/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=SHALLOWEST -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 20:19:56,638 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 20:19:56,641 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 20:19:56,680 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 20:19:56,680 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 20:19:56,688 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 20:19:56,691 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 20:19:56,694 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 20:19:56,696 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 20:19:56,699 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 20:19:56,700 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 20:19:56,701 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 20:19:56,701 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 20:19:56,703 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 20:19:56,704 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 20:19:56,710 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 20:19:56,710 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 20:19:56,711 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 20:19:56,712 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 20:19:56,714 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 20:19:56,715 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 20:19:56,716 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 20:19:56,717 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 20:19:56,718 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 20:19:56,720 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 20:19:56,720 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 20:19:56,720 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 20:19:56,721 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 20:19:56,722 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 20:19:56,723 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 20:19:56,723 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 20:19:56,723 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 20:19:56,724 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 20:19:56,725 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 20:19:56,726 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 20:19:56,726 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 20:19:56,727 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 20:19:56,727 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 20:19:56,727 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 20:19:56,728 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 20:19:56,728 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 20:19:56,729 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 20:19:56,750 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 20:19:56,751 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 20:19:56,752 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 20:19:56,752 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 20:19:56,752 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 20:19:56,753 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 20:19:56,753 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 20:19:56,753 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 20:19:56,753 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 20:19:56,753 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 20:19:56,753 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 20:19:56,754 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 20:19:56,754 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 20:19:56,754 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 20:19:56,754 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 20:19:56,754 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 20:19:56,755 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 20:19:56,755 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 20:19:56,755 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 20:19:56,755 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 20:19:56,755 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 20:19:56,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:19:56,756 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 20:19:56,756 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 20:19:56,756 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 20:19:56,756 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 20:19:56,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 20:19:56,757 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 20:19:56,757 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 20:19:56,757 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=SHALLOWEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SHALLOWEST; [2020-08-18 20:19:57,042 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 20:19:57,056 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 20:19:57,059 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 20:19:57,060 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 20:19:57,061 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 20:19:57,062 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-data/quick_sort_split.i [2020-08-18 20:19:57,117 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ee2c7692/f5670b84ec1a4529b639897686f902d4/FLAGf2202a997 [2020-08-18 20:19:57,653 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 20:19:57,654 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-data/quick_sort_split.i [2020-08-18 20:19:57,667 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ee2c7692/f5670b84ec1a4529b639897686f902d4/FLAGf2202a997 [2020-08-18 20:19:57,904 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2ee2c7692/f5670b84ec1a4529b639897686f902d4 [2020-08-18 20:19:57,914 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 20:19:57,916 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 20:19:57,917 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 20:19:57,917 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 20:19:57,922 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 20:19:57,923 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:19:57" (1/1) ... [2020-08-18 20:19:57,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d345257 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:19:57, skipping insertion in model container [2020-08-18 20:19:57,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:19:57" (1/1) ... [2020-08-18 20:19:57,936 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 20:19:57,993 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 20:19:58,477 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:19:58,491 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 20:19:58,561 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:19:58,613 INFO L208 MainTranslator]: Completed translation [2020-08-18 20:19:58,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:19:58 WrapperNode [2020-08-18 20:19:58,614 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 20:19:58,615 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 20:19:58,615 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 20:19:58,615 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 20:19:58,629 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:19:58" (1/1) ... [2020-08-18 20:19:58,629 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:19:58" (1/1) ... [2020-08-18 20:19:58,645 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:19:58" (1/1) ... [2020-08-18 20:19:58,646 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:19:58" (1/1) ... [2020-08-18 20:19:58,661 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:19:58" (1/1) ... [2020-08-18 20:19:58,667 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:19:58" (1/1) ... [2020-08-18 20:19:58,671 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:19:58" (1/1) ... [2020-08-18 20:19:58,677 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 20:19:58,678 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 20:19:58,678 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 20:19:58,678 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 20:19:58,679 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:19:58" (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 20:19:58,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 20:19:58,735 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 20:19:58,735 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-08-18 20:19:58,735 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-08-18 20:19:58,736 INFO L138 BoogieDeclarations]: Found implementation of procedure append_to_list [2020-08-18 20:19:58,736 INFO L138 BoogieDeclarations]: Found implementation of procedure create_list [2020-08-18 20:19:58,736 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 20:19:58,736 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 20:19:58,736 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 20:19:58,736 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-08-18 20:19:58,737 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-08-18 20:19:58,737 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-18 20:19:58,737 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-18 20:19:58,737 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-18 20:19:58,737 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-18 20:19:58,737 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-18 20:19:58,738 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-18 20:19:58,738 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-18 20:19:58,738 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-18 20:19:58,738 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-18 20:19:58,738 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-18 20:19:58,738 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-18 20:19:58,739 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-18 20:19:58,739 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-18 20:19:58,739 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-18 20:19:58,739 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-18 20:19:58,739 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-18 20:19:58,739 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-18 20:19:58,739 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-18 20:19:58,740 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-18 20:19:58,740 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-18 20:19:58,740 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-18 20:19:58,740 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-18 20:19:58,740 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-18 20:19:58,740 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-18 20:19:58,741 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-18 20:19:58,741 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-18 20:19:58,741 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-18 20:19:58,741 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-18 20:19:58,741 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-18 20:19:58,741 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-18 20:19:58,741 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-18 20:19:58,742 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-18 20:19:58,742 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-18 20:19:58,742 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-18 20:19:58,742 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-18 20:19:58,742 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-18 20:19:58,742 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-18 20:19:58,742 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-18 20:19:58,743 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-18 20:19:58,743 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-18 20:19:58,743 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-18 20:19:58,743 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-18 20:19:58,743 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-18 20:19:58,744 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-18 20:19:58,744 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-18 20:19:58,744 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-18 20:19:58,744 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-18 20:19:58,744 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-18 20:19:58,744 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-18 20:19:58,744 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-18 20:19:58,745 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 20:19:58,745 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-18 20:19:58,745 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-18 20:19:58,745 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 20:19:58,745 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-18 20:19:58,745 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-18 20:19:58,746 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-18 20:19:58,746 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-18 20:19:58,746 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-18 20:19:58,746 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 20:19:58,746 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-18 20:19:58,746 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-18 20:19:58,747 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-18 20:19:58,747 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-18 20:19:58,747 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-18 20:19:58,747 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-18 20:19:58,747 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-18 20:19:58,747 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-18 20:19:58,747 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-18 20:19:58,748 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-18 20:19:58,748 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-18 20:19:58,748 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-18 20:19:58,748 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-18 20:19:58,748 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-18 20:19:58,748 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-18 20:19:58,749 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-18 20:19:58,749 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-18 20:19:58,749 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-18 20:19:58,749 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-18 20:19:58,749 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-18 20:19:58,749 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-18 20:19:58,750 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-18 20:19:58,750 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-18 20:19:58,750 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-18 20:19:58,750 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-18 20:19:58,750 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-18 20:19:58,750 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-18 20:19:58,751 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-18 20:19:58,751 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-18 20:19:58,751 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-18 20:19:58,751 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-18 20:19:58,751 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-18 20:19:58,751 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-18 20:19:58,751 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-18 20:19:58,752 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-18 20:19:58,752 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-18 20:19:58,752 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-18 20:19:58,752 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-18 20:19:58,752 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-18 20:19:58,752 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-18 20:19:58,752 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-18 20:19:58,752 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-18 20:19:58,753 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-18 20:19:58,753 INFO L130 BoogieDeclarations]: Found specification of procedure append_to_list [2020-08-18 20:19:58,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 20:19:58,753 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 20:19:58,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 20:19:58,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 20:19:58,753 INFO L130 BoogieDeclarations]: Found specification of procedure create_list [2020-08-18 20:19:58,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 20:19:58,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-18 20:19:58,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 20:19:58,754 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 20:19:58,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 20:19:58,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 20:19:58,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 20:19:59,264 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 20:19:59,265 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-18 20:19:59,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:19:59 BoogieIcfgContainer [2020-08-18 20:19:59,268 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 20:19:59,272 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 20:19:59,272 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 20:19:59,276 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 20:19:59,276 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 08:19:57" (1/3) ... [2020-08-18 20:19:59,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@221a00e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:19:59, skipping insertion in model container [2020-08-18 20:19:59,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:19:58" (2/3) ... [2020-08-18 20:19:59,277 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@221a00e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:19:59, skipping insertion in model container [2020-08-18 20:19:59,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:19:59" (3/3) ... [2020-08-18 20:19:59,280 INFO L109 eAbstractionObserver]: Analyzing ICFG quick_sort_split.i [2020-08-18 20:19:59,289 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 20:19:59,297 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-08-18 20:19:59,309 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-08-18 20:19:59,335 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 20:19:59,336 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 20:19:59,336 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 20:19:59,336 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 20:19:59,336 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 20:19:59,337 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 20:19:59,337 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 20:19:59,337 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 20:19:59,354 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-08-18 20:19:59,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-18 20:19:59,361 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:19:59,362 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:19:59,363 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:19:59,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:19:59,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1851020699, now seen corresponding path program 1 times [2020-08-18 20:19:59,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:19:59,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [71260819] [2020-08-18 20:19:59,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:19:59,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:19:59,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:19:59,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:19:59,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 20:19:59,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:19:59,611 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 20:19:59,612 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [71260819] [2020-08-18 20:19:59,615 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:19:59,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 20:19:59,616 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677058715] [2020-08-18 20:19:59,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 20:19:59,622 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:19:59,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 20:19:59,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 20:19:59,640 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 4 states. [2020-08-18 20:19:59,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:19:59,881 INFO L93 Difference]: Finished difference Result 57 states and 77 transitions. [2020-08-18 20:19:59,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 20:19:59,883 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-08-18 20:19:59,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:19:59,905 INFO L225 Difference]: With dead ends: 57 [2020-08-18 20:19:59,905 INFO L226 Difference]: Without dead ends: 32 [2020-08-18 20:19:59,910 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 20:19:59,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-08-18 20:19:59,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-08-18 20:19:59,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-08-18 20:19:59,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2020-08-18 20:19:59,970 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 16 [2020-08-18 20:19:59,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:19:59,970 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2020-08-18 20:19:59,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 20:19:59,971 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2020-08-18 20:19:59,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-18 20:19:59,973 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:19:59,973 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 20:19:59,973 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 20:19:59,973 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:19:59,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:19:59,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1239240901, now seen corresponding path program 1 times [2020-08-18 20:19:59,974 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:19:59,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [738197171] [2020-08-18 20:19:59,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:20:00,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:20:00,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:20:00,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:20:00,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 20:20:00,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:20:00,081 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 20:20:00,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [738197171] [2020-08-18 20:20:00,081 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:20:00,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 20:20:00,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946532936] [2020-08-18 20:20:00,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 20:20:00,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:20:00,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 20:20:00,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:20:00,085 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 5 states. [2020-08-18 20:20:00,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:20:00,208 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2020-08-18 20:20:00,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 20:20:00,209 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-08-18 20:20:00,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:20:00,210 INFO L225 Difference]: With dead ends: 38 [2020-08-18 20:20:00,211 INFO L226 Difference]: Without dead ends: 28 [2020-08-18 20:20:00,212 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 20:20:00,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-08-18 20:20:00,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-08-18 20:20:00,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-08-18 20:20:00,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 33 transitions. [2020-08-18 20:20:00,219 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 33 transitions. Word has length 17 [2020-08-18 20:20:00,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:20:00,220 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 33 transitions. [2020-08-18 20:20:00,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 20:20:00,220 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 33 transitions. [2020-08-18 20:20:00,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-18 20:20:00,221 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:20:00,221 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 20:20:00,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 20:20:00,222 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:20:00,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:20:00,222 INFO L82 PathProgramCache]: Analyzing trace with hash -238280333, now seen corresponding path program 1 times [2020-08-18 20:20:00,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:20:00,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160973205] [2020-08-18 20:20:00,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:20:00,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:20:00,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:20:00,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:20:00,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-08-18 20:20:00,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:20:00,358 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 20:20:00,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160973205] [2020-08-18 20:20:00,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:20:00,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-18 20:20:00,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297298746] [2020-08-18 20:20:00,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 20:20:00,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:20:00,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 20:20:00,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 20:20:00,361 INFO L87 Difference]: Start difference. First operand 28 states and 33 transitions. Second operand 5 states. [2020-08-18 20:20:00,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:20:00,484 INFO L93 Difference]: Finished difference Result 29 states and 34 transitions. [2020-08-18 20:20:00,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-18 20:20:00,486 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-08-18 20:20:00,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:20:00,487 INFO L225 Difference]: With dead ends: 29 [2020-08-18 20:20:00,487 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 20:20:00,488 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 20:20:00,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 20:20:00,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 20:20:00,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 20:20:00,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 20:20:00,490 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-08-18 20:20:00,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:20:00,490 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 20:20:00,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 20:20:00,490 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 20:20:00,490 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 20:20:00,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 20:20:00,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 20:20:00,656 INFO L271 CegarLoopResult]: At program point L576(line 576) the Hoare annotation is: true [2020-08-18 20:20:00,657 INFO L271 CegarLoopResult]: At program point L576-1(lines 571 577) the Hoare annotation is: true [2020-08-18 20:20:00,657 INFO L271 CegarLoopResult]: At program point L574(line 574) the Hoare annotation is: true [2020-08-18 20:20:00,657 INFO L268 CegarLoopResult]: For program point L573(lines 573 576) no Hoare annotation was computed. [2020-08-18 20:20:00,657 INFO L268 CegarLoopResult]: For program point L571-1(lines 571 577) no Hoare annotation was computed. [2020-08-18 20:20:00,657 INFO L268 CegarLoopResult]: For program point L571-3(lines 571 577) no Hoare annotation was computed. [2020-08-18 20:20:00,657 INFO L268 CegarLoopResult]: For program point create_listEXIT(lines 569 579) no Hoare annotation was computed. [2020-08-18 20:20:00,658 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 20:20:00,658 INFO L268 CegarLoopResult]: For program point create_listFINAL(lines 569 579) no Hoare annotation was computed. [2020-08-18 20:20:00,658 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-18 20:20:00,658 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 20:20:00,658 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-18 20:20:00,659 INFO L268 CegarLoopResult]: For program point __bswap_32ENTRY(lines 64 68) no Hoare annotation was computed. [2020-08-18 20:20:00,659 INFO L268 CegarLoopResult]: For program point __bswap_32FINAL(lines 64 68) no Hoare annotation was computed. [2020-08-18 20:20:00,659 INFO L268 CegarLoopResult]: For program point __bswap_32EXIT(lines 64 68) no Hoare annotation was computed. [2020-08-18 20:20:00,659 INFO L268 CegarLoopResult]: For program point __bswap_64ENTRY(lines 69 73) no Hoare annotation was computed. [2020-08-18 20:20:00,659 INFO L268 CegarLoopResult]: For program point __bswap_64FINAL(lines 69 73) no Hoare annotation was computed. [2020-08-18 20:20:00,659 INFO L268 CegarLoopResult]: For program point __bswap_64EXIT(lines 69 73) no Hoare annotation was computed. [2020-08-18 20:20:00,659 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-18 20:20:00,660 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-18 20:20:00,660 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-18 20:20:00,660 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-18 20:20:00,660 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 580 602) no Hoare annotation was computed. [2020-08-18 20:20:00,660 INFO L268 CegarLoopResult]: For program point L597-1(lines 580 602) no Hoare annotation was computed. [2020-08-18 20:20:00,660 INFO L268 CegarLoopResult]: For program point L597-2(lines 580 602) no Hoare annotation was computed. [2020-08-18 20:20:00,660 INFO L268 CegarLoopResult]: For program point L593(lines 593 594) no Hoare annotation was computed. [2020-08-18 20:20:00,661 INFO L268 CegarLoopResult]: For program point L593-2(lines 593 594) no Hoare annotation was computed. [2020-08-18 20:20:00,661 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 20:20:00,661 INFO L268 CegarLoopResult]: For program point L581(line 581) no Hoare annotation was computed. [2020-08-18 20:20:00,661 INFO L268 CegarLoopResult]: For program point L598(lines 598 599) no Hoare annotation was computed. [2020-08-18 20:20:00,661 INFO L268 CegarLoopResult]: For program point L598-2(lines 598 599) no Hoare annotation was computed. [2020-08-18 20:20:00,661 INFO L268 CegarLoopResult]: For program point L594(line 594) no Hoare annotation was computed. [2020-08-18 20:20:00,662 INFO L268 CegarLoopResult]: For program point L586(line 586) no Hoare annotation was computed. [2020-08-18 20:20:00,662 INFO L268 CegarLoopResult]: For program point L586-2(line 586) no Hoare annotation was computed. [2020-08-18 20:20:00,662 INFO L268 CegarLoopResult]: For program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 599) no Hoare annotation was computed. [2020-08-18 20:20:00,662 INFO L268 CegarLoopResult]: For program point L599(line 599) no Hoare annotation was computed. [2020-08-18 20:20:00,663 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 594) no Hoare annotation was computed. [2020-08-18 20:20:00,664 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 20:20:00,664 INFO L268 CegarLoopResult]: For program point L592-1(lines 580 602) no Hoare annotation was computed. [2020-08-18 20:20:00,664 INFO L268 CegarLoopResult]: For program point append_to_listEXIT(lines 562 568) no Hoare annotation was computed. [2020-08-18 20:20:00,664 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 20:20:00,664 INFO L268 CegarLoopResult]: For program point append_to_listFINAL(lines 562 568) no Hoare annotation was computed. [2020-08-18 20:20:00,686 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 08:20:00 BoogieIcfgContainer [2020-08-18 20:20:00,686 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 20:20:00,693 INFO L168 Benchmark]: Toolchain (without parser) took 2772.68 ms. Allocated memory was 138.9 MB in the beginning and 235.9 MB in the end (delta: 97.0 MB). Free memory was 100.5 MB in the beginning and 129.4 MB in the end (delta: -29.0 MB). Peak memory consumption was 68.0 MB. Max. memory is 7.1 GB. [2020-08-18 20:20:00,694 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 20:20:00,695 INFO L168 Benchmark]: CACSL2BoogieTranslator took 697.84 ms. Allocated memory was 138.9 MB in the beginning and 203.9 MB in the end (delta: 65.0 MB). Free memory was 100.3 MB in the beginning and 170.0 MB in the end (delta: -69.8 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-08-18 20:20:00,697 INFO L168 Benchmark]: Boogie Preprocessor took 62.64 ms. Allocated memory is still 203.9 MB. Free memory was 170.0 MB in the beginning and 166.6 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-08-18 20:20:00,700 INFO L168 Benchmark]: RCFGBuilder took 590.84 ms. Allocated memory is still 203.9 MB. Free memory was 166.6 MB in the beginning and 121.1 MB in the end (delta: 45.5 MB). Peak memory consumption was 45.5 MB. Max. memory is 7.1 GB. [2020-08-18 20:20:00,708 INFO L168 Benchmark]: TraceAbstraction took 1414.59 ms. Allocated memory was 203.9 MB in the beginning and 235.9 MB in the end (delta: 32.0 MB). Free memory was 120.4 MB in the beginning and 129.4 MB in the end (delta: -9.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-08-18 20:20:00,717 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 697.84 ms. Allocated memory was 138.9 MB in the beginning and 203.9 MB in the end (delta: 65.0 MB). Free memory was 100.3 MB in the beginning and 170.0 MB in the end (delta: -69.8 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 62.64 ms. Allocated memory is still 203.9 MB. Free memory was 170.0 MB in the beginning and 166.6 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 590.84 ms. Allocated memory is still 203.9 MB. Free memory was 166.6 MB in the beginning and 121.1 MB in the end (delta: 45.5 MB). Peak memory consumption was 45.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1414.59 ms. Allocated memory was 203.9 MB in the beginning and 235.9 MB in the end (delta: 32.0 MB). Free memory was 120.4 MB in the beginning and 129.4 MB in the end (delta: -9.0 MB). Peak memory consumption was 23.0 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: 0.5s, 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, 0.3s 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...