/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-token-2.i


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


This is Ultimate 0.1.25-177f698
[2020-08-21 15:45:24,941 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-08-21 15:45:24,945 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-08-21 15:45:24,988 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-08-21 15:45:24,989 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-08-21 15:45:25,002 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-08-21 15:45:25,004 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-08-21 15:45:25,007 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-08-21 15:45:25,010 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-08-21 15:45:25,013 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-08-21 15:45:25,014 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-08-21 15:45:25,016 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-08-21 15:45:25,016 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-08-21 15:45:25,022 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-08-21 15:45:25,024 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-08-21 15:45:25,025 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-08-21 15:45:25,027 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-08-21 15:45:25,028 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-08-21 15:45:25,031 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-08-21 15:45:25,038 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-08-21 15:45:25,042 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-08-21 15:45:25,043 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-08-21 15:45:25,044 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-08-21 15:45:25,045 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-08-21 15:45:25,051 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-08-21 15:45:25,051 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-08-21 15:45:25,051 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-08-21 15:45:25,054 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-08-21 15:45:25,055 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-08-21 15:45:25,057 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-08-21 15:45:25,058 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-08-21 15:45:25,059 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-08-21 15:45:25,059 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-08-21 15:45:25,060 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-08-21 15:45:25,061 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-08-21 15:45:25,061 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-08-21 15:45:25,062 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-08-21 15:45:25,062 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-08-21 15:45:25,062 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-08-21 15:45:25,063 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-08-21 15:45:25,064 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-08-21 15:45:25,065 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-08-21 15:45:25,110 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-08-21 15:45:25,110 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-08-21 15:45:25,112 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-08-21 15:45:25,113 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-08-21 15:45:25,113 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-08-21 15:45:25,113 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-08-21 15:45:25,113 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-08-21 15:45:25,113 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-08-21 15:45:25,114 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-08-21 15:45:25,114 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-08-21 15:45:25,115 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-08-21 15:45:25,115 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-08-21 15:45:25,115 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-08-21 15:45:25,116 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-08-21 15:45:25,116 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-08-21 15:45:25,116 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-08-21 15:45:25,116 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-08-21 15:45:25,117 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-08-21 15:45:25,117 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-08-21 15:45:25,117 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-08-21 15:45:25,117 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-08-21 15:45:25,117 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-08-21 15:45:25,118 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-08-21 15:45:25,118 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-08-21 15:45:25,118 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-08-21 15:45:25,118 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-08-21 15:45:25,119 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-08-21 15:45:25,119 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-08-21 15:45:25,119 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-08-21 15:45:25,119 INFO  L138        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true;
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true;
[2020-08-21 15:45:25,408 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-08-21 15:45:25,421 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-08-21 15:45:25,425 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-08-21 15:45:25,426 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-08-21 15:45:25,427 INFO  L275        PluginConnector]: CDTParser initialized
[2020-08-21 15:45:25,427 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-token-2.i
[2020-08-21 15:45:25,502 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1f348564d/fa563099f3f343e3a2c04be0a05c8ee4/FLAGa0447ea35
[2020-08-21 15:45:26,045 INFO  L306              CDTParser]: Found 1 translation units.
[2020-08-21 15:45:26,046 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-token-2.i
[2020-08-21 15:45:26,062 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1f348564d/fa563099f3f343e3a2c04be0a05c8ee4/FLAGa0447ea35
[2020-08-21 15:45:26,352 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1f348564d/fa563099f3f343e3a2c04be0a05c8ee4
[2020-08-21 15:45:26,363 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-08-21 15:45:26,365 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-08-21 15:45:26,366 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-08-21 15:45:26,366 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-08-21 15:45:26,369 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-08-21 15:45:26,370 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:45:26" (1/1) ...
[2020-08-21 15:45:26,373 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@af20ea9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:45:26, skipping insertion in model container
[2020-08-21 15:45:26,373 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 03:45:26" (1/1) ...
[2020-08-21 15:45:26,381 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-08-21 15:45:26,430 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-08-21 15:45:26,954 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-08-21 15:45:26,968 INFO  L203         MainTranslator]: Completed pre-run
[2020-08-21 15:45:27,046 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-08-21 15:45:27,104 INFO  L208         MainTranslator]: Completed translation
[2020-08-21 15:45:27,106 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:45:27 WrapperNode
[2020-08-21 15:45:27,106 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-08-21 15:45:27,107 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-08-21 15:45:27,107 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-08-21 15:45:27,107 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-08-21 15:45:27,117 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:45:27" (1/1) ...
[2020-08-21 15:45:27,118 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:45:27" (1/1) ...
[2020-08-21 15:45:27,133 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:45:27" (1/1) ...
[2020-08-21 15:45:27,134 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:45:27" (1/1) ...
[2020-08-21 15:45:27,151 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:45:27" (1/1) ...
[2020-08-21 15:45:27,159 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:45:27" (1/1) ...
[2020-08-21 15:45:27,165 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:45:27" (1/1) ...
[2020-08-21 15:45:27,171 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-08-21 15:45:27,172 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-08-21 15:45:27,172 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-08-21 15:45:27,172 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-08-21 15:45:27,173 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:45:27" (1/1) ...
No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-08-21 15:45:27,243 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-08-21 15:45:27,243 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-08-21 15:45:27,244 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-08-21 15:45:27,244 INFO  L130     BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max
[2020-08-21 15:45:27,244 INFO  L130     BoogieDeclarations]: Found specification of procedure atof
[2020-08-21 15:45:27,244 INFO  L130     BoogieDeclarations]: Found specification of procedure atoi
[2020-08-21 15:45:27,245 INFO  L130     BoogieDeclarations]: Found specification of procedure atol
[2020-08-21 15:45:27,245 INFO  L130     BoogieDeclarations]: Found specification of procedure atoll
[2020-08-21 15:45:27,245 INFO  L130     BoogieDeclarations]: Found specification of procedure strtod
[2020-08-21 15:45:27,245 INFO  L130     BoogieDeclarations]: Found specification of procedure strtof
[2020-08-21 15:45:27,245 INFO  L130     BoogieDeclarations]: Found specification of procedure strtold
[2020-08-21 15:45:27,245 INFO  L130     BoogieDeclarations]: Found specification of procedure strtol
[2020-08-21 15:45:27,246 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoul
[2020-08-21 15:45:27,246 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoq
[2020-08-21 15:45:27,246 INFO  L130     BoogieDeclarations]: Found specification of procedure strtouq
[2020-08-21 15:45:27,246 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoll
[2020-08-21 15:45:27,247 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoull
[2020-08-21 15:45:27,247 INFO  L130     BoogieDeclarations]: Found specification of procedure l64a
[2020-08-21 15:45:27,247 INFO  L130     BoogieDeclarations]: Found specification of procedure a64l
[2020-08-21 15:45:27,247 INFO  L130     BoogieDeclarations]: Found specification of procedure select
[2020-08-21 15:45:27,247 INFO  L130     BoogieDeclarations]: Found specification of procedure pselect
[2020-08-21 15:45:27,248 INFO  L130     BoogieDeclarations]: Found specification of procedure gnu_dev_major
[2020-08-21 15:45:27,248 INFO  L130     BoogieDeclarations]: Found specification of procedure gnu_dev_minor
[2020-08-21 15:45:27,248 INFO  L130     BoogieDeclarations]: Found specification of procedure gnu_dev_makedev
[2020-08-21 15:45:27,248 INFO  L130     BoogieDeclarations]: Found specification of procedure random
[2020-08-21 15:45:27,248 INFO  L130     BoogieDeclarations]: Found specification of procedure srandom
[2020-08-21 15:45:27,249 INFO  L130     BoogieDeclarations]: Found specification of procedure initstate
[2020-08-21 15:45:27,249 INFO  L130     BoogieDeclarations]: Found specification of procedure setstate
[2020-08-21 15:45:27,249 INFO  L130     BoogieDeclarations]: Found specification of procedure random_r
[2020-08-21 15:45:27,249 INFO  L130     BoogieDeclarations]: Found specification of procedure srandom_r
[2020-08-21 15:45:27,249 INFO  L130     BoogieDeclarations]: Found specification of procedure initstate_r
[2020-08-21 15:45:27,249 INFO  L130     BoogieDeclarations]: Found specification of procedure setstate_r
[2020-08-21 15:45:27,250 INFO  L130     BoogieDeclarations]: Found specification of procedure rand
[2020-08-21 15:45:27,250 INFO  L130     BoogieDeclarations]: Found specification of procedure srand
[2020-08-21 15:45:27,250 INFO  L130     BoogieDeclarations]: Found specification of procedure rand_r
[2020-08-21 15:45:27,250 INFO  L130     BoogieDeclarations]: Found specification of procedure drand48
[2020-08-21 15:45:27,250 INFO  L130     BoogieDeclarations]: Found specification of procedure erand48
[2020-08-21 15:45:27,250 INFO  L130     BoogieDeclarations]: Found specification of procedure lrand48
[2020-08-21 15:45:27,251 INFO  L130     BoogieDeclarations]: Found specification of procedure nrand48
[2020-08-21 15:45:27,251 INFO  L130     BoogieDeclarations]: Found specification of procedure mrand48
[2020-08-21 15:45:27,251 INFO  L130     BoogieDeclarations]: Found specification of procedure jrand48
[2020-08-21 15:45:27,251 INFO  L130     BoogieDeclarations]: Found specification of procedure srand48
[2020-08-21 15:45:27,251 INFO  L130     BoogieDeclarations]: Found specification of procedure seed48
[2020-08-21 15:45:27,252 INFO  L130     BoogieDeclarations]: Found specification of procedure lcong48
[2020-08-21 15:45:27,252 INFO  L130     BoogieDeclarations]: Found specification of procedure drand48_r
[2020-08-21 15:45:27,252 INFO  L130     BoogieDeclarations]: Found specification of procedure erand48_r
[2020-08-21 15:45:27,252 INFO  L130     BoogieDeclarations]: Found specification of procedure lrand48_r
[2020-08-21 15:45:27,252 INFO  L130     BoogieDeclarations]: Found specification of procedure nrand48_r
[2020-08-21 15:45:27,252 INFO  L130     BoogieDeclarations]: Found specification of procedure mrand48_r
[2020-08-21 15:45:27,253 INFO  L130     BoogieDeclarations]: Found specification of procedure jrand48_r
[2020-08-21 15:45:27,253 INFO  L130     BoogieDeclarations]: Found specification of procedure srand48_r
[2020-08-21 15:45:27,253 INFO  L130     BoogieDeclarations]: Found specification of procedure seed48_r
[2020-08-21 15:45:27,253 INFO  L130     BoogieDeclarations]: Found specification of procedure lcong48_r
[2020-08-21 15:45:27,253 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-08-21 15:45:27,253 INFO  L130     BoogieDeclarations]: Found specification of procedure calloc
[2020-08-21 15:45:27,254 INFO  L130     BoogieDeclarations]: Found specification of procedure realloc
[2020-08-21 15:45:27,254 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2020-08-21 15:45:27,254 INFO  L130     BoogieDeclarations]: Found specification of procedure cfree
[2020-08-21 15:45:27,254 INFO  L130     BoogieDeclarations]: Found specification of procedure alloca
[2020-08-21 15:45:27,254 INFO  L130     BoogieDeclarations]: Found specification of procedure valloc
[2020-08-21 15:45:27,254 INFO  L130     BoogieDeclarations]: Found specification of procedure posix_memalign
[2020-08-21 15:45:27,254 INFO  L130     BoogieDeclarations]: Found specification of procedure aligned_alloc
[2020-08-21 15:45:27,255 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-08-21 15:45:27,255 INFO  L130     BoogieDeclarations]: Found specification of procedure atexit
[2020-08-21 15:45:27,255 INFO  L130     BoogieDeclarations]: Found specification of procedure at_quick_exit
[2020-08-21 15:45:27,255 INFO  L130     BoogieDeclarations]: Found specification of procedure on_exit
[2020-08-21 15:45:27,255 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-08-21 15:45:27,255 INFO  L130     BoogieDeclarations]: Found specification of procedure quick_exit
[2020-08-21 15:45:27,256 INFO  L130     BoogieDeclarations]: Found specification of procedure _Exit
[2020-08-21 15:45:27,256 INFO  L130     BoogieDeclarations]: Found specification of procedure getenv
[2020-08-21 15:45:27,256 INFO  L130     BoogieDeclarations]: Found specification of procedure putenv
[2020-08-21 15:45:27,256 INFO  L130     BoogieDeclarations]: Found specification of procedure setenv
[2020-08-21 15:45:27,256 INFO  L130     BoogieDeclarations]: Found specification of procedure unsetenv
[2020-08-21 15:45:27,256 INFO  L130     BoogieDeclarations]: Found specification of procedure clearenv
[2020-08-21 15:45:27,256 INFO  L130     BoogieDeclarations]: Found specification of procedure mktemp
[2020-08-21 15:45:27,257 INFO  L130     BoogieDeclarations]: Found specification of procedure mkstemp
[2020-08-21 15:45:27,257 INFO  L130     BoogieDeclarations]: Found specification of procedure mkstemps
[2020-08-21 15:45:27,257 INFO  L130     BoogieDeclarations]: Found specification of procedure mkdtemp
[2020-08-21 15:45:27,257 INFO  L130     BoogieDeclarations]: Found specification of procedure system
[2020-08-21 15:45:27,257 INFO  L130     BoogieDeclarations]: Found specification of procedure realpath
[2020-08-21 15:45:27,257 INFO  L130     BoogieDeclarations]: Found specification of procedure bsearch
[2020-08-21 15:45:27,258 INFO  L130     BoogieDeclarations]: Found specification of procedure qsort
[2020-08-21 15:45:27,258 INFO  L130     BoogieDeclarations]: Found specification of procedure abs
[2020-08-21 15:45:27,258 INFO  L130     BoogieDeclarations]: Found specification of procedure labs
[2020-08-21 15:45:27,258 INFO  L130     BoogieDeclarations]: Found specification of procedure llabs
[2020-08-21 15:45:27,258 INFO  L130     BoogieDeclarations]: Found specification of procedure div
[2020-08-21 15:45:27,258 INFO  L130     BoogieDeclarations]: Found specification of procedure ldiv
[2020-08-21 15:45:27,259 INFO  L130     BoogieDeclarations]: Found specification of procedure lldiv
[2020-08-21 15:45:27,259 INFO  L130     BoogieDeclarations]: Found specification of procedure ecvt
[2020-08-21 15:45:27,259 INFO  L130     BoogieDeclarations]: Found specification of procedure fcvt
[2020-08-21 15:45:27,259 INFO  L130     BoogieDeclarations]: Found specification of procedure gcvt
[2020-08-21 15:45:27,259 INFO  L130     BoogieDeclarations]: Found specification of procedure qecvt
[2020-08-21 15:45:27,259 INFO  L130     BoogieDeclarations]: Found specification of procedure qfcvt
[2020-08-21 15:45:27,259 INFO  L130     BoogieDeclarations]: Found specification of procedure qgcvt
[2020-08-21 15:45:27,260 INFO  L130     BoogieDeclarations]: Found specification of procedure ecvt_r
[2020-08-21 15:45:27,260 INFO  L130     BoogieDeclarations]: Found specification of procedure fcvt_r
[2020-08-21 15:45:27,260 INFO  L130     BoogieDeclarations]: Found specification of procedure qecvt_r
[2020-08-21 15:45:27,260 INFO  L130     BoogieDeclarations]: Found specification of procedure qfcvt_r
[2020-08-21 15:45:27,260 INFO  L130     BoogieDeclarations]: Found specification of procedure mblen
[2020-08-21 15:45:27,260 INFO  L130     BoogieDeclarations]: Found specification of procedure mbtowc
[2020-08-21 15:45:27,260 INFO  L130     BoogieDeclarations]: Found specification of procedure wctomb
[2020-08-21 15:45:27,261 INFO  L130     BoogieDeclarations]: Found specification of procedure mbstowcs
[2020-08-21 15:45:27,261 INFO  L130     BoogieDeclarations]: Found specification of procedure wcstombs
[2020-08-21 15:45:27,261 INFO  L130     BoogieDeclarations]: Found specification of procedure rpmatch
[2020-08-21 15:45:27,261 INFO  L130     BoogieDeclarations]: Found specification of procedure getsubopt
[2020-08-21 15:45:27,261 INFO  L130     BoogieDeclarations]: Found specification of procedure getloadavg
[2020-08-21 15:45:27,261 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-08-21 15:45:27,261 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-08-21 15:45:27,262 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-08-21 15:45:27,262 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-08-21 15:45:27,262 INFO  L130     BoogieDeclarations]: Found specification of procedure write~$Pointer$
[2020-08-21 15:45:27,262 INFO  L130     BoogieDeclarations]: Found specification of procedure write~int
[2020-08-21 15:45:27,262 INFO  L130     BoogieDeclarations]: Found specification of procedure read~$Pointer$
[2020-08-21 15:45:27,262 INFO  L130     BoogieDeclarations]: Found specification of procedure read~int
[2020-08-21 15:45:27,262 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-08-21 15:45:27,263 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-08-21 15:45:27,263 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-08-21 15:45:27,846 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-08-21 15:45:27,847 INFO  L295             CfgBuilder]: Removed 15 assume(true) statements.
[2020-08-21 15:45:27,854 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:45:27 BoogieIcfgContainer
[2020-08-21 15:45:27,854 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-08-21 15:45:27,856 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-08-21 15:45:27,857 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-08-21 15:45:27,860 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-08-21 15:45:27,860 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 03:45:26" (1/3) ...
[2020-08-21 15:45:27,861 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62186d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:45:27, skipping insertion in model container
[2020-08-21 15:45:27,862 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 03:45:27" (2/3) ...
[2020-08-21 15:45:27,863 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62186d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 03:45:27, skipping insertion in model container
[2020-08-21 15:45:27,863 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 03:45:27" (3/3) ...
[2020-08-21 15:45:27,865 INFO  L109   eAbstractionObserver]: Analyzing ICFG dll-token-2.i
[2020-08-21 15:45:27,877 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-08-21 15:45:27,888 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations.
[2020-08-21 15:45:27,904 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 6 error locations.
[2020-08-21 15:45:27,934 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-08-21 15:45:27,935 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-08-21 15:45:27,935 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-08-21 15:45:27,935 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-08-21 15:45:27,935 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-08-21 15:45:27,935 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-08-21 15:45:27,935 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-08-21 15:45:27,935 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-08-21 15:45:27,964 INFO  L276                IsEmpty]: Start isEmpty. Operand 49 states.
[2020-08-21 15:45:27,971 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2020-08-21 15:45:27,979 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 15:45:27,980 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-21 15:45:27,981 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 15:45:27,987 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 15:45:27,987 INFO  L82        PathProgramCache]: Analyzing trace with hash 68430596, now seen corresponding path program 1 times
[2020-08-21 15:45:27,998 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 15:45:27,998 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66963472]
[2020-08-21 15:45:27,999 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 15:45:28,116 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:45:28,190 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 15:45:28,193 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:45:28,204 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-21 15:45:28,205 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66963472]
[2020-08-21 15:45:28,207 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-21 15:45:28,207 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-08-21 15:45:28,208 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713516913]
[2020-08-21 15:45:28,214 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-08-21 15:45:28,214 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-21 15:45:28,229 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-08-21 15:45:28,230 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-08-21 15:45:28,232 INFO  L87              Difference]: Start difference. First operand 49 states. Second operand 3 states.
[2020-08-21 15:45:28,398 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-21 15:45:28,399 INFO  L93              Difference]: Finished difference Result 92 states and 138 transitions.
[2020-08-21 15:45:28,399 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-08-21 15:45:28,401 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 10
[2020-08-21 15:45:28,401 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-21 15:45:28,411 INFO  L225             Difference]: With dead ends: 92
[2020-08-21 15:45:28,412 INFO  L226             Difference]: Without dead ends: 43
[2020-08-21 15:45:28,416 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-08-21 15:45:28,435 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 43 states.
[2020-08-21 15:45:28,452 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43.
[2020-08-21 15:45:28,453 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 43 states.
[2020-08-21 15:45:28,455 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 45 transitions.
[2020-08-21 15:45:28,457 INFO  L78                 Accepts]: Start accepts. Automaton has 43 states and 45 transitions. Word has length 10
[2020-08-21 15:45:28,457 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-21 15:45:28,457 INFO  L479      AbstractCegarLoop]: Abstraction has 43 states and 45 transitions.
[2020-08-21 15:45:28,458 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-08-21 15:45:28,458 INFO  L276                IsEmpty]: Start isEmpty. Operand 43 states and 45 transitions.
[2020-08-21 15:45:28,458 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2020-08-21 15:45:28,458 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 15:45:28,458 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-21 15:45:28,459 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-08-21 15:45:28,459 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 15:45:28,459 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 15:45:28,460 INFO  L82        PathProgramCache]: Analyzing trace with hash 67663975, now seen corresponding path program 1 times
[2020-08-21 15:45:28,460 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 15:45:28,460 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1975503741]
[2020-08-21 15:45:28,460 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 15:45:28,511 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:45:28,603 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 15:45:28,605 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:45:28,615 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-21 15:45:28,616 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1975503741]
[2020-08-21 15:45:28,616 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-21 15:45:28,616 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-08-21 15:45:28,616 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873476149]
[2020-08-21 15:45:28,620 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-08-21 15:45:28,621 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-21 15:45:28,621 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-08-21 15:45:28,621 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-08-21 15:45:28,621 INFO  L87              Difference]: Start difference. First operand 43 states and 45 transitions. Second operand 5 states.
[2020-08-21 15:45:28,806 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-21 15:45:28,806 INFO  L93              Difference]: Finished difference Result 43 states and 45 transitions.
[2020-08-21 15:45:28,806 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2020-08-21 15:45:28,806 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 10
[2020-08-21 15:45:28,807 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-21 15:45:28,808 INFO  L225             Difference]: With dead ends: 43
[2020-08-21 15:45:28,808 INFO  L226             Difference]: Without dead ends: 41
[2020-08-21 15:45:28,809 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-08-21 15:45:28,811 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 41 states.
[2020-08-21 15:45:28,820 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41.
[2020-08-21 15:45:28,820 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 41 states.
[2020-08-21 15:45:28,825 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions.
[2020-08-21 15:45:28,826 INFO  L78                 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 10
[2020-08-21 15:45:28,826 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-21 15:45:28,826 INFO  L479      AbstractCegarLoop]: Abstraction has 41 states and 43 transitions.
[2020-08-21 15:45:28,826 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-08-21 15:45:28,826 INFO  L276                IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions.
[2020-08-21 15:45:28,827 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2020-08-21 15:45:28,827 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 15:45:28,827 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-21 15:45:28,828 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-08-21 15:45:28,828 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 15:45:28,828 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 15:45:28,829 INFO  L82        PathProgramCache]: Analyzing trace with hash 2097539711, now seen corresponding path program 1 times
[2020-08-21 15:45:28,829 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 15:45:28,829 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1194804149]
[2020-08-21 15:45:28,830 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 15:45:28,878 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:45:28,927 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 15:45:28,929 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:45:28,934 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-21 15:45:28,934 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1194804149]
[2020-08-21 15:45:28,935 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-21 15:45:28,935 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2020-08-21 15:45:28,935 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427594864]
[2020-08-21 15:45:28,935 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-08-21 15:45:28,936 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-21 15:45:28,936 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-08-21 15:45:28,936 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2020-08-21 15:45:28,936 INFO  L87              Difference]: Start difference. First operand 41 states and 43 transitions. Second operand 5 states.
[2020-08-21 15:45:29,085 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-21 15:45:29,087 INFO  L93              Difference]: Finished difference Result 67 states and 70 transitions.
[2020-08-21 15:45:29,087 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2020-08-21 15:45:29,088 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 11
[2020-08-21 15:45:29,088 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-21 15:45:29,089 INFO  L225             Difference]: With dead ends: 67
[2020-08-21 15:45:29,089 INFO  L226             Difference]: Without dead ends: 65
[2020-08-21 15:45:29,091 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30
[2020-08-21 15:45:29,092 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 65 states.
[2020-08-21 15:45:29,100 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 39.
[2020-08-21 15:45:29,103 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 39 states.
[2020-08-21 15:45:29,105 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions.
[2020-08-21 15:45:29,105 INFO  L78                 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 11
[2020-08-21 15:45:29,105 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-21 15:45:29,105 INFO  L479      AbstractCegarLoop]: Abstraction has 39 states and 41 transitions.
[2020-08-21 15:45:29,105 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-08-21 15:45:29,106 INFO  L276                IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions.
[2020-08-21 15:45:29,106 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2020-08-21 15:45:29,106 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 15:45:29,106 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-21 15:45:29,108 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-08-21 15:45:29,109 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 15:45:29,109 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 15:45:29,109 INFO  L82        PathProgramCache]: Analyzing trace with hash -409997773, now seen corresponding path program 1 times
[2020-08-21 15:45:29,109 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 15:45:29,110 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1699207300]
[2020-08-21 15:45:29,111 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 15:45:29,151 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:45:29,228 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 15:45:29,229 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:45:29,233 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-21 15:45:29,234 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1699207300]
[2020-08-21 15:45:29,234 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-21 15:45:29,234 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-08-21 15:45:29,235 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489923653]
[2020-08-21 15:45:29,235 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-08-21 15:45:29,235 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-21 15:45:29,235 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-08-21 15:45:29,236 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2020-08-21 15:45:29,236 INFO  L87              Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 6 states.
[2020-08-21 15:45:29,389 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-21 15:45:29,389 INFO  L93              Difference]: Finished difference Result 39 states and 41 transitions.
[2020-08-21 15:45:29,389 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2020-08-21 15:45:29,390 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 16
[2020-08-21 15:45:29,390 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-21 15:45:29,391 INFO  L225             Difference]: With dead ends: 39
[2020-08-21 15:45:29,391 INFO  L226             Difference]: Without dead ends: 37
[2020-08-21 15:45:29,391 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2020-08-21 15:45:29,392 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 37 states.
[2020-08-21 15:45:29,397 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37.
[2020-08-21 15:45:29,397 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 37 states.
[2020-08-21 15:45:29,398 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions.
[2020-08-21 15:45:29,398 INFO  L78                 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 16
[2020-08-21 15:45:29,398 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-21 15:45:29,398 INFO  L479      AbstractCegarLoop]: Abstraction has 37 states and 39 transitions.
[2020-08-21 15:45:29,398 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-08-21 15:45:29,399 INFO  L276                IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions.
[2020-08-21 15:45:29,399 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2020-08-21 15:45:29,399 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 15:45:29,400 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-08-21 15:45:29,400 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-08-21 15:45:29,400 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 15:45:29,400 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 15:45:29,401 INFO  L82        PathProgramCache]: Analyzing trace with hash -409960037, now seen corresponding path program 1 times
[2020-08-21 15:45:29,401 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 15:45:29,401 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [965494005]
[2020-08-21 15:45:29,401 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 15:45:29,428 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:45:29,545 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-08-21 15:45:29,546 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-08-21 15:45:29,550 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-08-21 15:45:29,550 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [965494005]
[2020-08-21 15:45:29,550 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-08-21 15:45:29,551 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-08-21 15:45:29,551 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816216140]
[2020-08-21 15:45:29,551 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2020-08-21 15:45:29,552 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-08-21 15:45:29,552 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2020-08-21 15:45:29,552 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2020-08-21 15:45:29,552 INFO  L87              Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 6 states.
[2020-08-21 15:45:29,745 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-08-21 15:45:29,746 INFO  L93              Difference]: Finished difference Result 72 states and 77 transitions.
[2020-08-21 15:45:29,746 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2020-08-21 15:45:29,747 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 16
[2020-08-21 15:45:29,747 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-08-21 15:45:29,750 INFO  L225             Difference]: With dead ends: 72
[2020-08-21 15:45:29,750 INFO  L226             Difference]: Without dead ends: 48
[2020-08-21 15:45:29,751 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2020-08-21 15:45:29,752 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 48 states.
[2020-08-21 15:45:29,766 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44.
[2020-08-21 15:45:29,766 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 44 states.
[2020-08-21 15:45:29,768 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions.
[2020-08-21 15:45:29,768 INFO  L78                 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 16
[2020-08-21 15:45:29,769 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-08-21 15:45:29,769 INFO  L479      AbstractCegarLoop]: Abstraction has 44 states and 47 transitions.
[2020-08-21 15:45:29,769 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2020-08-21 15:45:29,769 INFO  L276                IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions.
[2020-08-21 15:45:29,774 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2020-08-21 15:45:29,774 INFO  L414         BasicCegarLoop]: Found error trace
[2020-08-21 15:45:29,775 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]
[2020-08-21 15:45:29,775 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-08-21 15:45:29,776 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-08-21 15:45:29,776 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-08-21 15:45:29,776 INFO  L82        PathProgramCache]: Analyzing trace with hash -1407314597, now seen corresponding path program 1 times
[2020-08-21 15:45:29,776 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-08-21 15:45:29,777 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1031124249]
[2020-08-21 15:45:29,777 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-08-21 15:45:29,816 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-08-21 15:45:29,819 INFO  L174   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-08-21 15:45:29,820 INFO  L520         BasicCegarLoop]: Counterexample might be feasible
[2020-08-21 15:45:29,824 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2020-08-21 15:45:29,845 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 03:45:29 BoogieIcfgContainer
[2020-08-21 15:45:29,845 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-08-21 15:45:29,849 INFO  L168              Benchmark]: Toolchain (without parser) took 3483.00 ms. Allocated memory was 141.0 MB in the beginning and 234.4 MB in the end (delta: 93.3 MB). Free memory was 103.4 MB in the beginning and 87.5 MB in the end (delta: 15.8 MB). Peak memory consumption was 109.1 MB. Max. memory is 7.1 GB.
[2020-08-21 15:45:29,852 INFO  L168              Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB.
[2020-08-21 15:45:29,854 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 740.67 ms. Allocated memory was 141.0 MB in the beginning and 207.6 MB in the end (delta: 66.6 MB). Free memory was 103.1 MB in the beginning and 174.3 MB in the end (delta: -71.1 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB.
[2020-08-21 15:45:29,860 INFO  L168              Benchmark]: Boogie Preprocessor took 64.46 ms. Allocated memory is still 207.6 MB. Free memory was 174.3 MB in the beginning and 171.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB.
[2020-08-21 15:45:29,861 INFO  L168              Benchmark]: RCFGBuilder took 682.81 ms. Allocated memory is still 207.6 MB. Free memory was 171.6 MB in the beginning and 123.9 MB in the end (delta: 47.7 MB). Peak memory consumption was 47.7 MB. Max. memory is 7.1 GB.
[2020-08-21 15:45:29,862 INFO  L168              Benchmark]: TraceAbstraction took 1988.99 ms. Allocated memory was 207.6 MB in the beginning and 234.4 MB in the end (delta: 26.7 MB). Free memory was 123.3 MB in the beginning and 87.5 MB in the end (delta: 35.7 MB). Peak memory consumption was 62.5 MB. Max. memory is 7.1 GB.
[2020-08-21 15:45:29,877 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.24 ms. Allocated memory is still 141.0 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 740.67 ms. Allocated memory was 141.0 MB in the beginning and 207.6 MB in the end (delta: 66.6 MB). Free memory was 103.1 MB in the beginning and 174.3 MB in the end (delta: -71.1 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 64.46 ms. Allocated memory is still 207.6 MB. Free memory was 174.3 MB in the beginning and 171.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 682.81 ms. Allocated memory is still 207.6 MB. Free memory was 171.6 MB in the beginning and 123.9 MB in the end (delta: 47.7 MB). Peak memory consumption was 47.7 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 1988.99 ms. Allocated memory was 207.6 MB in the beginning and 234.4 MB in the end (delta: 26.7 MB). Free memory was 123.3 MB in the beginning and 87.5 MB in the end (delta: 35.7 MB). Peak memory consumption was 62.5 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - CounterExampleResult [Line: 1026]: a call of __VERIFIER_error() is reachable
    a call of __VERIFIER_error() is reachable
We found a FailurePath: 
[L993]               SLL* head = malloc(sizeof(SLL));
[L994]               head->next = ((void*)0)
[L995]               head->prev = ((void*)0)
[L996]               head->data = 0
[L998]               SLL* x = head;
[L1001]  COND FALSE  !(__VERIFIER_nondet_int())
[L1010]              x->data = 1
[L1011]              x->next = malloc(sizeof(SLL))
[L1012]  EXPR        x->next
[L1012]              x->next->prev = x
[L1013]  EXPR        x->next
[L1013]              x->next->data = 2
[L1015]              x = head
[L1017]  COND FALSE  !(!(((void*)0) != x))
[L1019]  EXPR        x->data
[L1019]  COND FALSE  !(1 != x->data)
[L1024]  EXPR        x->data
[L1024]  COND FALSE  !(!(1 == x->data))
[L1025]  EXPR        x->next
[L1025]              x = x->next
[L1026]  EXPR        x->data
[L1026]  COND TRUE   !(2 != x->data)
[L1026]              __VERIFIER_error()

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 3 procedures, 49 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.8s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 175 SDtfs, 91 SDslu, 234 SDs, 0 SdLazy, 350 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred 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: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 30 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 83 NumberOfCodeBlocks, 83 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 58 ConstructedInterpolants, 0 QuantifiedInterpolants, 2923 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 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...