,930 WARN  L124    DepthFirstTraversal]: Depth first traversal did not find any initial state. Returning directly.
[2022-10-04 02:59:06,931 INFO  L805   garLoopResultBuilder]: Registering result SAFE for location writer_fnErr0ASSERT_VIOLATIONASSERT (0 of 1 remaining)
[2022-10-04 02:59:06,931 INFO  L444         BasicCegarLoop]: Path program histogram: []
[2022-10-04 02:59:06,931 INFO  L307   ceAbstractionStarter]: Result for error location writer_fnErr0ASSERT_VIOLATIONASSERT was SAFE (3/4)
[2022-10-04 02:59:06,935 INFO  L100   denceProviderFactory]: Independence Relation #1: [IndependenceType=SYNTACTIC, AbstractionType=VARIABLES_GLOBAL, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2022-10-04 02:59:06,936 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000
[2022-10-04 02:59:06,936 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-10-04 02:59:06,940 INFO  L229       MonitoredProcess]: Starting monitored process 5 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 02:59:06,943 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (5)] Waiting until timeout for monitored process
[2022-10-04 02:59:06,946 INFO  L158   artialOrderCegarLoop]: Running PartialOrderCegarLoop with 1 independence relations.
[2022-10-04 02:59:06,947 INFO  L356      AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == writer_fnErr0ASSERT_VIOLATIONASSERT ========
[2022-10-04 02:59:06,948 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;@66fdf975, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms]
[2022-10-04 02:59:06,948 INFO  L358      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2022-10-04 02:59:07,024 INFO  L420      AbstractCegarLoop]: === Iteration 1 === Targeting writer_fnErr0ASSERT_VIOLATIONASSERT === [writer_fnErr0ASSERT_VIOLATIONASSERT] ===
[2022-10-04 02:59:07,028 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-10-04 02:59:07,029 INFO  L85        PathProgramCache]: Analyzing trace with hash -717849477, now seen corresponding path program 1 times
[2022-10-04 02:59:07,035 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-10-04 02:59:07,036 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751771999]
[2022-10-04 02:59:07,036 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-10-04 02:59:07,037 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-10-04 02:59:07,213 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-10-04 02:59:07,311 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 02:59:07,312 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-10-04 02:59:07,312 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751771999]
[2022-10-04 02:59:07,313 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751771999] provided 1 perfect and 0 imperfect interpolant sequences
[2022-10-04 02:59:07,313 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-10-04 02:59:07,313 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2022-10-04 02:59:07,314 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969199019]
[2022-10-04 02:59:07,314 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-10-04 02:59:07,320 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2022-10-04 02:59:07,320 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-10-04 02:59:07,339 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2022-10-04 02:59:07,341 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2022-10-04 02:59:07,342 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 02:59:07,344 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2022-10-04 02:59:07,345 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 2 states, 2 states have (on average 88.5) internal successors, (177), 2 states have internal predecessors, (177), 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 02:59:07,345 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 02:59:07,391 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 02:59:07,391 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2022-10-04 02:59:07,391 INFO  L420      AbstractCegarLoop]: === Iteration 2 === Targeting writer_fnErr0ASSERT_VIOLATIONASSERT === [writer_fnErr0ASSERT_VIOLATIONASSERT] ===
[2022-10-04 02:59:07,392 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-10-04 02:59:07,392 INFO  L85        PathProgramCache]: Analyzing trace with hash 1459979207, now seen corresponding path program 1 times
[2022-10-04 02:59:07,392 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-10-04 02:59:07,397 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412815883]
[2022-10-04 02:59:07,398 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-10-04 02:59:07,398 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-10-04 02:59:07,482 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-10-04 02:59:07,667 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 02:59:07,667 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-10-04 02:59:07,667 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412815883]
[2022-10-04 02:59:07,667 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412815883] provided 1 perfect and 0 imperfect interpolant sequences
[2022-10-04 02:59:07,668 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-10-04 02:59:07,668 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9
[2022-10-04 02:59:07,668 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988727151]
[2022-10-04 02:59:07,668 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-10-04 02:59:07,669 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2022-10-04 02:59:07,669 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-10-04 02:59:07,669 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2022-10-04 02:59:07,669 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90
[2022-10-04 02:59:07,669 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 02:59:07,670 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2022-10-04 02:59:07,670 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 10 states, 9 states have (on average 21.666666666666668) internal successors, (195), 10 states have internal predecessors, (195), 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 02:59:07,670 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 02:59:07,671 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 02:59:11,965 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 02:59:11,966 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2022-10-04 02:59:11,966 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2022-10-04 02:59:11,966 INFO  L420      AbstractCegarLoop]: === Iteration 3 === Targeting writer_fnErr0ASSERT_VIOLATIONASSERT === [writer_fnErr0ASSERT_VIOLATIONASSERT] ===
[2022-10-04 02:59:11,967 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-10-04 02:59:11,967 INFO  L85        PathProgramCache]: Analyzing trace with hash -1995548959, now seen corresponding path program 1 times
[2022-10-04 02:59:11,967 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-10-04 02:59:11,967 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213640106]
[2022-10-04 02:59:11,967 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-10-04 02:59:11,967 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-10-04 02:59:12,047 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-10-04 02:59:12,176 INFO  L134       CoverageAnalysis]: Checked inductivity of 54 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked.
[2022-10-04 02:59:12,178 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-10-04 02:59:12,178 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213640106]
[2022-10-04 02:59:12,179 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213640106] provided 1 perfect and 0 imperfect interpolant sequences
[2022-10-04 02:59:12,179 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-10-04 02:59:12,179 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2022-10-04 02:59:12,179 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994077344]
[2022-10-04 02:59:12,179 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-10-04 02:59:12,180 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2022-10-04 02:59:12,180 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-10-04 02:59:12,180 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2022-10-04 02:59:12,180 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2022-10-04 02:59:12,180 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 02:59:12,181 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2022-10-04 02:59:12,181 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 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 02:59:12,181 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 02:59:12,181 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. 
[2022-10-04 02:59:12,182 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 02:59:16,483 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 02:59:16,484 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2022-10-04 02:59:16,486 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 02:59:16,487 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2022-10-04 02:59:16,487 INFO  L420      AbstractCegarLoop]: === Iteration 4 === Targeting writer_fnErr0ASSERT_VIOLATIONASSERT === [writer_fnErr0ASSERT_VIOLATIONASSERT] ===
[2022-10-04 02:59:16,487 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-10-04 02:59:16,488 INFO  L85        PathProgramCache]: Analyzing trace with hash 436485083, now seen corresponding path program 1 times
[2022-10-04 02:59:16,488 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-10-04 02:59:16,488 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584673773]
[2022-10-04 02:59:16,488 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-10-04 02:59:16,488 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-10-04 02:59:16,763 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-10-04 02:59:16,866 INFO  L134       CoverageAnalysis]: Checked inductivity of 173 backedges. 142 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked.
[2022-10-04 02:59:16,866 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-10-04 02:59:16,866 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584673773]
[2022-10-04 02:59:16,866 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584673773] provided 0 perfect and 1 imperfect interpolant sequences
[2022-10-04 02:59:16,868 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107892472]
[2022-10-04 02:59:16,868 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-10-04 02:59:16,868 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-10-04 02:59:16,868 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-10-04 02:59:16,870 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)
[2022-10-04 02:59:16,871 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2022-10-04 02:59:17,080 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-10-04 02:59:17,086 INFO  L263         TraceCheckSpWp]: Trace formula consists of 934 conjuncts, 3 conjunts are in the unsatisfiable core
[2022-10-04 02:59:17,107 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-10-04 02:59:17,318 INFO  L134       CoverageAnalysis]: Checked inductivity of 173 backedges. 142 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked.
[2022-10-04 02:59:17,318 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-10-04 02:59:17,459 INFO  L134       CoverageAnalysis]: Checked inductivity of 173 backedges. 142 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked.
[2022-10-04 02:59:17,460 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107892472] provided 0 perfect and 2 imperfect interpolant sequences
[2022-10-04 02:59:17,460 INFO  L184   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-10-04 02:59:17,460 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7
[2022-10-04 02:59:17,460 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158129613]
[2022-10-04 02:59:17,460 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-10-04 02:59:17,461 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2022-10-04 02:59:17,461 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-10-04 02:59:17,461 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2022-10-04 02:59:17,462 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42
[2022-10-04 02:59:17,462 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 02:59:17,462 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2022-10-04 02:59:17,463 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 7 states, 7 states have (on average 91.42857142857143) internal successors, (640), 7 states have internal predecessors, (640), 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 02:59:17,463 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 02:59:17,463 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. 
[2022-10-04 02:59:17,463 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 02:59:17,463 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 02:59:25,751 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 02:59:25,752 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2022-10-04 02:59:25,752 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 02:59:25,768 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2022-10-04 02:59:25,795 INFO  L552       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2022-10-04 02:59:25,969 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-10-04 02:59:25,970 INFO  L420      AbstractCegarLoop]: === Iteration 5 === Targeting writer_fnErr0ASSERT_VIOLATIONASSERT === [writer_fnErr0ASSERT_VIOLATIONASSERT] ===
[2022-10-04 02:59:25,971 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-10-04 02:59:25,972 INFO  L85        PathProgramCache]: Analyzing trace with hash -1520708011, now seen corresponding path program 2 times
[2022-10-04 02:59:25,972 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-10-04 02:59:25,972 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475393876]
[2022-10-04 02:59:25,972 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-10-04 02:59:25,972 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-10-04 02:59:26,066 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-10-04 02:59:26,201 INFO  L134       CoverageAnalysis]: Checked inductivity of 554 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked.
[2022-10-04 02:59:26,202 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-10-04 02:59:26,203 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475393876]
[2022-10-04 02:59:26,203 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475393876] provided 1 perfect and 0 imperfect interpolant sequences
[2022-10-04 02:59:26,203 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-10-04 02:59:26,203 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2022-10-04 02:59:26,203 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071333541]
[2022-10-04 02:59:26,203 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-10-04 02:59:26,204 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2022-10-04 02:59:26,204 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-10-04 02:59:26,205 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2022-10-04 02:59:26,205 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2022-10-04 02:59:26,205 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 02:59:26,206 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2022-10-04 02:59:26,206 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 6 states, 5 states have (on average 63.8) internal successors, (319), 6 states have internal predecessors, (319), 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 02:59:26,207 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 02:59:26,207 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. 
[2022-10-04 02:59:26,207 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 02:59:26,207 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. 
[2022-10-04 02:59:26,207 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 02:59:35,072 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 02:59:35,072 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2022-10-04 02:59:35,072 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 02:59:35,072 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2022-10-04 02:59:35,073 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2022-10-04 02:59:35,073 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2022-10-04 02:59:35,073 INFO  L420      AbstractCegarLoop]: === Iteration 6 === Targeting writer_fnErr0ASSERT_VIOLATIONASSERT === [writer_fnErr0ASSERT_VIOLATIONASSERT] ===
[2022-10-04 02:59:35,073 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-10-04 02:59:35,074 INFO  L85        PathProgramCache]: Analyzing trace with hash 392357715, now seen corresponding path program 1 times
[2022-10-04 02:59:35,074 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-10-04 02:59:35,074 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654610877]
[2022-10-04 02:59:35,074 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-10-04 02:59:35,075 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-10-04 02:59:35,177 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-10-04 02:59:35,403 INFO  L134       CoverageAnalysis]: Checked inductivity of 1294 backedges. 418 proven. 0 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked.
[2022-10-04 02:59:35,404 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-10-04 02:59:35,405 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654610877]
[2022-10-04 02:59:35,405 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654610877] provided 1 perfect and 0 imperfect interpolant sequences
[2022-10-04 02:59:35,405 INFO  L184   FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2022-10-04 02:59:35,405 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2022-10-04 02:59:35,405 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439227338]
[2022-10-04 02:59:35,405 INFO  L85    oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2022-10-04 02:59:35,406 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2022-10-04 02:59:35,406 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-10-04 02:59:35,408 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2022-10-04 02:59:35,408 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2022-10-04 02:59:35,408 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 02:59:35,409 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2022-10-04 02:59:35,409 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 4 states, 4 states have (on average 128.75) internal successors, (515), 4 states have internal predecessors, (515), 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 02:59:35,409 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 02:59:35,409 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. 
[2022-10-04 02:59:35,409 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 02:59:35,409 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. 
[2022-10-04 02:59:35,410 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2022-10-04 02:59:35,410 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 02:59:48,332 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 02:59:48,332 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2022-10-04 02:59:48,332 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 02:59:48,332 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2022-10-04 02:59:48,332 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2022-10-04 02:59:48,333 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-10-04 02:59:48,333 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2022-10-04 02:59:48,333 INFO  L420      AbstractCegarLoop]: === Iteration 7 === Targeting writer_fnErr0ASSERT_VIOLATIONASSERT === [writer_fnErr0ASSERT_VIOLATIONASSERT] ===
[2022-10-04 02:59:48,333 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-10-04 02:59:48,334 INFO  L85        PathProgramCache]: Analyzing trace with hash 661935546, now seen corresponding path program 1 times
[2022-10-04 02:59:48,334 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-10-04 02:59:48,334 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498785116]
[2022-10-04 02:59:48,334 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-10-04 02:59:48,334 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-10-04 02:59:48,578 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-10-04 02:59:48,918 INFO  L134       CoverageAnalysis]: Checked inductivity of 1801 backedges. 680 proven. 417 refuted. 0 times theorem prover too weak. 704 trivial. 0 not checked.
[2022-10-04 02:59:48,918 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-10-04 02:59:48,918 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498785116]
[2022-10-04 02:59:48,919 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498785116] provided 0 perfect and 1 imperfect interpolant sequences
[2022-10-04 02:59:48,919 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [460033076]
[2022-10-04 02:59:48,919 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-10-04 02:59:48,920 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-10-04 02:59:48,920 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-10-04 02:59:48,936 INFO  L229       MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-10-04 02:59:48,937 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process
[2022-10-04 02:59:49,296 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-10-04 02:59:49,307 INFO  L263         TraceCheckSpWp]: Trace formula consists of 2504 conjuncts, 6 conjunts are in the unsatisfiable core
[2022-10-04 02:59:49,321 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-10-04 02:59:49,656 INFO  L134       CoverageAnalysis]: Checked inductivity of 1801 backedges. 766 proven. 382 refuted. 0 times theorem prover too weak. 653 trivial. 0 not checked.
[2022-10-04 02:59:49,656 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-10-04 02:59:49,963 INFO  L134       CoverageAnalysis]: Checked inductivity of 1801 backedges. 766 proven. 382 refuted. 0 times theorem prover too weak. 653 trivial. 0 not checked.
[2022-10-04 02:59:49,963 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [460033076] provided 0 perfect and 2 imperfect interpolant sequences
[2022-10-04 02:59:49,963 INFO  L184   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-10-04 02:59:49,964 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 13
[2022-10-04 02:59:49,964 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44865149]
[2022-10-04 02:59:49,965 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-10-04 02:59:49,967 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 13 states
[2022-10-04 02:59:49,967 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-10-04 02:59:49,968 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2022-10-04 02:59:49,969 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156
[2022-10-04 02:59:49,969 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 02:59:49,970 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2022-10-04 02:59:49,972 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 13 states, 13 states have (on average 119.46153846153847) internal successors, (1553), 13 states have internal predecessors, (1553), 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 02:59:49,972 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 02:59:49,972 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. 
[2022-10-04 02:59:49,972 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 02:59:49,972 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. 
[2022-10-04 02:59:49,972 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2022-10-04 02:59:49,972 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. 
[2022-10-04 02:59:49,972 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 03:01:23,847 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 03:01:23,847 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2022-10-04 03:01:23,847 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 03:01:23,848 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2022-10-04 03:01:23,848 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2022-10-04 03:01:23,848 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2022-10-04 03:01:23,848 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. 
[2022-10-04 03:01:23,870 INFO  L540       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0
[2022-10-04 03:01:24,048 WARN  L477      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-10-04 03:01:24,053 INFO  L420      AbstractCegarLoop]: === Iteration 8 === Targeting writer_fnErr0ASSERT_VIOLATIONASSERT === [writer_fnErr0ASSERT_VIOLATIONASSERT] ===
[2022-10-04 03:01:24,053 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2022-10-04 03:01:24,054 INFO  L85        PathProgramCache]: Analyzing trace with hash 932594451, now seen corresponding path program 2 times
[2022-10-04 03:01:24,054 INFO  L118   FreeRefinementEngine]: Executing refinement strategy CAMEL
[2022-10-04 03:01:24,054 INFO  L333   FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449083300]
[2022-10-04 03:01:24,058 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2022-10-04 03:01:24,058 INFO  L127          SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2022-10-04 03:01:24,747 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2022-10-04 03:01:25,120 INFO  L134       CoverageAnalysis]: Checked inductivity of 3890 backedges. 837 proven. 852 refuted. 0 times theorem prover too weak. 2201 trivial. 0 not checked.
[2022-10-04 03:01:25,120 INFO  L136   FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2022-10-04 03:01:25,120 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449083300]
[2022-10-04 03:01:25,121 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449083300] provided 0 perfect and 1 imperfect interpolant sequences
[2022-10-04 03:01:25,121 INFO  L333   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131139497]
[2022-10-04 03:01:25,121 INFO  L93    rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2022-10-04 03:01:25,121 INFO  L173          SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2022-10-04 03:01:25,121 INFO  L189       MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2022-10-04 03:01:25,123 INFO  L229       MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2022-10-04 03:01:25,124 INFO  L327       MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process
[2022-10-04 03:01:25,633 INFO  L228   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2022-10-04 03:01:25,633 INFO  L229   tOrderPrioritization]: Conjunction of SSA is unsat
[2022-10-04 03:01:25,656 INFO  L263         TraceCheckSpWp]: Trace formula consists of 3425 conjuncts, 5 conjunts are in the unsatisfiable core
[2022-10-04 03:01:25,676 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2022-10-04 03:01:26,612 INFO  L134       CoverageAnalysis]: Checked inductivity of 3890 backedges. 837 proven. 852 refuted. 0 times theorem prover too weak. 2201 trivial. 0 not checked.
[2022-10-04 03:01:26,612 INFO  L328         TraceCheckSpWp]: Computing backward predicates...
[2022-10-04 03:01:27,330 INFO  L134       CoverageAnalysis]: Checked inductivity of 3890 backedges. 837 proven. 852 refuted. 0 times theorem prover too weak. 2201 trivial. 0 not checked.
[2022-10-04 03:01:27,331 INFO  L157   FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131139497] provided 0 perfect and 2 imperfect interpolant sequences
[2022-10-04 03:01:27,331 INFO  L184   FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2022-10-04 03:01:27,331 INFO  L197   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11
[2022-10-04 03:01:27,331 INFO  L121   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358311445]
[2022-10-04 03:01:27,332 INFO  L85    oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2022-10-04 03:01:27,334 INFO  L571      AbstractCegarLoop]: INTERPOLANT automaton has 11 states
[2022-10-04 03:01:27,334 INFO  L100   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2022-10-04 03:01:27,334 INFO  L143   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2022-10-04 03:01:27,335 INFO  L145   InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110
[2022-10-04 03:01:27,335 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 03:01:27,336 INFO  L495      AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states
[2022-10-04 03:01:27,337 INFO  L496      AbstractCegarLoop]: INTERPOLANT automaton has  has 11 states, 11 states have (on average 150.0) internal successors, (1650), 11 states have internal predecessors, (1650), 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 03:01:27,337 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. 
[2022-10-04 03:01:27,337 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. 
[2022-10-04 03:01:27,337 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. 
[2022-10-04 03:01:27,337 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. 
[2022-10-04 03:01:27,337 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. 
[2022-10-04 03:01:27,337 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. 
[2022-10-04 03:01:27,337 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 37 states. 
[2022-10-04 03:01:27,338 INFO  L154   InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.