/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/stateful_check.c


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


This is Ultimate 0.1.25-5644d1e-m
[2020-08-18 16:17:33,213 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-08-18 16:17:33,216 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-08-18 16:17:33,253 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-08-18 16:17:33,254 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-08-18 16:17:33,261 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-08-18 16:17:33,265 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-08-18 16:17:33,268 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-08-18 16:17:33,271 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-08-18 16:17:33,274 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-08-18 16:17:33,275 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-08-18 16:17:33,276 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-08-18 16:17:33,276 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-08-18 16:17:33,279 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-08-18 16:17:33,282 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-08-18 16:17:33,283 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-08-18 16:17:33,285 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-08-18 16:17:33,286 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-08-18 16:17:33,288 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-08-18 16:17:33,295 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-08-18 16:17:33,298 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-08-18 16:17:33,298 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-08-18 16:17:33,299 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-08-18 16:17:33,300 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-08-18 16:17:33,315 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-08-18 16:17:33,315 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-08-18 16:17:33,316 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-08-18 16:17:33,317 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-08-18 16:17:33,319 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-08-18 16:17:33,320 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-08-18 16:17:33,320 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-08-18 16:17:33,321 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-08-18 16:17:33,325 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-08-18 16:17:33,326 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-08-18 16:17:33,327 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-08-18 16:17:33,327 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
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[2020-08-18 16:17:33,330 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2020-08-18 16:17:33,332 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-08-18 16:17:33,332 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-08-18 16:17:33,373 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-08-18 16:17:33,373 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-08-18 16:17:33,375 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-08-18 16:17:33,376 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-08-18 16:17:33,376 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-08-18 16:17:33,376 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-08-18 16:17:33,376 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-08-18 16:17:33,377 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-08-18 16:17:33,377 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-08-18 16:17:33,377 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-08-18 16:17:33,378 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-08-18 16:17:33,378 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-08-18 16:17:33,378 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-08-18 16:17:33,379 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-08-18 16:17:33,379 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-08-18 16:17:33,379 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-08-18 16:17:33,380 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-08-18 16:17:33,380 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-08-18 16:17:33,380 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-08-18 16:17:33,380 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-08-18 16:17:33,381 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-08-18 16:17:33,381 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-08-18 16:17:33,381 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-08-18 16:17:33,381 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-08-18 16:17:33,381 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-08-18 16:17:33,382 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-08-18 16:17:33,382 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-08-18 16:17:33,382 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-08-18 16:17:33,382 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-08-18 16:17:33,382 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true
[2020-08-18 16:17:33,740 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-08-18 16:17:33,760 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-08-18 16:17:33,777 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-08-18 16:17:33,779 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-08-18 16:17:33,780 INFO  L275        PluginConnector]: CDTParser initialized
[2020-08-18 16:17:33,780 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/stateful_check.c
[2020-08-18 16:17:33,858 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f30a26382/3c147ea0a47a40f8b2f51dd527a93d2d/FLAGd0e26fd0e
[2020-08-18 16:17:34,379 INFO  L306              CDTParser]: Found 1 translation units.
[2020-08-18 16:17:34,380 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/stateful_check.c
[2020-08-18 16:17:34,388 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f30a26382/3c147ea0a47a40f8b2f51dd527a93d2d/FLAGd0e26fd0e
[2020-08-18 16:17:34,751 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f30a26382/3c147ea0a47a40f8b2f51dd527a93d2d
[2020-08-18 16:17:34,761 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-08-18 16:17:34,762 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-08-18 16:17:34,764 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-08-18 16:17:34,764 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-08-18 16:17:34,768 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-08-18 16:17:34,769 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:17:34" (1/1) ...
[2020-08-18 16:17:34,772 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a530f9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:17:34, skipping insertion in model container
[2020-08-18 16:17:34,772 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:17:34" (1/1) ...
[2020-08-18 16:17:34,781 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-08-18 16:17:34,806 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-08-18 16:17:34,994 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-08-18 16:17:34,998 INFO  L203         MainTranslator]: Completed pre-run
[2020-08-18 16:17:35,021 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-08-18 16:17:35,035 INFO  L208         MainTranslator]: Completed translation
[2020-08-18 16:17:35,036 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:17:35 WrapperNode
[2020-08-18 16:17:35,036 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-08-18 16:17:35,037 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-08-18 16:17:35,037 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-08-18 16:17:35,037 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-08-18 16:17:35,048 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:17:35" (1/1) ...
[2020-08-18 16:17:35,048 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:17:35" (1/1) ...
[2020-08-18 16:17:35,145 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:17:35" (1/1) ...
[2020-08-18 16:17:35,145 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:17:35" (1/1) ...
[2020-08-18 16:17:35,159 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:17:35" (1/1) ...
[2020-08-18 16:17:35,165 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:17:35" (1/1) ...
[2020-08-18 16:17:35,167 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:17:35" (1/1) ...
[2020-08-18 16:17:35,169 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-08-18 16:17:35,170 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-08-18 16:17:35,170 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-08-18 16:17:35,170 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-08-18 16:17:35,171 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:17:35" (1/1) ...
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-08-18 16:17:35,238 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-08-18 16:17:35,239 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-08-18 16:17:35,239 INFO  L138     BoogieDeclarations]: Found implementation of procedure __blast_assert
[2020-08-18 16:17:35,239 INFO  L138     BoogieDeclarations]: Found implementation of procedure mutex_lock
[2020-08-18 16:17:35,239 INFO  L138     BoogieDeclarations]: Found implementation of procedure mutex_unlock
[2020-08-18 16:17:35,240 INFO  L138     BoogieDeclarations]: Found implementation of procedure check_final_state
[2020-08-18 16:17:35,240 INFO  L138     BoogieDeclarations]: Found implementation of procedure misc_release
[2020-08-18 16:17:35,240 INFO  L138     BoogieDeclarations]: Found implementation of procedure misc_llseek
[2020-08-18 16:17:35,240 INFO  L138     BoogieDeclarations]: Found implementation of procedure misc_read
[2020-08-18 16:17:35,240 INFO  L138     BoogieDeclarations]: Found implementation of procedure misc_open
[2020-08-18 16:17:35,240 INFO  L138     BoogieDeclarations]: Found implementation of procedure my_init
[2020-08-18 16:17:35,241 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-08-18 16:17:35,241 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-08-18 16:17:35,241 INFO  L130     BoogieDeclarations]: Found specification of procedure __blast_assert
[2020-08-18 16:17:35,241 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-08-18 16:17:35,241 INFO  L130     BoogieDeclarations]: Found specification of procedure mutex_lock
[2020-08-18 16:17:35,241 INFO  L130     BoogieDeclarations]: Found specification of procedure mutex_unlock
[2020-08-18 16:17:35,242 INFO  L130     BoogieDeclarations]: Found specification of procedure check_final_state
[2020-08-18 16:17:35,242 INFO  L130     BoogieDeclarations]: Found specification of procedure misc_release
[2020-08-18 16:17:35,242 INFO  L130     BoogieDeclarations]: Found specification of procedure misc_llseek
[2020-08-18 16:17:35,242 INFO  L130     BoogieDeclarations]: Found specification of procedure misc_read
[2020-08-18 16:17:35,242 INFO  L130     BoogieDeclarations]: Found specification of procedure misc_open
[2020-08-18 16:17:35,242 INFO  L130     BoogieDeclarations]: Found specification of procedure my_init
[2020-08-18 16:17:35,243 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-08-18 16:17:35,243 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-08-18 16:17:35,243 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-08-18 16:17:35,580 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-08-18 16:17:35,581 INFO  L295             CfgBuilder]: Removed 1 assume(true) statements.
[2020-08-18 16:17:35,586 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:17:35 BoogieIcfgContainer
[2020-08-18 16:17:35,587 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-08-18 16:17:35,588 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-08-18 16:17:35,588 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-08-18 16:17:35,591 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-08-18 16:17:35,592 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 04:17:34" (1/3) ...
[2020-08-18 16:17:35,593 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@562d24c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:17:35, skipping insertion in model container
[2020-08-18 16:17:35,593 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:17:35" (2/3) ...
[2020-08-18 16:17:35,593 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@562d24c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:17:35, skipping insertion in model container
[2020-08-18 16:17:35,594 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:17:35" (3/3) ...
[2020-08-18 16:17:35,595 INFO  L109   eAbstractionObserver]: Analyzing ICFG stateful_check.c
[2020-08-18 16:17:35,608 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-08-18 16:17:35,615 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-08-18 16:17:35,630 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-08-18 16:17:35,673 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-08-18 16:17:35,673 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-08-18 16:17:35,673 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-08-18 16:17:35,674 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-08-18 16:17:35,674 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-08-18 16:17:35,674 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-08-18 16:17:35,674 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-08-18 16:17:35,675 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-08-18 16:17:35,699 INFO  L276                IsEmpty]: Start isEmpty. Operand 74 states.
[2020-08-18 16:17:35,704 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2020-08-18 16:17:35,705 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 16:17:35,705 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-18 16:17:35,706 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 16:17:35,711 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 16:17:35,711 INFO  L82        PathProgramCache]: Analyzing trace with hash 1865767033, now seen corresponding path program 1 times
[2020-08-18 16:17:35,720 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 16:17:35,721 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [64354708]
[2020-08-18 16:17:35,721 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 16:17:35,814 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 16:17:35,887 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 16:17:35,890 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 16:17:35,904 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 16:17:35,906 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 16:17:35,914 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-18 16:17:35,915 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [64354708]
[2020-08-18 16:17:35,917 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-18 16:17:35,917 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-08-18 16:17:35,919 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611661807]
[2020-08-18 16:17:35,924 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-08-18 16:17:35,925 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 16:17:35,939 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-08-18 16:17:35,941 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2020-08-18 16:17:35,943 INFO  L87              Difference]: Start difference. First operand 74 states. Second operand 4 states.
[2020-08-18 16:17:36,178 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 16:17:36,178 INFO  L93              Difference]: Finished difference Result 140 states and 185 transitions.
[2020-08-18 16:17:36,179 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2020-08-18 16:17:36,181 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 16
[2020-08-18 16:17:36,181 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 16:17:36,194 INFO  L225             Difference]: With dead ends: 140
[2020-08-18 16:17:36,195 INFO  L226             Difference]: Without dead ends: 70
[2020-08-18 16:17:36,199 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2020-08-18 16:17:36,220 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 70 states.
[2020-08-18 16:17:36,255 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65.
[2020-08-18 16:17:36,257 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 65 states.
[2020-08-18 16:17:36,259 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 80 transitions.
[2020-08-18 16:17:36,261 INFO  L78                 Accepts]: Start accepts. Automaton has 65 states and 80 transitions. Word has length 16
[2020-08-18 16:17:36,262 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 16:17:36,262 INFO  L479      AbstractCegarLoop]: Abstraction has 65 states and 80 transitions.
[2020-08-18 16:17:36,262 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-08-18 16:17:36,262 INFO  L276                IsEmpty]: Start isEmpty. Operand 65 states and 80 transitions.
[2020-08-18 16:17:36,263 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2020-08-18 16:17:36,263 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 16:17:36,263 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-18 16:17:36,264 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-08-18 16:17:36,264 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 16:17:36,264 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 16:17:36,265 INFO  L82        PathProgramCache]: Analyzing trace with hash 6927045, now seen corresponding path program 1 times
[2020-08-18 16:17:36,267 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 16:17:36,267 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [734896895]
[2020-08-18 16:17:36,268 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 16:17:36,305 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 16:17:36,348 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 16:17:36,352 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 16:17:36,368 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 16:17:36,372 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 16:17:36,378 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-18 16:17:36,379 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [734896895]
[2020-08-18 16:17:36,379 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-18 16:17:36,380 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-08-18 16:17:36,380 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092990558]
[2020-08-18 16:17:36,382 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-08-18 16:17:36,382 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 16:17:36,382 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-08-18 16:17:36,383 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-08-18 16:17:36,383 INFO  L87              Difference]: Start difference. First operand 65 states and 80 transitions. Second operand 5 states.
[2020-08-18 16:17:36,625 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 16:17:36,625 INFO  L93              Difference]: Finished difference Result 112 states and 143 transitions.
[2020-08-18 16:17:36,626 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-08-18 16:17:36,626 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 17
[2020-08-18 16:17:36,627 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 16:17:36,629 INFO  L225             Difference]: With dead ends: 112
[2020-08-18 16:17:36,629 INFO  L226             Difference]: Without dead ends: 106
[2020-08-18 16:17:36,631 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2020-08-18 16:17:36,632 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 106 states.
[2020-08-18 16:17:36,665 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 102.
[2020-08-18 16:17:36,665 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 102 states.
[2020-08-18 16:17:36,668 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 132 transitions.
[2020-08-18 16:17:36,668 INFO  L78                 Accepts]: Start accepts. Automaton has 102 states and 132 transitions. Word has length 17
[2020-08-18 16:17:36,668 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 16:17:36,669 INFO  L479      AbstractCegarLoop]: Abstraction has 102 states and 132 transitions.
[2020-08-18 16:17:36,669 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-08-18 16:17:36,669 INFO  L276                IsEmpty]: Start isEmpty. Operand 102 states and 132 transitions.
[2020-08-18 16:17:36,670 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2020-08-18 16:17:36,670 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 16:17:36,671 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-18 16:17:36,671 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-08-18 16:17:36,671 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 16:17:36,672 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 16:17:36,672 INFO  L82        PathProgramCache]: Analyzing trace with hash -695621135, now seen corresponding path program 1 times
[2020-08-18 16:17:36,672 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 16:17:36,672 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1012028506]
[2020-08-18 16:17:36,673 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 16:17:36,692 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 16:17:36,726 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 16:17:36,728 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 16:17:36,739 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 16:17:36,742 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 16:17:36,755 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20
[2020-08-18 16:17:36,757 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 16:17:36,767 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-18 16:17:36,767 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1012028506]
[2020-08-18 16:17:36,768 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-18 16:17:36,768 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-08-18 16:17:36,768 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78977601]
[2020-08-18 16:17:36,769 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-08-18 16:17:36,769 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 16:17:36,770 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-08-18 16:17:36,770 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-08-18 16:17:36,770 INFO  L87              Difference]: Start difference. First operand 102 states and 132 transitions. Second operand 6 states.
[2020-08-18 16:17:37,015 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 16:17:37,016 INFO  L93              Difference]: Finished difference Result 253 states and 356 transitions.
[2020-08-18 16:17:37,016 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2020-08-18 16:17:37,016 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 29
[2020-08-18 16:17:37,017 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 16:17:37,019 INFO  L225             Difference]: With dead ends: 253
[2020-08-18 16:17:37,019 INFO  L226             Difference]: Without dead ends: 162
[2020-08-18 16:17:37,021 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2020-08-18 16:17:37,021 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 162 states.
[2020-08-18 16:17:37,038 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 126.
[2020-08-18 16:17:37,038 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 126 states.
[2020-08-18 16:17:37,040 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 169 transitions.
[2020-08-18 16:17:37,040 INFO  L78                 Accepts]: Start accepts. Automaton has 126 states and 169 transitions. Word has length 29
[2020-08-18 16:17:37,041 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 16:17:37,041 INFO  L479      AbstractCegarLoop]: Abstraction has 126 states and 169 transitions.
[2020-08-18 16:17:37,041 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-08-18 16:17:37,041 INFO  L276                IsEmpty]: Start isEmpty. Operand 126 states and 169 transitions.
[2020-08-18 16:17:37,042 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 41
[2020-08-18 16:17:37,042 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 16:17:37,043 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-18 16:17:37,043 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-08-18 16:17:37,043 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 16:17:37,043 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 16:17:37,044 INFO  L82        PathProgramCache]: Analyzing trace with hash -1328709660, now seen corresponding path program 1 times
[2020-08-18 16:17:37,044 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 16:17:37,044 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1097492480]
[2020-08-18 16:17:37,044 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 16:17:37,065 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 16:17:37,129 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 16:17:37,130 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 16:17:37,140 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 16:17:37,142 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 16:17:37,145 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15
[2020-08-18 16:17:37,147 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 16:17:37,158 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31
[2020-08-18 16:17:37,159 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 16:17:37,165 INFO  L134       CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-18 16:17:37,166 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1097492480]
[2020-08-18 16:17:37,166 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-08-18 16:17:37,166 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-08-18 16:17:37,166 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111235827]
[2020-08-18 16:17:37,167 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-08-18 16:17:37,167 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 16:17:37,167 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-08-18 16:17:37,168 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-08-18 16:17:37,168 INFO  L87              Difference]: Start difference. First operand 126 states and 169 transitions. Second operand 7 states.
[2020-08-18 16:17:37,432 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 16:17:37,433 INFO  L93              Difference]: Finished difference Result 350 states and 513 transitions.
[2020-08-18 16:17:37,433 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2020-08-18 16:17:37,434 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 40
[2020-08-18 16:17:37,434 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 16:17:37,437 INFO  L225             Difference]: With dead ends: 350
[2020-08-18 16:17:37,437 INFO  L226             Difference]: Without dead ends: 235
[2020-08-18 16:17:37,439 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90
[2020-08-18 16:17:37,440 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 235 states.
[2020-08-18 16:17:37,457 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 150.
[2020-08-18 16:17:37,458 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 150 states.
[2020-08-18 16:17:37,460 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 208 transitions.
[2020-08-18 16:17:37,460 INFO  L78                 Accepts]: Start accepts. Automaton has 150 states and 208 transitions. Word has length 40
[2020-08-18 16:17:37,460 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 16:17:37,460 INFO  L479      AbstractCegarLoop]: Abstraction has 150 states and 208 transitions.
[2020-08-18 16:17:37,461 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-08-18 16:17:37,461 INFO  L276                IsEmpty]: Start isEmpty. Operand 150 states and 208 transitions.
[2020-08-18 16:17:37,462 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 52
[2020-08-18 16:17:37,463 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 16:17:37,463 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-18 16:17:37,463 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-08-18 16:17:37,463 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 16:17:37,464 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 16:17:37,464 INFO  L82        PathProgramCache]: Analyzing trace with hash 1520942249, now seen corresponding path program 1 times
[2020-08-18 16:17:37,464 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 16:17:37,465 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1196742100]
[2020-08-18 16:17:37,465 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 16:17:37,484 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 16:17:37,565 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 16:17:37,567 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 16:17:37,576 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 16:17:37,578 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 16:17:37,582 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15
[2020-08-18 16:17:37,585 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 16:17:37,592 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27
[2020-08-18 16:17:37,594 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 16:17:37,607 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42
[2020-08-18 16:17:37,608 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 16:17:37,618 INFO  L134       CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-18 16:17:37,618 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1196742100]
[2020-08-18 16:17:37,619 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-08-18 16:17:37,619 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8
[2020-08-18 16:17:37,620 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434841445]
[2020-08-18 16:17:37,622 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-08-18 16:17:37,623 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 16:17:37,624 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-08-18 16:17:37,624 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56
[2020-08-18 16:17:37,624 INFO  L87              Difference]: Start difference. First operand 150 states and 208 transitions. Second operand 8 states.
[2020-08-18 16:17:37,998 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 16:17:37,998 INFO  L93              Difference]: Finished difference Result 447 states and 675 transitions.
[2020-08-18 16:17:37,999 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. 
[2020-08-18 16:17:37,999 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 51
[2020-08-18 16:17:38,000 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 16:17:38,002 INFO  L225             Difference]: With dead ends: 447
[2020-08-18 16:17:38,003 INFO  L226             Difference]: Without dead ends: 308
[2020-08-18 16:17:38,004 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132
[2020-08-18 16:17:38,005 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 308 states.
[2020-08-18 16:17:38,021 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 174.
[2020-08-18 16:17:38,022 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 174 states.
[2020-08-18 16:17:38,023 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 249 transitions.
[2020-08-18 16:17:38,024 INFO  L78                 Accepts]: Start accepts. Automaton has 174 states and 249 transitions. Word has length 51
[2020-08-18 16:17:38,024 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 16:17:38,024 INFO  L479      AbstractCegarLoop]: Abstraction has 174 states and 249 transitions.
[2020-08-18 16:17:38,024 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-08-18 16:17:38,025 INFO  L276                IsEmpty]: Start isEmpty. Operand 174 states and 249 transitions.
[2020-08-18 16:17:38,027 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 64
[2020-08-18 16:17:38,027 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 16:17:38,027 INFO  L422         BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-18 16:17:38,027 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-08-18 16:17:38,028 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 16:17:38,028 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 16:17:38,028 INFO  L82        PathProgramCache]: Analyzing trace with hash -1574199465, now seen corresponding path program 1 times
[2020-08-18 16:17:38,028 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 16:17:38,029 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963416820]
[2020-08-18 16:17:38,029 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 16:17:38,050 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 16:17:38,083 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-18 16:17:38,084 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 16:17:38,092 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6
[2020-08-18 16:17:38,093 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 16:17:38,095 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15
[2020-08-18 16:17:38,096 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 16:17:38,098 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27
[2020-08-18 16:17:38,099 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 16:17:38,100 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39
[2020-08-18 16:17:38,101 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 16:17:38,109 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54
[2020-08-18 16:17:38,110 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-18 16:17:38,120 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked.
[2020-08-18 16:17:38,121 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1963416820]
[2020-08-18 16:17:38,121 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-18 16:17:38,121 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-08-18 16:17:38,121 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624428007]
[2020-08-18 16:17:38,122 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-08-18 16:17:38,122 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-18 16:17:38,122 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-08-18 16:17:38,123 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-08-18 16:17:38,123 INFO  L87              Difference]: Start difference. First operand 174 states and 249 transitions. Second operand 6 states.
[2020-08-18 16:17:38,265 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-18 16:17:38,266 INFO  L93              Difference]: Finished difference Result 318 states and 465 transitions.
[2020-08-18 16:17:38,266 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-08-18 16:17:38,266 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 63
[2020-08-18 16:17:38,267 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-18 16:17:38,268 INFO  L225             Difference]: With dead ends: 318
[2020-08-18 16:17:38,269 INFO  L226             Difference]: Without dead ends: 155
[2020-08-18 16:17:38,270 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56
[2020-08-18 16:17:38,270 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 155 states.
[2020-08-18 16:17:38,279 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 98.
[2020-08-18 16:17:38,279 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 98 states.
[2020-08-18 16:17:38,280 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 130 transitions.
[2020-08-18 16:17:38,280 INFO  L78                 Accepts]: Start accepts. Automaton has 98 states and 130 transitions. Word has length 63
[2020-08-18 16:17:38,281 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-18 16:17:38,281 INFO  L479      AbstractCegarLoop]: Abstraction has 98 states and 130 transitions.
[2020-08-18 16:17:38,281 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-08-18 16:17:38,281 INFO  L276                IsEmpty]: Start isEmpty. Operand 98 states and 130 transitions.
[2020-08-18 16:17:38,283 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 64
[2020-08-18 16:17:38,283 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-18 16:17:38,284 INFO  L422         BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-18 16:17:38,284 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2020-08-18 16:17:38,284 INFO  L427      AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-18 16:17:38,284 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-18 16:17:38,285 INFO  L82        PathProgramCache]: Analyzing trace with hash -1192820603, now seen corresponding path program 1 times
[2020-08-18 16:17:38,285 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-18 16:17:38,285 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1700790046]
[2020-08-18 16:17:38,285 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-18 16:17:38,309 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-08-18 16:17:38,315 INFO  L174   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-08-18 16:17:38,315 INFO  L520         BasicCegarLoop]: Counterexample might be feasible
[2020-08-18 16:17:38,322 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2020-08-18 16:17:38,348 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 04:17:38 BoogieIcfgContainer
[2020-08-18 16:17:38,348 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-08-18 16:17:38,351 INFO  L168              Benchmark]: Toolchain (without parser) took 3587.22 ms. Allocated memory was 148.4 MB in the beginning and 243.3 MB in the end (delta: 94.9 MB). Free memory was 104.2 MB in the beginning and 128.3 MB in the end (delta: -24.1 MB). Peak memory consumption was 70.8 MB. Max. memory is 7.1 GB.
[2020-08-18 16:17:38,352 INFO  L168              Benchmark]: CDTParser took 0.70 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
[2020-08-18 16:17:38,357 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 273.14 ms. Allocated memory is still 148.4 MB. Free memory was 104.0 MB in the beginning and 93.7 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB.
[2020-08-18 16:17:38,358 INFO  L168              Benchmark]: Boogie Preprocessor took 132.27 ms. Allocated memory was 148.4 MB in the beginning and 203.9 MB in the end (delta: 55.6 MB). Free memory was 93.7 MB in the beginning and 181.9 MB in the end (delta: -88.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB.
[2020-08-18 16:17:38,358 INFO  L168              Benchmark]: RCFGBuilder took 417.12 ms. Allocated memory is still 203.9 MB. Free memory was 181.9 MB in the beginning and 162.4 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB.
[2020-08-18 16:17:38,359 INFO  L168              Benchmark]: TraceAbstraction took 2759.97 ms. Allocated memory was 203.9 MB in the beginning and 243.3 MB in the end (delta: 39.3 MB). Free memory was 161.8 MB in the beginning and 128.3 MB in the end (delta: 33.5 MB). Peak memory consumption was 72.8 MB. Max. memory is 7.1 GB.
[2020-08-18 16:17:38,362 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.70 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 273.14 ms. Allocated memory is still 148.4 MB. Free memory was 104.0 MB in the beginning and 93.7 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 132.27 ms. Allocated memory was 148.4 MB in the beginning and 203.9 MB in the end (delta: 55.6 MB). Free memory was 93.7 MB in the beginning and 181.9 MB in the end (delta: -88.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 417.12 ms. Allocated memory is still 203.9 MB. Free memory was 181.9 MB in the beginning and 162.4 MB in the end (delta: 19.4 MB). Peak memory consumption was 19.4 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 2759.97 ms. Allocated memory was 203.9 MB in the beginning and 243.3 MB in the end (delta: 39.3 MB). Free memory was 161.8 MB in the beginning and 128.3 MB in the end (delta: 33.5 MB). Peak memory consumption was 72.8 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable
    a call of __VERIFIER_error() is reachable
We found a FailurePath: 
[L9]                int ldv_mutex = 1;
[L11]               int open_called = 0;
[L74]               int ldv_s_misc_fops_file_operations = 0;
[L75]   CALL        my_init()
[L69]               open_called = 0
[L70]               return 0;
[L75]   RET         my_init()
[L76]   COND TRUE   __VERIFIER_nondet_int()
[L80]               case 0:
[L81]   COND TRUE   ldv_s_misc_fops_file_operations==0
[L82]   CALL        misc_open()
[L57]   COND TRUE   __VERIFIER_nondet_int()
[L59]               return 1;
[L82]   RET         misc_open()
[L83]               ldv_s_misc_fops_file_operations++
[L76]   COND TRUE   __VERIFIER_nondet_int()
[L80]               case 0:
[L88]               case 1:
[L89]   COND TRUE   ldv_s_misc_fops_file_operations==1
[L90]   CALL        misc_read()
[L52]               return 0;
[L90]   RET         misc_read()
[L91]               ldv_s_misc_fops_file_operations++
[L76]   COND TRUE   __VERIFIER_nondet_int()
[L80]               case 0:
[L88]               case 1:
[L96]               case 2:
[L97]   COND TRUE   ldv_s_misc_fops_file_operations==2
[L98]   CALL        misc_llseek()
[L48]               return 0;
[L98]   RET         misc_llseek()
[L99]               ldv_s_misc_fops_file_operations++
[L76]   COND TRUE   __VERIFIER_nondet_int()
[L80]               case 0:
[L88]               case 1:
[L96]               case 2:
[L104]              case 3:
[L105]  COND TRUE   ldv_s_misc_fops_file_operations==3
[L106]  CALL        misc_release()
[L34]   COND FALSE  !(\read(open_called))
[L41]   CALL        mutex_lock()
[L16]               (ldv_mutex == 1) ? 0 : __blast_assert()
[L17]               ldv_mutex = 2
[L41]   RET         mutex_lock()
[L42]   CALL        mutex_lock()
[L16]               (ldv_mutex == 1) ? 0 : __blast_assert()
[L16]   CALL        __blast_assert()
[L4]                __VERIFIER_error()

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 12 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.6s, OverallIterations: 7, TraceHistogramMax: 4, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 408 SDtfs, 599 SDslu, 753 SDs, 0 SdLazy, 707 SolverSat, 229 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 79 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=174occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 321 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 279 NumberOfCodeBlocks, 279 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 210 ConstructedInterpolants, 0 QuantifiedInterpolants, 16438 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 25/39 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate proved your program to be incorrect!
Received shutdown request...