/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/fo_test.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 22:28:21,228 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 22:28:21,230 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 22:28:21,242 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 22:28:21,243 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 22:28:21,244 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 22:28:21,245 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 22:28:21,247 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 22:28:21,248 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 22:28:21,249 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 22:28:21,250 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 22:28:21,251 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 22:28:21,252 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 22:28:21,253 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 22:28:21,254 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 22:28:21,255 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 22:28:21,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 22:28:21,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 22:28:21,258 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 22:28:21,260 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 22:28:21,262 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 22:28:21,263 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 22:28:21,265 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 22:28:21,265 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 22:28:21,268 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-17 22:28:21,268 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-17 22:28:21,269 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-17 22:28:21,269 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-17 22:28:21,270 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-17 22:28:21,271 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-17 22:28:21,271 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 22:28:21,272 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 22:28:21,273 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 22:28:21,273 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 22:28:21,274 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 22:28:21,275 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 22:28:21,275 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 22:28:21,275 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 22:28:21,276 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 22:28:21,277 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 22:28:21,277 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 22:28:21,278 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 [2020-07-17 22:28:21,293 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 22:28:21,293 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 22:28:21,294 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-17 22:28:21,295 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-17 22:28:21,295 INFO L138 SettingsManager]: * Use SBE=true [2020-07-17 22:28:21,295 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 22:28:21,295 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 22:28:21,296 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 22:28:21,296 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 22:28:21,296 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 22:28:21,296 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 22:28:21,296 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 22:28:21,296 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 22:28:21,297 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 22:28:21,297 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 22:28:21,297 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 22:28:21,297 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 22:28:21,297 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 22:28:21,298 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-17 22:28:21,298 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 22:28:21,298 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 22:28:21,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 22:28:21,298 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 22:28:21,299 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-17 22:28:21,299 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-17 22:28:21,299 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-17 22:28:21,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-17 22:28:21,299 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 22:28:21,299 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-17 22:28:21,300 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-17 22:28:21,579 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 22:28:21,597 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 22:28:21,600 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 22:28:21,603 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 22:28:21,603 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 22:28:21,604 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/fo_test.i [2020-07-17 22:28:21,686 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94c81a9de/4604873e7d8d47c2a0ef6e4676beb9e9/FLAG4b491ccea [2020-07-17 22:28:22,253 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 22:28:22,254 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/fo_test.i [2020-07-17 22:28:22,269 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94c81a9de/4604873e7d8d47c2a0ef6e4676beb9e9/FLAG4b491ccea [2020-07-17 22:28:22,538 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94c81a9de/4604873e7d8d47c2a0ef6e4676beb9e9 [2020-07-17 22:28:22,546 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 22:28:22,549 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 22:28:22,550 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 22:28:22,550 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 22:28:22,554 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 22:28:22,556 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 10:28:22" (1/1) ... [2020-07-17 22:28:22,559 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16469d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:28:22, skipping insertion in model container [2020-07-17 22:28:22,559 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 10:28:22" (1/1) ... [2020-07-17 22:28:22,566 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 22:28:22,628 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 22:28:23,084 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 22:28:23,093 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 22:28:23,151 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 22:28:23,241 INFO L208 MainTranslator]: Completed translation [2020-07-17 22:28:23,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:28:23 WrapperNode [2020-07-17 22:28:23,242 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 22:28:23,243 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 22:28:23,243 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 22:28:23,243 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 22:28:23,257 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:28:23" (1/1) ... [2020-07-17 22:28:23,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:28:23" (1/1) ... [2020-07-17 22:28:23,275 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:28:23" (1/1) ... [2020-07-17 22:28:23,275 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:28:23" (1/1) ... [2020-07-17 22:28:23,296 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:28:23" (1/1) ... [2020-07-17 22:28:23,298 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:28:23" (1/1) ... [2020-07-17 22:28:23,302 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:28:23" (1/1) ... [2020-07-17 22:28:23,309 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 22:28:23,310 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 22:28:23,310 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 22:28:23,310 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 22:28:23,311 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:28:23" (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 [2020-07-17 22:28:23,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 22:28:23,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 22:28:23,380 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-07-17 22:28:23,380 INFO L138 BoogieDeclarations]: Found implementation of procedure open [2020-07-17 22:28:23,381 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 22:28:23,381 INFO L138 BoogieDeclarations]: Found implementation of procedure l_read [2020-07-17 22:28:23,381 INFO L138 BoogieDeclarations]: Found implementation of procedure l_open [2020-07-17 22:28:23,382 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 22:28:23,382 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-17 22:28:23,382 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-17 22:28:23,382 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-17 22:28:23,382 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-17 22:28:23,383 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-17 22:28:23,383 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-17 22:28:23,383 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-17 22:28:23,384 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-17 22:28:23,384 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-17 22:28:23,384 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-17 22:28:23,384 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-17 22:28:23,385 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-17 22:28:23,385 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-17 22:28:23,385 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-17 22:28:23,385 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-17 22:28:23,385 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-17 22:28:23,385 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-17 22:28:23,386 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-17 22:28:23,386 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-17 22:28:23,386 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-17 22:28:23,386 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-17 22:28:23,386 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-17 22:28:23,386 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-17 22:28:23,386 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-17 22:28:23,386 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-17 22:28:23,387 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-17 22:28:23,387 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-17 22:28:23,387 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-17 22:28:23,387 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-17 22:28:23,387 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-17 22:28:23,387 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-17 22:28:23,388 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-17 22:28:23,388 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-17 22:28:23,388 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-17 22:28:23,388 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-17 22:28:23,388 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-17 22:28:23,388 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-17 22:28:23,388 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-17 22:28:23,389 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-17 22:28:23,389 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-17 22:28:23,389 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-17 22:28:23,389 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-17 22:28:23,389 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-17 22:28:23,389 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-17 22:28:23,389 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-17 22:28:23,389 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-17 22:28:23,390 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-17 22:28:23,390 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-17 22:28:23,390 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-17 22:28:23,390 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-17 22:28:23,390 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-17 22:28:23,391 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-17 22:28:23,391 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-17 22:28:23,391 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-17 22:28:23,391 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-17 22:28:23,391 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-17 22:28:23,391 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-17 22:28:23,392 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-17 22:28:23,392 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-17 22:28:23,392 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-17 22:28:23,393 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-17 22:28:23,393 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-17 22:28:23,393 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-17 22:28:23,393 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-17 22:28:23,393 INFO L130 BoogieDeclarations]: Found specification of procedure __secure_getenv [2020-07-17 22:28:23,394 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-17 22:28:23,394 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-17 22:28:23,395 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-17 22:28:23,395 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-17 22:28:23,395 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-17 22:28:23,395 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-17 22:28:23,395 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-17 22:28:23,395 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-17 22:28:23,396 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-17 22:28:23,396 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-17 22:28:23,397 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-17 22:28:23,397 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-17 22:28:23,397 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-17 22:28:23,397 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-17 22:28:23,398 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-17 22:28:23,398 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-17 22:28:23,399 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-17 22:28:23,399 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-17 22:28:23,400 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-17 22:28:23,400 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-17 22:28:23,400 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-17 22:28:23,400 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-17 22:28:23,400 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-17 22:28:23,400 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-17 22:28:23,400 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-17 22:28:23,400 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-17 22:28:23,401 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-17 22:28:23,401 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-17 22:28:23,401 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-17 22:28:23,401 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-17 22:28:23,401 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-17 22:28:23,401 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-17 22:28:23,401 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-17 22:28:23,402 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-17 22:28:23,402 INFO L130 BoogieDeclarations]: Found specification of procedure posix_openpt [2020-07-17 22:28:23,403 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-17 22:28:23,403 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-07-17 22:28:23,403 INFO L130 BoogieDeclarations]: Found specification of procedure stat [2020-07-17 22:28:23,403 INFO L130 BoogieDeclarations]: Found specification of procedure fstat [2020-07-17 22:28:23,403 INFO L130 BoogieDeclarations]: Found specification of procedure fstatat [2020-07-17 22:28:23,403 INFO L130 BoogieDeclarations]: Found specification of procedure lstat [2020-07-17 22:28:23,404 INFO L130 BoogieDeclarations]: Found specification of procedure chmod [2020-07-17 22:28:23,404 INFO L130 BoogieDeclarations]: Found specification of procedure lchmod [2020-07-17 22:28:23,404 INFO L130 BoogieDeclarations]: Found specification of procedure fchmod [2020-07-17 22:28:23,404 INFO L130 BoogieDeclarations]: Found specification of procedure fchmodat [2020-07-17 22:28:23,405 INFO L130 BoogieDeclarations]: Found specification of procedure umask [2020-07-17 22:28:23,405 INFO L130 BoogieDeclarations]: Found specification of procedure mkdir [2020-07-17 22:28:23,406 INFO L130 BoogieDeclarations]: Found specification of procedure mkdirat [2020-07-17 22:28:23,406 INFO L130 BoogieDeclarations]: Found specification of procedure mknod [2020-07-17 22:28:23,406 INFO L130 BoogieDeclarations]: Found specification of procedure mknodat [2020-07-17 22:28:23,406 INFO L130 BoogieDeclarations]: Found specification of procedure mkfifo [2020-07-17 22:28:23,407 INFO L130 BoogieDeclarations]: Found specification of procedure mkfifoat [2020-07-17 22:28:23,407 INFO L130 BoogieDeclarations]: Found specification of procedure utimensat [2020-07-17 22:28:23,407 INFO L130 BoogieDeclarations]: Found specification of procedure futimens [2020-07-17 22:28:23,407 INFO L130 BoogieDeclarations]: Found specification of procedure __fxstat [2020-07-17 22:28:23,407 INFO L130 BoogieDeclarations]: Found specification of procedure __xstat [2020-07-17 22:28:23,407 INFO L130 BoogieDeclarations]: Found specification of procedure __lxstat [2020-07-17 22:28:23,408 INFO L130 BoogieDeclarations]: Found specification of procedure __fxstatat [2020-07-17 22:28:23,408 INFO L130 BoogieDeclarations]: Found specification of procedure __xmknod [2020-07-17 22:28:23,408 INFO L130 BoogieDeclarations]: Found specification of procedure __xmknodat [2020-07-17 22:28:23,408 INFO L130 BoogieDeclarations]: Found specification of procedure fcntl [2020-07-17 22:28:23,408 INFO L130 BoogieDeclarations]: Found specification of procedure open [2020-07-17 22:28:23,409 INFO L130 BoogieDeclarations]: Found specification of procedure openat [2020-07-17 22:28:23,409 INFO L130 BoogieDeclarations]: Found specification of procedure openat64 [2020-07-17 22:28:23,409 INFO L130 BoogieDeclarations]: Found specification of procedure creat [2020-07-17 22:28:23,410 INFO L130 BoogieDeclarations]: Found specification of procedure lockf [2020-07-17 22:28:23,413 INFO L130 BoogieDeclarations]: Found specification of procedure posix_fadvise [2020-07-17 22:28:23,413 INFO L130 BoogieDeclarations]: Found specification of procedure posix_fallocate [2020-07-17 22:28:23,414 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-07-17 22:28:23,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 22:28:23,422 INFO L130 BoogieDeclarations]: Found specification of procedure l_read [2020-07-17 22:28:23,422 INFO L130 BoogieDeclarations]: Found specification of procedure l_open [2020-07-17 22:28:23,422 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 22:28:23,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-17 22:28:23,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-17 22:28:23,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 22:28:23,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 22:28:23,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 22:28:23,979 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 22:28:23,979 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-17 22:28:23,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 10:28:23 BoogieIcfgContainer [2020-07-17 22:28:23,983 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 22:28:23,984 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 22:28:23,985 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 22:28:23,988 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 22:28:23,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 10:28:22" (1/3) ... [2020-07-17 22:28:23,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41223e9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 10:28:23, skipping insertion in model container [2020-07-17 22:28:23,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:28:23" (2/3) ... [2020-07-17 22:28:23,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41223e9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 10:28:23, skipping insertion in model container [2020-07-17 22:28:23,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 10:28:23" (3/3) ... [2020-07-17 22:28:23,992 INFO L109 eAbstractionObserver]: Analyzing ICFG fo_test.i [2020-07-17 22:28:24,004 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-17 22:28:24,015 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 22:28:24,031 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 22:28:24,055 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 22:28:24,056 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 22:28:24,056 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-17 22:28:24,056 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 22:28:24,056 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 22:28:24,057 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 22:28:24,057 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 22:28:24,057 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 22:28:24,076 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-07-17 22:28:24,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-17 22:28:24,084 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:28:24,085 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 22:28:24,086 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:28:24,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:28:24,091 INFO L82 PathProgramCache]: Analyzing trace with hash -722045737, now seen corresponding path program 1 times [2020-07-17 22:28:24,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:28:24,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884169418] [2020-07-17 22:28:24,102 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:28:24,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:28:24,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:28:24,421 INFO L280 TraceCheckUtils]: 0: Hoare triple {43#(and (= |#valid| |old(#valid)|) (= ~globalState~0 |old(~globalState~0)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#length)| |#length|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(8);~globalState~0 := 0; {32#true} is VALID [2020-07-17 22:28:24,422 INFO L280 TraceCheckUtils]: 1: Hoare triple {32#true} assume true; {32#true} is VALID [2020-07-17 22:28:24,422 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {32#true} {32#true} #42#return; {32#true} is VALID [2020-07-17 22:28:24,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:28:24,473 INFO L280 TraceCheckUtils]: 0: Hoare triple {44#(= ~globalState~0 |old(~globalState~0)|)} ~file.base, ~file.offset := #in~file.base, #in~file.offset;~flags := #in~flags;havoc #t~nondet11;~fd~0 := #t~nondet11; {32#true} is VALID [2020-07-17 22:28:24,474 INFO L280 TraceCheckUtils]: 1: Hoare triple {32#true} assume ~fd~0 > 0;~globalState~0 := 1; {42#(= 1 ~globalState~0)} is VALID [2020-07-17 22:28:24,475 INFO L280 TraceCheckUtils]: 2: Hoare triple {42#(= 1 ~globalState~0)} #res := ~fd~0; {42#(= 1 ~globalState~0)} is VALID [2020-07-17 22:28:24,476 INFO L280 TraceCheckUtils]: 3: Hoare triple {42#(= 1 ~globalState~0)} assume true; {42#(= 1 ~globalState~0)} is VALID [2020-07-17 22:28:24,477 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {42#(= 1 ~globalState~0)} {32#true} #38#return; {42#(= 1 ~globalState~0)} is VALID [2020-07-17 22:28:24,479 INFO L263 TraceCheckUtils]: 0: Hoare triple {32#true} call ULTIMATE.init(); {43#(and (= |#valid| |old(#valid)|) (= ~globalState~0 |old(~globalState~0)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#length)| |#length|))} is VALID [2020-07-17 22:28:24,479 INFO L280 TraceCheckUtils]: 1: Hoare triple {43#(and (= |#valid| |old(#valid)|) (= ~globalState~0 |old(~globalState~0)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#length)| |#length|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(8);~globalState~0 := 0; {32#true} is VALID [2020-07-17 22:28:24,480 INFO L280 TraceCheckUtils]: 2: Hoare triple {32#true} assume true; {32#true} is VALID [2020-07-17 22:28:24,480 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {32#true} {32#true} #42#return; {32#true} is VALID [2020-07-17 22:28:24,480 INFO L263 TraceCheckUtils]: 4: Hoare triple {32#true} call #t~ret12 := main(#in~argc, #in~argv.base, #in~argv.offset); {32#true} is VALID [2020-07-17 22:28:24,481 INFO L280 TraceCheckUtils]: 5: Hoare triple {32#true} ~argc := #in~argc;~argv.base, ~argv.offset := #in~argv.base, #in~argv.offset; {32#true} is VALID [2020-07-17 22:28:24,482 INFO L263 TraceCheckUtils]: 6: Hoare triple {32#true} call #t~ret7 := l_open(#t~string6.base, #t~string6.offset, 0); {44#(= ~globalState~0 |old(~globalState~0)|)} is VALID [2020-07-17 22:28:24,482 INFO L280 TraceCheckUtils]: 7: Hoare triple {44#(= ~globalState~0 |old(~globalState~0)|)} ~file.base, ~file.offset := #in~file.base, #in~file.offset;~flags := #in~flags;havoc #t~nondet11;~fd~0 := #t~nondet11; {32#true} is VALID [2020-07-17 22:28:24,483 INFO L280 TraceCheckUtils]: 8: Hoare triple {32#true} assume ~fd~0 > 0;~globalState~0 := 1; {42#(= 1 ~globalState~0)} is VALID [2020-07-17 22:28:24,484 INFO L280 TraceCheckUtils]: 9: Hoare triple {42#(= 1 ~globalState~0)} #res := ~fd~0; {42#(= 1 ~globalState~0)} is VALID [2020-07-17 22:28:24,485 INFO L280 TraceCheckUtils]: 10: Hoare triple {42#(= 1 ~globalState~0)} assume true; {42#(= 1 ~globalState~0)} is VALID [2020-07-17 22:28:24,486 INFO L275 TraceCheckUtils]: 11: Hoare quadruple {42#(= 1 ~globalState~0)} {32#true} #38#return; {42#(= 1 ~globalState~0)} is VALID [2020-07-17 22:28:24,487 INFO L280 TraceCheckUtils]: 12: Hoare triple {42#(= 1 ~globalState~0)} assume -2147483648 <= #t~ret7 && #t~ret7 <= 2147483647;~file~0 := #t~ret7;havoc #t~ret7;call #t~malloc8.base, #t~malloc8.offset := #Ultimate.allocOnHeap(100);~cbuf~0.base, ~cbuf~0.offset := #t~malloc8.base, #t~malloc8.offset; {42#(= 1 ~globalState~0)} is VALID [2020-07-17 22:28:24,488 INFO L263 TraceCheckUtils]: 13: Hoare triple {42#(= 1 ~globalState~0)} call #t~ret9 := l_read(~file~0, ~cbuf~0.base, ~cbuf~0.offset, 99); {42#(= 1 ~globalState~0)} is VALID [2020-07-17 22:28:24,489 INFO L280 TraceCheckUtils]: 14: Hoare triple {42#(= 1 ~globalState~0)} ~fd := #in~fd;~cbuf.base, ~cbuf.offset := #in~cbuf.base, #in~cbuf.offset;~count := #in~count; {42#(= 1 ~globalState~0)} is VALID [2020-07-17 22:28:24,490 INFO L280 TraceCheckUtils]: 15: Hoare triple {42#(= 1 ~globalState~0)} assume !(1 == ~globalState~0); {33#false} is VALID [2020-07-17 22:28:24,490 INFO L263 TraceCheckUtils]: 16: Hoare triple {33#false} call __blast_assert(); {33#false} is VALID [2020-07-17 22:28:24,491 INFO L280 TraceCheckUtils]: 17: Hoare triple {33#false} assume !false; {33#false} is VALID [2020-07-17 22:28:24,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 22:28:24,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884169418] [2020-07-17 22:28:24,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 22:28:24,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 22:28:24,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400064359] [2020-07-17 22:28:24,502 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-07-17 22:28:24,505 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-17 22:28:24,508 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-17 22:28:24,546 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 18 edges. 18 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:28:24,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 22:28:24,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 22:28:24,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 22:28:24,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-17 22:28:24,558 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 5 states. [2020-07-17 22:28:24,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:28:24,963 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2020-07-17 22:28:24,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-17 22:28:24,963 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-07-17 22:28:24,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 22:28:24,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-17 22:28:24,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 54 transitions. [2020-07-17 22:28:24,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-17 22:28:24,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 54 transitions. [2020-07-17 22:28:24,982 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 7 states and 54 transitions. [2020-07-17 22:28:25,079 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 54 edges. 54 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:28:25,091 INFO L225 Difference]: With dead ends: 50 [2020-07-17 22:28:25,092 INFO L226 Difference]: Without dead ends: 19 [2020-07-17 22:28:25,096 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-07-17 22:28:25,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-07-17 22:28:25,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-07-17 22:28:25,163 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-17 22:28:25,163 INFO L82 GeneralOperation]: Start isEquivalent. First operand 19 states. Second operand 19 states. [2020-07-17 22:28:25,164 INFO L74 IsIncluded]: Start isIncluded. First operand 19 states. Second operand 19 states. [2020-07-17 22:28:25,164 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 19 states. [2020-07-17 22:28:25,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:28:25,168 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2020-07-17 22:28:25,168 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 18 transitions. [2020-07-17 22:28:25,168 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:28:25,169 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:28:25,169 INFO L74 IsIncluded]: Start isIncluded. First operand 19 states. Second operand 19 states. [2020-07-17 22:28:25,169 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 19 states. [2020-07-17 22:28:25,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:28:25,172 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2020-07-17 22:28:25,173 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 18 transitions. [2020-07-17 22:28:25,173 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:28:25,173 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:28:25,174 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-17 22:28:25,174 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-17 22:28:25,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-07-17 22:28:25,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 18 transitions. [2020-07-17 22:28:25,178 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 18 transitions. Word has length 18 [2020-07-17 22:28:25,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 22:28:25,179 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 18 transitions. [2020-07-17 22:28:25,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 22:28:25,179 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 18 transitions. [2020-07-17 22:28:25,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-17 22:28:25,180 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:28:25,180 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 22:28:25,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 22:28:25,181 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:28:25,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:28:25,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1115072747, now seen corresponding path program 1 times [2020-07-17 22:28:25,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:28:25,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656268002] [2020-07-17 22:28:25,183 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:28:25,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 22:28:25,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 22:28:25,257 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-17 22:28:25,257 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 22:28:25,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 22:28:25,301 WARN L170 areAnnotationChecker]: ULTIMATE.initENTRY has no Hoare annotation [2020-07-17 22:28:25,302 WARN L170 areAnnotationChecker]: l_readENTRY has no Hoare annotation [2020-07-17 22:28:25,302 WARN L170 areAnnotationChecker]: l_openENTRY has no Hoare annotation [2020-07-17 22:28:25,302 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-17 22:28:25,302 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-17 22:28:25,302 WARN L170 areAnnotationChecker]: __blast_assertENTRY has no Hoare annotation [2020-07-17 22:28:25,302 WARN L170 areAnnotationChecker]: __blast_assertENTRY has no Hoare annotation [2020-07-17 22:28:25,303 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-17 22:28:25,303 WARN L170 areAnnotationChecker]: openENTRY has no Hoare annotation [2020-07-17 22:28:25,303 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-17 22:28:25,303 WARN L170 areAnnotationChecker]: L1165 has no Hoare annotation [2020-07-17 22:28:25,303 WARN L170 areAnnotationChecker]: L1165 has no Hoare annotation [2020-07-17 22:28:25,303 WARN L170 areAnnotationChecker]: L1171 has no Hoare annotation [2020-07-17 22:28:25,304 WARN L170 areAnnotationChecker]: L1171 has no Hoare annotation [2020-07-17 22:28:25,304 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-17 22:28:25,304 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-17 22:28:25,304 WARN L170 areAnnotationChecker]: __blast_assertFINAL has no Hoare annotation [2020-07-17 22:28:25,304 WARN L170 areAnnotationChecker]: L1158 has no Hoare annotation [2020-07-17 22:28:25,305 WARN L170 areAnnotationChecker]: L1158 has no Hoare annotation [2020-07-17 22:28:25,305 WARN L170 areAnnotationChecker]: openFINAL has no Hoare annotation [2020-07-17 22:28:25,305 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-17 22:28:25,305 WARN L170 areAnnotationChecker]: L1165-3 has no Hoare annotation [2020-07-17 22:28:25,305 WARN L170 areAnnotationChecker]: L1165-2 has no Hoare annotation [2020-07-17 22:28:25,305 WARN L170 areAnnotationChecker]: L1165-2 has no Hoare annotation [2020-07-17 22:28:25,306 WARN L170 areAnnotationChecker]: L1171-2 has no Hoare annotation [2020-07-17 22:28:25,306 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-17 22:28:25,306 WARN L170 areAnnotationChecker]: __blast_assertEXIT has no Hoare annotation [2020-07-17 22:28:25,306 WARN L170 areAnnotationChecker]: L1158-1 has no Hoare annotation [2020-07-17 22:28:25,308 WARN L170 areAnnotationChecker]: l_readFINAL has no Hoare annotation [2020-07-17 22:28:25,309 WARN L170 areAnnotationChecker]: l_openFINAL has no Hoare annotation [2020-07-17 22:28:25,309 WARN L170 areAnnotationChecker]: L1160 has no Hoare annotation [2020-07-17 22:28:25,309 WARN L170 areAnnotationChecker]: L1160 has no Hoare annotation [2020-07-17 22:28:25,309 WARN L170 areAnnotationChecker]: l_readEXIT has no Hoare annotation [2020-07-17 22:28:25,309 WARN L170 areAnnotationChecker]: l_openEXIT has no Hoare annotation [2020-07-17 22:28:25,309 WARN L170 areAnnotationChecker]: L1160-1 has no Hoare annotation [2020-07-17 22:28:25,310 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-17 22:28:25,310 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-17 22:28:25,310 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-17 22:28:25,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 10:28:25 BoogieIcfgContainer [2020-07-17 22:28:25,313 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 22:28:25,317 INFO L168 Benchmark]: Toolchain (without parser) took 2768.54 ms. Allocated memory was 144.7 MB in the beginning and 234.4 MB in the end (delta: 89.7 MB). Free memory was 101.4 MB in the beginning and 98.5 MB in the end (delta: 2.8 MB). Peak memory consumption was 92.5 MB. Max. memory is 7.1 GB. [2020-07-17 22:28:25,318 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 144.7 MB. Free memory is still 120.6 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-17 22:28:25,319 INFO L168 Benchmark]: CACSL2BoogieTranslator took 692.34 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 100.9 MB in the beginning and 164.1 MB in the end (delta: -63.2 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2020-07-17 22:28:25,320 INFO L168 Benchmark]: Boogie Preprocessor took 67.05 ms. Allocated memory is still 202.4 MB. Free memory was 164.1 MB in the beginning and 161.2 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-07-17 22:28:25,320 INFO L168 Benchmark]: RCFGBuilder took 673.14 ms. Allocated memory is still 202.4 MB. Free memory was 161.2 MB in the beginning and 109.2 MB in the end (delta: 52.0 MB). Peak memory consumption was 52.0 MB. Max. memory is 7.1 GB. [2020-07-17 22:28:25,321 INFO L168 Benchmark]: TraceAbstraction took 1329.11 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 108.2 MB in the beginning and 98.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 41.7 MB. Max. memory is 7.1 GB. [2020-07-17 22:28:25,325 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 144.7 MB. Free memory is still 120.6 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 692.34 ms. Allocated memory was 144.7 MB in the beginning and 202.4 MB in the end (delta: 57.7 MB). Free memory was 100.9 MB in the beginning and 164.1 MB in the end (delta: -63.2 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 67.05 ms. Allocated memory is still 202.4 MB. Free memory was 164.1 MB in the beginning and 161.2 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 673.14 ms. Allocated memory is still 202.4 MB. Free memory was 161.2 MB in the beginning and 109.2 MB in the end (delta: 52.0 MB). Peak memory consumption was 52.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1329.11 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 108.2 MB in the beginning and 98.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 41.7 MB. 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)=104, 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)=108, \old(globalState)=0, argc=108, argv={105:103}, argv={105:103}, 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)=108, \old(globalState)=0, argc=108, argv={105:103}, argv={105:103}, 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: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 29 SDtfs, 22 SDslu, 15 SDs, 0 SdLazy, 42 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s 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, 0.2s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 918 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 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...