/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/heap-data/quick_sort_split.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 12:10:20,251 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 12:10:20,255 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 12:10:20,297 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 12:10:20,297 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 12:10:20,306 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 12:10:20,309 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 12:10:20,313 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 12:10:20,316 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 12:10:20,319 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 12:10:20,320 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 12:10:20,321 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 12:10:20,321 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 12:10:20,325 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 12:10:20,328 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 12:10:20,329 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 12:10:20,331 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 12:10:20,332 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 12:10:20,333 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 12:10:20,342 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 12:10:20,344 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 12:10:20,345 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 12:10:20,346 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 12:10:20,347 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 12:10:20,360 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 12:10:20,360 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 12:10:20,361 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 12:10:20,361 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 12:10:20,362 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 12:10:20,363 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 12:10:20,363 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 12:10:20,364 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 12:10:20,364 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 12:10:20,365 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 12:10:20,366 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 12:10:20,366 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 12:10:20,367 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 12:10:20,367 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 12:10:20,367 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 12:10:20,368 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 12:10:20,368 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 12:10:20,369 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 12:10:20,392 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 12:10:20,392 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 12:10:20,393 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 12:10:20,394 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 12:10:20,394 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 12:10:20,394 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 12:10:20,394 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 12:10:20,394 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 12:10:20,395 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 12:10:20,395 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 12:10:20,395 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 12:10:20,395 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 12:10:20,395 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 12:10:20,396 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 12:10:20,396 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 12:10:20,396 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 12:10:20,396 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 12:10:20,396 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 12:10:20,397 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 12:10:20,397 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 12:10:20,397 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 12:10:20,397 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 12:10:20,398 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 12:10:20,398 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 12:10:20,398 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 12:10:20,398 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 12:10:20,398 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 12:10:20,399 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 12:10:20,399 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 12:10:20,399 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLEST; [2020-08-18 12:10:20,702 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 12:10:20,726 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 12:10:20,732 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 12:10:20,734 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 12:10:20,735 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 12:10:20,736 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-data/quick_sort_split.i [2020-08-18 12:10:20,813 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c03f5256c/7b373a11f6dc4bd481739551efaa9a3d/FLAG41bb4b942 [2020-08-18 12:10:21,364 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 12:10:21,365 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-data/quick_sort_split.i [2020-08-18 12:10:21,382 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c03f5256c/7b373a11f6dc4bd481739551efaa9a3d/FLAG41bb4b942 [2020-08-18 12:10:21,621 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c03f5256c/7b373a11f6dc4bd481739551efaa9a3d [2020-08-18 12:10:21,632 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 12:10:21,634 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 12:10:21,635 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 12:10:21,635 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 12:10:21,638 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 12:10:21,640 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 12:10:21" (1/1) ... [2020-08-18 12:10:21,643 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6165be1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:10:21, skipping insertion in model container [2020-08-18 12:10:21,643 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 12:10:21" (1/1) ... [2020-08-18 12:10:21,651 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 12:10:21,701 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 12:10:22,150 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 12:10:22,166 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 12:10:22,226 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 12:10:22,308 INFO L208 MainTranslator]: Completed translation [2020-08-18 12:10:22,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:10:22 WrapperNode [2020-08-18 12:10:22,309 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 12:10:22,309 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 12:10:22,310 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 12:10:22,310 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 12:10:22,324 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:10:22" (1/1) ... [2020-08-18 12:10:22,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:10:22" (1/1) ... [2020-08-18 12:10:22,341 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:10:22" (1/1) ... [2020-08-18 12:10:22,342 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:10:22" (1/1) ... [2020-08-18 12:10:22,358 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:10:22" (1/1) ... [2020-08-18 12:10:22,363 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:10:22" (1/1) ... [2020-08-18 12:10:22,367 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:10:22" (1/1) ... [2020-08-18 12:10:22,374 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 12:10:22,378 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 12:10:22,378 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 12:10:22,379 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 12:10:22,381 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:10:22" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 12:10:22,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 12:10:22,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 12:10:22,443 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-08-18 12:10:22,443 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-08-18 12:10:22,444 INFO L138 BoogieDeclarations]: Found implementation of procedure append_to_list [2020-08-18 12:10:22,444 INFO L138 BoogieDeclarations]: Found implementation of procedure create_list [2020-08-18 12:10:22,444 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 12:10:22,444 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 12:10:22,444 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 12:10:22,444 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-08-18 12:10:22,445 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-08-18 12:10:22,445 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-18 12:10:22,445 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-18 12:10:22,445 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-18 12:10:22,445 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-18 12:10:22,446 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-18 12:10:22,446 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-18 12:10:22,446 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-18 12:10:22,446 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-18 12:10:22,446 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-18 12:10:22,447 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-18 12:10:22,447 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-18 12:10:22,447 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-18 12:10:22,447 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-18 12:10:22,447 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-18 12:10:22,447 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-18 12:10:22,448 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-18 12:10:22,448 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-18 12:10:22,448 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-18 12:10:22,448 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-18 12:10:22,448 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-18 12:10:22,448 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-18 12:10:22,448 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-18 12:10:22,449 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-18 12:10:22,449 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-18 12:10:22,449 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-18 12:10:22,449 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-18 12:10:22,449 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-18 12:10:22,449 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-18 12:10:22,449 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-18 12:10:22,450 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-18 12:10:22,450 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-18 12:10:22,450 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-18 12:10:22,450 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-18 12:10:22,450 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-18 12:10:22,450 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-18 12:10:22,451 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-18 12:10:22,451 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-18 12:10:22,451 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-18 12:10:22,451 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-18 12:10:22,451 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-18 12:10:22,451 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-18 12:10:22,451 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-18 12:10:22,452 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-18 12:10:22,452 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-18 12:10:22,452 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-18 12:10:22,452 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-18 12:10:22,452 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-18 12:10:22,452 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-18 12:10:22,452 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-18 12:10:22,453 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-18 12:10:22,453 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 12:10:22,453 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-18 12:10:22,453 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-18 12:10:22,453 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 12:10:22,453 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-18 12:10:22,454 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-18 12:10:22,454 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-18 12:10:22,454 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-18 12:10:22,454 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-18 12:10:22,454 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 12:10:22,454 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-18 12:10:22,455 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-18 12:10:22,455 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-18 12:10:22,455 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-18 12:10:22,457 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-18 12:10:22,457 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-18 12:10:22,458 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-18 12:10:22,458 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-18 12:10:22,459 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-18 12:10:22,459 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-18 12:10:22,459 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-18 12:10:22,459 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-18 12:10:22,459 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-18 12:10:22,459 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-18 12:10:22,460 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-18 12:10:22,460 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-18 12:10:22,460 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-18 12:10:22,460 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-18 12:10:22,460 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-18 12:10:22,460 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-18 12:10:22,460 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-18 12:10:22,461 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-18 12:10:22,461 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-18 12:10:22,461 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-18 12:10:22,461 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-18 12:10:22,461 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-18 12:10:22,461 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-18 12:10:22,461 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-18 12:10:22,461 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-18 12:10:22,461 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-18 12:10:22,462 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-18 12:10:22,462 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-18 12:10:22,462 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-18 12:10:22,462 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-18 12:10:22,462 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-18 12:10:22,462 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-18 12:10:22,462 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-18 12:10:22,462 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-18 12:10:22,462 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-18 12:10:22,462 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-18 12:10:22,463 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-18 12:10:22,463 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-18 12:10:22,463 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-18 12:10:22,463 INFO L130 BoogieDeclarations]: Found specification of procedure append_to_list [2020-08-18 12:10:22,463 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 12:10:22,463 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 12:10:22,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 12:10:22,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 12:10:22,464 INFO L130 BoogieDeclarations]: Found specification of procedure create_list [2020-08-18 12:10:22,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 12:10:22,464 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-18 12:10:22,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 12:10:22,464 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 12:10:22,464 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 12:10:22,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 12:10:22,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 12:10:22,999 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 12:10:23,000 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-18 12:10:23,004 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 12:10:23 BoogieIcfgContainer [2020-08-18 12:10:23,004 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 12:10:23,006 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 12:10:23,006 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 12:10:23,010 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 12:10:23,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 12:10:21" (1/3) ... [2020-08-18 12:10:23,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7889172b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 12:10:23, skipping insertion in model container [2020-08-18 12:10:23,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 12:10:22" (2/3) ... [2020-08-18 12:10:23,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7889172b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 12:10:23, skipping insertion in model container [2020-08-18 12:10:23,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 12:10:23" (3/3) ... [2020-08-18 12:10:23,014 INFO L109 eAbstractionObserver]: Analyzing ICFG quick_sort_split.i [2020-08-18 12:10:23,025 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 12:10:23,034 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-08-18 12:10:23,049 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-08-18 12:10:23,077 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 12:10:23,077 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 12:10:23,077 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 12:10:23,078 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 12:10:23,078 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 12:10:23,078 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 12:10:23,079 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 12:10:23,079 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 12:10:23,100 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-08-18 12:10:23,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-18 12:10:23,107 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:10:23,108 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:10:23,109 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:10:23,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:10:23,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1851020699, now seen corresponding path program 1 times [2020-08-18 12:10:23,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:10:23,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804271018] [2020-08-18 12:10:23,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:10:23,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:10:23,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:10:23,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:10:23,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 12:10:23,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:10:23,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 12:10:23,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [804271018] [2020-08-18 12:10:23,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:10:23,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 12:10:23,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120809799] [2020-08-18 12:10:23,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 12:10:23,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:10:23,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 12:10:23,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 12:10:23,419 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 4 states. [2020-08-18 12:10:23,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:10:23,630 INFO L93 Difference]: Finished difference Result 57 states and 77 transitions. [2020-08-18 12:10:23,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 12:10:23,632 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-08-18 12:10:23,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:10:23,642 INFO L225 Difference]: With dead ends: 57 [2020-08-18 12:10:23,643 INFO L226 Difference]: Without dead ends: 32 [2020-08-18 12:10:23,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 12:10:23,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-08-18 12:10:23,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-08-18 12:10:23,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-08-18 12:10:23,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2020-08-18 12:10:23,690 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 16 [2020-08-18 12:10:23,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:10:23,691 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2020-08-18 12:10:23,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 12:10:23,691 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2020-08-18 12:10:23,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-18 12:10:23,693 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:10:23,693 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:10:23,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 12:10:23,694 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:10:23,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:10:23,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1239240901, now seen corresponding path program 1 times [2020-08-18 12:10:23,695 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:10:23,695 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [811626545] [2020-08-18 12:10:23,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:10:23,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:10:23,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:10:23,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:10:23,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 12:10:23,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:10:23,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 12:10:23,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [811626545] [2020-08-18 12:10:23,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:10:23,832 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 12:10:23,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501672014] [2020-08-18 12:10:23,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 12:10:23,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:10:23,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 12:10:23,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 12:10:23,836 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 5 states. [2020-08-18 12:10:23,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:10:23,967 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2020-08-18 12:10:23,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 12:10:23,968 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-08-18 12:10:23,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:10:23,970 INFO L225 Difference]: With dead ends: 38 [2020-08-18 12:10:23,970 INFO L226 Difference]: Without dead ends: 28 [2020-08-18 12:10:23,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 12:10:23,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-08-18 12:10:23,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-08-18 12:10:23,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-08-18 12:10:23,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2020-08-18 12:10:23,979 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 17 [2020-08-18 12:10:23,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:10:23,980 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2020-08-18 12:10:23,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 12:10:23,980 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2020-08-18 12:10:23,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-18 12:10:23,981 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 12:10:23,981 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 12:10:23,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 12:10:23,982 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 12:10:23,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 12:10:23,982 INFO L82 PathProgramCache]: Analyzing trace with hash -238280333, now seen corresponding path program 1 times [2020-08-18 12:10:23,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 12:10:23,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1947109817] [2020-08-18 12:10:23,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 12:10:24,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:10:24,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 12:10:24,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:10:24,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 12:10:24,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 12:10:24,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 12:10:24,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1947109817] [2020-08-18 12:10:24,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 12:10:24,069 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 12:10:24,069 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587657683] [2020-08-18 12:10:24,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 12:10:24,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 12:10:24,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 12:10:24,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 12:10:24,071 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 5 states. [2020-08-18 12:10:24,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 12:10:24,177 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2020-08-18 12:10:24,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 12:10:24,178 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-08-18 12:10:24,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 12:10:24,179 INFO L225 Difference]: With dead ends: 29 [2020-08-18 12:10:24,179 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 12:10:24,180 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-18 12:10:24,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 12:10:24,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 12:10:24,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 12:10:24,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 12:10:24,181 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-08-18 12:10:24,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 12:10:24,181 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 12:10:24,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 12:10:24,181 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 12:10:24,182 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 12:10:24,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 12:10:24,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 12:10:24,325 INFO L271 CegarLoopResult]: At program point L576(line 576) the Hoare annotation is: true [2020-08-18 12:10:24,325 INFO L271 CegarLoopResult]: At program point L576-1(lines 571 577) the Hoare annotation is: true [2020-08-18 12:10:24,326 INFO L271 CegarLoopResult]: At program point L574(line 574) the Hoare annotation is: true [2020-08-18 12:10:24,326 INFO L268 CegarLoopResult]: For program point L573(lines 573 576) no Hoare annotation was computed. [2020-08-18 12:10:24,326 INFO L268 CegarLoopResult]: For program point L571-1(lines 571 577) no Hoare annotation was computed. [2020-08-18 12:10:24,326 INFO L268 CegarLoopResult]: For program point L571-3(lines 571 577) no Hoare annotation was computed. [2020-08-18 12:10:24,326 INFO L268 CegarLoopResult]: For program point create_listEXIT(lines 569 579) no Hoare annotation was computed. [2020-08-18 12:10:24,327 INFO L264 CegarLoopResult]: At program point create_listENTRY(lines 569 579) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#valid)| |#valid|)) [2020-08-18 12:10:24,327 INFO L268 CegarLoopResult]: For program point create_listFINAL(lines 569 579) no Hoare annotation was computed. [2020-08-18 12:10:24,327 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-18 12:10:24,327 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(#NULL.base)| |#NULL.base|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-08-18 12:10:24,327 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-18 12:10:24,328 INFO L268 CegarLoopResult]: For program point __bswap_32ENTRY(lines 64 68) no Hoare annotation was computed. [2020-08-18 12:10:24,328 INFO L268 CegarLoopResult]: For program point __bswap_32FINAL(lines 64 68) no Hoare annotation was computed. [2020-08-18 12:10:24,328 INFO L268 CegarLoopResult]: For program point __bswap_32EXIT(lines 64 68) no Hoare annotation was computed. [2020-08-18 12:10:24,328 INFO L268 CegarLoopResult]: For program point __bswap_64ENTRY(lines 69 73) no Hoare annotation was computed. [2020-08-18 12:10:24,328 INFO L268 CegarLoopResult]: For program point __bswap_64FINAL(lines 69 73) no Hoare annotation was computed. [2020-08-18 12:10:24,328 INFO L268 CegarLoopResult]: For program point __bswap_64EXIT(lines 69 73) no Hoare annotation was computed. [2020-08-18 12:10:24,329 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-18 12:10:24,329 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-18 12:10:24,329 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-18 12:10:24,329 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-18 12:10:24,329 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 580 602) no Hoare annotation was computed. [2020-08-18 12:10:24,329 INFO L268 CegarLoopResult]: For program point L597-1(lines 580 602) no Hoare annotation was computed. [2020-08-18 12:10:24,329 INFO L268 CegarLoopResult]: For program point L597-2(lines 580 602) no Hoare annotation was computed. [2020-08-18 12:10:24,330 INFO L268 CegarLoopResult]: For program point L593(lines 593 594) no Hoare annotation was computed. [2020-08-18 12:10:24,330 INFO L268 CegarLoopResult]: For program point L593-2(lines 593 594) no Hoare annotation was computed. [2020-08-18 12:10:24,330 INFO L264 CegarLoopResult]: At program point L585-2(lines 585 591) the Hoare annotation is: (and (= 0 main_~high~0.offset) (= main_~low~0.base 0) (= main_~high~0.base 0) (= main_~low~0.offset 0)) [2020-08-18 12:10:24,330 INFO L268 CegarLoopResult]: For program point L581(line 581) no Hoare annotation was computed. [2020-08-18 12:10:24,330 INFO L268 CegarLoopResult]: For program point L598(lines 598 599) no Hoare annotation was computed. [2020-08-18 12:10:24,330 INFO L268 CegarLoopResult]: For program point L598-2(lines 598 599) no Hoare annotation was computed. [2020-08-18 12:10:24,331 INFO L268 CegarLoopResult]: For program point L594(line 594) no Hoare annotation was computed. [2020-08-18 12:10:24,331 INFO L268 CegarLoopResult]: For program point L586(line 586) no Hoare annotation was computed. [2020-08-18 12:10:24,331 INFO L268 CegarLoopResult]: For program point L586-2(line 586) no Hoare annotation was computed. [2020-08-18 12:10:24,331 INFO L268 CegarLoopResult]: For program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 599) no Hoare annotation was computed. [2020-08-18 12:10:24,331 INFO L268 CegarLoopResult]: For program point L599(line 599) no Hoare annotation was computed. [2020-08-18 12:10:24,331 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 594) no Hoare annotation was computed. [2020-08-18 12:10:24,332 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 580 602) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#valid)| |#valid|)) [2020-08-18 12:10:24,332 INFO L268 CegarLoopResult]: For program point L592-1(lines 580 602) no Hoare annotation was computed. [2020-08-18 12:10:24,332 INFO L268 CegarLoopResult]: For program point append_to_listEXIT(lines 562 568) no Hoare annotation was computed. [2020-08-18 12:10:24,332 INFO L264 CegarLoopResult]: At program point append_to_listENTRY(lines 562 568) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#valid)| |#valid|)) [2020-08-18 12:10:24,332 INFO L268 CegarLoopResult]: For program point append_to_listFINAL(lines 562 568) no Hoare annotation was computed. [2020-08-18 12:10:24,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 12:10:24 BoogieIcfgContainer [2020-08-18 12:10:24,354 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 12:10:24,357 INFO L168 Benchmark]: Toolchain (without parser) took 2722.62 ms. Allocated memory was 140.0 MB in the beginning and 237.0 MB in the end (delta: 97.0 MB). Free memory was 102.4 MB in the beginning and 131.0 MB in the end (delta: -28.5 MB). Peak memory consumption was 68.5 MB. Max. memory is 7.1 GB. [2020-08-18 12:10:24,358 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 140.0 MB. Free memory was 121.6 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 12:10:24,359 INFO L168 Benchmark]: CACSL2BoogieTranslator took 674.54 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 102.2 MB in the beginning and 169.8 MB in the end (delta: -67.6 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-08-18 12:10:24,360 INFO L168 Benchmark]: Boogie Preprocessor took 65.16 ms. Allocated memory is still 203.4 MB. Free memory was 169.8 MB in the beginning and 166.4 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-08-18 12:10:24,361 INFO L168 Benchmark]: RCFGBuilder took 626.61 ms. Allocated memory is still 203.4 MB. Free memory was 166.4 MB in the beginning and 120.9 MB in the end (delta: 45.6 MB). Peak memory consumption was 45.6 MB. Max. memory is 7.1 GB. [2020-08-18 12:10:24,362 INFO L168 Benchmark]: TraceAbstraction took 1348.04 ms. Allocated memory was 203.4 MB in the beginning and 237.0 MB in the end (delta: 33.6 MB). Free memory was 120.9 MB in the beginning and 131.0 MB in the end (delta: -10.1 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. [2020-08-18 12:10:24,367 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 140.0 MB. Free memory was 121.6 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 674.54 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 102.2 MB in the beginning and 169.8 MB in the end (delta: -67.6 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 65.16 ms. Allocated memory is still 203.4 MB. Free memory was 169.8 MB in the beginning and 166.4 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 626.61 ms. Allocated memory is still 203.4 MB. Free memory was 166.4 MB in the beginning and 120.9 MB in the end (delta: 45.6 MB). Peak memory consumption was 45.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1348.04 ms. Allocated memory was 203.4 MB in the beginning and 237.0 MB in the end (delta: 33.6 MB). Free memory was 120.9 MB in the beginning and 131.0 MB in the end (delta: -10.1 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 594]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 599]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 585]: Loop Invariant Derived loop invariant: ((0 == high && low == 0) && high == 0) && low == 0 - InvariantResult [Line: 571]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 42 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.1s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 91 SDtfs, 14 SDslu, 105 SDs, 0 SdLazy, 125 SolverSat, 24 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 11 PreInvPairs, 12 NumberOfFragments, 76 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 30 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 2420 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...