/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 -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/systemc/pc_sfifo_1.cil-1.c


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


This is Ultimate 0.1.25-72570d3
[2020-08-22 19:50:48,846 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-08-22 19:50:48,849 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-08-22 19:50:48,874 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-08-22 19:50:48,874 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-08-22 19:50:48,875 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-08-22 19:50:48,877 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-08-22 19:50:48,879 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-08-22 19:50:48,880 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-08-22 19:50:48,881 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-08-22 19:50:48,883 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-08-22 19:50:48,884 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-08-22 19:50:48,884 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-08-22 19:50:48,885 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-08-22 19:50:48,886 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-08-22 19:50:48,888 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-08-22 19:50:48,889 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-08-22 19:50:48,890 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-08-22 19:50:48,892 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-08-22 19:50:48,894 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-08-22 19:50:48,895 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-08-22 19:50:48,897 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-08-22 19:50:48,898 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-08-22 19:50:48,899 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-08-22 19:50:48,901 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-08-22 19:50:48,902 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-08-22 19:50:48,902 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-08-22 19:50:48,903 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-08-22 19:50:48,903 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-08-22 19:50:48,905 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-08-22 19:50:48,905 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-08-22 19:50:48,906 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-08-22 19:50:48,906 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-08-22 19:50:48,907 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-08-22 19:50:48,908 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-08-22 19:50:48,908 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-08-22 19:50:48,909 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-08-22 19:50:48,909 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-08-22 19:50:48,910 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-08-22 19:50:48,911 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-08-22 19:50:48,911 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-08-22 19:50:48,912 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf
[2020-08-22 19:50:48,922 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-08-22 19:50:48,922 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-08-22 19:50:48,924 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-08-22 19:50:48,924 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-08-22 19:50:48,924 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-08-22 19:50:48,925 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-08-22 19:50:48,925 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-08-22 19:50:48,925 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-08-22 19:50:48,925 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-08-22 19:50:48,925 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-08-22 19:50:48,925 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-08-22 19:50:48,926 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-08-22 19:50:48,926 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-08-22 19:50:48,926 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-08-22 19:50:48,926 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-08-22 19:50:48,926 INFO  L138        SettingsManager]:  * Size of a code block=SingleStatement
[2020-08-22 19:50:48,927 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-08-22 19:50:48,927 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-08-22 19:50:48,927 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-08-22 19:50:48,927 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-08-22 19:50:48,927 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=AcceleratedInterpolation
[2020-08-22 19:50:48,928 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-08-22 19:50:48,928 INFO  L138        SettingsManager]:  * Use separate solver for trace checks=false
[2020-08-22 19:50:49,235 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-08-22 19:50:49,250 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-08-22 19:50:49,254 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-08-22 19:50:49,256 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-08-22 19:50:49,257 INFO  L275        PluginConnector]: CDTParser initialized
[2020-08-22 19:50:49,257 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/pc_sfifo_1.cil-1.c
[2020-08-22 19:50:49,347 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dda4cd337/fa64d774cea64d50901b9667278afc68/FLAG215791031
[2020-08-22 19:50:49,916 INFO  L306              CDTParser]: Found 1 translation units.
[2020-08-22 19:50:49,916 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/pc_sfifo_1.cil-1.c
[2020-08-22 19:50:49,927 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dda4cd337/fa64d774cea64d50901b9667278afc68/FLAG215791031
[2020-08-22 19:50:50,241 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dda4cd337/fa64d774cea64d50901b9667278afc68
[2020-08-22 19:50:50,253 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-08-22 19:50:50,255 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-08-22 19:50:50,256 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-08-22 19:50:50,257 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-08-22 19:50:50,261 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-08-22 19:50:50,262 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:50:50" (1/1) ...
[2020-08-22 19:50:50,265 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2720981c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:50:50, skipping insertion in model container
[2020-08-22 19:50:50,266 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:50:50" (1/1) ...
[2020-08-22 19:50:50,276 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-08-22 19:50:50,333 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-08-22 19:50:50,570 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-08-22 19:50:50,576 INFO  L203         MainTranslator]: Completed pre-run
[2020-08-22 19:50:50,610 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-08-22 19:50:50,629 INFO  L208         MainTranslator]: Completed translation
[2020-08-22 19:50:50,629 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:50:50 WrapperNode
[2020-08-22 19:50:50,630 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-08-22 19:50:50,630 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-08-22 19:50:50,631 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-08-22 19:50:50,631 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-08-22 19:50:50,729 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:50:50" (1/1) ...
[2020-08-22 19:50:50,730 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:50:50" (1/1) ...
[2020-08-22 19:50:50,739 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:50:50" (1/1) ...
[2020-08-22 19:50:50,739 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:50:50" (1/1) ...
[2020-08-22 19:50:50,748 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:50:50" (1/1) ...
[2020-08-22 19:50:50,760 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:50:50" (1/1) ...
[2020-08-22 19:50:50,763 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:50:50" (1/1) ...
[2020-08-22 19:50:50,769 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-08-22 19:50:50,770 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-08-22 19:50:50,770 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-08-22 19:50:50,770 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-08-22 19:50:50,771 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:50:50" (1/1) ...
No working directory specified, using /storage/repos/ultimate/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
[2020-08-22 19:50:50,832 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-08-22 19:50:50,833 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-08-22 19:50:50,833 INFO  L138     BoogieDeclarations]: Found implementation of procedure error
[2020-08-22 19:50:50,833 INFO  L138     BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered
[2020-08-22 19:50:50,833 INFO  L138     BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered
[2020-08-22 19:50:50,834 INFO  L138     BoogieDeclarations]: Found implementation of procedure immediate_notify_threads
[2020-08-22 19:50:50,834 INFO  L138     BoogieDeclarations]: Found implementation of procedure do_write_p
[2020-08-22 19:50:50,834 INFO  L138     BoogieDeclarations]: Found implementation of procedure do_read_c
[2020-08-22 19:50:50,834 INFO  L138     BoogieDeclarations]: Found implementation of procedure init_threads
[2020-08-22 19:50:50,834 INFO  L138     BoogieDeclarations]: Found implementation of procedure exists_runnable_thread
[2020-08-22 19:50:50,834 INFO  L138     BoogieDeclarations]: Found implementation of procedure eval
[2020-08-22 19:50:50,835 INFO  L138     BoogieDeclarations]: Found implementation of procedure stop_simulation
[2020-08-22 19:50:50,835 INFO  L138     BoogieDeclarations]: Found implementation of procedure start_simulation
[2020-08-22 19:50:50,835 INFO  L138     BoogieDeclarations]: Found implementation of procedure init_model
[2020-08-22 19:50:50,835 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-08-22 19:50:50,835 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-08-22 19:50:50,835 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-08-22 19:50:50,836 INFO  L130     BoogieDeclarations]: Found specification of procedure error
[2020-08-22 19:50:50,836 INFO  L130     BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered
[2020-08-22 19:50:50,836 INFO  L130     BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered
[2020-08-22 19:50:50,836 INFO  L130     BoogieDeclarations]: Found specification of procedure immediate_notify_threads
[2020-08-22 19:50:50,836 INFO  L130     BoogieDeclarations]: Found specification of procedure do_write_p
[2020-08-22 19:50:50,837 INFO  L130     BoogieDeclarations]: Found specification of procedure do_read_c
[2020-08-22 19:50:50,837 INFO  L130     BoogieDeclarations]: Found specification of procedure init_threads
[2020-08-22 19:50:50,837 INFO  L130     BoogieDeclarations]: Found specification of procedure exists_runnable_thread
[2020-08-22 19:50:50,837 INFO  L130     BoogieDeclarations]: Found specification of procedure eval
[2020-08-22 19:50:50,842 INFO  L130     BoogieDeclarations]: Found specification of procedure stop_simulation
[2020-08-22 19:50:50,842 INFO  L130     BoogieDeclarations]: Found specification of procedure start_simulation
[2020-08-22 19:50:50,842 INFO  L130     BoogieDeclarations]: Found specification of procedure init_model
[2020-08-22 19:50:50,842 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-08-22 19:50:50,843 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-08-22 19:50:50,843 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-08-22 19:50:51,344 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-08-22 19:50:51,345 INFO  L295             CfgBuilder]: Removed 4 assume(true) statements.
[2020-08-22 19:50:51,352 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:50:51 BoogieIcfgContainer
[2020-08-22 19:50:51,353 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-08-22 19:50:51,354 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-08-22 19:50:51,354 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-08-22 19:50:51,358 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-08-22 19:50:51,358 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 07:50:50" (1/3) ...
[2020-08-22 19:50:51,359 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@241f1955 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:50:51, skipping insertion in model container
[2020-08-22 19:50:51,360 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:50:50" (2/3) ...
[2020-08-22 19:50:51,360 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@241f1955 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:50:51, skipping insertion in model container
[2020-08-22 19:50:51,360 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:50:51" (3/3) ...
[2020-08-22 19:50:51,362 INFO  L109   eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-1.c
[2020-08-22 19:50:51,374 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-08-22 19:50:51,383 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-08-22 19:50:51,398 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-08-22 19:50:51,422 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-08-22 19:50:51,422 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-08-22 19:50:51,422 INFO  L377      AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation
[2020-08-22 19:50:51,422 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-08-22 19:50:51,423 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-08-22 19:50:51,423 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-08-22 19:50:51,423 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-08-22 19:50:51,424 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-08-22 19:50:51,446 INFO  L276                IsEmpty]: Start isEmpty. Operand 183 states.
[2020-08-22 19:50:51,461 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 69
[2020-08-22 19:50:51,461 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-22 19:50:51,462 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, 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]
[2020-08-22 19:50:51,463 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-22 19:50:51,469 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-22 19:50:51,470 INFO  L82        PathProgramCache]: Analyzing trace with hash 1380535506, now seen corresponding path program 1 times
[2020-08-22 19:50:51,477 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-22 19:50:51,478 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [27352757]
[2020-08-22 19:50:51,478 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-22 19:50:51,541 INFO  L288   leratedInterpolation]: No loops in this trace, falling back to nested interpolation
[2020-08-22 19:50:51,674 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-08-22 19:50:51,675 INFO  L221             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-08-22 19:50:51,791 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-08-22 19:50:51,791 INFO  L221             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-08-22 19:50:51,859 INFO  L174   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-08-22 19:50:51,860 INFO  L520         BasicCegarLoop]: Counterexample might be feasible
[2020-08-22 19:50:51,862 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-08-22 19:50:51,891 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 07:50:51 BoogieIcfgContainer
[2020-08-22 19:50:51,892 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-08-22 19:50:51,897 INFO  L168              Benchmark]: Toolchain (without parser) took 1638.85 ms. Allocated memory was 137.4 MB in the beginning and 200.3 MB in the end (delta: 62.9 MB). Free memory was 101.4 MB in the beginning and 122.8 MB in the end (delta: -21.3 MB). Peak memory consumption was 41.6 MB. Max. memory is 7.1 GB.
[2020-08-22 19:50:51,899 INFO  L168              Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 137.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB.
[2020-08-22 19:50:51,900 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 373.80 ms. Allocated memory is still 137.4 MB. Free memory was 101.2 MB in the beginning and 88.9 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB.
[2020-08-22 19:50:51,901 INFO  L168              Benchmark]: Boogie Preprocessor took 139.18 ms. Allocated memory was 137.4 MB in the beginning and 200.3 MB in the end (delta: 62.9 MB). Free memory was 88.9 MB in the beginning and 177.5 MB in the end (delta: -88.6 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB.
[2020-08-22 19:50:51,902 INFO  L168              Benchmark]: RCFGBuilder took 582.84 ms. Allocated memory is still 200.3 MB. Free memory was 177.5 MB in the beginning and 145.0 MB in the end (delta: 32.5 MB). Peak memory consumption was 32.5 MB. Max. memory is 7.1 GB.
[2020-08-22 19:50:51,904 INFO  L168              Benchmark]: TraceAbstraction took 537.57 ms. Allocated memory is still 200.3 MB. Free memory was 144.3 MB in the beginning and 122.8 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB.
[2020-08-22 19:50:51,912 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.29 ms. Allocated memory is still 137.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 373.80 ms. Allocated memory is still 137.4 MB. Free memory was 101.2 MB in the beginning and 88.9 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.3 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 139.18 ms. Allocated memory was 137.4 MB in the beginning and 200.3 MB in the end (delta: 62.9 MB). Free memory was 88.9 MB in the beginning and 177.5 MB in the end (delta: -88.6 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 582.84 ms. Allocated memory is still 200.3 MB. Free memory was 177.5 MB in the beginning and 145.0 MB in the end (delta: 32.5 MB). Peak memory consumption was 32.5 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 537.57 ms. Allocated memory is still 200.3 MB. Free memory was 144.3 MB in the beginning and 122.8 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.5 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - CounterExampleResult [Line: 9]: a call of __VERIFIER_error() is reachable
    a call of __VERIFIER_error() is reachable
We found a FailurePath: 
[L14]               int q_buf_0  ;
[L15]               int q_free  ;
[L16]               int q_read_ev  ;
[L17]               int q_write_ev  ;
[L18]               int p_num_write  ;
[L19]               int p_last_write  ;
[L20]               int p_dw_st  ;
[L21]               int p_dw_pc  ;
[L22]               int p_dw_i  ;
[L23]               int c_num_read  ;
[L24]               int c_last_read  ;
[L25]               int c_dr_st  ;
[L26]               int c_dr_pc  ;
[L27]               int c_dr_i  ;
[L134]              static int a_t  ;
[L350]              int __retres1 ;
[L354]  CALL        init_model()
[L336]              q_free = 1
[L337]              q_write_ev = 2
[L338]              q_read_ev = q_write_ev
[L339]              p_num_write = 0
[L340]              p_dw_pc = 0
[L341]              p_dw_i = 1
[L342]              c_num_read = 0
[L343]              c_dr_pc = 0
[L344]              c_dr_i = 1
[L354]  RET         init_model()
[L355]  CALL        start_simulation()
[L304]              int kernel_st ;
[L305]              int tmp ;
[L309]              kernel_st = 0
[L310]  CALL        init_threads()
[L196]  COND TRUE   (int )p_dw_i == 1
[L197]              p_dw_st = 0
[L201]  COND TRUE   (int )c_dr_i == 1
[L202]              c_dr_st = 0
[L310]  RET         init_threads()
[L313]  COND TRUE   1
[L316]              kernel_st = 1
[L317]  CALL        eval()
[L231]              int tmp ;
[L232]              int tmp___0 ;
[L233]              int tmp___1 ;
[L237]  COND TRUE   1
[L240]  CALL, EXPR  exists_runnable_thread()
[L211]              int __retres1 ;
[L214]  COND TRUE   (int )p_dw_st == 0
[L215]              __retres1 = 1
[L227]              return (__retres1);
[L240]  RET, EXPR   exists_runnable_thread()
[L240]              tmp___1 = exists_runnable_thread()
[L242]  COND TRUE   \read(tmp___1)
[L247]  COND TRUE   (int )p_dw_st == 0
[L249]              tmp = __VERIFIER_nondet_int()
[L251]  COND FALSE  !(\read(tmp))
[L257]  CALL        error()
[L9]                __VERIFIER_error()

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 15 procedures, 183 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=183occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...