/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/fo_test.i


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


This is Ultimate 0.1.25-d623d84
[2020-07-20 11:28:52,145 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-07-20 11:28:52,148 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-07-20 11:28:52,161 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-07-20 11:28:52,162 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-07-20 11:28:52,163 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-07-20 11:28:52,164 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-07-20 11:28:52,166 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-07-20 11:28:52,168 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-07-20 11:28:52,168 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-07-20 11:28:52,169 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-07-20 11:28:52,171 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-07-20 11:28:52,171 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-07-20 11:28:52,172 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-07-20 11:28:52,173 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-07-20 11:28:52,174 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-07-20 11:28:52,175 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-07-20 11:28:52,176 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-07-20 11:28:52,178 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-07-20 11:28:52,180 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-07-20 11:28:52,182 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-07-20 11:28:52,183 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-07-20 11:28:52,184 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-07-20 11:28:52,185 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-07-20 11:28:52,188 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-07-20 11:28:52,188 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-07-20 11:28:52,189 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-07-20 11:28:52,189 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-07-20 11:28:52,190 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-07-20 11:28:52,191 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-07-20 11:28:52,191 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-07-20 11:28:52,192 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-07-20 11:28:52,193 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-07-20 11:28:52,194 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-07-20 11:28:52,195 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-07-20 11:28:52,195 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-07-20 11:28:52,196 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-07-20 11:28:52,196 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-07-20 11:28:52,196 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-07-20 11:28:52,197 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-07-20 11:28:52,198 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-07-20 11:28:52,199 INFO  L101        SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf
[2020-07-20 11:28:52,225 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-07-20 11:28:52,225 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-07-20 11:28:52,227 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-07-20 11:28:52,227 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-07-20 11:28:52,228 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-07-20 11:28:52,228 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-07-20 11:28:52,228 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-07-20 11:28:52,228 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-07-20 11:28:52,228 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-07-20 11:28:52,229 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-07-20 11:28:52,230 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-07-20 11:28:52,230 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-07-20 11:28:52,230 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-07-20 11:28:52,231 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-07-20 11:28:52,231 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-07-20 11:28:52,231 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-07-20 11:28:52,231 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-07-20 11:28:52,231 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-07-20 11:28:52,232 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-07-20 11:28:52,232 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-07-20 11:28:52,232 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-07-20 11:28:52,232 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-07-20 11:28:52,233 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-07-20 11:28:52,233 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-07-20 11:28:52,233 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-07-20 11:28:52,234 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-07-20 11:28:52,234 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 11:28:52,234 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-07-20 11:28:52,234 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-07-20 11:28:52,234 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 -> FPandBPonlyIfFpWasNotPerfect
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY
[2020-07-20 11:28:52,522 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2020-07-20 11:28:52,537 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-07-20 11:28:52,541 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-07-20 11:28:52,542 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-07-20 11:28:52,543 INFO  L275        PluginConnector]: CDTParser initialized
[2020-07-20 11:28:52,544 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/fo_test.i
[2020-07-20 11:28:52,623 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89636e44c/0f3d040491e545aa8849bfcfc538f2e3/FLAG503235f64
[2020-07-20 11:28:53,210 INFO  L306              CDTParser]: Found 1 translation units.
[2020-07-20 11:28:53,211 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/fo_test.i
[2020-07-20 11:28:53,229 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89636e44c/0f3d040491e545aa8849bfcfc538f2e3/FLAG503235f64
[2020-07-20 11:28:53,496 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89636e44c/0f3d040491e545aa8849bfcfc538f2e3
[2020-07-20 11:28:53,508 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-07-20 11:28:53,512 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-07-20 11:28:53,513 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-07-20 11:28:53,513 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-07-20 11:28:53,518 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-07-20 11:28:53,519 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:28:53" (1/1) ...
[2020-07-20 11:28:53,522 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a4a0d27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:28:53, skipping insertion in model container
[2020-07-20 11:28:53,522 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:28:53" (1/1) ...
[2020-07-20 11:28:53,531 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-07-20 11:28:53,583 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-07-20 11:28:53,959 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-07-20 11:28:54,076 INFO  L203         MainTranslator]: Completed pre-run
[2020-07-20 11:28:54,163 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-07-20 11:28:54,224 INFO  L208         MainTranslator]: Completed translation
[2020-07-20 11:28:54,225 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:28:54 WrapperNode
[2020-07-20 11:28:54,225 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-07-20 11:28:54,226 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-07-20 11:28:54,227 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-07-20 11:28:54,227 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-07-20 11:28:54,241 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:28:54" (1/1) ...
[2020-07-20 11:28:54,241 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:28:54" (1/1) ...
[2020-07-20 11:28:54,259 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:28:54" (1/1) ...
[2020-07-20 11:28:54,260 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:28:54" (1/1) ...
[2020-07-20 11:28:54,273 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:28:54" (1/1) ...
[2020-07-20 11:28:54,275 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:28:54" (1/1) ...
[2020-07-20 11:28:54,279 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:28:54" (1/1) ...
[2020-07-20 11:28:54,285 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-07-20 11:28:54,286 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-07-20 11:28:54,286 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-07-20 11:28:54,286 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-07-20 11:28:54,287 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:28:54" (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
[2020-07-20 11:28:54,355 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-07-20 11:28:54,355 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-07-20 11:28:54,355 INFO  L138     BoogieDeclarations]: Found implementation of procedure __blast_assert
[2020-07-20 11:28:54,355 INFO  L138     BoogieDeclarations]: Found implementation of procedure open
[2020-07-20 11:28:54,355 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-07-20 11:28:54,355 INFO  L138     BoogieDeclarations]: Found implementation of procedure l_read
[2020-07-20 11:28:54,356 INFO  L138     BoogieDeclarations]: Found implementation of procedure l_open
[2020-07-20 11:28:54,356 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-07-20 11:28:54,356 INFO  L130     BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max
[2020-07-20 11:28:54,356 INFO  L130     BoogieDeclarations]: Found specification of procedure atof
[2020-07-20 11:28:54,356 INFO  L130     BoogieDeclarations]: Found specification of procedure atoi
[2020-07-20 11:28:54,356 INFO  L130     BoogieDeclarations]: Found specification of procedure atol
[2020-07-20 11:28:54,357 INFO  L130     BoogieDeclarations]: Found specification of procedure atoll
[2020-07-20 11:28:54,357 INFO  L130     BoogieDeclarations]: Found specification of procedure strtod
[2020-07-20 11:28:54,357 INFO  L130     BoogieDeclarations]: Found specification of procedure strtof
[2020-07-20 11:28:54,363 INFO  L130     BoogieDeclarations]: Found specification of procedure strtold
[2020-07-20 11:28:54,363 INFO  L130     BoogieDeclarations]: Found specification of procedure strtol
[2020-07-20 11:28:54,363 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoul
[2020-07-20 11:28:54,363 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoq
[2020-07-20 11:28:54,363 INFO  L130     BoogieDeclarations]: Found specification of procedure strtouq
[2020-07-20 11:28:54,364 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoll
[2020-07-20 11:28:54,364 INFO  L130     BoogieDeclarations]: Found specification of procedure strtoull
[2020-07-20 11:28:54,364 INFO  L130     BoogieDeclarations]: Found specification of procedure l64a
[2020-07-20 11:28:54,364 INFO  L130     BoogieDeclarations]: Found specification of procedure a64l
[2020-07-20 11:28:54,364 INFO  L130     BoogieDeclarations]: Found specification of procedure select
[2020-07-20 11:28:54,365 INFO  L130     BoogieDeclarations]: Found specification of procedure pselect
[2020-07-20 11:28:54,365 INFO  L130     BoogieDeclarations]: Found specification of procedure gnu_dev_major
[2020-07-20 11:28:54,366 INFO  L130     BoogieDeclarations]: Found specification of procedure gnu_dev_minor
[2020-07-20 11:28:54,366 INFO  L130     BoogieDeclarations]: Found specification of procedure gnu_dev_makedev
[2020-07-20 11:28:54,366 INFO  L130     BoogieDeclarations]: Found specification of procedure random
[2020-07-20 11:28:54,366 INFO  L130     BoogieDeclarations]: Found specification of procedure srandom
[2020-07-20 11:28:54,366 INFO  L130     BoogieDeclarations]: Found specification of procedure initstate
[2020-07-20 11:28:54,366 INFO  L130     BoogieDeclarations]: Found specification of procedure setstate
[2020-07-20 11:28:54,366 INFO  L130     BoogieDeclarations]: Found specification of procedure random_r
[2020-07-20 11:28:54,366 INFO  L130     BoogieDeclarations]: Found specification of procedure srandom_r
[2020-07-20 11:28:54,367 INFO  L130     BoogieDeclarations]: Found specification of procedure initstate_r
[2020-07-20 11:28:54,367 INFO  L130     BoogieDeclarations]: Found specification of procedure setstate_r
[2020-07-20 11:28:54,367 INFO  L130     BoogieDeclarations]: Found specification of procedure rand
[2020-07-20 11:28:54,367 INFO  L130     BoogieDeclarations]: Found specification of procedure srand
[2020-07-20 11:28:54,367 INFO  L130     BoogieDeclarations]: Found specification of procedure rand_r
[2020-07-20 11:28:54,367 INFO  L130     BoogieDeclarations]: Found specification of procedure drand48
[2020-07-20 11:28:54,367 INFO  L130     BoogieDeclarations]: Found specification of procedure erand48
[2020-07-20 11:28:54,368 INFO  L130     BoogieDeclarations]: Found specification of procedure lrand48
[2020-07-20 11:28:54,368 INFO  L130     BoogieDeclarations]: Found specification of procedure nrand48
[2020-07-20 11:28:54,368 INFO  L130     BoogieDeclarations]: Found specification of procedure mrand48
[2020-07-20 11:28:54,368 INFO  L130     BoogieDeclarations]: Found specification of procedure jrand48
[2020-07-20 11:28:54,368 INFO  L130     BoogieDeclarations]: Found specification of procedure srand48
[2020-07-20 11:28:54,368 INFO  L130     BoogieDeclarations]: Found specification of procedure seed48
[2020-07-20 11:28:54,368 INFO  L130     BoogieDeclarations]: Found specification of procedure lcong48
[2020-07-20 11:28:54,368 INFO  L130     BoogieDeclarations]: Found specification of procedure drand48_r
[2020-07-20 11:28:54,368 INFO  L130     BoogieDeclarations]: Found specification of procedure erand48_r
[2020-07-20 11:28:54,369 INFO  L130     BoogieDeclarations]: Found specification of procedure lrand48_r
[2020-07-20 11:28:54,369 INFO  L130     BoogieDeclarations]: Found specification of procedure nrand48_r
[2020-07-20 11:28:54,369 INFO  L130     BoogieDeclarations]: Found specification of procedure mrand48_r
[2020-07-20 11:28:54,369 INFO  L130     BoogieDeclarations]: Found specification of procedure jrand48_r
[2020-07-20 11:28:54,369 INFO  L130     BoogieDeclarations]: Found specification of procedure srand48_r
[2020-07-20 11:28:54,369 INFO  L130     BoogieDeclarations]: Found specification of procedure seed48_r
[2020-07-20 11:28:54,370 INFO  L130     BoogieDeclarations]: Found specification of procedure lcong48_r
[2020-07-20 11:28:54,370 INFO  L130     BoogieDeclarations]: Found specification of procedure malloc
[2020-07-20 11:28:54,370 INFO  L130     BoogieDeclarations]: Found specification of procedure calloc
[2020-07-20 11:28:54,370 INFO  L130     BoogieDeclarations]: Found specification of procedure realloc
[2020-07-20 11:28:54,370 INFO  L130     BoogieDeclarations]: Found specification of procedure free
[2020-07-20 11:28:54,370 INFO  L130     BoogieDeclarations]: Found specification of procedure cfree
[2020-07-20 11:28:54,371 INFO  L130     BoogieDeclarations]: Found specification of procedure alloca
[2020-07-20 11:28:54,371 INFO  L130     BoogieDeclarations]: Found specification of procedure valloc
[2020-07-20 11:28:54,371 INFO  L130     BoogieDeclarations]: Found specification of procedure posix_memalign
[2020-07-20 11:28:54,371 INFO  L130     BoogieDeclarations]: Found specification of procedure abort
[2020-07-20 11:28:54,371 INFO  L130     BoogieDeclarations]: Found specification of procedure atexit
[2020-07-20 11:28:54,371 INFO  L130     BoogieDeclarations]: Found specification of procedure on_exit
[2020-07-20 11:28:54,371 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-07-20 11:28:54,372 INFO  L130     BoogieDeclarations]: Found specification of procedure _Exit
[2020-07-20 11:28:54,372 INFO  L130     BoogieDeclarations]: Found specification of procedure getenv
[2020-07-20 11:28:54,372 INFO  L130     BoogieDeclarations]: Found specification of procedure __secure_getenv
[2020-07-20 11:28:54,372 INFO  L130     BoogieDeclarations]: Found specification of procedure putenv
[2020-07-20 11:28:54,372 INFO  L130     BoogieDeclarations]: Found specification of procedure setenv
[2020-07-20 11:28:54,372 INFO  L130     BoogieDeclarations]: Found specification of procedure unsetenv
[2020-07-20 11:28:54,373 INFO  L130     BoogieDeclarations]: Found specification of procedure clearenv
[2020-07-20 11:28:54,373 INFO  L130     BoogieDeclarations]: Found specification of procedure mktemp
[2020-07-20 11:28:54,373 INFO  L130     BoogieDeclarations]: Found specification of procedure mkstemp
[2020-07-20 11:28:54,373 INFO  L130     BoogieDeclarations]: Found specification of procedure mkstemps
[2020-07-20 11:28:54,373 INFO  L130     BoogieDeclarations]: Found specification of procedure mkdtemp
[2020-07-20 11:28:54,373 INFO  L130     BoogieDeclarations]: Found specification of procedure system
[2020-07-20 11:28:54,374 INFO  L130     BoogieDeclarations]: Found specification of procedure realpath
[2020-07-20 11:28:54,374 INFO  L130     BoogieDeclarations]: Found specification of procedure bsearch
[2020-07-20 11:28:54,374 INFO  L130     BoogieDeclarations]: Found specification of procedure qsort
[2020-07-20 11:28:54,374 INFO  L130     BoogieDeclarations]: Found specification of procedure abs
[2020-07-20 11:28:54,374 INFO  L130     BoogieDeclarations]: Found specification of procedure labs
[2020-07-20 11:28:54,374 INFO  L130     BoogieDeclarations]: Found specification of procedure llabs
[2020-07-20 11:28:54,375 INFO  L130     BoogieDeclarations]: Found specification of procedure div
[2020-07-20 11:28:54,375 INFO  L130     BoogieDeclarations]: Found specification of procedure ldiv
[2020-07-20 11:28:54,375 INFO  L130     BoogieDeclarations]: Found specification of procedure lldiv
[2020-07-20 11:28:54,375 INFO  L130     BoogieDeclarations]: Found specification of procedure ecvt
[2020-07-20 11:28:54,375 INFO  L130     BoogieDeclarations]: Found specification of procedure fcvt
[2020-07-20 11:28:54,375 INFO  L130     BoogieDeclarations]: Found specification of procedure gcvt
[2020-07-20 11:28:54,375 INFO  L130     BoogieDeclarations]: Found specification of procedure qecvt
[2020-07-20 11:28:54,376 INFO  L130     BoogieDeclarations]: Found specification of procedure qfcvt
[2020-07-20 11:28:54,376 INFO  L130     BoogieDeclarations]: Found specification of procedure qgcvt
[2020-07-20 11:28:54,376 INFO  L130     BoogieDeclarations]: Found specification of procedure ecvt_r
[2020-07-20 11:28:54,376 INFO  L130     BoogieDeclarations]: Found specification of procedure fcvt_r
[2020-07-20 11:28:54,376 INFO  L130     BoogieDeclarations]: Found specification of procedure qecvt_r
[2020-07-20 11:28:54,376 INFO  L130     BoogieDeclarations]: Found specification of procedure qfcvt_r
[2020-07-20 11:28:54,376 INFO  L130     BoogieDeclarations]: Found specification of procedure mblen
[2020-07-20 11:28:54,377 INFO  L130     BoogieDeclarations]: Found specification of procedure mbtowc
[2020-07-20 11:28:54,377 INFO  L130     BoogieDeclarations]: Found specification of procedure wctomb
[2020-07-20 11:28:54,377 INFO  L130     BoogieDeclarations]: Found specification of procedure mbstowcs
[2020-07-20 11:28:54,377 INFO  L130     BoogieDeclarations]: Found specification of procedure wcstombs
[2020-07-20 11:28:54,377 INFO  L130     BoogieDeclarations]: Found specification of procedure rpmatch
[2020-07-20 11:28:54,377 INFO  L130     BoogieDeclarations]: Found specification of procedure posix_openpt
[2020-07-20 11:28:54,378 INFO  L130     BoogieDeclarations]: Found specification of procedure getloadavg
[2020-07-20 11:28:54,378 INFO  L130     BoogieDeclarations]: Found specification of procedure __blast_assert
[2020-07-20 11:28:54,378 INFO  L130     BoogieDeclarations]: Found specification of procedure stat
[2020-07-20 11:28:54,378 INFO  L130     BoogieDeclarations]: Found specification of procedure fstat
[2020-07-20 11:28:54,378 INFO  L130     BoogieDeclarations]: Found specification of procedure fstatat
[2020-07-20 11:28:54,378 INFO  L130     BoogieDeclarations]: Found specification of procedure lstat
[2020-07-20 11:28:54,378 INFO  L130     BoogieDeclarations]: Found specification of procedure chmod
[2020-07-20 11:28:54,379 INFO  L130     BoogieDeclarations]: Found specification of procedure lchmod
[2020-07-20 11:28:54,379 INFO  L130     BoogieDeclarations]: Found specification of procedure fchmod
[2020-07-20 11:28:54,379 INFO  L130     BoogieDeclarations]: Found specification of procedure fchmodat
[2020-07-20 11:28:54,379 INFO  L130     BoogieDeclarations]: Found specification of procedure umask
[2020-07-20 11:28:54,379 INFO  L130     BoogieDeclarations]: Found specification of procedure mkdir
[2020-07-20 11:28:54,379 INFO  L130     BoogieDeclarations]: Found specification of procedure mkdirat
[2020-07-20 11:28:54,380 INFO  L130     BoogieDeclarations]: Found specification of procedure mknod
[2020-07-20 11:28:54,380 INFO  L130     BoogieDeclarations]: Found specification of procedure mknodat
[2020-07-20 11:28:54,380 INFO  L130     BoogieDeclarations]: Found specification of procedure mkfifo
[2020-07-20 11:28:54,380 INFO  L130     BoogieDeclarations]: Found specification of procedure mkfifoat
[2020-07-20 11:28:54,380 INFO  L130     BoogieDeclarations]: Found specification of procedure utimensat
[2020-07-20 11:28:54,380 INFO  L130     BoogieDeclarations]: Found specification of procedure futimens
[2020-07-20 11:28:54,380 INFO  L130     BoogieDeclarations]: Found specification of procedure __fxstat
[2020-07-20 11:28:54,381 INFO  L130     BoogieDeclarations]: Found specification of procedure __xstat
[2020-07-20 11:28:54,381 INFO  L130     BoogieDeclarations]: Found specification of procedure __lxstat
[2020-07-20 11:28:54,381 INFO  L130     BoogieDeclarations]: Found specification of procedure __fxstatat
[2020-07-20 11:28:54,381 INFO  L130     BoogieDeclarations]: Found specification of procedure __xmknod
[2020-07-20 11:28:54,381 INFO  L130     BoogieDeclarations]: Found specification of procedure __xmknodat
[2020-07-20 11:28:54,381 INFO  L130     BoogieDeclarations]: Found specification of procedure fcntl
[2020-07-20 11:28:54,382 INFO  L130     BoogieDeclarations]: Found specification of procedure open
[2020-07-20 11:28:54,382 INFO  L130     BoogieDeclarations]: Found specification of procedure openat
[2020-07-20 11:28:54,382 INFO  L130     BoogieDeclarations]: Found specification of procedure openat64
[2020-07-20 11:28:54,382 INFO  L130     BoogieDeclarations]: Found specification of procedure creat
[2020-07-20 11:28:54,382 INFO  L130     BoogieDeclarations]: Found specification of procedure lockf
[2020-07-20 11:28:54,382 INFO  L130     BoogieDeclarations]: Found specification of procedure posix_fadvise
[2020-07-20 11:28:54,383 INFO  L130     BoogieDeclarations]: Found specification of procedure posix_fallocate
[2020-07-20 11:28:54,383 INFO  L130     BoogieDeclarations]: Found specification of procedure read
[2020-07-20 11:28:54,383 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-07-20 11:28:54,383 INFO  L130     BoogieDeclarations]: Found specification of procedure l_read
[2020-07-20 11:28:54,383 INFO  L130     BoogieDeclarations]: Found specification of procedure l_open
[2020-07-20 11:28:54,383 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-07-20 11:28:54,384 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2020-07-20 11:28:54,384 INFO  L130     BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap
[2020-07-20 11:28:54,384 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-07-20 11:28:54,384 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-07-20 11:28:54,384 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2020-07-20 11:28:54,887 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-07-20 11:28:54,887 INFO  L295             CfgBuilder]: Removed 0 assume(true) statements.
[2020-07-20 11:28:54,890 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:28:54 BoogieIcfgContainer
[2020-07-20 11:28:54,891 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-07-20 11:28:54,892 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-07-20 11:28:54,892 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-07-20 11:28:54,896 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-07-20 11:28:54,896 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 11:28:53" (1/3) ...
[2020-07-20 11:28:54,897 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b52768e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:28:54, skipping insertion in model container
[2020-07-20 11:28:54,897 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:28:54" (2/3) ...
[2020-07-20 11:28:54,898 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b52768e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:28:54, skipping insertion in model container
[2020-07-20 11:28:54,898 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:28:54" (3/3) ...
[2020-07-20 11:28:54,900 INFO  L109   eAbstractionObserver]: Analyzing ICFG fo_test.i
[2020-07-20 11:28:54,910 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION
[2020-07-20 11:28:54,916 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-07-20 11:28:54,930 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-07-20 11:28:54,953 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-07-20 11:28:54,953 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-07-20 11:28:54,953 INFO  L377      AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect
[2020-07-20 11:28:54,953 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-07-20 11:28:54,954 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-07-20 11:28:54,954 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-07-20 11:28:54,954 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-07-20 11:28:54,954 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-07-20 11:28:54,974 INFO  L276                IsEmpty]: Start isEmpty. Operand 29 states.
[2020-07-20 11:28:54,980 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2020-07-20 11:28:54,981 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-20 11:28:54,982 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 11:28:54,983 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 11:28:54,989 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 11:28:54,989 INFO  L82        PathProgramCache]: Analyzing trace with hash -722045737, now seen corresponding path program 1 times
[2020-07-20 11:28:54,999 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 11:28:55,000 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2084247299]
[2020-07-20 11:28:55,000 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 11:28:55,223 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-07-20 11:28:55,227 INFO  L263         TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 3 conjunts are in the unsatisfiable core
[2020-07-20 11:28:55,237 INFO  L286         TraceCheckSpWp]: Computing forward predicates...
[2020-07-20 11:28:55,283 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-07-20 11:28:55,283 INFO  L324         TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2020-07-20 11:28:55,285 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2084247299]
[2020-07-20 11:28:55,288 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-07-20 11:28:55,288 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2020-07-20 11:28:55,289 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244256160]
[2020-07-20 11:28:55,294 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2020-07-20 11:28:55,295 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-07-20 11:28:55,309 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2020-07-20 11:28:55,310 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-20 11:28:55,313 INFO  L87              Difference]: Start difference. First operand 29 states. Second operand 3 states.
[2020-07-20 11:28:55,360 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-07-20 11:28:55,361 INFO  L93              Difference]: Finished difference Result 47 states and 51 transitions.
[2020-07-20 11:28:55,362 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2020-07-20 11:28:55,364 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 18
[2020-07-20 11:28:55,364 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-07-20 11:28:55,378 INFO  L225             Difference]: With dead ends: 47
[2020-07-20 11:28:55,378 INFO  L226             Difference]: Without dead ends: 19
[2020-07-20 11:28:55,381 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2020-07-20 11:28:55,399 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19 states.
[2020-07-20 11:28:55,416 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19.
[2020-07-20 11:28:55,418 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 19 states.
[2020-07-20 11:28:55,419 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 18 transitions.
[2020-07-20 11:28:55,421 INFO  L78                 Accepts]: Start accepts. Automaton has 19 states and 18 transitions. Word has length 18
[2020-07-20 11:28:55,421 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-07-20 11:28:55,421 INFO  L479      AbstractCegarLoop]: Abstraction has 19 states and 18 transitions.
[2020-07-20 11:28:55,422 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2020-07-20 11:28:55,422 INFO  L276                IsEmpty]: Start isEmpty. Operand 19 states and 18 transitions.
[2020-07-20 11:28:55,423 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2020-07-20 11:28:55,423 INFO  L414         BasicCegarLoop]: Found error trace
[2020-07-20 11:28:55,423 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-07-20 11:28:55,637 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 11:28:55,638 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-07-20 11:28:55,639 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-07-20 11:28:55,639 INFO  L82        PathProgramCache]: Analyzing trace with hash -1115072747, now seen corresponding path program 1 times
[2020-07-20 11:28:55,640 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-07-20 11:28:55,640 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1680479982]
[2020-07-20 11:28:55,640 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 11:28:55,796 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-07-20 11:28:55,797 INFO  L221             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-07-20 11:28:55,812 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is sat
[2020-07-20 11:28:55,813 INFO  L221             TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2020-07-20 11:28:55,840 INFO  L174   FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace
[2020-07-20 11:28:55,840 INFO  L520         BasicCegarLoop]: Counterexample might be feasible
[2020-07-20 11:28:56,054 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-07-20 11:28:56,093 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 11:28:56 BoogieIcfgContainer
[2020-07-20 11:28:56,093 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2020-07-20 11:28:56,096 INFO  L168              Benchmark]: Toolchain (without parser) took 2585.11 ms. Allocated memory was 137.9 MB in the beginning and 234.4 MB in the end (delta: 96.5 MB). Free memory was 101.8 MB in the beginning and 149.3 MB in the end (delta: -47.4 MB). Peak memory consumption was 49.0 MB. Max. memory is 7.1 GB.
[2020-07-20 11:28:56,097 INFO  L168              Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
[2020-07-20 11:28:56,098 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 712.87 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 101.4 MB in the beginning and 166.6 MB in the end (delta: -65.2 MB). Peak memory consumption was 28.9 MB. Max. memory is 7.1 GB.
[2020-07-20 11:28:56,099 INFO  L168              Benchmark]: Boogie Preprocessor took 59.03 ms. Allocated memory is still 202.4 MB. Free memory was 166.6 MB in the beginning and 163.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB.
[2020-07-20 11:28:56,100 INFO  L168              Benchmark]: RCFGBuilder took 604.70 ms. Allocated memory is still 202.4 MB. Free memory was 163.8 MB in the beginning and 118.2 MB in the end (delta: 45.7 MB). Peak memory consumption was 45.7 MB. Max. memory is 7.1 GB.
[2020-07-20 11:28:56,101 INFO  L168              Benchmark]: TraceAbstraction took 1201.10 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 117.5 MB in the beginning and 149.3 MB in the end (delta: -31.8 MB). Peak memory consumption was 224.6 kB. Max. memory is 7.1 GB.
[2020-07-20 11:28:56,105 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.22 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 712.87 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 101.4 MB in the beginning and 166.6 MB in the end (delta: -65.2 MB). Peak memory consumption was 28.9 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 59.03 ms. Allocated memory is still 202.4 MB. Free memory was 166.6 MB in the beginning and 163.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 604.70 ms. Allocated memory is still 202.4 MB. Free memory was 163.8 MB in the beginning and 118.2 MB in the end (delta: 45.7 MB). Peak memory consumption was 45.7 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 1201.10 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 117.5 MB in the beginning and 149.3 MB in the end (delta: -31.8 MB). Peak memory consumption was 224.6 kB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - UnprovableResult [Line: 960]: Unable to prove that call of __VERIFIER_error() unreachable
    Unable to prove that call of __VERIFIER_error() unreachable
 Reason: overapproximation of large string literal at line 1158. 
Possible FailurePath: 
[L1152]              int globalState = 0;
         VAL         [\old(globalState)=6, globalState=0]
[L1158]  CALL, EXPR  l_open("unknown",00)
         VAL         [\old(flags)=0, \old(globalState)=0, file={2:0}, globalState=0]
[L1170]              int fd = open(file,flags);
         VAL         [\old(flags)=0, \old(globalState)=0, fd=0, file={2:0}, file={2:0}, flags=0, globalState=0, open(file,flags)=0]
[L1171]  COND FALSE  !(fd>0)
         VAL         [\old(flags)=0, \old(globalState)=0, fd=0, file={2:0}, file={2:0}, flags=0, globalState=0, open(file,flags)=0]
[L1172]              return fd;
         VAL         [\old(flags)=0, \old(globalState)=0, \result=0, fd=0, file={2:0}, file={2:0}, flags=0, globalState=0, open(file,flags)=0]
[L1158]  RET, EXPR   l_open("unknown",00)
         VAL         [\old(argc)=13, \old(globalState)=0, argc=13, argv={14:12}, argv={14:12}, globalState=0, l_open("unknown",00)=0]
[L1158]              int file = l_open("unknown",00);
[L1159]              void* cbuf = (void*) malloc(sizeof(char)*100);
         VAL         [\old(argc)=13, \old(globalState)=0, argc=13, argv={14:12}, argv={14:12}, cbuf={-1:0}, file=0, globalState=0, malloc(sizeof(char)*100)={-1:0}]
[L1160]  CALL        l_read(file,cbuf,99)
         VAL         [\old(count)=99, \old(fd)=0, \old(globalState)=0, cbuf={-1:0}, globalState=0]
[L1165]              (globalState == 1) ? (0) : __blast_assert ()
         VAL         [\old(count)=99, \old(fd)=0, \old(globalState)=0, cbuf={-1:0}, cbuf={-1:0}, count=99, fd=0, globalState=0]
[L1165]  CALL        __blast_assert ()
         VAL         [\old(globalState)=0, globalState=0]
[L960]               __VERIFIER_error()
         VAL         [\old(globalState)=0, globalState=0]

  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 7 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 27 SDtfs, 9 SDslu, 16 SDs, 0 SdLazy, 3 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 527 SizeOfPredicates, 0 NumberOfNonLiveVariables, 129 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 could not prove your program: unable to determine feasibility of some traces
Received shutdown request...