/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 --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration false -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-c90d42b
[2020-09-24 14:58:30,005 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-09-24 14:58:30,008 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-09-24 14:58:30,061 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-09-24 14:58:30,062 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-09-24 14:58:30,073 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-09-24 14:58:30,075 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2020-09-24 14:58:30,084 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-09-24 14:58:30,085 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-09-24 14:58:30,087 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-09-24 14:58:30,088 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-09-24 14:58:30,093 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-09-24 14:58:30,096 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-09-24 14:58:30,098 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-09-24 14:58:30,100 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-09-24 14:58:30,103 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-09-24 14:58:30,105 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-09-24 14:58:30,112 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-09-24 14:58:30,116 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-09-24 14:58:30,117 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-09-24 14:58:30,118 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-09-24 14:58:30,119 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-09-24 14:58:30,124 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-09-24 14:58:30,125 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-09-24 14:58:30,125 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-09-24 14:58:30,128 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-09-24 14:58:30,129 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-09-24 14:58:30,131 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-09-24 14:58:30,132 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-09-24 14:58:30,133 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-09-24 14:58:30,134 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-09-24 14:58:30,135 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-09-24 14:58:30,137 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-09-24 14:58:30,137 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
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[2020-09-24 14:58:30,138 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
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[2020-09-24 14:58:30,142 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-09-24 14:58:30,144 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
[2020-09-24 14:58:30,197 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-09-24 14:58:30,198 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-09-24 14:58:30,199 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-09-24 14:58:30,199 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-09-24 14:58:30,199 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-09-24 14:58:30,200 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-09-24 14:58:30,200 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-09-24 14:58:30,200 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-09-24 14:58:30,200 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-09-24 14:58:30,201 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-09-24 14:58:30,201 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-09-24 14:58:30,201 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-09-24 14:58:30,201 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-09-24 14:58:30,201 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-09-24 14:58:30,202 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-09-24 14:58:30,202 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-09-24 14:58:30,202 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-09-24 14:58:30,202 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-09-24 14:58:30,203 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-09-24 14:58:30,203 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-09-24 14:58:30,203 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-09-24 14:58:30,203 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-09-24 14:58:30,204 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-09-24 14:58:30,204 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-09-24 14:58:30,204 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-09-24 14:58:30,204 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-09-24 14:58:30,204 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-09-24 14:58:30,205 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-09-24 14:58:30,205 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-09-24 14:58:30,205 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.rcfgbuilder: Size of a code block -> SingleStatement
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false
[2020-09-24 14:58:30,646 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-09-24 14:58:30,663 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-09-24 14:58:30,668 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-09-24 14:58:30,669 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-09-24 14:58:30,670 INFO  L275        PluginConnector]: CDTParser initialized
[2020-09-24 14:58:30,671 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/stateful_check.c
[2020-09-24 14:58:30,763 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a45f8cfae/e39adfb308b24911b0c399ab8951352c/FLAG95061f2f4
[2020-09-24 14:58:31,314 INFO  L306              CDTParser]: Found 1 translation units.
[2020-09-24 14:58:31,315 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/stateful_check.c
[2020-09-24 14:58:31,329 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a45f8cfae/e39adfb308b24911b0c399ab8951352c/FLAG95061f2f4
[2020-09-24 14:58:31,655 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a45f8cfae/e39adfb308b24911b0c399ab8951352c
[2020-09-24 14:58:31,671 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-09-24 14:58:31,677 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-09-24 14:58:31,678 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-09-24 14:58:31,678 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-09-24 14:58:31,682 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-09-24 14:58:31,684 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:58:31" (1/1) ...
[2020-09-24 14:58:31,688 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35de7d66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:58:31, skipping insertion in model container
[2020-09-24 14:58:31,688 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:58:31" (1/1) ...
[2020-09-24 14:58:31,696 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-09-24 14:58:31,719 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-09-24 14:58:31,944 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 14:58:31,950 INFO  L203         MainTranslator]: Completed pre-run
[2020-09-24 14:58:31,976 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-09-24 14:58:31,997 INFO  L208         MainTranslator]: Completed translation
[2020-09-24 14:58:31,997 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:58:31 WrapperNode
[2020-09-24 14:58:31,998 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-09-24 14:58:31,999 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-09-24 14:58:31,999 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-09-24 14:58:31,999 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-09-24 14:58:32,017 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:58:31" (1/1) ...
[2020-09-24 14:58:32,017 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:58:31" (1/1) ...
[2020-09-24 14:58:32,097 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:58:31" (1/1) ...
[2020-09-24 14:58:32,099 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:58:31" (1/1) ...
[2020-09-24 14:58:32,105 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:58:31" (1/1) ...
[2020-09-24 14:58:32,113 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:58:31" (1/1) ...
[2020-09-24 14:58:32,115 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:58:31" (1/1) ...
[2020-09-24 14:58:32,117 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-09-24 14:58:32,118 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-09-24 14:58:32,118 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-09-24 14:58:32,118 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-09-24 14:58:32,120 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:58:31" (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
[2020-09-24 14:58:32,188 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-09-24 14:58:32,189 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-09-24 14:58:32,189 INFO  L138     BoogieDeclarations]: Found implementation of procedure __blast_assert
[2020-09-24 14:58:32,189 INFO  L138     BoogieDeclarations]: Found implementation of procedure mutex_lock
[2020-09-24 14:58:32,189 INFO  L138     BoogieDeclarations]: Found implementation of procedure mutex_unlock
[2020-09-24 14:58:32,190 INFO  L138     BoogieDeclarations]: Found implementation of procedure check_final_state
[2020-09-24 14:58:32,190 INFO  L138     BoogieDeclarations]: Found implementation of procedure misc_release
[2020-09-24 14:58:32,190 INFO  L138     BoogieDeclarations]: Found implementation of procedure misc_llseek
[2020-09-24 14:58:32,190 INFO  L138     BoogieDeclarations]: Found implementation of procedure misc_read
[2020-09-24 14:58:32,190 INFO  L138     BoogieDeclarations]: Found implementation of procedure misc_open
[2020-09-24 14:58:32,190 INFO  L138     BoogieDeclarations]: Found implementation of procedure my_init
[2020-09-24 14:58:32,191 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-09-24 14:58:32,191 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-09-24 14:58:32,191 INFO  L130     BoogieDeclarations]: Found specification of procedure __blast_assert
[2020-09-24 14:58:32,191 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-09-24 14:58:32,192 INFO  L130     BoogieDeclarations]: Found specification of procedure mutex_lock
[2020-09-24 14:58:32,192 INFO  L130     BoogieDeclarations]: Found specification of procedure mutex_unlock
[2020-09-24 14:58:32,192 INFO  L130     BoogieDeclarations]: Found specification of procedure check_final_state
[2020-09-24 14:58:32,192 INFO  L130     BoogieDeclarations]: Found specification of procedure misc_release
[2020-09-24 14:58:32,193 INFO  L130     BoogieDeclarations]: Found specification of procedure misc_llseek
[2020-09-24 14:58:32,193 INFO  L130     BoogieDeclarations]: Found specification of procedure misc_read
[2020-09-24 14:58:32,193 INFO  L130     BoogieDeclarations]: Found specification of procedure misc_open
[2020-09-24 14:58:32,193 INFO  L130     BoogieDeclarations]: Found specification of procedure my_init
[2020-09-24 14:58:32,193 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-09-24 14:58:32,193 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-09-24 14:58:32,194 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-09-24 14:58:32,586 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-09-24 14:58:32,586 INFO  L295             CfgBuilder]: Removed 1 assume(true) statements.
[2020-09-24 14:58:32,593 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:58:32 BoogieIcfgContainer
[2020-09-24 14:58:32,593 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-09-24 14:58:32,595 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-09-24 14:58:32,595 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-09-24 14:58:32,598 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-09-24 14:58:32,598 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 02:58:31" (1/3) ...
[2020-09-24 14:58:32,599 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62bd4433 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:58:32, skipping insertion in model container
[2020-09-24 14:58:32,599 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:58:31" (2/3) ...
[2020-09-24 14:58:32,599 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62bd4433 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:58:32, skipping insertion in model container
[2020-09-24 14:58:32,599 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:58:32" (3/3) ...
[2020-09-24 14:58:32,601 INFO  L109   eAbstractionObserver]: Analyzing ICFG stateful_check.c
[2020-09-24 14:58:32,611 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-09-24 14:58:32,620 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-09-24 14:58:32,642 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-09-24 14:58:32,672 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-09-24 14:58:32,672 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-09-24 14:58:32,673 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-09-24 14:58:32,673 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-09-24 14:58:32,673 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-09-24 14:58:32,673 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-09-24 14:58:32,673 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-09-24 14:58:32,673 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-09-24 14:58:32,698 INFO  L276                IsEmpty]: Start isEmpty. Operand 105 states.
[2020-09-24 14:58:32,705 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2020-09-24 14:58:32,705 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 14:58:32,707 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 14:58:32,707 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 14:58:32,714 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 14:58:32,714 INFO  L82        PathProgramCache]: Analyzing trace with hash 1008214113, now seen corresponding path program 1 times
[2020-09-24 14:58:32,724 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 14:58:32,724 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1744272263]
[2020-09-24 14:58:32,725 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 14:58:32,835 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:58:32,924 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 14:58:32,928 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:58:32,965 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2020-09-24 14:58:32,969 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:58:32,982 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 14:58:32,985 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1744272263]
[2020-09-24 14:58:32,988 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 14:58:32,989 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-09-24 14:58:32,991 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129884187]
[2020-09-24 14:58:32,997 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2020-09-24 14:58:32,997 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 14:58:33,011 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2020-09-24 14:58:33,012 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2020-09-24 14:58:33,014 INFO  L87              Difference]: Start difference. First operand 105 states. Second operand 4 states.
[2020-09-24 14:58:33,244 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 14:58:33,244 INFO  L93              Difference]: Finished difference Result 199 states and 244 transitions.
[2020-09-24 14:58:33,245 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2020-09-24 14:58:33,247 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 19
[2020-09-24 14:58:33,248 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 14:58:33,264 INFO  L225             Difference]: With dead ends: 199
[2020-09-24 14:58:33,265 INFO  L226             Difference]: Without dead ends: 101
[2020-09-24 14:58:33,271 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
[2020-09-24 14:58:33,291 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 101 states.
[2020-09-24 14:58:33,328 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 96.
[2020-09-24 14:58:33,330 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 96 states.
[2020-09-24 14:58:33,333 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions.
[2020-09-24 14:58:33,335 INFO  L78                 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 19
[2020-09-24 14:58:33,336 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 14:58:33,336 INFO  L479      AbstractCegarLoop]: Abstraction has 96 states and 111 transitions.
[2020-09-24 14:58:33,336 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2020-09-24 14:58:33,337 INFO  L276                IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions.
[2020-09-24 14:58:33,338 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2020-09-24 14:58:33,338 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 14:58:33,338 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]
[2020-09-24 14:58:33,339 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-09-24 14:58:33,339 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 14:58:33,339 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 14:58:33,340 INFO  L82        PathProgramCache]: Analyzing trace with hash 837576233, now seen corresponding path program 1 times
[2020-09-24 14:58:33,340 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 14:58:33,340 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839546475]
[2020-09-24 14:58:33,341 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 14:58:33,360 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:58:33,414 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 14:58:33,418 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:58:33,463 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2020-09-24 14:58:33,470 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:58:33,481 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 14:58:33,482 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839546475]
[2020-09-24 14:58:33,482 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 14:58:33,484 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-09-24 14:58:33,485 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76446789]
[2020-09-24 14:58:33,487 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-09-24 14:58:33,487 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 14:58:33,489 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-09-24 14:58:33,490 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-09-24 14:58:33,490 INFO  L87              Difference]: Start difference. First operand 96 states and 111 transitions. Second operand 5 states.
[2020-09-24 14:58:33,810 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 14:58:33,811 INFO  L93              Difference]: Finished difference Result 171 states and 202 transitions.
[2020-09-24 14:58:33,811 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-09-24 14:58:33,811 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 21
[2020-09-24 14:58:33,812 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 14:58:33,815 INFO  L225             Difference]: With dead ends: 171
[2020-09-24 14:58:33,815 INFO  L226             Difference]: Without dead ends: 164
[2020-09-24 14:58:33,817 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2020-09-24 14:58:33,818 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 164 states.
[2020-09-24 14:58:33,841 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 160.
[2020-09-24 14:58:33,841 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 160 states.
[2020-09-24 14:58:33,844 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 190 transitions.
[2020-09-24 14:58:33,844 INFO  L78                 Accepts]: Start accepts. Automaton has 160 states and 190 transitions. Word has length 21
[2020-09-24 14:58:33,845 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 14:58:33,845 INFO  L479      AbstractCegarLoop]: Abstraction has 160 states and 190 transitions.
[2020-09-24 14:58:33,845 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-09-24 14:58:33,845 INFO  L276                IsEmpty]: Start isEmpty. Operand 160 states and 190 transitions.
[2020-09-24 14:58:33,847 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 39
[2020-09-24 14:58:33,847 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 14:58:33,848 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, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 14:58:33,848 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-09-24 14:58:33,848 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 14:58:33,848 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 14:58:33,849 INFO  L82        PathProgramCache]: Analyzing trace with hash -1006142192, now seen corresponding path program 1 times
[2020-09-24 14:58:33,849 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 14:58:33,849 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [22459617]
[2020-09-24 14:58:33,849 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 14:58:33,873 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:58:33,914 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 14:58:33,916 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:58:33,932 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2020-09-24 14:58:33,934 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:58:33,945 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29
[2020-09-24 14:58:33,947 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:58:33,953 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 14:58:33,953 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [22459617]
[2020-09-24 14:58:33,954 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 14:58:33,954 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-09-24 14:58:33,954 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354404464]
[2020-09-24 14:58:33,955 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-09-24 14:58:33,955 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 14:58:33,955 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-09-24 14:58:33,956 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-09-24 14:58:33,956 INFO  L87              Difference]: Start difference. First operand 160 states and 190 transitions. Second operand 6 states.
[2020-09-24 14:58:34,233 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 14:58:34,233 INFO  L93              Difference]: Finished difference Result 411 states and 514 transitions.
[2020-09-24 14:58:34,233 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2020-09-24 14:58:34,234 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 38
[2020-09-24 14:58:34,234 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 14:58:34,237 INFO  L225             Difference]: With dead ends: 411
[2020-09-24 14:58:34,238 INFO  L226             Difference]: Without dead ends: 265
[2020-09-24 14:58:34,239 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
[2020-09-24 14:58:34,241 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 265 states.
[2020-09-24 14:58:34,265 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 200.
[2020-09-24 14:58:34,265 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 200 states.
[2020-09-24 14:58:34,268 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 243 transitions.
[2020-09-24 14:58:34,269 INFO  L78                 Accepts]: Start accepts. Automaton has 200 states and 243 transitions. Word has length 38
[2020-09-24 14:58:34,270 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 14:58:34,270 INFO  L479      AbstractCegarLoop]: Abstraction has 200 states and 243 transitions.
[2020-09-24 14:58:34,270 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-09-24 14:58:34,270 INFO  L276                IsEmpty]: Start isEmpty. Operand 200 states and 243 transitions.
[2020-09-24 14:58:34,272 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 60
[2020-09-24 14:58:34,273 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 14:58:34,273 INFO  L422         BasicCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 14:58:34,273 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-09-24 14:58:34,274 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 14:58:34,274 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 14:58:34,274 INFO  L82        PathProgramCache]: Analyzing trace with hash 1762986505, now seen corresponding path program 1 times
[2020-09-24 14:58:34,274 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 14:58:34,275 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1491751624]
[2020-09-24 14:58:34,275 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 14:58:34,297 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:58:34,397 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 14:58:34,400 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:58:34,414 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2020-09-24 14:58:34,417 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:58:34,423 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2020-09-24 14:58:34,428 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:58:34,445 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50
[2020-09-24 14:58:34,447 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:58:34,461 INFO  L134       CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-09-24 14:58:34,461 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1491751624]
[2020-09-24 14:58:34,462 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-09-24 14:58:34,462 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8
[2020-09-24 14:58:34,463 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073578448]
[2020-09-24 14:58:34,464 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-09-24 14:58:34,465 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 14:58:34,465 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-09-24 14:58:34,465 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2020-09-24 14:58:34,465 INFO  L87              Difference]: Start difference. First operand 200 states and 243 transitions. Second operand 8 states.
[2020-09-24 14:58:34,928 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 14:58:34,928 INFO  L93              Difference]: Finished difference Result 573 states and 736 transitions.
[2020-09-24 14:58:34,931 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2020-09-24 14:58:34,931 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 59
[2020-09-24 14:58:34,932 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 14:58:34,939 INFO  L225             Difference]: With dead ends: 573
[2020-09-24 14:58:34,939 INFO  L226             Difference]: Without dead ends: 387
[2020-09-24 14:58:34,947 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210
[2020-09-24 14:58:34,948 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 387 states.
[2020-09-24 14:58:34,996 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 240.
[2020-09-24 14:58:34,996 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 240 states.
[2020-09-24 14:58:35,001 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 298 transitions.
[2020-09-24 14:58:35,002 INFO  L78                 Accepts]: Start accepts. Automaton has 240 states and 298 transitions. Word has length 59
[2020-09-24 14:58:35,003 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 14:58:35,004 INFO  L479      AbstractCegarLoop]: Abstraction has 240 states and 298 transitions.
[2020-09-24 14:58:35,004 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-09-24 14:58:35,004 INFO  L276                IsEmpty]: Start isEmpty. Operand 240 states and 298 transitions.
[2020-09-24 14:58:35,009 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 80
[2020-09-24 14:58:35,009 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 14:58:35,009 INFO  L422         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 14:58:35,010 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-09-24 14:58:35,010 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 14:58:35,010 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 14:58:35,011 INFO  L82        PathProgramCache]: Analyzing trace with hash -586168855, now seen corresponding path program 1 times
[2020-09-24 14:58:35,011 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 14:58:35,011 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1434286735]
[2020-09-24 14:58:35,011 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 14:58:35,050 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:58:35,105 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 14:58:35,106 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:58:35,115 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2020-09-24 14:58:35,116 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:58:35,119 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2020-09-24 14:58:35,120 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:58:35,123 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44
[2020-09-24 14:58:35,125 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:58:35,137 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70
[2020-09-24 14:58:35,138 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:58:35,147 INFO  L134       CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2020-09-24 14:58:35,148 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1434286735]
[2020-09-24 14:58:35,148 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 14:58:35,148 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8
[2020-09-24 14:58:35,148 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670942249]
[2020-09-24 14:58:35,149 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2020-09-24 14:58:35,149 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 14:58:35,150 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2020-09-24 14:58:35,150 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2020-09-24 14:58:35,150 INFO  L87              Difference]: Start difference. First operand 240 states and 298 transitions. Second operand 8 states.
[2020-09-24 14:58:35,500 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 14:58:35,501 INFO  L93              Difference]: Finished difference Result 733 states and 952 transitions.
[2020-09-24 14:58:35,501 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. 
[2020-09-24 14:58:35,501 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 79
[2020-09-24 14:58:35,502 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 14:58:35,506 INFO  L225             Difference]: With dead ends: 733
[2020-09-24 14:58:35,506 INFO  L226             Difference]: Without dead ends: 507
[2020-09-24 14:58:35,507 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210
[2020-09-24 14:58:35,508 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 507 states.
[2020-09-24 14:58:35,526 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 320.
[2020-09-24 14:58:35,526 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 320 states.
[2020-09-24 14:58:35,529 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 410 transitions.
[2020-09-24 14:58:35,529 INFO  L78                 Accepts]: Start accepts. Automaton has 320 states and 410 transitions. Word has length 79
[2020-09-24 14:58:35,529 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 14:58:35,530 INFO  L479      AbstractCegarLoop]: Abstraction has 320 states and 410 transitions.
[2020-09-24 14:58:35,530 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2020-09-24 14:58:35,530 INFO  L276                IsEmpty]: Start isEmpty. Operand 320 states and 410 transitions.
[2020-09-24 14:58:35,532 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 102
[2020-09-24 14:58:35,532 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 14:58:35,533 INFO  L422         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 14:58:35,533 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-09-24 14:58:35,533 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 14:58:35,533 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 14:58:35,534 INFO  L82        PathProgramCache]: Analyzing trace with hash -1731656998, now seen corresponding path program 1 times
[2020-09-24 14:58:35,534 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 14:58:35,534 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [252315945]
[2020-09-24 14:58:35,534 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 14:58:35,560 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:58:35,606 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-09-24 14:58:35,607 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:58:35,620 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7
[2020-09-24 14:58:35,622 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:58:35,624 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21
[2020-09-24 14:58:35,625 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:58:35,627 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44
[2020-09-24 14:58:35,628 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:58:35,629 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66
[2020-09-24 14:58:35,630 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:58:35,637 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92
[2020-09-24 14:58:35,639 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-09-24 14:58:35,651 INFO  L134       CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked.
[2020-09-24 14:58:35,651 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [252315945]
[2020-09-24 14:58:35,652 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-09-24 14:58:35,652 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-09-24 14:58:35,652 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291877546]
[2020-09-24 14:58:35,653 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-09-24 14:58:35,653 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-09-24 14:58:35,653 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-09-24 14:58:35,654 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-09-24 14:58:35,654 INFO  L87              Difference]: Start difference. First operand 320 states and 410 transitions. Second operand 6 states.
[2020-09-24 14:58:35,827 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-09-24 14:58:35,827 INFO  L93              Difference]: Finished difference Result 599 states and 775 transitions.
[2020-09-24 14:58:35,828 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-09-24 14:58:35,828 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 101
[2020-09-24 14:58:35,829 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-09-24 14:58:35,831 INFO  L225             Difference]: With dead ends: 599
[2020-09-24 14:58:35,833 INFO  L226             Difference]: Without dead ends: 293
[2020-09-24 14:58:35,835 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
[2020-09-24 14:58:35,836 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 293 states.
[2020-09-24 14:58:35,845 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 172.
[2020-09-24 14:58:35,846 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 172 states.
[2020-09-24 14:58:35,847 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 211 transitions.
[2020-09-24 14:58:35,847 INFO  L78                 Accepts]: Start accepts. Automaton has 172 states and 211 transitions. Word has length 101
[2020-09-24 14:58:35,848 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-09-24 14:58:35,848 INFO  L479      AbstractCegarLoop]: Abstraction has 172 states and 211 transitions.
[2020-09-24 14:58:35,848 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-09-24 14:58:35,848 INFO  L276                IsEmpty]: Start isEmpty. Operand 172 states and 211 transitions.
[2020-09-24 14:58:35,850 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 102
[2020-09-24 14:58:35,850 INFO  L414         BasicCegarLoop]: Found error trace
[2020-09-24 14:58:35,850 INFO  L422         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-09-24 14:58:35,851 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2020-09-24 14:58:35,851 INFO  L427      AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-09-24 14:58:35,851 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-09-24 14:58:35,851 INFO  L82        PathProgramCache]: Analyzing trace with hash -1350272370, now seen corresponding path program 1 times
[2020-09-24 14:58:35,851 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-09-24 14:58:35,852 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [838039035]
[2020-09-24 14:58:35,852 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-09-24 14:58:35,879 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-09-24 14:58:35,884 INFO  L174   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-09-24 14:58:35,884 INFO  L520         BasicCegarLoop]: Counterexample might be feasible
[2020-09-24 14:58:35,892 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2020-09-24 14:58:35,915 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 02:58:35 BoogieIcfgContainer
[2020-09-24 14:58:35,916 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-09-24 14:58:35,919 INFO  L168              Benchmark]: Toolchain (without parser) took 4244.95 ms. Allocated memory was 140.0 MB in the beginning and 246.4 MB in the end (delta: 106.4 MB). Free memory was 101.8 MB in the beginning and 208.0 MB in the end (delta: -106.2 MB). Peak memory consumption was 249.6 kB. Max. memory is 7.1 GB.
[2020-09-24 14:58:35,920 INFO  L168              Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
[2020-09-24 14:58:35,921 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 320.31 ms. Allocated memory is still 140.0 MB. Free memory was 101.1 MB in the beginning and 90.9 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB.
[2020-09-24 14:58:35,922 INFO  L168              Benchmark]: Boogie Preprocessor took 119.17 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 90.9 MB in the beginning and 181.5 MB in the end (delta: -90.6 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB.
[2020-09-24 14:58:35,923 INFO  L168              Benchmark]: RCFGBuilder took 475.44 ms. Allocated memory is still 203.4 MB. Free memory was 181.5 MB in the beginning and 159.8 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB.
[2020-09-24 14:58:35,923 INFO  L168              Benchmark]: TraceAbstraction took 3321.20 ms. Allocated memory was 203.4 MB in the beginning and 246.4 MB in the end (delta: 43.0 MB). Free memory was 159.8 MB in the beginning and 208.0 MB in the end (delta: -48.2 MB). There was no memory consumed. Max. memory is 7.1 GB.
[2020-09-24 14:58:35,927 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.19 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 320.31 ms. Allocated memory is still 140.0 MB. Free memory was 101.1 MB in the beginning and 90.9 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 119.17 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 90.9 MB in the beginning and 181.5 MB in the end (delta: -90.6 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 475.44 ms. Allocated memory is still 203.4 MB. Free memory was 181.5 MB in the beginning and 159.8 MB in the end (delta: 21.7 MB). Peak memory consumption was 21.7 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 3321.20 ms. Allocated memory was 203.4 MB in the beginning and 246.4 MB in the end (delta: 43.0 MB). Free memory was 159.8 MB in the beginning and 208.0 MB in the end (delta: -48.2 MB). There was no memory consumed. 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, 105 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.2s, OverallIterations: 7, TraceHistogramMax: 4, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 592 SDtfs, 888 SDslu, 1282 SDs, 0 SdLazy, 768 SolverSat, 259 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=320occurred 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, 529 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 418 NumberOfCodeBlocks, 418 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 311 ConstructedInterpolants, 0 QuantifiedInterpolants, 34423 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 72/78 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...