/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...